氯碱生产中二氧化碳的回收利用

Recovery and utilization of carbon dioxide in chlor alkali production

介绍了二氧化碳对氯碱生产废气处理的危害,分析次氯酸钠容易分解的原因。设计独立的二氧化碳吸收装置,充分利用螯合树脂塔再生的低浓度氢氧化钠作为吸收液,吸收二氧化碳生成碳酸钠,回收至配水桶,供盐水工序的化盐使用。

This paper introduces the harm of carbon dioxide to the waste gas treatment of chlor alkali production,and analyzes the reasons why sodium hypochlorite is easy to decompose.An independent carbon dioxide absorption device is designed,which makes full use of the low concentration sodium hydroxide regenerated from the chelating resin tower as the absorption liquid,absorbs carbon dioxide to generate sodium carbonate,which is recycled to the water distribution bucket for the use of salt in the salt water process.