【作者】 蔡伟建； 俞杰； 李济吾；

【Author】 Cai Weijian;YU Jie;LI Ji-wu;College of Environmental Science and Engineering, Zhejiang Gongshang University;

【机构】 浙江工商大学环境科学与工程学院；

【摘要】 本文在电晕放电与化学氧化协同作用下,供电电压、水流量、吸收剂浓度和种类以及NO浓度、烟气流量对脱硝效率的影响,探讨协同脱硝的反应机理。将压气罐中NO气体释放,经流量计与气泵提供的空气混合均匀形成配气系统,输送至电晕放电反应器内进行反应,最后排放。水泵循环进水至反应器内壁形成水膜,水中添加一定浓度的NaClO、氨水、Fe（Ⅱ）EDTA、H₂O₂进行液相吸收氧化。在协同反应器的进出口处取样,采用testo 350XL烟气分析仪分析NO浓度,计算脱硝效率。结果表明,脱硝效率随着电压、水流量、吸收剂浓度的增加而增加,但随着初始NO浓度、烟气流量的增加而下降。在电压和H₂O₂吸收剂的协同作用下,脱硝效率高达60.2%。更多还原

【Abstract】 Effect of the voltage,water flow,concentration and species of liquid solution,initial concentration of NO and flue gas flow on the denitration efficiency by corona discharge with chemical oxidation were investigated.The reaction mechanism of NO removal by corona discharge with chemical oxidation was discussed.NO released from gas cylinder and mixed with air in mixer,then transported to the discharged reactor.The water film,which contain a certain concentration of NaClO,ammonia water,Fe（Ⅱ）EDTA,and H₂O₂,was formed on the reactor inner wall by water pump.The concentration of NO was analyzed by testo 350XL at inlet and outlet of the reactor.The denitration efficiency was obtained.The experimental results show that the denitration efficiency increased with the increasing of voltage,water flow,and concentration of absorption solution,but decreased with the increasing of initial concentration of NO and flue gas flow.Under the synergistic effect of corona discharge and H₂O₂,the denitration efficiency was higher up to 60.2%.更多还原