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Olmsted</title> <meta name="description" content="Search results for: Aspen Olmsted"> <meta name="keywords" content="Aspen Olmsted"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler 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id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="Aspen Olmsted"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 71</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Aspen Olmsted</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">71</span> Flowsheet Development, Simulation and Optimization of Carbon-Di-Oxide Removal System at Natural Gas Reserves by Aspen–Hysys Process Simulator</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Ruhul%20Amin">Mohammad Ruhul Amin</a>, <a href="https://publications.waset.org/abstracts/search?q=Nusrat%20Jahan"> Nusrat Jahan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Natural gas is a cleaner fuel compared to the others. But it needs some treatment before it is in a state to be used. So natural gas purification is an integral part of any process where natural gas is used as raw material or fuel. There are several impurities in natural gas that have to be removed before use. CO2 is one of the major contaminants. In this project we have removed CO2 by amine process by using MEA solution. We have built up the whole amine process for removing CO2 in Aspen Hysys and simulated the process. At the end of simulation we have got very satisfactory results by using MEA solution for the removal of CO2. Simulation result shows that amine absorption process enables to reduce CO2 content from NG by 58%. HYSYS optimizer allowed us to get a perfect optimized plant. After optimization the profit of existing plant is increased by 2.34 %.Simulation and optimization by Aspen-HYSYS simulator makes available us to enormous information which will help us to further research in future. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aspen%E2%80%93Hysys" title="Aspen–Hysys">Aspen–Hysys</a>, <a href="https://publications.waset.org/abstracts/search?q=CO2%20removal" title=" CO2 removal"> CO2 removal</a>, <a href="https://publications.waset.org/abstracts/search?q=flowsheet%20development" title=" flowsheet development"> flowsheet development</a>, <a href="https://publications.waset.org/abstracts/search?q=MEA%20solution" title=" MEA solution"> MEA solution</a>, <a href="https://publications.waset.org/abstracts/search?q=natural%20gas%20optimization" title=" natural gas optimization"> natural gas optimization</a> </p> <a href="https://publications.waset.org/abstracts/28865/flowsheet-development-simulation-and-optimization-of-carbon-di-oxide-removal-system-at-natural-gas-reserves-by-aspen-hysys-process-simulator" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28865.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">498</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">70</span> Aspen Plus Simulation of Saponification of Ethyl Acetate in the Presence of Sodium Hydroxide in a Plug Flow Reactor</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=U.%20P.%20L.%20Wijayarathne">U. P. L. Wijayarathne</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20C.%20Wasalathilake"> K. C. Wasalathilake</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work presents the modelling and simulation of saponification of ethyl acetate in the presence of sodium hydroxide in a plug flow reactor using Aspen Plus simulation software. Plug flow reactors are widely used in the industry due to the non-mixing property. The use of plug flow reactors becomes significant when there is a need for continuous large scale reaction or fast reaction. Plug flow reactors have a high volumetric unit conversion as the occurrence for side reactions is minimum. In this research Aspen Plus V8.0 has been successfully used to simulate the plug flow reactor. In order to simulate the process as accurately as possible HYSYS Peng-Robinson EOS package was used as the property method. The results obtained from the simulation were verified by the experiment carried out in the EDIBON plug flow reactor module. The correlation coefficient (r2) was 0.98 and it proved that simulation results satisfactorily fit for the experimental model. The developed model can be used as a guide for understanding the reaction kinetics of a plug flow reactor. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aspen%20plus" title="aspen plus">aspen plus</a>, <a href="https://publications.waset.org/abstracts/search?q=modelling" title=" modelling"> modelling</a>, <a href="https://publications.waset.org/abstracts/search?q=plug%20flow%20reactor" title=" plug flow reactor"> plug flow reactor</a>, <a href="https://publications.waset.org/abstracts/search?q=simulation" title=" simulation"> simulation</a> </p> <a href="https://publications.waset.org/abstracts/16114/aspen-plus-simulation-of-saponification-of-ethyl-acetate-in-the-presence-of-sodium-hydroxide-in-a-plug-flow-reactor" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16114.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">602</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">69</span> Mechanical Properties of Aspen Wood of Structural Dimensions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Barbora%20Herdov%C3%A1">Barbora Herdová</a>, <a href="https://publications.waset.org/abstracts/search?q=Rastislav%20Laga%C5%88a"> Rastislav Lagaňa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The paper investigates the mechanical properties of European aspen (Populus tremula L.) as a potential replacement for load-bearing elements in historical structures. One of the main aims of the research has been the quantification of mechanical properties via destructive testing and the subsequent calculation of characteristic values of these properties. The research encompasses experimental testing of wood specimens for the determination of dynamic modulus of elasticity (MOEdyn), modulus of elasticity (MOE), modulus of rupture (MOR), and density. The results were analyzed and compared to established standards for structural timber. The results confirmed statistically significant dependence between MOR and MOEdyn. The correlation between the MOR and the dynamic MOEdyn enabled non-destructive strength grading using the Sylvatest Duo® system. The findings of this research contribute to the potential use of European aspen as a structural timber, which could have implications for the sustainable use of this abundant and renewable resource in the construction industry. They also show the usability of European aspen in the reconstruction of historical buildings. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=populus%20tremula" title="populus tremula">populus tremula</a>, <a href="https://publications.waset.org/abstracts/search?q=MOE" title=" MOE"> MOE</a>, <a href="https://publications.waset.org/abstracts/search?q=MOR" title=" MOR"> MOR</a>, <a href="https://publications.waset.org/abstracts/search?q=sylvatest%20Duo%C2%AE." title=" sylvatest Duo®."> sylvatest Duo®.</a> </p> <a href="https://publications.waset.org/abstracts/179309/mechanical-properties-of-aspen-wood-of-structural-dimensions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/179309.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">64</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">68</span> Evaluating the Total Costs of a Ransomware-Resilient Architecture for Healthcare Systems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sreejith%20Gopinath">Sreejith Gopinath</a>, <a href="https://publications.waset.org/abstracts/search?q=Aspen%20Olmsted"> Aspen Olmsted</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper is based on our previous work that proposed a risk-transference-based architecture for healthcare systems to store sensitive data outside the system boundary, rendering the system unattractive to would-be bad actors. This architecture also allows a compromised system to be abandoned and a new system instance spun up in place to ensure business continuity without paying a ransom or engaging with a bad actor. This paper delves into the details of various attacks we simulated against the prototype system. In the paper, we discuss at length the time and computational costs associated with storing and retrieving data in the prototype system, abandoning a compromised system, and setting up a new instance with existing data. Lastly, we simulate some analytical workloads over the data stored in our specialized data storage system and discuss the time and computational costs associated with running analytics over data in a specialized storage system outside the system boundary. In summary, this paper discusses the total costs of data storage, access, and analytics incurred with the proposed architecture. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cybersecurity" title="cybersecurity">cybersecurity</a>, <a href="https://publications.waset.org/abstracts/search?q=healthcare" title=" healthcare"> healthcare</a>, <a href="https://publications.waset.org/abstracts/search?q=ransomware" title=" ransomware"> ransomware</a>, <a href="https://publications.waset.org/abstracts/search?q=resilience" title=" resilience"> resilience</a>, <a href="https://publications.waset.org/abstracts/search?q=risk%20transference" title=" risk transference"> risk transference</a> </p> <a href="https://publications.waset.org/abstracts/145370/evaluating-the-total-costs-of-a-ransomware-resilient-architecture-for-healthcare-systems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/145370.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">132</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">67</span> Genetic Algorithm Optimization of a Small Scale Natural Gas Liquefaction Process</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20I.%20Abdelhamid">M. I. Abdelhamid</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20O.%20Ghallab"> A. O. Ghallab</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20S.