化工学报2016，Vol.5Issue(5)：2041-2047,7.DOI:10.11949/j.issn.0438-1157.20151536
臭氧氧化结合硫代硫酸钠溶液喷淋同时脱硫脱硝
Simultaneous removal of SO2 and NOx by combination of ozone oxidation and Na2S2O3solution spray
摘要
Abstract
Ozone oxidation and Na2S2O3 solution spray was combined to remove SO2 and NOx simultaneously. This coupling was studied experimentally. The results show that: SO2 and NOxcan be eliminated simultaneously; at O3/NO mole ratio 1.1—1.2, the NOx removal efficiency increases with increasing concentration of Na2S2O3; existence of SO2 can facilitate removal of NOx; the NOx removal efficiency reaches 70% with low emission of SO2 at Na2S2O3concentration 2.0% and at SO2 gas concentration 1030 mg·m?3. Furthermore, the NOx removal efficiency is enhanced with the pH of solution from 2.5 to 9, and reaches 75% at pH 9. The result of 3 hours running experiment indicates that NOx and SO2 can be removed efficiently and simultaneously and the stable and continuous operation is possible, because sodium thiosulfate can facilitate removal of NOx and the NOx is dominantly converted into2NO?. This process could be an efficient approach for eliminating SO2 and NOx simultaneously and could have potential industrial application.关键词
臭氧氧化/污染/烟道气/同时脱硫脱硝/硫代硫酸钠/吸收Key words
ozone oxidation/pollution/flue gas/simultaneous removal of SO2 and NOx/sodium thiosulfate/absorption分类
资源环境引用本文复制引用
杨业,徐超群,朱燕群,林法伟,马强,王智化,岑可法..臭氧氧化结合硫代硫酸钠溶液喷淋同时脱硫脱硝[J].化工学报,2016,5(5):2041-2047,7.基金项目
国家重点基础研究发展计划项目(2012CB214906) （2012CB214906）
国家杰出青年科学基金项目(51422605).supported by the National Basic Research Program of China (2012CB214906) and the National Science Fund for Distinguished Young Scholars of China (51422605). （51422605）
