高压电晕放电与液相化学氧化协同脱除烟气中NO的影响因素与机理

发布时间：2018-03-28 12:54

  本文选题：电晕放电　切入点：氧化吸收　出处：《高电压技术》2016年05期

【摘要】：为了解高压电晕放电与液相化学氧化协同脱硝的影响因素与机理,研究了在高压电晕放电与液相化学氧化的协同作用下,供电电压、水体积流量、吸收剂种类以及NO初始质量浓度、烟气体积流量等因素对脱硝效率的影响,探讨了高压电晕放电与液相化学氧化协同脱硝的机理。NO气体经流量计与空气混合形成模拟气体,输送至反应器内进行反应后排放。测定NO质量浓度,计算烟气脱硝效率。结果表明:脱硝效率随着供电电压、水体积流量、吸收剂浓度的增加而增加,但随着NO初始质量浓度、烟气体积流量的增加而下降。在3 k V高压电晕放电和质量分数为5%的H_2O_2协同作用下,烟气脱硝效率高达60.2%。高压电晕放电和液相化学氧化烟气脱硝具有明显的协同效应。脱硝机理主要包括气相电晕放电等离子体氧化反应和液相氧化吸收反应。
[Abstract]:In order to understand the influencing factors and mechanism of synergistic denitrification between high voltage corona discharge and liquid phase chemical oxidation, the power supply voltage and water volume flow rate were studied under the synergistic action of high voltage corona discharge and liquid phase chemical oxidation. The effects of the kinds of absorbent, the initial mass concentration of no and the volume flow rate of flue gas on denitrification efficiency are discussed. The mechanism of synergistic denitrification between high pressure corona discharge and liquid phase chemical oxidation is discussed. No gas is mixed with air through Flowmeter to form simulated gas. No concentration was measured and flue gas denitrification efficiency was calculated. The results showed that denitrification efficiency increased with the increase of power supply voltage, water volume flow rate and absorbent concentration, but with the initial mass concentration of no. Under the synergistic effect of 3 kV high voltage corona discharge and 5% H_2O_2, The denitrification efficiency of flue gas is as high as 60.2. There is an obvious synergistic effect between high-pressure corona discharge and liquid-phase chemical oxidation flue gas denitrification. The mechanism of denitrification mainly includes gas phase corona discharge plasma oxidation reaction and liquid phase oxidation absorption reaction.
【作者单位】： 浙江工商大学环境科学与工程学院;
【基金】：浙江省公益性技术研究计划(2015C33044) 浙江环保科技计划(2013A031)~~
【分类号】：X701
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本文编号：1676411