%20Ettouney"> R. S. Ettouney</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20A.%20El-Rifai"> M. A. El-Rifai </a> </p> <p class="card-text"><strong>Abstract:</strong></p> An optimization scheme based on COM server is suggested for communication between Genetic Algorithm (GA) toolbox of MATLAB and Aspen HYSYS. The structure and details of the proposed framework are discussed. The power of the developed scheme is illustrated by its application to the optimization of a recently developed natural gas liquefaction process in which Aspen HYSYS was used for minimization of the power consumption by optimizing the values of five operating variables. In this work, optimization by coupling between the GA in MATLAB and Aspen HYSYS model of the same process using the same five decision variables enabled improvements in power consumption by 3.3%, when 77% of the natural gas feed is liquefied. Also on inclusion of the flow rates of both nitrogen and carbon dioxide refrigerants as two additional decision variables, the power consumption decreased by 6.5% for a 78% liquefaction of the natural gas feed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=stranded%20gas%20liquefaction" title="stranded gas liquefaction">stranded gas liquefaction</a>, <a href="https://publications.waset.org/abstracts/search?q=genetic%20algorithm" title=" genetic algorithm"> genetic algorithm</a>, <a href="https://publications.waset.org/abstracts/search?q=COM%20server" title=" COM server"> COM server</a>, <a href="https://publications.waset.org/abstracts/search?q=single%20nitrogen%20expansion" title=" single nitrogen expansion"> single nitrogen expansion</a>, <a href="https://publications.waset.org/abstracts/search?q=carbon%20dioxide%20pre-cooling" title=" carbon dioxide pre-cooling"> carbon dioxide pre-cooling</a> </p> <a href="https://publications.waset.org/abstracts/65318/genetic-algorithm-optimization-of-a-small-scale-natural-gas-liquefaction-process" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/65318.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">449</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">66</span> Techno-Economic Assessment of Aluminum Waste Management</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hamad%20Almohamadi">Hamad Almohamadi</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdulrahman%20AlKassem"> Abdulrahman AlKassem</a>, <a href="https://publications.waset.org/abstracts/search?q=Majed%20Alamoudi"> Majed Alamoudi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Dumping Aluminum (Al) waste into landfills causes several health and environmental problems. The pyrolysis process could treat Al waste to produce AlCl₃ and H₂. Using the Aspen Plus software, a techno-economic and feasibility assessment has been performed for Al waste pyrolysis. The Aspen Plus simulation was employed to estimate the plant's mass and energy balance, which was assumed to process 100 dry metric tons of Al waste per day. This study looked at two cases of Al waste treatment. The first case produces 355 tons of AlCl₃ per day and 9 tons of H₂ per day without recycling. The conversion rate must be greater than 50% in case 1 to make a profit. In this case, the MSP for AlCl₃ is $768/ton. The plant would generate $25 million annually if the AlCl₃ were sold at $1000 per ton. In case 2 with recycling, the conversion has less impact on the plant's profitability than in case 1. Moreover, compared to case 1, the MSP of AlCl₃ has no significant influence on process profitability. In this scenario, if AlCl₃ were sold at $1000/ton, the process profit would be $58 million annually. Case 2 is better than case 1 because recycling Al generates a higher yield than converting it to AlCl₃ and H₂. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aluminum%20waste" title="aluminum waste">aluminum waste</a>, <a href="https://publications.waset.org/abstracts/search?q=aspen%20plus" title=" aspen plus"> aspen plus</a>, <a href="https://publications.waset.org/abstracts/search?q=process%20modelling" title=" process modelling"> process modelling</a>, <a href="https://publications.waset.org/abstracts/search?q=fast%20pyrolysis" title=" fast pyrolysis"> fast pyrolysis</a>, <a href="https://publications.waset.org/abstracts/search?q=techno-economic%20assessment" title=" techno-economic assessment"> techno-economic assessment</a> </p> <a href="https://publications.waset.org/abstracts/166074/techno-economic-assessment-of-aluminum-waste-management" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/166074.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">93</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">65</span> Modeling Landscape Performance: Evaluating the Performance Benefits of the Olmsted Brothers’ Proposed Parkway Designs for Los Angeles</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aaron%20Liggett">Aaron Liggett</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This research focuses on the visionary proposal made by the Olmsted Brothers Landscape Architecture firm in the 1920s for a network of interconnected parkways in Los Angeles. Their envisioned parkways aimed to address environmental and cultural strains by providing green space for recreation, wildlife habitat, and stormwater management while serving as multimodal transportation routes. Although the parkways were never constructed, through an evidence-based approach, this research presents a framework for evaluating the potential functionality and success of the parkways by modeling and visualizing their quantitative and qualitative landscape performance and benefits. Historical documents and innovative digital modeling tools produce detailed analysis, modeling, and visualization of the parkway designs. A set of 1928 construction documents are used to analyze and interpret the design intent of the parkways. Grading plans are digitized in CAD and modeled in Sketchup to produce 3D visualizations of the parkway. Drainage plans are digitized to model stormwater performance. Planting plans are analyzed to model urban forestry and biodiversity. The EPA's Storm Water Management Model (SWMM) predicts runoff quantity and quality. The USDA Forests Service tools evaluate carbon sequestration and air quality. Spatial and overlay analysis techniques are employed to assess urban connectivity and the spatial impacts of the parkway designs. The study reveals how the integration of blue infrastructure, green infrastructure, and transportation infrastructure within the parkway design creates a multifunctional landscape capable of offering alternative spatial and temporal uses. The analysis demonstrates the potential for multiple functional, ecological, aesthetic, and social benefits to be derived from the proposed parkways. The analysis of the Olmsted Brothers' proposed Los Angeles parkways, which predated contemporary ecological design and resiliency practices, demonstrates the potential for providing multiple functional, ecological, aesthetic, and social benefits within urban designs. The findings highlight the importance of integrated blue, green, and transportation infrastructure in creating a multifunctional landscape that simultaneously serves multiple purposes. The research contributes new methods for modeling and visualizing landscape performance benefits, providing insights and techniques for informing future designs and sustainable development strategies. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=landscape%20architecture" title="landscape architecture">landscape architecture</a>, <a href="https://publications.waset.org/abstracts/search?q=ecological%20urban%20design" title=" ecological urban design"> ecological urban design</a>, <a href="https://publications.waset.org/abstracts/search?q=greenway" title=" greenway"> greenway</a>, <a href="https://publications.waset.org/abstracts/search?q=landscape%20performance" title=" landscape performance"> landscape performance</a> </p> <a href="https://publications.waset.org/abstracts/168921/modeling-landscape-performance-evaluating-the-performance-benefits-of-the-olmsted-brothers-proposed-parkway-designs-for-los-angeles" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/168921.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">130</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">64</span> Simulation of Polymeric Precursors Production from Wine Industrial Organic Wastes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tanapoom%20Phuncharoen">Tanapoom Phuncharoen</a>, <a href="https://publications.waset.org/abstracts/search?q=Tawiwat%20Sriwongsa"> Tawiwat Sriwongsa</a>, <a href="https://publications.waset.org/abstracts/search?q=Kanita%20Boonruang"> Kanita Boonruang</a>, <a href="https://publications.waset.org/abstracts/search?q=Apichit%20Svang-Ariyaskul"> Apichit Svang-Ariyaskul</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The production of dimethyl acetal, isovaleradehyde, and pyridine were simulated using Aspen Plus simulation. Upgrading cleaning water from wine industrial production is the main objective of the project. The winery waste composes of acetaldehyde, methanol, ethyl acetate, 1-propanol, water, isoamyl alcohol, and isobutanol. The project is separated into three parts; separation, reaction, and purification. Various processes were considered to maximize the profit along with obtaining high purity and recovery of each component with optimum heat duty. The results show a significant value of the product with purity more than 75% and recovery over 98%. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dimethyl%20acetal" title="dimethyl acetal">dimethyl acetal</a>, <a href="https://publications.waset.org/abstracts/search?q=pyridine" title=" pyridine"> pyridine</a>, <a href="https://publications.waset.org/abstracts/search?q=wine" title=" wine"> wine</a>, <a href="https://publications.waset.org/abstracts/search?q=aspen%20plus" title=" aspen plus"> aspen plus</a>, <a href="https://publications.waset.org/abstracts/search?q=isovaleradehyde" title=" isovaleradehyde"> isovaleradehyde</a>, <a href="https://publications.waset.org/abstracts/search?q=polymeric%20precursors" title=" polymeric precursors"> polymeric precursors</a> </p> <a href="https://publications.waset.org/abstracts/2273/simulation-of-polymeric-precursors-production-from-wine-industrial-organic-wastes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2273.