化工进展2017，Vol.36Issue(2)：695-704,10.DOI:10.16085/j.issn.1000-6613.2017.02.041
湿法烟气脱硝技术现状及发展
Current status and trends on wet flue gas denitration technology
摘要
Abstract
NOx is one of the main pollutants leading to acid rain,smog formation and causing the greenhouse effect. NOx emissions reduction is an inevitable requirement for green development. In this paper,the present situations of wet denitration technology were summarized. The denitration principles of wet denitration technology,including the alkali absorption method,the acid absorption method,the complex absorption method,the liquid phase absorption reduction method,the microbial method,and the oxidation absorption method,were introduced. The oxygen absorption denitration technology principles and technical characteristics of NaClO2,NaClO,H2O2,O3,yellow emulsion oxidation, photocatalytic,electric environmental technology and phosphate slurry with phosphorus mud integrated desulfurization and denitration method were expounded. The development of some new technology of denitrification was analyzed. Photocatalytic and electric environmental technology are developing rapidly and have many advantages,which is an important direction of the coupling of wet denitration. By coupling phosphorus chemical with wet denitration technology and taking full advantage of all aspects of phosphorus chemical production,the integration of internal circulation of raw material and products was achieved. The simultaneous technology route of desulfurization and denitrification in phosphate slurry with phosphorus mud has a good application prospect in phosphorus chemical industry. It was pointed out that in the future the overall requirements of denitration technology would be low-cost,efficient and green. The overall technology trend would be coupling with multiple techniques to achieve the synergistically removal of various pollutants. Different regions and industries adapted to different denitration technologies. Therefore, the resource conditions and product usages should be based on to rationally select technical methods,and to reduce NOx emissions and the processing and recovering costs,as well as to improve the economy efficiency.关键词
氮氧化物/煤燃烧/烟道气/湿法脱硝/氧化吸收Key words
NOx/coal combustion/flue gas/wet denitration/oxidation absorption分类
资源环境引用本文复制引用
杨加强,梅毅,王驰,龙光花,李帅..湿法烟气脱硝技术现状及发展[J].化工进展,2017,36(2):695-704,10.基金项目
云南省重点新产品开发计划（2015BA008）。 （）
