UV-Enhanced NaClO Oxidation of Nitric Oxide from Simulated Flue Gas
UV-Enhanced NaClO Oxidation of Nitric Oxide from Simulated Flue Gas
复制标题
模拟烟气中一氧化氮的紫外增强 NaClO 氧化
DOI：
10.1155/2016/6065019
复制
发表时间：
2016
影响因子：
3
通讯作者：
Pan Xinxiang
中科院分区：
文献类型：
--
作者：
Yang Shaolong;Han Zhitao;Dong Jingming;Zheng Zisheng;Pan Xinxiang
利用实验室模拟柴油机烟气，研究了基于紫外光强化次氯酸钠氧化的湿式脱硝技术。研究了紫外光照射时间、NaClO溶液初始pH值和有效氯浓度对降解效果的影响。结果表明，当紫外光照射时间为17.5min，NaClO溶液初始pH值为6时，UV/NaClO溶液对NO的去除率比NaClO溶液提高了19.6%。同时，当NaClO溶液中有效氯浓度从0.1wt%降低到0.05wt%时，UV/NaClO溶液对NO的去除率比NaClO溶液提高了19.6%到24%。初步探讨了NaClO溶液光解和UV/NaClO法脱除NO的反应途径。结果表明，HOCl可能是最活跃的物种，通过光解反应释放出大量的紫外光氧化剂，在NO去除过程中发挥重要作用。
A wet de-NOx technique based on an UV-enhanced NaClO oxidation process was investigated for simulated flue gas of a diesel engine using a bench-scale reaction chamber. The effects of UV irradiation time, initial pH value, and available chlorine concentration of NaClO solution were studied, respectively. The results showed that when the UV irradiation time was 17.5 min and the initial pH value of NaClO solution was 6, NO removal efficiency of UV/NaClO solution was increased by 19.6% compared with that of NaClO solution. Meanwhile, when the available chlorine concentration of NaClO solution decreased from 0.1 wt% to 0.05 wt%, the enhancement in NO removal efficiency of UV/NaClO solution increased from 19.6% to 24%, compared with that of NaClO solution. The reaction pathways of NaClO solution photolysis and NO removal by UV/NaClO process were preliminarily discussed. The results suggested that HOCl might be the most active species that released many UV-induced photooxidants through photolysis reactions, which played an important role in NO removal process.