镍电解生产过程中含氯废气综合治理效果分析

镍电解生产过程中氯气利用率低、试剂消耗量大,导致电解镍杂质含量波动,影响电镍品级率的提升及含氯废气治理不达标,通过采用动力波技术、静态混合器和文丘里分配器等技术,实现了镍电解生产过程含氯废气综合治理达标排放和清洁生产,解决了原有废气治理设备、设施效率低,过程设备自动化程度低,不能满足节能环保相关要求等问题.含氯废气治理后,镍电解氯气平均单耗为195.5 kg/t-Ni,氯气利用率提高至96％ ～98％;液碱平均单耗为237.3 kg/t-Ni.

Effect Analysis on Comprehensive Treatment of the Gas Containing Chlorine During the Process of Nickel Electrolytic Production

The low utilization rate of chlorine and high consumption amounts of reagents in the process of nickel electrolysis production lead to the fluctuation of impurity contents of electrolytic nickel, which af- fects the increase of electrolytic nickel grade rate, and the chlorine-containing exhaust gas treatment fails to meet the standard. By adopting dynamic wave technology, static mixer and venturi distributor technolo- gy, the gas containing chlorine during the process of nickel electrolytic production could achieve the standard of discharge and cleaning production. The queston of the low efficiency existing waste gas treatment equipment, facilities, low automation level of process equipment, energy conservation and environmental protection requirements could be solved. After the waste gas containing chlorine was treatmented, chlorine gas average consumption is 195.5 kg/t-Ni, utilization rate of chlorine increase to 96% -98% ; Liquid alkali average consumption is 237.3 kg/t-Ni.