ε-己内酰胺水解聚合新工艺的研究

Study on a New Process: Hydrolytic Polymerization of ε-Caprolactam

本文以理论分析所提出的优化操作条件作为ε-己内酰胺水解聚合新工艺的构思基础,制定了高压前聚合继以常压脱水缩聚的工艺路线。在间歇式高压釜内进行的系列试验,不仅验证了动力学模型的正确性,还为新工艺的连续化提供了重要的依据。在原用的动力学方程中,以水的活度代替水的真实浓度,大大改善了数学模型的适用范围,使其更能反映实际生产过程。

This paper dealt with a new process for hydrolytic polymerization of e-caprolactam, in which the ring-opening reation takes place under high pressure, followed by polycondensation at atmospheric pressure. The process is developed basing upon theoretical analysis of optimal performance. Data acquired from a series of batch process experiments under high pressure not only verified the kinetic model but also provided the guideline for continuous operation of the process. By using ac-tivety of water, the model is satisfactorily extended to the practical operating region.