电凝并技术脱除PM2.5的研究现状及发展方向  

Research status and development direction of electric agglomeration technology for PM2. 5 removal

作　　者：竹涛[1] 陈锐[1] 王晓佳[1] 夏妮[1] 赵文娟[1] 李笑阳[1] 

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083

出　　处：《洁净煤技术》2015年第2期6-9,共4页Clean Coal Technology

基　　金：国家自然科学基金资助项目(51108453);中央高校基本科研业务专项基金资助项目(2009QH03);国家环保公益项目(201409004);新世纪优秀人才支持计划资助项目(NCET120967);北京市优秀人才培养资助项目(2012ZG81)

摘　　要：针对传统除尘器无法有效捕集PM2.5的问题,笔者论述了同极荷电颗粒在交变电场中的凝并、异极性荷电粉尘的库伦凝并、异极荷电颗粒在交变电场中的凝并、异极荷电颗粒在直流电场中的凝并、四级凝并5种电凝并技术的研究现状,并提出了电凝并技术的发展方向。5种电凝并技术中,异极荷电颗粒在交变电场中的凝并效果较好;两区式异极荷电颗粒在交变电场中的凝并效果优于三区式。低温等离子体-电凝并技术将低温等离子体-电凝并设备直接置于管道中,对粉尘预荷电;基于原有布袋除尘器开发出双踪电笼布袋除尘装置,联合脱除PM2.5。利用低温等离子体-电凝并技术开发的复合反应器结构紧凑,占地面积小,对细微粒子的除尘效率高达99%,可实现脱硫脱硝脱汞的协同脱除,是电凝并技术的发展方向。In order to improve capture efficiency of traditional filter for PM2. 5,the agglomeration of homopolar and heteropole charged par-ticles in alternating electric field,coulomb agglomeration of heteropole charged particles,agglomeration of heteropole charged particles in direct-current electric field were introduced. The development direction of electric agglomeration was analyzed. The agglomeration effects of heteropole charged particles in alternating electric field was the best. The two-area filter had better fine particle capture performance than the three-area filter. The low temperature plasma electric agglomeration equipment was placed directly in pipe to precharge dust. A doub-le-beam electric cage bag filter was developed based on the original bag filter. Based on the new bag filter,a compound reactor which could remove S,NOx and Hg at the same time had tight structure and small volume. Its dust removal efficiency was able to reach 99%.

关 键 词：电凝并 除尘器 捕集效率 PM2.5 亚微米颗粒物 

分 类 号：X513[环境科学与工程—环境工程]