酯交换法合成碳酸二甲酯工艺模拟与分析  

Simulation and analysis for the process of synthesizing dimethyl carbonate by transesterification

作　　者：刘玲娜[1] 方涛[2] 焦玉荣[1] 王战辉[1] 

机构地区：[1]榆林学院化学与化工学院,陕西榆林719000 [2]西安交通大学化学工程与技术学院,陕西西安710049

出　　处：《能源化工》2015年第2期73-77,共5页Energy Chemical Industry

基　　金：国家自然科学基金资助项目(21376186);中石油科技创新基金(2014D-5006-0401);榆林学院高层次人才科研启动基金项目(14GK25)

摘　　要：通过化工流程模拟软件Aspen Plus对酯交换法合成碳酸二甲酯(DMC)流程中的反应精馏塔、萃取精馏塔及萃取剂回收塔的主要操作参数进行了优化分析,得到了精馏的最佳操作条件:原料碳酸乙烯酯和甲醇的进料位置分别为第7块、第26块塔板,回流比约0.58;萃取精馏塔中萃取剂和DMC-甲醇二元共沸混合物的进料位置分别为第5块、第27块塔板,回流比约1.0;萃取剂回收塔只有一股进料,进料位置为第6块塔板,回流比约1.7。The main operating parameters of the reactive distillation column, the extraction distillation column and the extractantrecovery column in the process of synthesizing dimethyl carbonate （DMC） by transesterification are optimized and analyzed by AspenPlus software. The optimum operating conditions of rectification are obtained as follows ： in the reactive distillation column, the feed po-sitions for the ethylene carbonate and methanol are the 7th and the 26th plate respectively, the mole reflux ratio is about 0. 58; in the ex-traction distillation column, the feed positions for the extractant and methanol＋DMC are the 5th and 27th plate respectively, the mole re-flux ratio is about 1.0; in the extractant recovery column, the feed position is the Ch plate, and the mole reflux ratio is about 1.7.

关 键 词：碳酸二甲酯 化工流程模拟软件 优化 萃取精馏法 

分 类 号：TQ225.52[化学工程—有机化工]