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">327</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">63</span> Evaluation of Biomass Introduction Methods in Coal Co-Gasification</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ruwaida%20Abdul%20Rasid">Ruwaida Abdul Rasid</a>, <a href="https://publications.waset.org/abstracts/search?q=Kevin%20J.%20Hughes"> Kevin J. Hughes</a>, <a href="https://publications.waset.org/abstracts/search?q=Peter%20J.%20Henggs"> Peter J. Henggs</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Pourkashanian"> Mohamed Pourkashanian</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Heightened concerns over the amount of carbon emitted from coal-related processes are generating shifts to the application of biomass. In co-gasification, where coal is gasified along with biomass, the biomass may be fed together with coal (co-feeding) or an independent biomass gasifier needs to be integrated with the coal gasifier. The main aim of this work is to evaluate the biomass introduction methods in coal co-gasification. This includes the evaluation of biomass concentration input (B0 to B100) and its gasification performance. A process model is developed and simulated in Aspen HYSYS, where both coal and biomass are modeled according to its ultimate analysis. It was found that the syngas produced increased with increasing biomass content for both co-feeding and independent schemes. However, the heating values and heat duties decreases with biomass concentration as more CO2 are produced from complete combustion. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aspen%20HYSYS" title="aspen HYSYS">aspen HYSYS</a>, <a href="https://publications.waset.org/abstracts/search?q=biomass" title=" biomass"> biomass</a>, <a href="https://publications.waset.org/abstracts/search?q=coal" title=" coal"> coal</a>, <a href="https://publications.waset.org/abstracts/search?q=co-gasification%20modelling" title=" co-gasification modelling"> co-gasification modelling</a>, <a href="https://publications.waset.org/abstracts/search?q=simulation" title=" simulation"> simulation</a> </p> <a href="https://publications.waset.org/abstracts/17080/evaluation-of-biomass-introduction-methods-in-coal-co-gasification" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/17080.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">409</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">62</span> Olefin and Paraffin Separation Using Simulations on Extractive Distillation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Naeem">Muhammad Naeem</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdulrahman%20A.%20Al-Rabiah"> Abdulrahman A. Al-Rabiah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Technical mixture of C4 containing 1-butene and n-butane are very close to each other with respect to their boiling points i.e. -6.3°C for 1-butene and -1°C for n-butane. Extractive distillation process is used for the separation of 1-butene from the existing mixture of C4. The solvent is the essential of extractive distillation, and an appropriate solvent shows an important role in the process economy of extractive distillation. Aspen Plus has been applied for the separation of these hydrocarbons as a simulator; moreover NRTL activity coefficient model was used in the simulation. This model indicated that the material balances in this separation process were accurate for several solvent flow rates. Mixture of acetonitrile and water used as a solvent and 99 % pure 1-butene was separated. This simulation proposed the ratio of the feed to solvent as 1 : 7.9 and 15 plates for the solvent recovery column, previously feed to solvent ratio was more than this and the proposed plates were 30, which can economize the separation process. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=extractive%20distillation" title="extractive distillation">extractive distillation</a>, <a href="https://publications.waset.org/abstracts/search?q=1-butene" title=" 1-butene"> 1-butene</a>, <a href="https://publications.waset.org/abstracts/search?q=Aspen%20Plus" title=" Aspen Plus"> Aspen Plus</a>, <a href="https://publications.waset.org/abstracts/search?q=ACN%20solvent" title=" ACN solvent "> ACN solvent </a> </p> <a href="https://publications.waset.org/abstracts/10500/olefin-and-paraffin-separation-using-simulations-on-extractive-distillation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/10500.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">448</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">61</span> Process Simulation of 1-Butene Separation from C4 Mixture by Extractive Distillation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Naeem">Muhammad Naeem</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdulrahman%20A.%20Al-Rabiah"> Abdulrahman A. Al-Rabiah</a>, <a href="https://publications.waset.org/abstracts/search?q=Wasif%20Mughees"> Wasif Mughees</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Technical mixture of C4 containing 1-butene and n-butane are very close to each other with regard to their boiling points i.e. -6.3°C for 1-butene and -1°C for n-butane. Extractive distillation process is used for the separation of 1-butene from the existing mixture of C4. The solvent is the essential of extractive distillation, and an appropriate solvent plays an important role in the process economy of extractive distillation. Aspen Plus has been applied for the separation of these hydrocarbons as a simulator. Moreover, NRTL activity coefficient model was used in the simulation. This model indicated that the material balances in this separation process were accurate for several solvent flow rates. Mixture of acetonitrile and water used as a solvent and 99% pure 1-butene was separated. This simulation proposed the ratio of the feed to solvent as 1: 7.9 and 15 plates for the solvent recovery column. Previously feed to solvent ratio was more than this and the number of proposed plates were 30, which shows that the separation process can be economized. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=extractive%20distillation" title="extractive distillation">extractive distillation</a>, <a href="https://publications.waset.org/abstracts/search?q=1-butene" title=" 1-butene"> 1-butene</a>, <a href="https://publications.waset.org/abstracts/search?q=aspen%20plus" title=" aspen plus"> aspen plus</a>, <a href="https://publications.waset.org/abstracts/search?q=ACN%20solvent" title=" ACN solvent"> ACN solvent</a> </p> <a href="https://publications.waset.org/abstracts/5813/process-simulation-of-1-butene-separation-from-c4-mixture-by-extractive-distillation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/5813.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">544</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">60</span> The Effect of Flue Gas Condensation on the Exergy Efficiency and Economic Performance of a Waste-To-Energy Plant</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Francis%20Chinweuba%20Eboh">Francis Chinweuba Eboh</a>, <a href="https://publications.waset.org/abstracts/search?q=Tobias%20Richards"> Tobias Richards</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, a waste-to-energy combined heat and power plant under construction was modelled and simulated with the Aspen Plus software. The base case process plant was evaluated and compared when integrated with flue gas condensation (FGC) in order to find out the impact of the exergy efficiency and economic feasibility as well as the effect of overall system exergy losses and revenue generated in the investigated plant. The economic evaluations were carried out using the vendor cost data from Aspen process economic analyser. The results indicate that 4 % increase in the exergy efficiency and 29 % reduction in the exergy loss in the flue gas were obtained when the flue gas condensation was incorporated. Furthermore, with the integrated FGC, the net present values (NPV) and income generated in the base process plant were increased by 29 % and 10 % respectively after 20 years of operation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=economic%20feasibility" title="economic feasibility">economic feasibility</a>, <a href="https://publications.waset.org/abstracts/search?q=exergy%20efficiency" title=" exergy efficiency"> exergy efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=exergy%20losses" title=" exergy losses"> exergy losses</a>, <a href="https://publications.waset.org/abstracts/search?q=flue%20gas%20condensation" title=" flue gas condensation"> flue gas condensation</a>, <a href="https://publications.waset.org/abstracts/search?q=waste-to-energy" title=" waste-to-energy"> waste-to-energy</a> </p> <a href="https://publications.waset.org/abstracts/108189/the-effect-of-flue-gas-condensation-on-the-exergy-efficiency-and-economic-performance-of-a-waste-to-energy-plant" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/108189.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">190</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">59</span> Gas Flaring Utilization at KK Station</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abd%20Alati%20Ali%20Abushnaq">Abd Alati Ali Abushnaq</a>, <a href="https://publications.waset.org/abstracts/search?q=Malek%20Essnni"> Malek Essnni</a>, <a href="https://publications.waset.org/abstracts/search?q=Abduraouf%20Eteer"> Abduraouf Eteer</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present study proposes a comprehensive approach to effectively utilize associated gas from the KK remote station, eliminating the practice of flaring and mitigating greenhouse gas (GHG) emissions. The proposed integrated system involves diverting the associated gas via a newly designed pipeline, seamlessly connecting to the existing 12-inch pipeline at the tie-in point. The proposed destination is the low-pressure system at A-100 or 3rd stage, where the associated gas will be channeled towards the NGL (natural gas liquid) plant for processing. To ensure the system's efficacy under varying gas production scenarios, the study employs two industry-standard simulation software packages, Aspen HYSYS and PIPSIM. The simulated results demonstrate the system's ability to handle the projected increase in gas production, reaching up to 38 MMSCFD. This comprehensive analysis ensures the system's robustness and adaptability to future production demands. