{"title":"Design and Control of Ethyl Acetate–Ethanol Separation via Pressure-Swing Distillation","authors":"Liu Shuhan, Sun Yamei, Dong Xiuqin, Yu Yingzhe","doi":"10.1134/S0040579523050469","DOIUrl":null,"url":null,"abstract":"<p>Ethyl acetate can be obtained directly from ethanol by dehydrogenation and this is respected as a promising process. This work explores the design and control of pressure-swing distillation systems for separation of ethyl acetate/ethanol during the ethyl acetate production process. Rigorous steady-state and dynamic simulations are implemented using commercial simulators Aspen Plus and Aspen Dynamics. The dynamic simulation results reveal that the control structure CS1 are unable to maintain the bottom products at their quality specifications while control structure CS2 can only hold the quality specification of ethanol from the bottom of atmospheric column with feed flow rate disturbance. The dynamic responses of dual temperature control (CS3) work pretty well for this partially heat-integrated pressure-swing distillation, even for large feed flow rate and composition disturbances. Effectiveness of dual temperature control with QR/F ratio fixed control structure for feed flow rate disturbance is investigated and results indicated a better performance.</p>","PeriodicalId":798,"journal":{"name":"Theoretical Foundations of Chemical Engineering","volume":"57 5","pages":"917 - 932"},"PeriodicalIF":0.7000,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Theoretical Foundations of Chemical Engineering","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1134/S0040579523050469","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Ethyl acetate can be obtained directly from ethanol by dehydrogenation and this is respected as a promising process. This work explores the design and control of pressure-swing distillation systems for separation of ethyl acetate/ethanol during the ethyl acetate production process. Rigorous steady-state and dynamic simulations are implemented using commercial simulators Aspen Plus and Aspen Dynamics. The dynamic simulation results reveal that the control structure CS1 are unable to maintain the bottom products at their quality specifications while control structure CS2 can only hold the quality specification of ethanol from the bottom of atmospheric column with feed flow rate disturbance. The dynamic responses of dual temperature control (CS3) work pretty well for this partially heat-integrated pressure-swing distillation, even for large feed flow rate and composition disturbances. Effectiveness of dual temperature control with QR/F ratio fixed control structure for feed flow rate disturbance is investigated and results indicated a better performance.
期刊介绍：
Theoretical Foundations of Chemical Engineering is a comprehensive journal covering all aspects of theoretical and applied research in chemical engineering, including transport phenomena; surface phenomena; processes of mixture separation; theory and methods of chemical reactor design; combined processes and multifunctional reactors; hydromechanic, thermal, diffusion, and chemical processes and apparatus, membrane processes and reactors; biotechnology; dispersed systems; nanotechnologies; process intensification; information modeling and analysis; energy- and resource-saving processes; environmentally clean processes and technologies.
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