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公开(公告)号：US5636977A
公开(公告)日：1997-06-10
申请号：US322755
申请日：1994-10-13
CPC分类号： F23C9/00 , F23C6/047 , F23C9/08 , F23D14/36 , F23C2201/20 , F23C2201/30
摘要： A burner apparatus and method for reducing nitrogen oxides that are formed during combustion of gaseous fuel. Primary gaseous fuel and excess oxidant are premixed to form a fuel/oxidant mixture which is introduced into and combusted within a primary combustion zone. Primary combustion products are introduced into a secondary combustion zone. Secondary gaseous fuel is also introduced into the secondary combustion zone and is preferably mixed with the primary combustion products. The mixture of secondary gaseous fuel and primary combustion products is combusted in a secondary combustion zone. A portion of the secondary combustion products are internally recirculated into the secondary combustion zone. The overall combustion products can be externally recirculated and introduced into the primary combustion zone. A portion of the fuel/oxidant mixture, with or without the recirculated overall combustion products, can be bypassed around the primary combustion zone and introduced into the secondary combustion zone.
摘要翻译： 一种用于还原在气体燃料燃烧期间形成的氮氧化物的燃烧器装置和方法。 初级气体燃料和过量的氧化剂被预混合以形成燃料/氧化剂混合物，其被引入并在主燃烧区内燃烧。 初级燃烧产物被引入二次燃烧区。 次级气体燃料也被引入到二次燃烧区域中，并且优选与初级燃烧产物混合。 二次气体燃料和一次燃烧产物的混合物在二次燃烧区燃烧。 二次燃烧产物的一部分在内部再循环进入二次燃烧区。 总体燃烧产物可以从外部再循环并被引入主燃烧区。 具有或不具有再循环的总燃烧产物的燃料/氧化剂混合物的一部分可以围绕主燃烧区旁路并被引入二次燃烧区。
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公开(公告)号：US5573391A
公开(公告)日：1996-11-12
申请号：US322758
申请日：1994-10-13
摘要： A burner apparatus and method for reducing nitrogen oxides that are formed during combustion of gaseous fuel. Primary gaseous fuel and excess oxidant are premixed to form a fuel/oxidant mixture which is introduced into and combusted within a primary combustion zone. Primary combustion products are introduced into a secondary combustion zone. Secondary gaseous fuel is also introduced into the secondary combustion zone and is preferably mixed with the primary combustion products. The mixture of secondary gaseous fuel and primary combustion products is combusted in a secondary combustion zone. A portion of the secondary combustion products are internally recirculated into the secondary combustion zone. The overall combustion products can be externally recirculated and introduced into the primary combustion zone. A portion of the fuel/oxidant mixture, with or without the recirculated overall combustion products, can be bypassed around the primary combustion zone and introduced into the secondary combustion zone.
摘要翻译： 一种用于还原在气体燃料燃烧期间形成的氮氧化物的燃烧器装置和方法。 初级气体燃料和过量的氧化剂被预混合以形成燃料/氧化剂混合物，其被引入并在主燃烧区内燃烧。 初级燃烧产物被引入二次燃烧区。 二次气体燃料也被引入到二次燃烧区域中，并且优选与一次燃烧产物混合。 二次气体燃料和一次燃烧产物的混合物在二次燃烧区燃烧。 二次燃烧产物的一部分在内部再循环进入二次燃烧区。 总体燃烧产物可以从外部再循环并被引入主燃烧区。 具有或不具有再循环的总燃烧产物的燃料/氧化剂混合物的一部分可以围绕主燃烧区旁路并被引入二次燃烧区。
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