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=associated%20gas" title="associated gas">associated gas</a>, <a href="https://publications.waset.org/abstracts/search?q=flaring%20mitigation" title=" flaring mitigation"> flaring mitigation</a>, <a href="https://publications.waset.org/abstracts/search?q=GHG%20emissions" title=" GHG emissions"> GHG emissions</a>, <a href="https://publications.waset.org/abstracts/search?q=pipeline%20diversion" title=" pipeline diversion"> pipeline diversion</a>, <a href="https://publications.waset.org/abstracts/search?q=NGL%20plant" title=" NGL plant"> NGL plant</a>, <a href="https://publications.waset.org/abstracts/search?q=KK%20remote%20station" title=" KK remote station"> KK remote station</a>, <a href="https://publications.waset.org/abstracts/search?q=production%20forecasting" title=" production forecasting"> production forecasting</a>, <a href="https://publications.waset.org/abstracts/search?q=Aspen%20HYSYS" title=" Aspen HYSYS"> Aspen HYSYS</a>, <a href="https://publications.waset.org/abstracts/search?q=PIPSIM" title=" PIPSIM"> PIPSIM</a> </p> <a href="https://publications.waset.org/abstracts/178865/gas-flaring-utilization-at-kk-station" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/178865.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">88</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">58</span> A Simulation Model and Parametric Study of Triple-Effect Desalination Plant </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Maha%20BenHamad">Maha BenHamad</a>, <a href="https://publications.waset.org/abstracts/search?q=Ali%20Snoussi"> Ali Snoussi</a>, <a href="https://publications.waset.org/abstracts/search?q=Ammar%20Ben%20Brahim"> Ammar Ben Brahim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A steady-state analysis of triple-effect thermal vapor compressor desalination unit was performed. A mathematical model based on mass, salinity and energy balances is developed. The purpose of this paper is to develop a connection between process simulator and process optimizer in order to study the influence of several operating variables on the performance and the produced water cost of the unit. A MATLAB program is used to solve the model equations, and Aspen HYSYS is used to model the plant. The model validity is examined against a commercial plant and showed a good agreement between industrial data and simulations results. Results show that the pressures of the last effect and the compressed vapor have an important influence on the produced cost, and the increase of the difference temperature in the condenser decreases the specific heat area about 22%. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=steady-state" title="steady-state">steady-state</a>, <a href="https://publications.waset.org/abstracts/search?q=triple%20effect" title=" triple effect"> triple effect</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20vapor%20compressor" title=" thermal vapor compressor"> thermal vapor compressor</a>, <a href="https://publications.waset.org/abstracts/search?q=Matlab" title=" Matlab"> Matlab</a>, <a href="https://publications.waset.org/abstracts/search?q=Aspen%20Hysys" title=" Aspen Hysys"> Aspen Hysys</a> </p> <a href="https://publications.waset.org/abstracts/94523/a-simulation-model-and-parametric-study-of-triple-effect-desalination-plant" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/94523.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">172</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">57</span> Fluidised Bed Gasification of Multiple Agricultural Biomass-Derived Briquettes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rukayya%20Ibrahim%20Muazu">Rukayya Ibrahim Muazu</a>, <a href="https://publications.waset.org/abstracts/search?q=Aiduan%20Li%20Borrion"> Aiduan Li Borrion</a>, <a href="https://publications.waset.org/abstracts/search?q=Julia%20A.%20Stegemann"> Julia A. Stegemann</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Biomass briquette gasification is regarded as a promising route for efficient briquette use in energy generation, fuels and other useful chemicals, however, previous research work has focused on briquette gasification in fixed bed gasifiers such as updraft and downdraft gasifiers. Fluidised bed gasifier has the potential to be effectively sized for medium or large scale. This study investigated the use of fuel briquettes produced from blends of rice husks and corn cobs biomass residues, in a bubbling fluidised bed gasifier. The study adopted a combination of numerical equations and Aspen Plus simulation software to predict the product gas (syngas) composition based on briquette's density and biomass composition (blend ratio of rice husks to corn cobs). The Aspen Plus model was based on an experimentally validated model from the literature. The results based on a briquette size of 32 mm diameter and relaxed density range of 500 to 650 kg/m3 indicated that fluidisation air required in the gasifier increased with an increase in briquette density, and the fluidisation air showed to be the controlling factor compared with the actual air required for gasification of the biomass briquettes. The mass flowrate of CO2 in the predicted syngas composition, increased with an increase in the air flow rate, while CO production decreased and H2 was almost constant. The H2/CO ratio for various blends of rice husks and corn cobs did not significantly change at the designed process air, but a significant difference of 1.0 for H2/CO ratio was observed at higher air flow rate, and between 10/90 to 90/10 blend ratio of rice husks to corn cobs. This implies the need for further understanding of biomass variability and hydrodynamic parameters on syngas composition in biomass briquette gasification. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aspen%20plus" title="aspen plus">aspen plus</a>, <a href="https://publications.waset.org/abstracts/search?q=briquettes" title=" briquettes"> briquettes</a>, <a href="https://publications.waset.org/abstracts/search?q=fluidised%20bed" title=" fluidised bed"> fluidised bed</a>, <a href="https://publications.waset.org/abstracts/search?q=gasification" title=" gasification"> gasification</a>, <a href="https://publications.waset.org/abstracts/search?q=syngas" title=" syngas"> syngas</a> </p> <a href="https://publications.waset.org/abstracts/31740/fluidised-bed-gasification-of-multiple-agricultural-biomass-derived-briquettes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/31740.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">457</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">56</span> Assessment of Carbon Dioxide Separation by Amine Solutions Using Electrolyte Non-Random Two-Liquid and Peng-Robinson Models: Carbon Dioxide Absorption Efficiency </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Arash%20Esmaeili">Arash Esmaeili</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhibang%20Liu"> Zhibang Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Yang%20Xiang"> Yang Xiang</a>, <a href="https://publications.waset.org/abstracts/search?q=Jimmy%20Yun"> Jimmy Yun</a>, <a href="https://publications.waset.org/abstracts/search?q=Lei%20Shao"> Lei Shao</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A high pressure carbon dioxide (CO<sub>2</sub>) absorption from a specific gas in a conventional column has been evaluated by the Aspen HYSYS simulator using a wide range of single absorbents and blended solutions to estimate the outlet CO<sub>2</sub> concentration, absorption efficiency and CO<sub>2</sub> loading to choose the most proper solution in terms of CO<sub>2 </sub>capture for environmental concerns. The property package (Acid Gas-Chemical Solvent) which is compatible with all applied solutions for the simulation in this study, estimates the properties based on an electrolyte non-random two-liquid (E-NRTL) model for electrolyte thermodynamics and Peng-Robinson equation of state for the vapor and liquid hydrocarbon phases. Among all the investigated single amines as well as blended solutions, piperazine (PZ) and the mixture of piperazine and monoethanolamine (MEA) have been found as the most effective absorbents respectively for CO<sub>2</sub> absorption with high reactivity based on the simulated operational conditions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=absorption" title="absorption">absorption</a>, <a href="https://publications.waset.org/abstracts/search?q=amine%20solutions" title=" amine solutions"> amine solutions</a>, <a href="https://publications.waset.org/abstracts/search?q=Aspen%20HYSYS" title=" Aspen HYSYS"> Aspen HYSYS</a>, <a href="https://publications.waset.org/abstracts/search?q=carbon%20dioxide" title=" carbon dioxide"> carbon dioxide</a>, <a href="https://publications.waset.org/abstracts/search?q=simulation" title=" simulation"> simulation</a> </p> <a href="https://publications.waset.org/abstracts/127187/assessment-of-carbon-dioxide-separation-by-amine-solutions-using-electrolyte-non-random-two-liquid-and-peng-robinson-models-carbon-dioxide-absorption-efficiency" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/127187.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">185</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">55</span> Determination of Starting Design Parameters for Reactive-Dividing Wall Distillation Column Simulation Using a Modified Shortcut Design Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Anthony%20P.