摘要
通过对己内酰胺聚合装置第一预热器的温度进行调试、控制,并安装第二预热器,考察了己内酰胺热分解的原因,研究结果表明,己内酰胺热分解发生在预热器中的开环过程,而不是在前聚合器顶部的开环过程,240℃是己内酰胺热分解的温度临界点,预热器的温度不宜超过230℃,最好设计两个预热器,既可以满足工艺要求,又不至于使己内酰胺热分解。
The reason that caprolactam decomposite under high temperature condition was studied by adjusting and controling the temperature of preheaters in polymer plant, the result showed that caprolactam decomposited in the preheater during the ring- opening reaction process and the criticl decomposition temperature was 240℃. To prevent caprolactam from decompositing and meet the process requirements, polymer plants had better to install two preheaters and keep the heating temperature lower than 230℃.
出处
《化工进展》
EI
CAS
CSCD
北大核心
2005年第1期82-84,共3页
Chemical Industry and Engineering Progress
关键词
己内酰胺
聚合
预热器
分解
氨
开环
caprolactam, polymerization, preheater, decomposition, ammonia, ring-opening
