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公开(公告)号:US5205226A
公开(公告)日:1993-04-27
申请号:US850600
申请日:1992-03-13
CPC分类号: F23D1/02 , F23C5/00 , F23C2900/05081
摘要: A low NO.sub.x burner system for a furnace having spaced apart front and rear walls, comprises a double row of cell burners on each of the front and rear walls. Each cell burner is either of the inverted type with a secondary air nozzle spaced vertically below a coal nozzle, or the non-inverted type where the coal nozzle is below the secondary air port. The inverted and non-inverted cells alternate or are provided in other specified patterns at least in the lower row of cells. A small percentage of the total air can be also provided through the hopper or hopper throat forming the bottom of the furnace, or through the boiler hopper side walls. A shallow angle impeller design also advances the purpose of the invention which is to reduce CO and H.sub.2 S admissions while maintaining low NO.sub.x generation.
摘要翻译: 用于具有间隔开的前壁和后壁的炉的低NOx燃烧器系统包括在前壁和后壁中的每一个上的双排电池燃烧器。 每个电池燃烧器是倒置式的,二次空气喷嘴在煤喷嘴下方垂直间隔开,或者是非喷嘴型,煤喷嘴在二次空气口下方。 反向和非反转的单元交替或者至少在下一行单元中以其它指定的图案提供。 总空气的一小部分也可以通过形成炉底的料斗或料斗喉部,或通过锅炉料斗侧壁提供。 浅角叶轮设计还提出了本发明的目的,其目的是在保持低NOx产生的同时减少CO和H2S入口。