交流高压电凝并用于铅冶炼烟尘PM_(2.5)控制  

PM_(2.5) removal from lead smelting fume using AC electrostatic agglomeration

作　　者：王芳[1] 陈锐[2] 竹涛[2] 李明君[3] 

机构地区：[1]北京矿冶研究总院,北京100160 [2]中国矿业大学(北京)化学与环境工程学院,北京100083 [3]中国电力工程顾问集团华北电力设计院工程有限公司,北京100120

出　　处：《有色金属工程》2016年第4期96-99,共4页Nonferrous Metals Engineering

基　　金：北京市西城区科技计划项目(2014JH34)

摘　　要：有色冶炼工业窑炉排放的PM2.5(粒径小于等于2.5μm的颗粒物)中富集铅、砷、铬、汞、铜等多种重金属元素,是空气中重金属污染物的重要贡献源。选择铅冶炼过程中产生的PM2.5作为重点控制污染物,分析其粒径特征和重金属含量,在此基础上开展交流高压电源电晕放电对细颗粒物的凝并效率研究。试验结果表明,交流高压电晕放电对于PM3.3以下的颗粒物均有明显的凝并作用,在最佳试验条件下,PM2.5的质量分数下降58%以上。该法可有效减少除尘器入口精细粉尘的含量,为有效控制冶炼烟气PM2.5排放及伴生重金属污染物的控制提供方法和工艺。PM2.5 （particulate matter smaller than 2.5 um） emitted from non-ferrous metal smelting is a significant contribution to variety of heavy metals in the atmosphere, such as Pb, As, Cr, Hg and Cu. In this study, chemical properties and size distribution of lead smelting dust were analyzed, and removal efficiency of fine particles in lead dust was tested using AC electrostatic agglomeration. The results show that the coagulation effect of particulate matter smaller than 3.3 microns is obvious. With the best conditions of 35 kV, the agglomeration efficiencies of PM2.5 reached 58%. This method can effectively reduce the PM2.5 entrance content of the dust collector, and provide technology for controlling the PM25 and heavy metal emissions of non-ferrous metal smelting gas.

关 键 词：铅冶炼 PM2.5 电凝并 污染控制 

分 类 号：X51[环境科学与工程—环境工程]