%20Anies">Anthony P. Anies</a>, <a href="https://publications.waset.org/abstracts/search?q=Jose%20C.%20Mu%C3%B1oz"> Jose C. Muñoz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A new shortcut method for the design of reactive-dividing wall columns (RDWC) is proposed in this work. The RDWC is decomposed into its thermodynamically equivalent configuration naming the Petlyuk column, which consists of a reactive prefractionator and an unreactive main fractionator. The modified FUGK(Fenske-Underwood-Gilliland-Kirkbride) shortcut distillation method, which incorporates the effect of reaction on the Underwood equations and the Gilliland correlation, is used to design the reactive prefractionator. On the other hand, the conventional FUGK shortcut method is used to design the unreactive main fractionator. The shortcut method is applied to the synthesis of dimethyl ether (DME) through the liquid phase dehydration of methanol, and the results were used as the starting design inputs for rigorous simulation in Aspen Plus V8.8. A mole purity of 99 DME in the distillate stream, 99% methanol in the side draw stream, and 99% water in the bottoms stream were obtained in the simulation, thereby making the proposed shortcut method applicable for the preliminary design of RDWC. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aspen%20plus" title="aspen plus">aspen plus</a>, <a href="https://publications.waset.org/abstracts/search?q=dimethyl%20ether" title=" dimethyl ether"> dimethyl ether</a>, <a href="https://publications.waset.org/abstracts/search?q=petlyuk%20column" title=" petlyuk column"> petlyuk column</a>, <a href="https://publications.waset.org/abstracts/search?q=reactive-dividing%20wall%20column" title=" reactive-dividing wall column"> reactive-dividing wall column</a>, <a href="https://publications.waset.org/abstracts/search?q=shortcut%20method" title=" shortcut method"> shortcut method</a>, <a href="https://publications.waset.org/abstracts/search?q=FUGK" title=" FUGK"> FUGK</a> </p> <a href="https://publications.waset.org/abstracts/145240/determination-of-starting-design-parameters-for-reactive-dividing-wall-distillation-column-simulation-using-a-modified-shortcut-design-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/145240.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">194</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">54</span> Retrofitting Cement Plants with Oxyfuel Technology for Carbon Capture</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Peloriadi%20Konstantina">Peloriadi Konstantina</a>, <a href="https://publications.waset.org/abstracts/search?q=Fakis%20Dimitris"> Fakis Dimitris</a>, <a href="https://publications.waset.org/abstracts/search?q=Grammelis%20Panagiotis"> Grammelis Panagiotis</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Methods for carbon capture and storage (CCS) can play a key role in the reduction of industrial CO₂ emissions, especially in the cement industry, which accounts for 7% of global emissions. Cement industries around the world have committed to address this problem by reaching carbon neutrality by the year 2050. The aim of the work to be presented was to contribute to the decarbonization strategy by integrating the 1st generation oxyfuel technology in cement production plants. This technology has been shown to improve fuel efficiency while providing one of the most cost-effective solutions when compared to other capture methods. A validated simulation of the cement plant was thus used as a basis to develop an oxyfuel retrofitted cement process. The process model for the oxyfuel technology is developed on the ASPEN (Advanced System for Process Engineering) PLUSTM simulation software. This process consists of an Air Separation Unit (ASU), an oxyfuel cement plant with coal and alternative solid fuel (ASF) as feedstock, and a carbon dioxide processing unit (CPU). A detailed description and analysis of the CPU will be presented, including the findings of a literature review and simulation results, regarding the effects of flue gas impurities during operation. Acknowledgment: This research has been conducted in the framework of the EU funded AC2OCEM project, which investigates first and the second generation oxyfuel concepts. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=oxyfuel%20technology" title="oxyfuel technology">oxyfuel technology</a>, <a href="https://publications.waset.org/abstracts/search?q=carbon%20capture%20and%20storage" title=" carbon capture and storage"> carbon capture and storage</a>, <a href="https://publications.waset.org/abstracts/search?q=CO%E2%82%82%20processing%20unit" title=" CO₂ processing unit"> CO₂ processing unit</a>, <a href="https://publications.waset.org/abstracts/search?q=cement" title=" cement"> cement</a>, <a href="https://publications.waset.org/abstracts/search?q=aspen%20plus" title=" aspen plus"> aspen plus</a> </p> <a href="https://publications.waset.org/abstracts/143622/retrofitting-cement-plants-with-oxyfuel-technology-for-carbon-capture" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/143622.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">193</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">53</span> Simulation and Assessment of Carbon Dioxide Separation by Piperazine Blended Solutions Using E-NRTL and Peng-Robinson Models: Study of Regeneration Heat Duty</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Arash%20Esmaeili">Arash Esmaeili</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhibang%20Liu"> Zhibang Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Yang%20Xiang"> Yang Xiang</a>, <a href="https://publications.waset.org/abstracts/search?q=Jimmy%20Yun"> Jimmy Yun</a>, <a href="https://publications.waset.org/abstracts/search?q=Lei%20Shao"> Lei Shao</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A high-pressure carbon dioxide (CO₂) absorption from a specific off-gas in a conventional column has been evaluated for the environmental concerns by the Aspen HYSYS simulator using a wide range of single absorbents and piperazine (PZ) blended solutions to estimate the outlet CO₂ concentration, CO₂ loading, reboiler power supply, and regeneration heat duty to choose the most efficient solution in terms of CO₂ removal and required heat duty. The property package, which is compatible with all applied solutions for the simulation in this study, estimates the properties based on the electrolyte non-random two-liquid (E-NRTL) model for electrolyte thermodynamics and Peng-Robinson equation of state for vapor phase and liquid hydrocarbon phase properties. The results of the simulation indicate that piperazine, in addition to the mixture of piperazine and monoethanolamine (MEA), demands the highest regeneration heat duty compared with other studied single and blended amine solutions, respectively. The blended amine solutions with the lowest PZ concentrations (5wt% and 10wt%) were considered and compared to reduce the cost of the process, among which the blended solution of 10wt%PZ+35wt%MDEA (methyldiethanolamine) was found as the most appropriate solution in terms of CO₂ content in the outlet gas, rich-CO₂ loading, and regeneration heat duty. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=absorption" title="absorption">absorption</a>, <a href="https://publications.waset.org/abstracts/search?q=amine%20solutions" title=" amine solutions"> amine solutions</a>, <a href="https://publications.waset.org/abstracts/search?q=aspen%20HYSYS" title=" aspen HYSYS"> aspen HYSYS</a>, <a href="https://publications.waset.org/abstracts/search?q=CO%E2%82%82%20loading" title=" CO₂ loading"> CO₂ loading</a>, <a href="https://publications.waset.org/abstracts/search?q=piperazine" title=" piperazine"> piperazine</a>, <a href="https://publications.waset.org/abstracts/search?q=regeneration%20heat%20duty" title=" regeneration heat duty"> regeneration heat duty</a> </p> <a href="https://publications.waset.org/abstracts/128137/simulation-and-assessment-of-carbon-dioxide-separation-by-piperazine-blended-solutions-using-e-nrtl-and-peng-robinson-models-study-of-regeneration-heat-duty" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/128137.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">188</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">52</span> Investigations into the Efficiencies of Steam Conversion in Three Reactor Chemical Looping</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ratnakumar%20V.%20Kappagantula">Ratnakumar V. Kappagantula</a>, <a href="https://publications.waset.org/abstracts/search?q=Gordon%20D.%20Ingram"> Gordon D. Ingram</a>, <a href="https://publications.waset.org/abstracts/search?q=Hari%20B.%20Vuthaluru"> Hari B. Vuthaluru</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper analyzes a three reactor chemical looping process for hydrogen production from natural gas, allowing for carbon dioxide capture through chemical looping technology. An oxygen carrier is circulated to separate carbon dioxide, to reduce steam for hydrogen production and to supply oxygen for combustion. In this study, the emphasis is placed on the steam conversion in the steam reactor by investigating the hydrogen efficiencies of the complete system at steam conversions of 15.8% and 50%. An Aspen Plus model was developed for a Three Reactor Chemical Looping process to study the effects of operational parameters on hydrogen production is investigated. Maximum hydrogen production was observed under stoichiometric conditions. Different conversions in the steam reactor, which was modelled as a Gibbs reactor, were found when Gibbs-identified products and user identified products were chosen. Simulations were performed for different oxygen carriers, which consist of an active metal oxide on an inert support material. For the same metal oxide mass flowrate, the fuel reactor temperature decreased for different support materials in the order: aluminum oxide (Al2O3) > magnesium aluminate (MgAl2O4) > zirconia (ZrO2). To achieve the same fuel reactor temperature for the same oxide mass flow rate, the inert mass fraction was found to be 0.825 for ZrO2, 0.7 for MgAl2O4 and 0.6 for Al2O3. The effect of poisoning of the oxygen carrier was also analyzed. With 3000 ppm sulfur-based impurities in the feed gas, the hydrogen product energy rate of the process were found to decrease by 0.4%. