光催化管道反应合成氯乙醛  

Synthesis of Chloroacetaldehyde by Photocatalytic Pipeline Reaction

作　　者：周志强 丁义凯 Zhou Zhiqiang;Ding Yikai(Hangzhou Disheng Import&Export Co.,Ltd.,Hangzhou 310014,China)

机构地区：[1]杭州帝盛进出口有限公司,浙江杭州310014

出　　处：《广东化工》2020年第19期16-16,12,共2页Guangdong Chemical Industry

摘　　要：醋酸乙烯在光照下通过文丘里反应器混合,再经过长管道熟化反应,生成乙酸-α,β-二氯乙酯,再水解制得氯乙醛、醋酸、盐酸的混合物,经中和,减压蒸馏得到30%~40%浓度的氯乙醛。相比较釜式反应,减少了固定投资,提高了反应的安全性;同时通过光催化加快了反应的进程,使得整个反应器比较紧凑。Ethylene acetate was mixed with chlorine gas in Venturi reactor under light,then matured by long pipe to form ethyl acetateα,β-dichloroethyl,thenhydrolyzed to produce a mixture of chloroacetaldehyde,acetic acid and hydrochloric acid.After neutralization and vacuum distillation,30%~40%concentration ofchloroacetaldehyde was obtained.Compared with the kettle reaction,the fixed investment is reduced and the safety of the reaction is improved.At the same time,theprocess of the reaction is accelerated by photocatalysis,which makes the whole reactor more compact.

关 键 词：氯乙醛 光催化 管道反应器 醋酸乙烯 

分 类 号：TQ[化学工程]