摘要
燃气工业锅炉在使用过程中会产生NOx,破坏大气环境。随着对锅炉烟气排放要求的日益提高,天津市内越来越多的企业的锅炉已经改造完毕或着手开始进行低氮改造。本文详细介绍了燃气工业锅炉低氮燃烧3种方式中的烟气再循环(FGR)技术。利用Fluent模拟了FGR改造后的WNS锅炉炉膛内部温度场的变化;选取型号为WNS10-1.25-Y(Q)蒸汽锅炉,分析了FGR技术对锅炉热效率的影响。
Gas fired industrial boilers will produce NOx to damage the atmospheric environment in the process of use.With the increasing requirements for boiler flue gas emission,more and more enterprises in Tianjin have completed the transformation of boilers or started to carry out low nitrogen transformation.In this paper,flue gas recirculation(FGR)as one of the three modes of low nitrogen combustion in gas fired industrial boilers,was introduced in detail.Fluent was used to simulate the change of temperature field inside the furnace of WNS boiler after FGR transformation;The model WNS10-1.25-Y(Q)steam boiler was selected to analyze the influence of FGR technology on boiler thermal efficiency.
作者
刘畅
李冬屹
张宝祥
陈志刚
许崇涛
Liu Chang;Li Dongyi;Zhang Baoxiang;Chen Zhigang;Xu Chongtao(Tianjin Special Equipment Inspection Institute,Tianjin,300192)
出处
《中国特种设备安全》
2023年第10期15-20,共6页
China Special Equipment Safety
关键词
燃气工业锅炉
烟气再循环
燃烧特性
热效率
Gas industrial boiler
Flue gas recirculation
Combustion characteristics
Thermal efficiency
