Oxidation and Removal of NO From Flue Gas by DC Corona Discharge Combined With Alkaline Absorption

Oxidation and Removal of NO From Flue Gas by DC Corona Discharge Combined With Alkaline Absorption
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直流电晕放电结合碱吸收氧化脱除烟气中NO

DOI:
10.1109/tps.2010.2092445
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发表时间:
2011-02
影响因子:
1.5
通讯作者:
Wang, Hong
Wang, Hong
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Wang, Meiyan;Zhu, Tianle;Wang, Hong

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在线筒等离子体反应器和鼓泡吸收器的组合系统中,研究了放电极性、放电电极结构和O2/CO2比对低温等离子体(NTP)氧化NO和NTP与碱吸收联合脱除模拟烟气中NOx的影响。直流电晕预氧化能有效地促进NOx的吸收。随着外加电压的增加,NO氧化效率和NOx去除效率均增加。正直流放电具有更高的O3生成和NO氧化性能比负的。放电区长度和齿片数的增加显著影响等离子体反应器中的能量密度,并且在固定的外加电压下提高NO氧化效率。提高模拟烟气中O2/ CO2比,可明显提高NO的氧化和NOx的脱除率。
The effects of discharge polarity, discharge electrode configuration, and O2/CO2 ratio on NO oxidation by nonthermal plasma (NTP) and NOx removal by the combination of NTP and alkaline absorption in simulated flue gas were investigated in a combined system of a wire-cylinder plasma reactor and a bubble absorber. The preoxidation of NO by dc corona discharge is effective in promoting the NOx absorption. Both the NO oxidation efficiency and the NOx removal efficiency increase with the increase of applied voltage. The positive dc discharge exhibits much higher O3 formation and NO oxidation performances than the negative one. The increase of the discharge zone length and tooth slice number significantly influences the energy density in the plasma reactor and improves the NO oxidation efficiency for a fixed applied voltage. Increasing the O2/ CO2 ratio in the simulated flue gas obviously enhances the NO oxidation and NOx removal.
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