文献类型：期刊文献

中文题名：酯交换合成碳酸二甲酯工艺过程开发研究

英文题名：STUDY ON THE PRODUCTION PROCESS OF DIMETHYL CARBONATE BY TRANSESTERIFICATION

作者：潘鹤林[1];田恒水[1];宋新杰[1];朱云峰[1]

机构：[1]华东理工大学化工学院

年份：2000

卷号：29

期号：1

起止页码：5

中文期刊名：石油与天然气化工

外文期刊名：Chemical engineering of oil & gas

收录：北大核心:【北大核心1996】；CSCD:【CSCD_E2011_2012】；

语种：中文

中文关键词：碳酸二甲酯;精馏;酯交换;萃取

外文关键词：dimethyl carbonate, reactive distillation, transesterification, methanol-propylene carbonate azeotrope, extractive distillation, propylene glycol

摘要：通过酯交换法 ,以甲醇和碳酸丙烯酯为原料 ,反应精馏合成碳酸二甲酯 ,筛选出最佳催化剂 ,确定了其用量 ,考察了原料配比等对反应转化率的影响。同时 ,采用萃取精馏法对甲醇和碳酸二甲酯二元恒沸物的分离过程进行了研究 ,得到了适宜的萃取剂 ,研究了萃取剂的配比和回流比对分离性能的影响。并考察了催化剂和萃取剂的回收及循环使用对反应和分离性能的影响。对副产品丙二醇的分离提纯工艺也进行了考察 ,从而得到了酯交换合成碳酸二甲酯全部工艺条件。
Dimethyl carbonate was synthesized by transesterification of methanol with propylene carbonate using CHS-1 as catalyst by reactive distillation. The effects of catalyst amount and mole ratio of methanol to propylene carbonate et al. on conversion of transesterification had been studied. The separation of azeotrope formed by methanol and dimethyl carbonate was investigated by extractive distillation. The better extractant was selected. The effects of extractant/methanol ratio and reflux ratio on separation had been investigated. The recycle and recovery of catalyst and extractant were investigated. The recovery of propylene glycol and the effect of its purity by reflux ratio were also studied.