O_2/CO_2气氛下生物质与煤混燃的NO排放特性研究  

EXPERIMENTAL STUDY ON NO EMISSION CHARACTERISTIC: CO-FIRING OF BIOMASS AND COAL IN O_2/CO_2 ATMOSPHERE

作　　者：谢敬思[1] 程世庆[1] 张慧敏[1] 张海瑞[1] 刘坤[1] 

机构地区：[1]山东大学能源与动力工程学院,山东济南250061

出　　处：《热力发电》2012年第8期32-36,共5页Thermal Power Generation

摘　　要：在水平管式试验炉上研究生物质与煤配比、燃烧气氛、O2浓度、温度对NO排放特性的影响规律。结果表明,在O2/CO2气氛下,随着生物质比例的增大,生物质混煤NO释放提前,NO排放完毕时间减少,NO的排放量降低;在试验所选取的O2浓度范围内,相同氧浓度时,O2/CO2气氛下生物质混煤NO的排放量小于O2/N2气氛下的排放量,其降低幅度约为10%～20%;随着O2浓度的增加,2种气氛下生物质混煤NO的排放量均升高;在试验所选取的温度范围内,随着温度的升高,生物质混煤NO的排放量增加。NO emission characteristic in O2/CO2 atmosphere was investigated in a horizontal tube furnace,by using flue gas on-line analyzer,and factors such as biomass mixing proportion,combustion environment,concentration of O2,and the temperature were considered.Results show that,in O2/CO2 atmosphere,with the increase of biomass mixing proportion,NO release happens earlier and spends less time,and its emission decreases;when at the same O2 concentration,NO emission in O2/CO2 atmosphere is always less than that in O2/N2,by about 10%-20%;with the increase of O2 concentration,NO emission increases in both atmospheres.Within the experimental temperature range,NO emission rises with the increase of temperature.

关 键 词：O2/CO2气氛 O2/N2气氛 生物质 混煤 NO排放 

分 类 号：TK6[动力工程及工程热物理—生物能]