核电站净化树脂多组分离子交换动力学模型分析

Analysis on the multi component ion exchange kinetic model of purification resin for nuclear power plant

反应堆一回路系统采用离子交换树脂混床维持冷却剂净化要求,为实现精准设计,减少失效的放射性废树脂处理量,需要对净化离子交换树脂的离子交换机理和使用寿命进行预测。建立预测模型是行之有效的方法之一,本文介绍相关的微分方程组建立和求解,用于预测净化树脂的运行周期,开展净化树脂多组分离子交换动力学模型研究,为一回路净化树脂运行和失效性分析提供支撑。

The primary circuit system of a nuclear reactor adopts ion exchange resin to maintain the purification requirements of coolant.In order to achieve accurate design and reduce the treatment amount of failed radioactive waste resin,it is necessary to predict the service life of purified ion exchange resin according to ion exchange mechanism.The establishment of prediction model is one of the effective methods to solve the problem.This paper introduces the resules of related differential equations,which can be used to predict the operation cycle of purification resin and carry out the study of multi-component ion exchange kinetic model of purification resin,provide support for the operation and failure analysis of primary purification resin.