氯酸盐电解槽废气的处理

Waste gas treatment of chlorate electrolyzers

对氯酸盐电解槽废气的产生进行分析。介绍了电解槽废气处理的工艺:经过预处理,使气体中氯气含量降低50%,再经过以氢氧化钠溶液为氯气吸收剂的串联吸收塔,可使氯气体积分数达2×10-5以下;将该气体通过以钯为催化剂、三氧化二铝为载体的除氧塔进行处理,经水环式真空泵及压缩机输送至下一工序予以利用。提出了废气处理过程中应注意的问题以及应采取的措施。

Based on the analysis about the waste gas produced from chlorate electrolyzers,waste gas treatment technology of chlorate electrolyzers was introduced as follows：firstly,content of chlorine in waste gas is reduced by 50% after pretreatment;then,volume fraction of chlorine is below 2×10-5 through the absorption columns in series,whose absorber is NaOH solution;finally,by the deoxygenization column with palladium as catalyst and Al2O3 as carrier,the gas is transported to the next procedure through water-ring vacuum pump and compressor.Some attentive problems and appropriate measures in the process of waste gas treatment were put forward.