2-氯-5-氯甲基吡啶精制工艺研究  

A Study on the Refining Technology of 2-Chlor-5-chlormethylpyridine

作　　者：薛光才 刘孝平 戴锋 吴庆芳 

机构地区：[1]湖北沙隆达股份有限公司,湖北荆州434001

出　　处：《精细化工中间体》2008年第1期11-12,共2页Fine Chemical Intermediates

摘　　要：针对工业生产上采用二次蒸馏法精制2-氯-5-氯甲基吡啶存在的主要问题,通过优化精制工艺,使合成的总收率达到了74%。与原有工艺相比,合成总收率提高了7%,减少了废渣的排放,有效地降低了生产成本。An effective improvement was studied to increase the reaction conversion to 74% by crystallization at low temperature due to the fact that there existed the main problems in twice distillation refining technique of 2-chlor-5- Chlormethylpyridine. The results indicated that the reaction conversion increased by 7% compared with the original technology, and meanwhile reduced the production cost ：The new method had an obvious economic and social benefits, and was worthy of extensions and applications.

关 键 词：2-氯-5-氯甲基吡啶 结晶精制 热敏物质 

分 类 号：TQ226.38[化学工程—有机化工]