脉冲电晕放电多种污染物协同脱除的研究  

Research on Flue Gas Multi-pollutants Control Enhanced by Pulsed Corona Discharge

作　　者：骆仲泱 王沈兵[1] 赵磊[1] 轩俭勇[1] 岑可法[1] 

机构地区：[1]浙江大学能源清洁利用国家重点实验室,浙江杭州310027

出　　处：《太原理工大学学报》2010年第5期627-632,共6页Journal of Taiyuan University of Technology

基　　金：国家863高技术研究发展计划资助项目(2007AA061804);National High-Tech.R&D Program;China(2007AA061804)

摘　　要：脉冲电晕放电电凝并结合直流收尘不仅能够有效提高对亚微米颗粒的捕集效率,而且对烟气中其他污染物也有脱除效果。通过小型试验平台的大量实验,研究了脉冲峰值电压、脉冲频率、停留时间和初始粉尘浓度对燃煤飞灰中亚微米颗粒脱除效率的影响;脉冲峰值电压、脉冲频率、烟气速度和水蒸气体积分数对SO2,NO,Hg0的氧化效率的影响。结果表明:PM1,SO2,NO和Hg0的协同脱除效率可以分别达到90%,97%,50%和50%以上。通过小型试验台的成功经验,进而设计并建立了中试试验平台。Pulsed corona discharge can not only increase the capture efficiency of submicron particles effectively,but also remove other pollutants in flue gas.In a small test-bed,the influences of pulse peak voltage,pulse frequency,residence time and initial particle concentration on the particle charging,agglomeration and collection,and the influences of pulse peak voltage,pulse frequency,gas velocity,vapor volume fraction on the oxidation efficiency of SO2,NO,and Hg0 were investigated.The results show that good simultaneous removal efficiencies up to 90%,95%,50% and 50% were achieved for PM1,SO2,NO and Hg0,respectively.Then a pilot platform was designed and built.

关 键 词：静电除尘器 电凝并 脉冲电晕放电 亚微米颗粒 

分 类 号：X51[环境科学与工程—环境工程]