化工进展2017，Vol.36Issue(z1)：73-79,7.DOI:10.16085/j.issn.1000-6613.2017-0972
环己烷-乙酸乙酯萃取精馏分离的研究
Separation of cyclohexane and ethyl acetate by extractive distillation
康伟 1孙平涛 1梁朋 1姜亚彤 1高瑞昶1
作者信息
摘要
Abstract
Dimethyl sulfoxide (DMSO)was chosen as the solvent for separation of cyclohexane-ethyl acetate system in extractive distillation by the UNIFAC group contribution algorithm and hydrogen bonding interactions.The simulation of vapor-liquid equilibrium for cyclohexane-ethyl acetate system with dimethyl sulfoxide under atmospheric pressure was performed.The simulation results using NRTL mode agreed well with the vapor-liquid experimental data.It indicated dimethyl sulfoxide can effectively break the azeotrope system.With the solvent mass ratio of 1.0 and the reflux ratio of 1.0,the mass fraction of cyclohexane reaches 98.7% in a packed column of 33 theoretical plates,and the recovery was about 87.8%.Finally,Aspen Plus was used to simulate the separation of cyclohexane-ethyl acetate system in continuous extractive distillation process.The cyclohexane was obtained with mass fraction of 99.6% at the top of the extractive distillation column and the mass fraction of ethyl acetate was 99.5% in solvent recovery tower.Dimethyl sulfoxide was recycled at the bottom of the tower.The study can provide reference for further industrial application.关键词
萃取精馏/环己烷/乙酸乙酯/二甲基亚砜/模拟Key words
extractive distillation/cyclohexane/ethyl acetate/dimethyl sulfoxide/simulation分类
化学化工引用本文复制引用
康伟,孙平涛,梁朋,姜亚彤,高瑞昶..环己烷-乙酸乙酯萃取精馏分离的研究[J].化工进展,2017,36(z1):73-79,7.
