氯碱离子膜运行过程中性能衰减原因

Reasons analysis of performance degradation of chlor-alkali ion exchange membrane in the course of running

详细分析了国产氯碱离子膜在电解运行过程中可能出现性能衰减的原因,包括:膜表面的机械损伤,高温环境中电解液的影响,电解运行过程对亲水涂层的影响,盐水中杂质沉积的影响。并利用相关仪器进行了定性、定量的分析验证。提出减缓离子膜性能衰减的方案。

The reasons of performance degradation of chlor-alkali ion-exchange membrane in the course of running are analyzed.The reasons include:the mechanical damage of membrane surface,the influence of electrolyte in high temperature environment,the influence of electrolysis process on hydrophilic coating,and the influence of impurity deposition in brine.The degradation was verified qualitatively or quantitatively by instrumental analysis.A scheme to slow down the degradation of ionexchange membrane performance is proposed.