萃取精馏分离苯-异丙醇共沸体系的模拟

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英文篇名：Simulation of separation of benzene-isopropanol azeotrope by extractive distillation 作者：李文秀 ; 陈金玲 ; 张弢 英文作者：LI Wen-xiu;CHEN Jin-ling;ZHANG Tao;Liaoning Provincial Key Laboratory of Chemical Separation Technology,Shenyang University of Chemical Technology; 关键词：COSMO-RS ; Aspen ; Plus ; 萃取精馏 ; 苯 ; 异丙醇 英文关键词：COSMO-RS;;Aspen Plus;;extractive distillation;;benzene;;isopropanol 中文刊名：XDHG 英文刊名：Modern Chemical Industry 机构：沈阳化工大学辽宁省化工分离技术重点实验室; 出版日期：2019-01-04 14:36 出版单位：现代化工 年：2019 期：v.39;No.388 基金：国家自然科学基金项目(21576166) 语种：中文; 页：XDHG201902048 页数：4 CN：02 ISSN：11-2172/TQ 分类号：217-220

摘要

通过COSMO-RS软件计算,选择离子液体1-己基-3-甲基咪唑醋酸盐([HMIM]Ac)作为萃取精馏分离苯-异丙醇的共沸物合适的萃取剂。采用Aspen Plus流程模拟软件模拟苯-异丙醇共沸体系的连续萃取精馏过程。对两塔连续萃取精馏工艺过程,使用灵敏度分析工具优化,得出当回流比为1. 4、溶剂比为0. 365时,产品苯的纯度为99. 99%,异丙醇的纯度为99. 99%。此结果可为苯-异丙醇共沸体系的萃取精馏过程工艺设计提供理论基础。
        Based on calculation by COSMO-RS software,ionic liquid 1-hexyl-3-methylimidazolium acetate( [HMIM]Ac) is selected as a suitable extractant for the separation of benzene-isopropanol azeotrope by extractive rectification.Aspen Plus process simulation software is used to simulate the extractive distillation of benzene-isopropanol azeotrope system.A two-column extractive distillation process is optimized by means of the sensitivity analysis tool,and the result shows that the mole purities of benzene and isopropanol both are 99. 99% when the reflux ratio is 1. 4 and the solvent ratio is 0. 365.This result provides a theoretical basis for the process design of the extractive distillation process of the benzene-isopropanol azeotrope system.

引文

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