Emission and Properties of NOx Generated During Coal Grate-Fired in O2/N2/CO2
With the improvement of environmental protection requirements,the problems of NOx emission from industrial boiler become more and more notable.Flue gas recirculation is a low-NOx combustion technology.It draws out a part of the flue gas from rear flue and forces it into boiler.So the flue gas can serve the combustion or flow field integration.The drawn flue gas can be forced into the boiler directly,or mixed with the primary air or secondary air.To explore a real effective method of low NOx combustion,the article discusses the influence of flue gas recirculation on the formation of NOx in the process of coal grate-fired,in the way of using the unit-boiler,measuring the temperature of coal surface and composition and other important influential parameters.Experimental studies show that under the condition of grate-fired,taking Flue gas recirculation in in main combustion zone,coke combustion zone and burn-out zone could notably diminish the amount of NO.And with the promotion of flue gas recirculation rate,the effect can be more noticeable.
Flue gas recirculation Grate-fired NOx
Li Xu Jian-min Gao Lai-fu Zhao Guang-bo Zhao Shaohua Wu
Combustion Engineering Research Institute,Harbin Institute of Technology,Harbin 150001,China
国际会议
The 7th International Symposium on Coal Combustion(第七届国际煤燃烧学术会议)
哈尔滨
英文
332-337
2011-07-19（万方平台首次上网日期，不代表论文的发表时间）