煤粉工业锅炉臭氧脱硝应用的可行性分析

煤炭在短期内依然是我国能源消费结构的主体,但其燃烧产生的污染物带来了严重的环境污染问题。现有脱硫脱硝工艺普遍占地大且投资及运行成本较高,不适宜煤粉工业锅炉应用。根据臭氧氧化机理,提出一种高效的锅炉烟气污染物脱除方法,并通过文献研究,证明脱硝效果,分析了影响其污染物脱除效率的主要因素,阐述了技术在国外的应用情况。介绍了煤粉工业锅炉系统现有烟气净化技术,提出采用臭氧氧化法耦合煤炭科学技术研究院有限公司自主高倍率灰钙循环烟气脱硫(NGD)技术,完成高阶态氮氧化物和SO_2、SO_3等酸性气体、重金属Hg、As等的有效脱除,达到超低排放效果,对于形成符合煤粉工业锅炉自身特点的一体化烟气净化技术具有重要意义。

Feasibility analysis of denitration by ozone oxidation and its application in coal fired industrial boilers

Coal will still be the main part of the energy consumption structure in China in a short term,but the pollutants produced by its combustion bring serious environmental pollution problems.The existing desulfurization and denitration process generally occupies a large area,and the investment and operation cost is higher,which is not suitable for the application of pulverized coal industrial boilers.According to the mechanism of ozone oxidation,proposed an efficient boiler flue gas pollutants removal methods,and through literature research,proved that denitrification results of this method,analyzed the main factors affecting the pollutant removal efficiency,expoundel the application of technology in foreign countries.Finally introduced the existing flue gas purification technology pulverized coal industrial boiler system,the ozone oxidation coupling of China Coal Research Institute independent high rate ash calcium circulating flue gas desulfurization (NGD) technology,effective removal of nitrogen oxides and completd the high order acid gases such as SO2,SO3,and,heavy metal hg,As,to achieve ultra the effect of low emissions,is of great significance for the formation of the integration of flue gas with the characteristics of pulverized coal industrial boiler purification technology.