燃气采暖热水炉低氮氧化物燃烧技术分析  

Analysis of Low NOx Combustion Technologies for Gas-fired Heating and Hot Water Combi-boilers

作　　者：刘文博 周伟业[1,2] 刘贵川 吕昕宇 杨林[1,2] LIU Wenbo;ZHOU Weiye;LIU Guichuan;LYU Xinyu;YANG Lin

机构地区：[1]中国市政工程华北设计研究总院有限公司城市燃气热力研究院,天津300384 [2]国家燃气用具质量监督检验中心,天津300384

出　　处：《煤气与热力》2020年第5期31-36,J0043,共7页Gas & Heat

基　　金：天津市科技计划项目(19PTSYJC00090)。

摘　　要：分析燃气采暖热水炉常用的8种低氮氧化物燃烧技术的原理、特点、存在的问题,8种技术分别是:技术1,罩极式交流风机+更多单片燃烧器的普通燃烧器+单通道燃气比例阀;技术2,罩极式交流风机+水冷燃烧器+单通道燃气比例阀;技术3,罩极式交流风机+水冷燃烧器+双通道燃气比例阀;技术4,直流无刷变速风机+水冷燃烧器+单通道燃气比例阀;技术5,罩极式交流风机+控制器程序控制改变风机转速+水冷燃烧器+单通道燃气比例阀;技术6,罩极式交流风机+控制器程序控制改变风机转速+水冷燃烧器+双通道燃气比例阀;技术7,带霍尔传感器的罩极式交流风机+控制器程序控制改变风机转速+水冷燃烧器+单通道燃气比例阀;技术8,带霍尔传感器的罩极式交流风机+控制器程序控制改变风机转速+水冷燃烧器+双通道燃气比例阀。分析表明:采用技术1的燃气采暖热水炉因其性能稳定、造价低,在对氮氧化物排放量要求在100mg/(kW·h)以下的地区,是较好的选择。采用技术4的燃气采暖热水炉虽然造价高,但性能稳定、氮氧化物排放量较低,在对氮氧化物排放量要求在50 mg/(kW·h)以下的地区应用更为适合。从造价和氮氧化物排放效果来看,技术5和技术7有一定优势。从运行性能和氮氧化物排放效果来看,技术6和技术8有更好的发展前景。从运行稳定性来看,采用技术2和技术3的燃气采暖热水炉在使用中有一定的局限性。The principles,characteristics and problems of eight kinds of low NO_x combustion technologies commonly used in gas-fired heating and hot water combi-boilers are analyzed. The eight technologies are: Technology 1: Shaded pole AC fan + ordinary burner with more single-chip burners + single channel gas proportional valve;Technology 2: Shaded pole AC fan + water cooled burner + single channel gas proportional valve;Technology 3: Shaded pole AC fan +water cooled burner + dual channel gas proportional valve;Technology 4: DC brushless variable speed fan+ water cooled burner + single channel gas proportional valve;Technology 5: Shaded pole AC fan +controller program to change the fan speed + water cooled burner + single channel gas proportional valve;Technology 6: Shaded pole AC fan + controller program to change the fan speed + water cooled burner+ dual channel gas proportional valve;Technology 7:Shaded pole AC fan with Hall sensor + controller program to change the fan speed + water cooled burner+ single channel gas proportional valve;Technology 8: Shaded pole AC fan with Hall sensor + controller program to change the fan speed + water cooled burner + dual channel gas proportional valve. The analysis shows that the gas-fired heating and hot water combiboiler using technology 1 is a better choice in the area where nitrogen oxide emissions are required to be below100 mg/( kW·h) due to their stable performance and low cost. The gas-fired heating and hot water combiboiler using technology 4 has a high cost,but has stable performance and low nitrogen oxide emission,which is more suitable in the area where nitrogen oxide emissions are required to be below 50 mg/( kW·h).In terms of economic cost and nitrogen oxide emission effect,technology 5 and technology 7 have some advantages. In terms of operation performance and nitrogen oxide emission effect,technology 6 and technology 8 have better prospects. In terms of operation stability,the gas-fired heating and hot water combi-boilers using technology 2 and technology 3 have s

关 键 词：燃气采暖热水炉 低氮氧化物燃烧 水冷燃烧器 

分 类 号：TU996.7[建筑科学—供热、供燃气、通风及空调工程]