摘要
入槽盐水中氯酸盐富集会降低烧碱产品品质,腐蚀设备管线,缩短设备寿命。氯酸盐的产生离不开迁移到阳极室的碱,离子膜上的针孔或破损为阴极室碱向阳极室渗透提供了通道。阳极室加酸或修补更换离子膜可以降低氯酸盐富集。实际生产运用更多的方法是投用氯酸盐分解槽。温度、加酸量、进分解槽淡盐水量以及氯酸盐含量都会对氯酸盐分解槽的投用效果形成影响。此外,针对不同企业的分解槽以及附属管线,提出了改造方案。
Chlorate enrichment in brine fed to electrolyzers will reduce the quality of caustic soda products, corrode equipment and pipelines and shorten the service life of equipment. The formation of chlorate depends on the alkali migrating to the anode chamber. The pinholes or breakage in the ion- exchange membrane provide channels for the alkali permeation from the cathode chamber to the anode chamber. The addition of acid to anionic chamber or patching or replacing defective ion-exchange membrane can reduce the concentration of chlorate. The more practical way in production is to use chlorate decomposition tank. Temperature, acidification, volume of depleted brine in decomposition tank and chlorate content all affect the operation effect of chlorate decomposition tank. In addition, a transformation plan is proposed for different enterprises' decomposition tanks and auxiliary pipelines.
作者
刘凯
杜元鹏
高云
丰晔
高燕军
LIU Kai;DU Yuanpeng;GAO Yun;FENG Ye;GAO Yanjun(Shaanxi Beiyuan Chemical Group Co. , Ltd. , Yulin 719319, China)
出处
《氯碱工业》
CAS
2018年第11期8-12,共5页
Chlor-Alkali Industry
关键词
氯酸盐
烧碱
离子膜电解槽
氯酸盐分解槽
盐水
chlorate
caustic soda
ion exchange membrane electrolyzer
chlorate decomposition tank
brine