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aspen%20plus" title="aspen plus">aspen plus</a>, <a href="https://publications.waset.org/abstracts/search?q=chemical%20looping%20combustion" title=" chemical looping combustion"> chemical looping combustion</a>, <a href="https://publications.waset.org/abstracts/search?q=inert%20support%20balls" title=" inert support balls"> inert support balls</a>, <a href="https://publications.waset.org/abstracts/search?q=oxygen%20carrier" title=" oxygen carrier"> oxygen carrier</a> </p> <a href="https://publications.waset.org/abstracts/79076/investigations-into-the-efficiencies-of-steam-conversion-in-three-reactor-chemical-looping" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/79076.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">328</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">51</span> Modelling and Optimization of a Combined Sorption Enhanced Biomass Gasification with Hydrothermal Carbonization, Hot Gas Cleaning and Dielectric Barrier Discharge Plasma Reactor to Produce Pure H₂ and Methanol Synthesis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Vera%20Marcantonio">Vera Marcantonio</a>, <a href="https://publications.waset.org/abstracts/search?q=Marcello%20De%20Falco"> Marcello De Falco</a>, <a href="https://publications.waset.org/abstracts/search?q=Mauro%20Capocelli"> Mauro Capocelli</a>, <a href="https://publications.waset.org/abstracts/search?q=%C3%81lvaro%20Amado-Fierro"> Álvaro Amado-Fierro</a>, <a href="https://publications.waset.org/abstracts/search?q=Teresa%20A.%20Centeno"> Teresa A. Centeno</a>, <a href="https://publications.waset.org/abstracts/search?q=Enrico%20Bocci"> Enrico Bocci</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Concerns about energy security, energy prices, and climate change led scientific research towards sustainable solutions to fossil fuel as renewable energy sources coupled with hydrogen as an energy vector and carbon capture and conversion technologies. Among the technologies investigated in the last decades, biomass gasification acquired great interest owing to the possibility of obtaining low-cost and CO₂ negative emission hydrogen production from a large variety of everywhere available organic wastes. Upstream and downstream treatment were then studied in order to maximize hydrogen yield, reduce the content of organic and inorganic contaminants under the admissible levels for the technologies which are coupled with, capture, and convert carbon dioxide. However, studies which analyse a whole process made of all those technologies are still missing. In order to fill this lack, the present paper investigated the coexistence of hydrothermal carbonization (HTC), sorption enhance gasification (SEG), hot gas cleaning (HGC), and CO₂ conversion by dielectric barrier discharge (DBD) plasma reactor for H₂ production from biomass waste by means of Aspen Plus software. The proposed model aimed to identify and optimise the performance of the plant by varying operating parameters (such as temperature, CaO/biomass ratio, separation efficiency, etc.). The carbon footprint of the global plant is 2.3 kg CO₂/kg H₂, lower than the latest limit value imposed by the European Commission to consider hydrogen as “clean”, that was set to 3 kg CO₂/kg H₂. The hydrogen yield referred to the whole plant is 250 gH₂/kgBIOMASS. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biomass%20gasification" title="biomass gasification">biomass gasification</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrogen" title=" hydrogen"> hydrogen</a>, <a href="https://publications.waset.org/abstracts/search?q=aspen%20plus" title=" aspen plus"> aspen plus</a>, <a href="https://publications.waset.org/abstracts/search?q=sorption%20enhance%20gasification" title=" sorption enhance gasification"> sorption enhance gasification</a> </p> <a href="https://publications.waset.org/abstracts/164537/modelling-and-optimization-of-a-combined-sorption-enhanced-biomass-gasification-with-hydrothermal-carbonization-hot-gas-cleaning-and-dielectric-barrier-discharge-plasma-reactor-to-produce-pure-h2-and-methanol-synthesis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/164537.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">78</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">50</span> Comprehensive Analysis and Optimization of Alkaline Water Electrolysis for Green Hydrogen Production: Experimental Validation, Simulation Study, and Cost Analysis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Umair%20Ahmed">Umair Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Bin%20Irfan"> Muhammad Bin Irfan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study focuses on designing and optimization of an alkaline water electrolyser for the production of green hydrogen. The aim is to enhance the durability and efficiency of this technology while simultaneously reducing the cost associated with the production of green hydrogen. The experimental results obtained from the alkaline water electrolyser are compared with simulated results using Aspen Plus software, allowing a comprehensive analysis and evaluation. To achieve the aforementioned goals, several design and operational parameters are investigated. The electrode material, electrolyte concentration, and operating conditions are carefully selected to maximize the efficiency and durability of the electrolyser. Additionally, cost-effective materials and manufacturing techniques are explored to decrease the overall production cost of green hydrogen. The experimental setup includes a carefully designed alkaline water electrolyser, where various performance parameters (such as hydrogen production rate, current density, and voltage) are measured. These experimental results are then compared with simulated data obtained using Aspen Plus software. The simulation model is developed based on fundamental principles and validated against the experimental data. The comparison between experimental and simulated results provides valuable insight into the performance of an alkaline water electrolyser. It helps to identify the areas where improvements can be made, both in terms of design and operation, to enhance the durability and efficiency of the system. Furthermore, the simulation results allow cost analysis providing an estimate of the overall production cost of green hydrogen. This study aims to develop a comprehensive understanding of alkaline water electrolysis technology. The findings of this research can contribute to the development of more efficient and durable electrolyser technology while reducing the cost associated with this technology. Ultimately, these advancements can pave the way for a more sustainable and economically viable hydrogen economy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=sustainable%20development" title="sustainable development">sustainable development</a>, <a href="https://publications.waset.org/abstracts/search?q=green%20energy" title=" green energy"> green energy</a>, <a href="https://publications.waset.org/abstracts/search?q=green%20hydrogen" title=" green hydrogen"> green hydrogen</a>, <a href="https://publications.waset.org/abstracts/search?q=electrolysis%20technology" title=" electrolysis technology"> electrolysis technology</a> </p> <a href="https://publications.waset.org/abstracts/169108/comprehensive-analysis-and-optimization-of-alkaline-water-electrolysis-for-green-hydrogen-production-experimental-validation-simulation-study-and-cost-analysis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/169108.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">90</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">49</span> Pinch Analysis of Triple Pressure Reheat Supercritical Combined Cycle Power Plant</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sui%20Yan%20Wong">Sui Yan Wong</a>, <a href="https://publications.waset.org/abstracts/search?q=Keat%20Ping%20Yeoh"> Keat Ping Yeoh</a>, <a href="https://publications.waset.org/abstracts/search?q=Chi%20Wai%20Hui"> Chi Wai Hui</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, supercritical steam is introduced to Combined Cycle Power Plant (CCPP) in an attempt to further optimize energy recovery. Subcritical steam is commonly used in the CCPP, operating at maximum pressures around 150-160 bar. Supercritical steam is an alternative to increase heat recovery during vaporization period of water. The idea of improvement using supercritical steam is further examined with the use of exergy, pinch analysis and Aspen Plus simulation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=exergy" title="exergy">exergy</a>, <a href="https://publications.waset.org/abstracts/search?q=pinch" title=" pinch"> pinch</a>, <a href="https://publications.waset.org/abstracts/search?q=combined%20cycle%20power%20plant" title=" combined cycle power plant"> combined cycle power plant</a>, <a href="https://publications.waset.org/abstracts/search?q=supercritical%20steam" title=" supercritical steam"> supercritical steam</a> </p> <a href="https://publications.waset.org/abstracts/132993/pinch-analysis-of-triple-pressure-reheat-supercritical-combined-cycle-power-plant" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/132993.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">141</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">48</span> Nozzle-to-Surface Distances Effect on Heat Transfer of Two-Phase Impinging Jets </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aspen%20W.%20Glaspell">Aspen W. Glaspell</a>, <a href="https://publications.waset.org/abstracts/search?q=Victoria%20J.%20Rouse"> Victoria J. Rouse</a>, <a href="https://publications.waset.org/abstracts/search?q=Brian%20K.