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202104006.pdf
文章编号： 1672-6987（2021）04-0039-08； DOI： 10.16351/j.1672-6987.2021.04.006
李文魁， 王晓红*， 陈敬轩， 丁欣， 田增虎， 杜鹏(青岛科技大学 化工学院，山东 青岛 266042）
摘要： 针对乙腈-乙醇-水物系常压下存在三个二元和一个三元共沸物的特殊情况，设计了节能型变压-萃取精馏四塔流程（PS-ED）和萃取-变压精馏四塔流程（E-PSD）两类工艺，利用Aspen Plus软件进行了以上两种流程模拟,在此基础上以年度总费用（TAC）最低为优化目标对两种工艺分别进行全局优化，并比较两种工艺流程的经济性，结果表明PS-ED流程TAC值比E-PSD节省约6.69%，说明PS-ED流程更具经济性。
关键词： 乙腈-乙醇-水； 萃取精馏； 变压精馏； 节能型优化设计
中图分类号： TQ 028.3文献标志码： A
引用格式： 李文魁， 王晓红， 陈敬轩， 等. 分离乙腈-乙醇-水三元物系的变压/萃取耦合精馏工艺及系统优化设计［J］. 青岛科技大学学报(自然科学版), 2021, 42(4): 39-46.
LI Wenkui， WANG Xiaohong， CHEN Jingxuan， et al. Pressure swing/extraction coupled distillation process and system optimization design for separating acetonitrile-ethanol-water ternary system［J］. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2021， 42（4）： 39-46.
Pressure Swing/Extraction Coupled Distillation Process and System Optimization
Design for Separating Acetonitrile-Ethanol-Water Ternary System
LI Wenkui， WANG Xiaohong， CHEN Jingxuan， DING Xin， TIAN Zenghu， DU Peng
(College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)
Abstract: In view of the special situation, there are three binary and one ternary azeotropes in acetonitrile ethanol water system at atmospheric pressure. Two kinds of energy-saving processes.namely pressure swing extractive distillation four column process (PS-ED) and extraction pressure swing distillation four column process (E-PSD) were designed and simulated by Aspen Plus software. On this basis, taking the minimum annual total cost (TAC) as the optimization objective. The two processes were optimized globally, and the economy of the two processes was compared. The results show that the TAC value of PS-ED process is about 6.69% less than that of E-PSD, indicating that PS-ED process is more economical.
Key words: acetonitrile-ethanol-water; extraction distillation； variable pressure distillation； energy-saving optimization design
收稿日期： 2020-07-01
基金项目： 国家自然科学基金项目（21676151）.
作者简介： 李文魁（1995—），男，硕士研究生.*通信联系人.
