荷电喷雾脱硫试验与机理分析-环境科学学报.pdf

第 21 卷第 5 期 环 　境 　科 　学 　学 　报 Vol . 21 ,No . 5 2001 年 9 月 ACTA SCIENTIAE CIRCUMSTANTIAE Sep . ,2001 ( ) 文章编号 2001　　　中图分类号 :X7013 　　　文献标识码 :A 荷电喷雾脱硫实验与机理分析 1 2 ( 1. 东华大学环境科学与工程学院 ,上海 　200051 ;2 . 工业环境保护国家工程研究中心 ,北 亢燕铭 ,李世龙 　 京 ,100088) 摘要 :对湿法烟气脱硫系统引入静电效应后产生的脱硫增益作用进行了实验测定. 清水水雾和石灰液浆滴荷电前后的脱硫 效率比较实验结果表明,对于中等 SO 浓度 ,这种效应可使雾滴或浆滴脱硫效率增加 8 个百分点左右. 理论分析指出,荷电 2 对强化烟气脱硫是有益的 ,雾滴或浆滴带电后本质上提高了雾滴的表面活性 ,改善了脱硫通道中雾滴的弥散程度 ,从而加速 了 SO2 的吸收进程. 关键词 :湿法烟气脱硫 ;荷电;雾滴 ;石灰液滴 ;喷雾 Experimental and theoretical analysis of flue gas desulf urization by charged water and slurry droplets 1 2 ( KANG Yanming , LI Shilong 　 1. School of Environmental Science and Engineering , Donghua University , Shanghai 　200051 ; 2 . National Engineering Research Center of Industrial Environmental Protection , Beijing 　100088) Abstract :The enhancement of SO absorption efficiencies in a wet flue gas desulfurization system are investigated by introducing electrostatic 2 effect . SO absorption efficiencies by water and lime slurry droplets , with and without charges , are compared , and the results indicate that an 2 increment of 8 percent in SO removal efficiency can be obtained with a middle initial concentration of SO . The analysis shows that net charg 2 2 es on water and slurry droplets are beneficial for SO capture . The electrostatic effect can improve surface chemical activity and the distribution