反应精馏合成草酸二乙酯的工艺研究  

Study on Synthesis Technology for Diethyl Oxalate by The Reactive Distillation

作　　者：赵翠杰[1] 

机构地区：[1]石家庄白龙化工股份有限公司,河北石家庄050000

出　　处：《河南化工》2012年第1期43-45,共3页Henan Chemical Industry

摘　　要：研究了反应精馏合成草酸二乙酯的工艺条件,在自行设计的反应精馏塔内考察了挟带剂种类及用量、塔釜温度、进料速度、回流进料比对酯化反应的影响。环己烷为较适宜的挟带剂,确定了最佳工艺条件:塔釜温度为110℃,进料速度0.8 mL/min,回流比3。在最佳工艺条件下草酯二乙酯的酯化率达到92.16%。Technological conditions of synthesis diethyl oxalate by the reactive distillation are studied.The effects of the types and dosage of entrainer,tower bottom temperature,feed streams speed,and reflux rate on the esterification are investigated in a self-designed reactive distillation column.Hexamethylene is the optimum entrainer,the optimum conditions is determined as follows：tower bottom temperature 110 ℃,feed streams speed 0.8 mL/min,reflux ratio 3.Under the optimum conditions,the esterification rate can be possible to achieves 92.16%.

关 键 词：反应精馏 草酸二乙酯 回流比 

分 类 号：TQ225.242[化学工程—有机化工]