%20Friedrich"> Brian K. Friedrich</a>, <a href="https://publications.waset.org/abstracts/search?q=Kyosung%20Choo"> Kyosung Choo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Heat transfer of two-phase impinging jet on a flat plate surface are experimentally investigated. The effects of the nozzle-to-surface distance and volumetric quality on the Nusselt number are considered. The results show that the normalized stagnation Nusselt number drastically increase with decreasing the nozzle-to-surface distance due to the jet deflection effect. Based on the experimental results, new correlations for the stagnation Nusselt number are developed as a function of the nozzle-to-surface distance. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=jet%20impingement" title="jet impingement">jet impingement</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20jet" title=" water jet"> water jet</a>, <a href="https://publications.waset.org/abstracts/search?q=air%20assisted" title=" air assisted"> air assisted</a>, <a href="https://publications.waset.org/abstracts/search?q=circular%20jet" title=" circular jet"> circular jet</a> </p> <a href="https://publications.waset.org/abstracts/101369/nozzle-to-surface-distances-effect-on-heat-transfer-of-two-phase-impinging-jets" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/101369.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">191</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">47</span> The Effect of Ambient Temperature on the Performance of the Simple and Modified Cycle Gas Turbine Plants</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ogbe%20E.%20E.">Ogbe E. E.</a>, <a href="https://publications.waset.org/abstracts/search?q=Ossia.%20C.%20V."> Ossia. C. V.</a>, <a href="https://publications.waset.org/abstracts/search?q=Saturday.%20E.%20G."> Saturday. E. G.</a>, <a href="https://publications.waset.org/abstracts/search?q=Ezekwe%20M.%20C."> Ezekwe M. C.</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The disparity in power output between a simple and a modified gas turbine plant is noticeable when the gas turbine functions under local environmental conditions that deviate from the standard ISO specifications. Extensive research and literature have demonstrated a well-known direct correlation between ambient temperature and the power output of a gas turbine plant. In this study, the Omotosho gas turbine plant was modified into three different configurations. The reason for the modification is to improve its performance and reduce the fuel consumption and emission rate. Aspen Hysys software was used to simulate both the simple (Omotosho) and the three modified gas turbine plants. The input parameters considered include ambient temperature, air mass flow rate, fuel mass flow rate, water mass flow rate, turbine inlet temperature, compressor efficiency, and turbine efficiency, while the output parameters considered are thermal efficiency, specific fuel consumption, heat rate, emission rate, compressor power, turbine power and power output. The three modified gas turbine power plants incorporate an inlet air cooling system and a heat recovery steam generator. The variations between the modifications are due to additional components or enhancements alongside the inlet air cooling system and heat recovery steam generator incorporated; the first modification has an additional turbine, the second modification has an additional combustion chamber, and the third modification has an additional turbine and combustion chamber. This paper clearly shows ambient temperature effects on both the simple and three modified gas turbine plants. for every 10-degree kelvin increase in ambient temperature, there is an approximate reduction of 3977 kW, 4795 kW, 4681 kW, and 4793 kW of the power output for the simple gas turbine, first, second, and third modifications, respectively. Also, for every 10-degree kelvin increase in temperature, there is a thermal efficiency decrease of 1.22%, 1.45%, 1.43%, and 1.44% for the simple gas turbine, first, second, and third modifications respectively. Low ambient temperature will help save fuel; looking at the high price of fuel presently in Nigeria for every 10 degrees kelvin increase in temperature, there is a specific fuel consumption increase of 0.0074 kg/kWh, 0.0051 kg/kWh, 0.0061 kg/kWh, and 0.0057 kg/kWh for the simple gas turbine, first, second, and third modifications respectively. These findings will aid in accurately evaluating local power generating plants, particularly in hotter regions, for installing gas turbine inlet air cooling (GTIAC) systems. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aspen%20HYSYS%20software" title="Aspen HYSYS software">Aspen HYSYS software</a>, <a href="https://publications.waset.org/abstracts/search?q=Brayton%20Cycle" title=" Brayton Cycle"> Brayton Cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=modified%20gas%20turbine" title=" modified gas turbine"> modified gas turbine</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20plant" title=" power plant"> power plant</a>, <a href="https://publications.waset.org/abstracts/search?q=simple%20gas%20turbine" title=" simple gas turbine"> simple gas turbine</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20efficiency." title=" thermal efficiency."> thermal efficiency.</a> </p> <a href="https://publications.waset.org/abstracts/188879/the-effect-of-ambient-temperature-on-the-performance-of-the-simple-and-modified-cycle-gas-turbine-plants" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/188879.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">31</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">46</span> Continuous Catalytic Hydrogenation and Purification for Synthesis Non-Phthalate</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chia-Ling%20Li">Chia-Ling Li</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The scope of this article includes the production of 10,000 metric tons of non-phthalate per annum. The production process will include hydrogenation, separation, purification, and recycling of unprocessed feedstock. Based on experimental data, conversion and selectivity were chosen as reaction model parameters. The synthesis and separation processes of non-phthalate and phthalate were established by using Aspen Plus software. The article will be divided into six parts: estimation of physical properties, integration of production processes, purification case study, utility consumption, economic feasibility study and identification of bottlenecks. The purities of products was higher than 99.9 wt. %. Process parameters have important guiding significance to the commercialization of hydrogenation of phthalate. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=economic%20analysis" title="economic analysis">economic analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrogenation" title=" hydrogenation"> hydrogenation</a>, <a href="https://publications.waset.org/abstracts/search?q=non-phthalate" title=" non-phthalate"> non-phthalate</a>, <a href="https://publications.waset.org/abstracts/search?q=process%20simulation" title=" process simulation"> process simulation</a> </p> <a href="https://publications.waset.org/abstracts/51541/continuous-catalytic-hydrogenation-and-purification-for-synthesis-non-phthalate" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/51541.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">277</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">45</span> Gas Sweetening Process Simulation: Investigation on Recovering Waste Hydraulic Energy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Meisam%20Moghadasi">Meisam Moghadasi</a>, <a href="https://publications.waset.org/abstracts/search?q=Hassan%20Ali%20Ozgoli"> Hassan Ali Ozgoli</a>, <a href="https://publications.waset.org/abstracts/search?q=Foad%20Farhani"> Foad Farhani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this research, firstly, a commercial gas sweetening unit with methyl-di-ethanol-amine (MDEA) solution is simulated and comprised in an integrated model in accordance with Aspen HYSYS software. For evaluation purposes, in the second step, the results of the simulation are compared with operating data gathered from South Pars Gas Complex (SPGC). According to the simulation results, the considerable energy potential contributed to the pressure difference between absorber and regenerator columns causes this energy driving force to be applied in power recovery turbine (PRT). In the last step, the amount of waste hydraulic energy is calculated, and its recovery methods are investigated. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=gas%20sweetening%20unit" title="gas sweetening unit">gas sweetening unit</a>, <a href="https://publications.waset.org/abstracts/search?q=simulation" title=" simulation"> simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=MDEA" title=" MDEA"> MDEA</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20recovery%20turbine" title=" power recovery turbine"> power recovery turbine</a>, <a href="https://publications.waset.org/abstracts/search?q=waste-to-energy" title=" waste-to-energy"> waste-to-energy</a> </p> <a href="https://publications.waset.org/abstracts/96730/gas-sweetening-process-simulation-investigation-on-recovering-waste-hydraulic-energy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/96730.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">178</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">44</span> Use of Cassava Waste and Its Energy Potential</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=I.%20Inuaeyen">I. Inuaeyen</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20Phil"> L. Phil</a>, <a href="https://publications.waset.org/abstracts/search?q=O.