高压放电与化学氧化协同脱除烟气中NO的影响因素与机理

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• 英文论文题名：Study of the removal and mechanism of NO by corona discharge with chemical oxidation absorption
• 论文作者：蔡伟建 ; 俞杰 ; 李济吾
• 英文论文作者：Cai Weijian ; YU Jie ; LI Ji-wu ; College of Environmental Science and Engineering ; Zhejiang Gongshang University
• 年：2015
• 作者机构：浙江工商大学环境科学与工程学院;
• 论文关键词：电晕放电 ; 一氧化氮 ; 脱硝效率 ; 反应机理 ; 协同作用
• 英文论文关键词：corona discharge ; nitric oxide ; denitration efficiency ; reaction mechanism ; synergistic effect
• 会议召开时间：2015-08-12
• 会议录名称：静电放电：从地面新技术应用到空间卫星安全防护—中国物理学会第二十届全国静电学术会议论文集
• 语种：中文
• 分类号：X701
• 学会代码：WLJD
• 会议名称：静电放电 ; 从地面新技术应用到空间卫星安全防护—中国物理学会第二十届全国静电学术会议
• 会议地点：中国河北石家庄
• 主办单位：中国物理学会静电专业委员会
• 学会名称：中国物理学会静电专业委员会
• 页数：6
• 文件大小：346k
• 原文格式：D
• 会议级别：全国

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、H_2O_2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H_2O_2吸收剂的协同作用下,脱硝效率高达60.2%。
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 H_2O_2,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 H_2O_2,the denitration efficiency was higher up to 60.2%.

引文

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