化工进展 ›› 2012, Vol. 31 ›› Issue (01 ): 189-192.

• 精细化工 • 上一篇    下一篇

微通道反应器中二氯丙醇环化反应

张 跃,李津石,严生虎,刘建武,沈介发   

  1. (常州大学精细化工研究所,江苏 常州 213164)
  • 出版日期:2012-01-05 发布日期:2012-01-25

Research on cyclization reaction of dichloropropanol in a micro-channel reactor

ZHANG Yue,LI Jinshi,YAN Shenghu,LIU Jianwu,SHEN Jiefa   

  1. (Research Institute of Fine Chemical Engineering,Changzhou University,Changzhou 213164,Jiangsu,China)
  • Online:2012-01-05 Published:2012-01-25

摘要: 研究了微通道反应器内二氯丙醇的环化制备环氧氯丙烷的反应,考察了反应温度、原料配比、停留时间等单因素对环氧氯丙烷收率的影响。实验确定了较优的工艺参数组合:环化反应温度50 ℃,二氯丙醇与氢氧化钠的摩尔比1∶1.2,停留时间45 s,NaOH质量分数20%时ECH的收率达到95.2%。在微通道反应的时空转化率要比常规反应高出两个数量级。与传统的工艺方法相比,微通道反应中环氧氯丙烷的收率提高了10%,降低了过程的能耗,废水排放量减少了45%。

关键词: 二氯丙醇, 环化反应, 环氧氯丙烷, 微通道反应器

Abstract: The paper is about the cyclization reaction of dichloropropanol preparing epoxy chloropropane in a micro-channel reactor. The influence of reaction temperature,the ratio of two materials,thedetention time on the yield of epoxy chloropropane are studied. The optimal parameters for reaction process are obtained as 50 ℃ reaction temperature,1∶1.2 for the ratio of dichloropropanol and NaOH,45 s detention time,20% weight concentration of sodium hydroxide solution,under which the yield of the epoxy chloropropane can reach up to 95.2%. The STC in micro-channel reactor is more than 100 times of that in a regular reactor. Comparing with traditional technological process,this new micro-channel reaction process makes the yield of epoxy chloropropane increased by 10% with less energy consumption,and the waste water discharge reduced by 45%.

Key words: dichloropropanol, cyclization reaction, epichlorohydrin, micro-channel reactor