镁电解氯气净化系统的优化研究

The Optimization of Chlorine Purification System in Magnesium Electrolytic

主要针对多极镁电解槽生产氯气净化系统存在的除尘效率低、效果差及气体夹带酸雾多等问题进行了分析,并采取布袋除尘前增加重力沉降箱、优化硫酸洗涤塔淋洗用泵及管道结构、优化布袋除尘器用布袋材质,改变除沫器除沫丝网网孔直径等措施,将多极镁电解槽生产氯气中的粉尘由优化前的400μg/g降至目前的10μg/g以内;氯气夹带硫酸酸雾由优化前的700μg/g降至目前的100μg/g以内,使氯气质量达到了氯化工序制备粗Ti Cl4和液化系统对氯气质量的要求,大大降低浓硫酸及氯压机泵备件的消耗、避免了对氯气液化系统的堵塞和腐蚀严重等问题,降低了氯气净化系统的运行成本。

This article analyzed chlorine purification system＇s problems in magnesium electrolyzer producing process, such as low efficiency of dust removal and gas smuggles acid mist. By adding gravity settling before dust removal, optimizing leaching pumps and pipe structure in sulfuric acid scrubbing tower, changing material quality of the bag filter and mesh diameter of screen mesh in demister, dust capacity in chlorine dropped to less than 10 μg/g from 400 μg/g. Sulfuric acid mist capacity in chlorine dropped to less than 100μg/g from 700 μg/g,and chlorine quality met requirements for both chlorination process producing titanium tetrachloride and liquefaction system, which significant- ly reduced the consumption of concentrated sulfuric acid and chlorine compressor pump spare parts, avoided problems of blocking and serious corrosion of chlorine liquefaction system, and reduced operating cost of chlorine purification system.