反应气氛对燃料氮析出规律的影响研究  

Releasing Characteristics of the Fuel Nitrogen from the Pulverized Coal Combusting Under Different Atmosphere

作　　者：仝志辉[1] 王永征[2] 路春美[2] 

机构地区：[1]中北大学机电工程学院,山西太原030051 [2]山东大学能源与动力工程学院,山东济南250061

出　　处：《锅炉技术》2009年第3期23-26,共4页Boiler Technology

基　　金：山东省自然科学基金项目(Y2003F07)

摘　　要：在自行设计的试验装置上研究了HT、LC煤在不气氛下氮的析出特性。结果表明在混有CO的还原性气氛中NOx析出时间延迟,挥发分析与焦氮析出时间有融合的趋势,NOx生成量减少;在高氧浓度混有CO2的气氛中,氮析出时间提前,且在燃烧前期聚集释放,析出量大;在低氧浓度下挥发分氮与焦氮分阶段析出,NOx生成量减少。With the self prepared instruments, research on the NO, emission characteristic of HT, LC coal was carried out under different atmosphere. In this study, it was shown that the time NO, emission bring backward under atmosphere mixed with CO. The releasing time of nitrogen in volatile and char approach, and the amount of NO, reduced. In high O2 concentration atmosphere mixed with CO2, the releasing time of nitrogen moved advance, NO, congregate in the beginner of combustion ;on the contrary, nitrogen released separately and the amount of NO, reduced greatly.

关 键 词：环境工程学 气氛 煤粉 NOx 

分 类 号：TQ534.9[化学工程—煤化学工程]