一种己内酰胺生产过程中的降耗减排工艺

摘要

己内酰胺生产过程中的无机杂质——硫酸铵对离子交换工序影响较大,本工艺设置低投资的碱洗系统预先对粗己内酰胺水溶液进行碱洗,使其中大多数的无机杂质提前去除,离子交换运行周期得到有效延长,减少了脱盐水及再生剂的消耗,降低了废水排放量,达到降耗减排的目的.%The inorganic impurity-ammonium sulfate in the production process of caprolactam has a great influence on the ion exchange process.This process sets a low-investment alkali washing system to pre-clean the crude caprolactam aqueous solution.Most of the inorganic impurities are removed in advance,and the ion exchange is carried out.The operating cycle has been effectively extended, reducing the consumption of desalinated water and regenerant,reducing the amount of wastewater discharged,and achieving the goal of reducing consumption and reducing emissions.