单井燃气加热炉燃烧器低氮氧化物排放研究  

Research on Low NO_(x) Emission from Burners of Single Well Gas Heating Boilers

作　　者：周宏斌 宋春燕[2] 杨宝刚 周磊 赵金刚[2,3] 常峰 孙恩呈 ZHOU Hongbin;SONG Chunyan;YANG Baogang;ZHOU Lei;ZHAO Jingang;CHANG Feng;SUN Encheng

机构地区：[1]中石化胜利油田分公司工程技术管理中心,山东东营257000 [2]胜利油田分公司技术检测中心,山东东营257000 [3]同济大学机械与能源工程学院,上海200092 [4]胜利油田检测评价研究有限公司,山东东营257000

出　　处：《煤气与热力》2021年第8期39-42,V0044,共5页Gas & Heat

摘　　要：对50 kW单井燃气加热炉的自然引风扩散式燃烧器进行文献分析和燃烧机理研究,结合CFD数值模拟,计算自然引风扩散式燃烧器在不同过剩空气系数下NO_(x)和CO排放量,分析全预混燃烧器在不同过剩空气系数(燃气空气混合物温度为27℃)和不同混合气初始温度(过剩空气系数为1.5)下NO_(x)排放量及低氮排放的技术要求。分析结果表明,自然引风扩散式燃烧器的污染物排放不能满足当前要求,全预混燃烧技术更适合小型单井燃气加热炉的低氮改造;在燃烧器改造中,全预混燃烧器应满足高过剩空气系数下稳定运行、混合气隔热良好等技术要求。Literature analysis and combustion mechanism research on natural draft diffusion burner of 50 kW single well gas heating boiler are carried out.Combined with CFD numerical simulation,the NO_(x) and CO emissions of natural draft diffusion burner under different excess air coefficients are calculated,and the technical requirements of NO_(x) emissions and low nitrogen emissions of fully premixed burner under different excess air coefficients(gas-air mixture temperature is 27℃)and different initial mixture temperatures(excess air coefficient is 1.5)are analyzed.The analysis results show that the pollutant emissions of natural draft diffusion burner cannot meet the current requirements,and the fully premixed combustion technology is more suitable for the low nitrogen transformation of small single well gas heating boiler.In the burner transformation,the fully premixed burner should meet the technical requirements of stable operation under high excess air coefficient and good mixed gas heat insulation.

关 键 词：自然引风 扩散式燃烧 全预混燃烧 低氮燃烧器 

分 类 号：TK223.2[动力工程及工程热物理—动力机械及工程]