高酯化率合成的甲基丙烯酸乙酯的分离与精制  

Separation and Refinement of Ethyl Methacrylate Synthesized with High Esterification Rate

作　　者：赵淑艳[1] 孙景辉[1] 

机构地区：[1]中石化齐鲁分公司研究院,淄博255400

出　　处：《精细石油化工进展》2004年第4期28-30,37,共4页Advances in Fine Petrochemicals

摘　　要：采用萃取与精馏相结合的方式,选用4塔流程,对甲基丙烯酸(MAA)与乙醇高酯化率合成的甲基丙烯酸乙酯(EMA)(MAA转化率不低于98％,EMA选择性不低于99％)进行分离精制。采用振动筛板塔,水作苹取剂,萃取过程的适宜操作条件为:温度35℃、振幅16 mm、频率140次/min、相比4:1。经萃取、精馏后,可获得纯度为99.99％的EMA产品。Ethyl methacrylate (EMA) product synthesized with high esterification rate from methacrylic acid (MAA) and ethanol was separated and refined via the combination of extraction and rectification using a four - tower process. The optimum conditions of extraction process were determined. The purity of EMA could be up to 99.99% by the extraction and rectification process.

关 键 词：甲基丙烯酸乙酯 萃取工艺 直接酯化法 精馏 转化率 温度 振幅 频率 

分 类 号：TQ223.24[化学工程—有机化工]