PDF全文下载：
201805010.pdf
文章编号： 16726987（2018）05006406； DOI： 10.16351/j.16726987.2018.05.010
王晓红， 于新帅， 李明高， 张远鹏， 谢力， 王沛颖
(青岛科技大学 化工学院，山东 青岛 266042）
摘要： 乙腈/正丙醇/甲苯三元物系常压下会形成多个共沸物，普通精馏工艺难以达到分离要求。对其相图分析得知，该物系的共沸组成和共沸温度会随着压力的变化发生明显改变，即证明该物系有压力敏感性，所以提出了变压精馏方案分离该三元物系，并利用剩余曲线图分析证实了该过程的可行性。在利用Aspen Plus对该变压精馏分离过程进行严格稳态模拟的基础上，基于全年经济总费用（TAC）最低为目标函数，优化求得该离工艺流程的最优设备及操作参数。
关键词： 三元共沸物； 变压精馏分离； 模拟优化
中图分类号： TQ 02.8文献标志码： A
引用格式： 王晓红， 于新帅， 李明高， 等. 变压精馏分离三元共沸物系\[J\]. 青岛科技大学学报（自然科学版）， 2018， 39（5）： 6469.
WANG Xiaohong, YU Xinshuai, LI Minggao, et al. Separation of three element azeotrope system by pressureswing distillation\[J\]. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2018, 39(5)： 6469.
Separation of Three Element Azeotrope System by
PressureSwing Distillation
WANG Xiaohong, YU Xinshuai, LI Minggao, ZHANG Yuanpeng, XIE Li, WANG Peiying
(College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)
Abstract: The azeotrope of acetonitrile/propyl alcohol/toluene can form a number of azeotropes at atmospheric pressure so that conventional distillation process is difficult to meet the separation requirements. The analysis of phase diagram shows that the azeotropic composition and azeotropic temperature of the system alter obviously with the change of pressure, which proves that the system show pressure sensitivity. Therefore, a pressureswingdistillation scheme is proposed to separate the ternary systems, and the feasibility of the process is proved by residual curve analysis. Based on the rigorous steadystate simulation of the pressure swing distillation using Aspen Plus, and take the lowest total annual cost (TAC) as the objective function to obtain the optimum equipment and operation parameters of the process.
Key words: ternary azeotropes; pressure swing distillation separation; simulation optimization
收稿日期： 20170804
基金项目： 国家自然科学基金项目（21676151）.
作者简介： 王晓红(1968— )，女，副教授.
