Effect of additive CH 3 COONH 4 on removal of NO and SO 2 by dielectricbarrier-corona discharge coupling methodKAN Qing,YANG Lan,LIU Lu,MA Xiaoxun(School of Chemical Engineering, Northwest University, International Scientific and Technological Cooperation Base forClean Utilization of Hydrocarbon Resources, Chemical Engineering Research Center of the Ministry of Education forAdvance Use Technology of Shanbei Energy, Shaanxi Research Center of Engineering Technology for Clean CoalConversion, Collaborative Innovation Center for Development of Energy and Chemical Industry in Northern Shaanxi,Xi’an710069, Shaanxi, China)Abstract: The removal of NO and SO 2 in simulated flue gas was studied by self-designed dielectricbarrier - corona discharge plasma reactor. The effects of gas composition such as O 2 concentration,CO 2 concentration and water vapor on the removal of NO and SO 2 were investigated. The effect of additiveCH 3 COONH 4 on NO and SO 2 removal and its mechanism of action were also discussed. Experimentalresults showed that the increase of O 2 concentration, CO 2 concentration and H 2 O vapor concentration􀤕􀤕􀤕􀤕 􀦕􀤕 􀦕􀤕􀤕􀤕􀤕 􀦕􀤕 􀦕应用技术DOI:10.16085/j.issn.1000-6613.2019-0152收稿日期:2019-01-22;修改稿日期:2019-04-10。基金项目:国家自然科学基金(21536009);陕西省科技计划(2017ZDCXL-GY-10-03)。第一作者:阚青(1994—),女,硕士研究生。E-mail:784401053@qq.com。通信作者:马晓迅,教授,博士生导师,研究方向为化石燃料和生物质资源的高度转化利用、烟气中SO 2 及NO x 气体的排放控制、二氧化碳捕集与转化利用(二氧化碳高温吸附剂开发、光催化还原二氧化碳、二氧化碳非平衡负离子转化利用)。E-mail:13772424852@163.com。引用本文:阚青, 杨岚, 刘露, 等. 添加剂CH 3 COONH 4 对介质阻挡-电晕放电耦合法脱除NO、SO 2 的影响[J]. 化工进展, 2019, 38(10): 4786-4796.Citation:KAN Qing, YANG Lan, LIU Lu, et al. Effect of additive CH 3 COONH 4 on removal of NO and SO 2 by dielectric barrier-corona discharge couplingmethod[J]. Chemical Industry and Engineering Progress, 2019, 38(10): 4786-4796.· · 4786 第 10 期 阚青等:添加剂CH 3 COONH 4 对介质阻挡-电晕放电耦合法脱除NO、SO 2 的影响would inhibit the removal of NO. After the introduction of CH 3 COONH 4 , these inhibitory effects would beweakened and the removal rate of NO would be greatly increased, but its inhibitory effects would not becompletely eliminated. After the introduction of CH 3 COONH 4 into N 2 /O 2 /SO 2 system, the influence of gascomposition and input current on SO 2 removal was not obvious, and the removal rate of SO 2 could reachabout 94%. When 0.27%CH 3 COONH 4 was added into N 2 /O 2 /CO 2 /H 2 O/NO/SO 2 system, under the initialconcentration of NO was constant, When the content of SO 2 was low, the effect on NO removal was notobvious, the removal rate of NO decreased with the increase of SO 2 concentration, the effect of SO 2 couldbe eliminated by increasing the addition of CH 3 COONH 4 . On the other hand, under the condition ofconstant initial concentration of SO 2 , with the increase of NO content, the removal rate of SO 2 remainedaround 94%. When 0.51%CH 3 COONH 4 was added into N 2 /O 2 /CO 2 /H 2 O/NO/SO 2 system, the removal rateof NO reached 72% when the input current was 2.5A.Keywords: desulfurization and denitrification; dielectric barrier-corona discharge; CH 3 COONH 4 ; gascomponent; removal efficiency