己内酰胺生产工艺方法综述  

Summary on Production Process Methods of Caprolactam

作　　者：陈佳星 CHEN Jiaxing(China Pingmei Shenman Nylon Technology Co.Ltd,Pingdingshan 467000,China)

机构地区：[1]中国平煤神马尼龙科技有限公司

出　　处：《河南化工》2019年第10期7-10,共4页Henan Chemical Industry

摘　　要：己内酰胺是重要的化工工业原料,目前生产己内酰胺主要采用甲苯法和苯法,甲苯法可以直接生成己内酰胺;苯法需要先制备中间体环己酮肟,然后通过贝克曼重排反应生成己内酰胺。从原料、催化剂、副产量硫酸铵量等方面进行对比,得出采用环己酮肟化法(HAO)制备中间体环己酮肟,然后采用液相贝克曼重排反应生成己内酰胺路线,这样单耗低、三废少、节能环保,更具有市场前景和发展优势。Caprolactam is an important raw material for chemical industry.At present,the main methods of producing caprolactam are toluene method and benzene method.Caprolactam can be directly synthesized by toluene method.The intermediate cyclohexanone oxime needs to be prepared first in benzene process,then caprolactam is synthesized by Beckman rearrangement reaction.The raw materials,catalysts and by-product ammonium sulfate are compared.The intermediate cyclohexanone oxime is prepared by cyclohexanone oxime (HAO).Then caprolactam is synthesized by liquid Beckman rearrangement reaction.In this way,the unit consumption is low,the three wastes are less,energy saving and environmental protection,and the market prospects and development advantages are more obvious.

关 键 词：己内酰胺 环己酮肟 贝克曼重排反应 

分 类 号：TQ217[化学工程—有机化工]