New process design for reuse of redundant hypochlorite in chlor-alkali plants

被引：0

作者：

Tang, Xiaohong ^{[1
,2
]}

Liu, Fu ^{[3
]}

机构：

[1] School of Material Science and Engineering, Sichuan University, Chengdu 610065, China

[2] Physics Department, Sichuan College of Education, Chengdu 610041, China

[3] Chengda Engineering Corporation of China, Chengdu 610041, China

来源：

Huagong Xuebao/Journal of Chemical Industry and Engineering (China) | 2008年 / 59卷 / 04期

关键词：

Byproducts - Chlorine compounds - Electrolysis - Pollution - Sodium chloride - Sodium compounds;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Sodium hypochlorite is an effective by-product in the chlor-alkali production in chlorine equilibrium and waste gas treatment. When start-up and shut-down are frequent in the chlor-alkali plant, a over bulged hypochlorite stock often appears. If the large quantity of hypochlorite is directly discharged, it will cause heavy pollution and material waste, and it will affect the normal plant running when the bulged hypochlorite stock gets worse. Based on the decomposition of hypochlorite under acidic condition, a reaction unit was designed in recycle use of the hypochlorite solution to produce NaCl useful for electrolysis and chlorine gas for market sale. In this way the over bulged hypochlorite stock problem could be solved. Not only there is no hypochlorite discharged, but also the environment could be protected and economic benefit could be achieved by recycle use of hypochlorite. The investment will be recovered in 2-3.5 years.

引用

页码：1065 / 1069