https://scholars.lib.ntu.edu.tw/handle/123456789/598209
標題: | Intensified hybrid reactive-extractive distillation process for the separation of water-containing ternary mixtures | 作者: | Zhang Y.-R Wu T.-W Chien I.-L. I-LUNG CHIEN |
關鍵字: | Aqueous mixture;Azeotropic separation;Extractive distillation;Process intensification;Reactive distillation;Ternary system;Dehydration;Distillation;Distillation columns;Energy conservation;Ethylene;Ethylene glycol;Mixtures;Organic solvents;Thermoanalysis;Aqueous mixtures;Dehydrating agents;Distillation process;Process configuration;Reactive distillations;Reactive extractive distillation;Ternary mixtures;Energy utilization | 公開日期: | 2021 | 卷: | 279 | 來源出版物: | Separation and Purification Technology | 摘要: | Separation of ternary mixture is a challenging task if multiple azeotropes exist among the components, and special distillation techniques should be adopted. For water-containing ternary mixtures with multiple azeotropes, a dehydrating agent, ethylene oxide (EO), can be used to consume water with the production of ethylene glycol (EG) as the product, which can be utilized as entrainer for separating the remaining two components. In this work, systematic thermodynamic analysis was conducted to screen for the feasible ternary systems. After conducting suggested analysis without needing of rigorous process simulation, tert-butyl alcohol (TBA)/ethanol (EtOH)/water, tetrahydrofuran (THF)/EtOH/water and acetonitrile (ACN)/isopropyl alcohol (IPA)/water mixtures were chosen to be suitable for this application. Within the scope of using dehydrating agent, a process configuration of triple column reactive-extractive distillation (TCRED) is developed for three different ternary systems. Subsequently, an intensified process configuration - double column reactive-extractive distillation (DCRED), which combines both functions of reactive distillation and extractive distillation in a single unit, is constructed to significantly reduce capital cost and energy consumption. With the application of further energy-saving schemes in the systems, total annual cost and total operating cost of the final proposed design flowsheets can be considerably saved compared to respective separation systems recently published in open literature. ? 2021 |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85115188364&doi=10.1016%2fj.seppur.2021.119712&partnerID=40&md5=14433368dad35491480a7ce51d024744 https://scholars.lib.ntu.edu.tw/handle/123456789/598209 |
ISSN: | 13835866 | DOI: | 10.1016/j.seppur.2021.119712 |
顯示於: | 化學工程學系 |
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