电晕放电同时脱硫脱硝机理研究  

Mechanism Study of Simultaneous Removal of SO_2 and NOx by Corona Discharge

作　　者：吴祖良[1] 孙培德[1] 李济吾[1] 余权[2] 高翔[2] 骆仲泱 岑可法[2] 

机构地区：[1]浙江工商大学环境工程系 [2]浙江大学能源清洁利用国家重点实验室

出　　处：《电站系统工程》2007年第3期1-3,14,共4页Power System Engineering

基　　金：国家863计划资助项目(2002AA529180);教育部博士点基金资助项目(20020335061);国家973项目(2006CB200303)

摘　　要：电晕放电同时脱硫脱硝技术是最有应用价值的烟气综合治理技术之一。从自由基的产生、SO2和NOx的脱除以及它们之间相互影响方面着手,对电晕放电烟气同时脱硫脱硝过程进行了深入的分析。从结果可知,电晕放电过程中自由基的产生主要依靠电子碰撞和电荷转移激发。在NOx的脱除过程中氧化作用起着决定性作用,而单独的放电过程对SO2脱除的作用不大,其脱除还得依靠碱性物质的加入。烟气中的小颗粒或气溶胶表面发生的异相反应能够促进SO2和NOx的脱除。The technique of simultaneous removal of SO2 and NO, using corona discharge is one of the flue gas integration treatment techniques of having best application value. The radical formation, simultaneously removal process of SO2 and NOx, and influence each other were discussed. From the results, it can be known that the radicals are generated through electron collision and charge transfer. NOx removal depends on the oxidation function. However, the discharge process has no obvious effect on SO2 removal. Its removal needs alkaline matter. The heterogeneous reactions are happened in the surface of small particle or aerosol of the flue gas, which improves the removals of SO2 and NOx.

关 键 词：电晕放电 自由基 脱硫脱硝 机理 

分 类 号：X701[环境科学与工程—环境工程]