摘要
根据萃取精馏原理,采用正交试验设计,运用计算机对实验数据进行最优化处理,确定了萃取精馏分离甲醇与碳酸二甲酯二元共沸物的最佳工艺条件:以甲苯为萃取剂,单圈为填料,回流比为5:1,滴加速率为5:1,萃取剂配比为2:1,以上述工艺条件,进行DMC-甲醇分离,所得的碳酸二甲酯纯度为99.99%。
Extractive distillation of dimethyl carbonate from its azeotrope with methanol using toluene as extracting agent was studied. It was found that filler, dropping speed, reflux ratio and extracting agent ratio influenced remarkably the separation effect of extractive distillation and the optimum process conditions for separating the DMC-CH3OH azeotrope were determined as follows： toluene as extracting agent, single circle as filler, reflux ratio 5, dropping speed 5 ： 1 and extracting agent ratio 2 ： 1. Under these conditions, the purity of dimethyl carbonate was up to 99.99 %.
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
2005年第4期51-54,共4页
Natural Gas Chemical Industry
基金
浙江省教育厅重点科研计划项目(编号20030836)
浙江省自然科学基金项目(编号Y404082)
浙江省高校中青年学科带头人资助项目
关键词
碳酸二甲酯
甲醇
共沸物
萃取精馏
dimethyl carbonate
methanol
azeotrope
extractive distillation
toluene
