Removal of NO in Mist by the Combination of Plasma Oxidation and Chemical Absorption
Removal of NO in Mist by the Combination of Plasma Oxidation and Chemical Absorption
复制标题
等离子体氧化与化学吸收相结合去除油雾中的NO
DOI：
10.1021/acs.energyfuels.6b00483
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发表时间：
2016-05
期刊：
影响因子：
5.3
通讯作者：
Ding Li
中科院分区：
文献类型：
--
作者：
Xie Deyuan;Sun Ye;Zhu Tianle;Ding Li
采用同轴式低温等离子体（NTP）反应器对雾中的NO进行氧化脱除。研究了烟气/雾组分对湿法脱硫后模拟烟气中O3生成、NO氧化和NTP脱硝的影响。雾的存在导致O3浓度的显著降低。OH和HO 2等活性物种的形成促进了NO与OH/HO 2的反应。因此，在存在雾的情况下，NO氧化、NOx去除和能量效率显著提高。雾组分对NO氧化和NOx脱除的促进作用大小顺序为：Na 2SO 3雾> FeSO 4雾> Na 2SO 4雾。雾的pH值的增加可以增强氮氧化物与雾的吸收。向混合气体中加入SO2或提高模拟气体中NO2/NOx的比例，可以提高NOx的脱除效率。实验结果表明，NTP氧化烟气中的NO后再进行烟气吸收是可行的，具有较大的应用价值。
A coaxial nonthermal plasma (NTP) reactor was used for oxidizing and removing NO in mist. The effects of gas/mist components on O3 formation, NO oxidation, and NOx removal by NTP in simulated flue gas after wet desulfurization were investigated. The presence of mist results in the significant decrease of O3 concentration. Formation of active species, such as OH and HO2, would promote the reactions between NO and OH/HO2. Thus, the NO oxidation, NOx removal, and energy efficiency are significantly improved in the presence of mist. The promotion effects of mist component on the NO oxidation and NOx removal follow the order: Na2SO3 mist > FeSO4 mist > Na2SO4 mist. Increase of the mist pH can enhance the absorption of nitrogen oxides with the mist. Adding SO2 to the gas mixtures or raising the NO2/NOx ratio of simulated gas increases the NOx removal efficiency. This process demonstrates that NO oxidation by NTP and subsequently absorption by mist are feasible and have great value to practical application.
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