化工进展2018，Vol.37Issue(2)：468-474,7.DOI:10.16085/j.issn.1000-6613.2017-0719
离子液体催化反应精馏合成乙酸乙酯工艺模拟
Process simulation of synthesis of ethyl acetate by reactive distillation catalyzed by ionic liquid
摘要
Abstract
In order to study the effect of ionic liquid in reactive distillation,the synthetic process of ethyl acetate by reactive distillation was simulated using ionic liquid 1-butyl-3-methylimidazolium hydrogen sulfate ([BMIM]HSO4)as catalyst.On the basis of the obtained parameters of esterification reaction kinetics,the reaction distillation process was established with Aspen Plus software.The effects of catalyst dosage,distillation plate number,reaction plate number,feed position,feed molar ratio,liquid holdup and reflux ratio on reactive distillation process were investigated.It was found that the mass fraction of ethyl acetate at the top of the column increased with the increase of catalyst dosage,distillation plate number,reaction plate number and trays liquid holdup.The process had the optimum reflux ratio and feed molar ratio.The optimized conditions were as follows: the molar ratio of ionic liquid to acetate acid of 1:2.5,the molar ratio for acetate acid to ethanol of 4:1,the theoretical plate number of 21,the 7th plate for feeding the acetic acid and catalyst,the 19th plate for feeding the ethanol,the trays liquid holdup of 0.1L and the reflux ratio of 4.Under the optimized conditions,the mass fraction of ethyl acetate at the top of the column was 98.73%.关键词
反应精馏/离子液体/酯化/模拟Key words
reactive distillation/ionic liquids/esterification/simulation分类
化学化工引用本文复制引用
董颜箔,何瑞宁,牟春霞,邹昀,童张法..离子液体催化反应精馏合成乙酸乙酯工艺模拟[J].化工进展,2018,37(2):468-474,7.基金项目
广西石化资源加工及过程强化技术重点实验室主任基金(2017Z001)、广西自然科学基金(2014GXNSFA A118061,2017GXNSFDA198047)及广西自然科学基金创新团队(2016GXNSFGA380003)项目. （2017Z001）
