电晕放电自由基注入提高烟气脱硫效率的研究  

Study on Enhancement of SO_2 Removal by Corona Discharge Radical Injection

作　　者：吴彦[1] 商克峰[1] 李杰[1] 李国锋[1] 李锻[1] 王宁会[1] 

机构地区：[1]大连理工大学静电与特种电源研究所,辽宁大连116024

出　　处：《北京理工大学学报》2005年第z1期193-196,共4页Transactions of Beijing Institute of Technology

基　　金：国家"八六三"计划项目(2003AA642010)

摘　　要：为提高脉冲电晕放电烟气脱硫效率,利用脉冲电晕放电脱硫反应器,采用自由基注入技术,研究氨气 和水蒸气对电极放电特性的影响,以及氨、羟基自由基注入和一氧化氮存在对脉冲电晕放电烟气脱硫效率的影 响．实验结果表明,氨气注入时,电晕电流略有增加,水蒸气注入时,电晕电流降低．采用电晕放电氨、羟基自 由基注入系统,能耗增加约0.36 W·h／m3,但可提高脉冲电晕放电烟气脱硫效率约14％,总脱硫效率达到90％; NO将促进SO2的热化学反应脱除,烟气中注入体积分数为125×10-6 NO,二氧化硫脱除率可提高约15％,能耗 小于2．4 W·h／m3时,SO2脱除率大于90％．For enhancement of SO2 removal by pulsed corona discharge, effects of corona radical injection on SO2 removal have been studied in a pulsed streamer discharge reactor, effect of additives such as NH3 and H2O (g) on discharge characteristics of nozzle electrode has also been studied. Experimental results present that corona current increases slightly with injection of ammonia, and the reverse of water vapor. Corona NH2/NH and OH radical injection can increase pulsed discharge deSO2 efficiency by 14% with an increase in energy consumption by about 0.36 Wh/m3, total deSO2 efficiency can reach 90%; NO can advance SO2 removal by about 15% with addition of 125×10-6 NO, and deSO2 efficiency reaches over 90% at the energy consumption of 2.4 W·h/m3.

关 键 词：流光电晕放电 放电特性 自由基 二氧化硫 羟基 

分 类 号：X51[环境科学与工程—环境工程]