变压精馏提取DMC/H_2O在羰化合成DMO中的应用  

Application of pressure swing distillation of DMC/H_2O during carbonylation synthesis of DMO

作　　者：李霞 王传成 

机构地区：[1]山东兴泰机械装备工程有限责任公司,山东临沂276017 [2]久泰能源科技有限公司,山东临沂276017

出　　处：《氮肥技术》2016年第3期19-21,共3页Nitrogenous Fertilizer Technology

摘　　要：本文阐述了在草酸二甲酯(DMO)羰化合成生产过程中,针对副产品DMC/H_2O的回收提出了两塔变压精馏工艺,根据碳酸二甲酯(以下简称DMC)和水在不同温度和压力下共沸物所表现的不同特性,对DMC/H_2O混合物采用二塔变压精馏工艺分离提纯,从而得到合格的DMC副产品,优化了草酸二甲酯(DMO)羰基化合成反应,分析了相应的经济效益。The paper puts forward two tower pressure swing distillation process aiming at recovering DMC/H_2O byproducts during the carbonylation synthesis of dimethyl oxalate（DMO）. According to the different characteristics of dimethyl carbonate（DMC）and water azeotrope at different temperature and pressure, qualified DMC byproduct is obtained by two tower pressure swing distillation of DMC/H_2O mixture. Dimethyl oxalate carbonylation synthesis reaction is optimized and corresponding economic benefits are analyzed.

关 键 词：(DMO)羰化合成 副产品DMC/H2O 变压精馏回收 经济效益 

分 类 号：TQ225.24[化学工程—有机化工]