%20Eni"> O. Eni</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fossil fuels have been the main source of global energy for many decades, accounting for about 80% of global energy need. This is beginning to change however with increasing concern about greenhouse gas emissions which comes mostly from fossil fuel combustion. Greenhouse gases such as carbon dioxide are responsible for stimulating climate change. As a result, there has been shift towards more clean and renewable energy sources of energy as a strategy for stemming greenhouse gas emission into the atmosphere. The production of bio-products such as bio-fuel, bio-electricity, bio-chemicals, and bio-heat etc. using biomass materials in accordance with the bio-refinery concept holds a great potential for reducing high dependence on fossil fuel and their resources. The bio-refinery concept promotes efficient utilisation of biomass material for the simultaneous production of a variety of products in order to minimize or eliminate waste materials. This will ultimately reduce greenhouse gas emissions into the environment. In Nigeria, cassava solid waste from cassava processing facilities has been identified as a vital feedstock for bio-refinery process. Cassava is generally a staple food in Nigeria and one of the most widely cultivated foodstuff by farmers across Nigeria. As a result, there is an abundant supply of cassava waste in Nigeria. In this study, the aim is to explore opportunities for converting cassava waste to a range of bio-products such as butanol, ethanol, electricity, heat, methanol, furfural etc. using a combination of biochemical, thermochemical and chemical conversion routes. . The best process scenario will be identified through the evaluation of economic analysis, energy efficiency, life cycle analysis and social impact. The study will be carried out by developing a model representing different process options for cassava waste conversion to useful products. The model will be developed using Aspen Plus process simulation software. Process economic analysis will be done using Aspen Icarus software. So far, comprehensive survey of literature has been conducted. This includes studies on conversion of cassava solid waste to a variety of bio-products using different conversion techniques, cassava waste production in Nigeria, modelling and simulation of waste conversion to useful products among others. Also, statistical distribution of cassava solid waste production in Nigeria has been established and key literatures with useful parameters for developing different cassava waste conversion process has been identified. In the future work, detailed modelling of the different process scenarios will be carried out and the models validated using data from literature and demonstration plants. A techno-economic comparison of the various process scenarios will be carried out to identify the best scenario using process economics, life cycle analysis, energy efficiency and social impact as the performance indexes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bio-refinery" title="bio-refinery">bio-refinery</a>, <a href="https://publications.waset.org/abstracts/search?q=cassava%20waste" title=" cassava waste"> cassava waste</a>, <a href="https://publications.waset.org/abstracts/search?q=energy" title=" energy"> energy</a>, <a href="https://publications.waset.org/abstracts/search?q=process%20modelling" title=" process modelling "> process modelling </a> </p> <a href="https://publications.waset.org/abstracts/38625/use-of-cassava-waste-and-its-energy-potential" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/38625.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">374</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">43</span> Simulation of a Fluid Catalytic Cracking Process</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sungho%20Kim">Sungho Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Dae%20Shik%20Kim"> Dae Shik Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Jong%20Min%20Lee"> Jong Min Lee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fluid catalytic cracking (FCC) process is one of the most important process in modern refinery indusrty. This paper focuses on the fluid catalytic cracking (FCC) process. As the FCC process is difficult to model well, due to its nonlinearities and various interactions between its process variables, rigorous process modeling of whole FCC plant is demanded for control and plant-wide optimization of the plant. In this study, a process design for the FCC plant includes riser reactor, main fractionator, and gas processing unit was developed. A reactor model was described based on four-lumped kinetic scheme. Main fractionator, gas processing unit and other process units are designed to simulate real plant data, using a process flowsheet simulator, Aspen PLUS. The custom reactor model was integrated with the process flowsheet simulator to develop an integrated process model. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fluid%20catalytic%20cracking" title="fluid catalytic cracking">fluid catalytic cracking</a>, <a href="https://publications.waset.org/abstracts/search?q=simulation" title=" simulation"> simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=plant%20data" title=" plant data"> plant data</a>, <a href="https://publications.waset.org/abstracts/search?q=process%20design" title=" process design"> process design</a> </p> <a href="https://publications.waset.org/abstracts/29425/simulation-of-a-fluid-catalytic-cracking-process" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/29425.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">457</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">42</span> Inverted Diameter-Limit Thinning: A Promising Alternative for Mixed Populus tremuloides Stands Management</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ablo%20Paul%20Igor%20Hounzandji">Ablo Paul Igor Hounzandji</a>, <a href="https://publications.waset.org/abstracts/search?q=Benoit%20Lafleur"> Benoit Lafleur</a>, <a href="https://publications.waset.org/abstracts/search?q=Annie%20DesRochers"> Annie DesRochers</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: Populus tremuloides [Michx] regenerates rapidly and abundantly by root suckering after harvest, creating stands with interconnected stems. Pre-commercial thinning can be used to concentrate growth on fewer stems to reach merchantability faster than un-thinned stands. However, conventional thinning methods are typically designed to reach even spacing between residual stems (1,100 stem ha⁻¹, evenly distributed), which can lead to treated stands consisting of weaker/smaller stems compared to the original stands. Considering the nature of P. tremuloides's regeneration, with large underground biomass of interconnected roots, aiming to keep the most vigorous and largest stems, regardless of their spatial distribution, inverted diameter-limit thinning could be more beneficial to post-thinning stand productivity because it would reduce the imbalance between roots and leaf area caused by thinning. Aims: This study aimed to compare stand and stem productivity of P. tremuloides stands thinned with a conventional thinning treatment (CT; 1,100 stem ha⁻¹, evenly distributed), two levels of inverted diameter-limit thinning (DL1 and DL2, keeping the largest 1100 or 2200 stems ha⁻¹, respectively, regardless of their spatial distribution) and a control unthinned treatment. Because DL treatments can create substantial or frequent gaps in the thinned stands, we also aimed to evaluate the potential of this treatment to recreate mixed conifer-broadleaf stands by fill-planting Picea glauca seedlings. Methods: Three replicate 21 year-old sucker-regenerated aspen stands were thinned in 2010 according to four treatments: CT, DL1, DL2, and un-thinned control. Picea glauca seedlings were underplanted in gaps created by the DL1 and DL2 treatments. Stand productivity per hectare, stem quality (diameter and height, volume stem⁻¹) and survival and height growth of fill-planted P. glauca seedlings were measured 8 year post-treatments. Results: Productivity, volume, diameter, and height were better in the treated stands (CT, DL1, and DL2) than in the un-thinned control. Productivity of CT and DL1 stands was similar 4.8 m³ ha⁻¹ year⁻¹. At the tree level, diameter and height of the trees in the DL1 treatment were 5% greater than those in the CT treatment. The average volume of trees in the DL1 treatment was 11% higher than the CT treatment. Survival after 8 years of fill planted P. glauca seedlings was 2% greater in the DL1 than in the DL2 treatment. DL1 treatment also produced taller seedlings (+20 cm). Discussion: Results showed that DL treatments were effective in producing post-thinned stands with larger stems without affecting stand productivity. In addition, we showed that these treatments were suitable to introduce slower growing conifer seedlings such as Picea glauca in order to re-create or maintain mixed stands despite the aggressive nature of P. tremuloides sucker regeneration. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aspen" title="Aspen">Aspen</a>, <a href="https://publications.waset.org/abstracts/search?q=inverted%20diameter-limit" title=" inverted diameter-limit"> inverted diameter-limit</a>, <a href="https://publications.waset.org/abstracts/search?q=mixed%20forest" title=" mixed forest"> mixed forest</a>, <a href="https://publications.waset.org/abstracts/search?q=populus%20tremuloides" title=" populus tremuloides"> populus tremuloides</a>, <a href="https://publications.waset.org/abstracts/search?q=silviculture" title=" silviculture"> silviculture</a>, <a href="https://publications.waset.org/abstracts/search?q=thinning" title=" thinning"> thinning</a> </p> <a href="https://publications.waset.org/abstracts/120220/inverted-diameter-limit-thinning-a-promising-alternative-for-mixed-populus-tremuloides-stands-management" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/120220.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">142</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Aspen%20Olmsted&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Aspen%20Olmsted&page=3">3</a></li> <li class="page-item"><a class="page-link" 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