水泥工业煤粉富氧燃烧NO释放特性实验研究  

The NO Release Characteristics of Coal in Oxy-fuel Combustion in Cement Industry

作　　者：范潇[1] 李辉[1,2] 段永华[1] 

机构地区：[1]西安建筑科技大学材料与矿资学院,西安710055 [2]陕西循环经济工程技术院,西安710055

出　　处：《硅酸盐通报》2014年第9期2375-2380,共6页Bulletin of the Chinese Ceramic Society

基　　金：教育部高等学校博士学科点专项科研基金-博导类(20116120110013);陕西省重大科技创新项目(2012zk06-2)

摘　　要：在回转炉实验台架上,分别研究了掺石灰石及掺CaO的情况下,N2/O2、CO2/O2气氛及氧浓度对典型煤种在富氧燃烧条件下燃烧释放NO的影响规律。研究结果表明:CO2/O2气氛下煤粉燃烧NO释放总量较N2/O2气氛下少;CO2/O2气氛下氧浓度的增加对煤粉燃烧NO释放有促进作用;石灰石及CaO对煤粉燃烧NO的生成均具有催化作用,且CaO的催化作用更强。The effect of N2/O2,CO2/O2 atmosphere and the oxygen concentration on NO emission characteristics from coal in oxy-fuel combustion in the presence of limestone and CaO was investigated in a simulated rotary kiln. The results show that the NO release amount under CO2/O2 atmosphere was less than N2/O2; the increase of the oxygen concentration of pulverized coal combustion has a positive role in promoting the release of NO under CO2/O2atmosphere; limestone and CaO on pulverized coal combustion all have catalytic effect on NO generation,the catalysis of CaO is stronger.

关 键 词：富氧燃烧 NO释放 N2/O2、CO2/O2气氛 

分 类 号：TQ172[化学工程—水泥工业]