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1. 发明授权

US5516280A Apparatus and method for burning a lean, premixed fuel/air mixture with low NOx emission 失效
标题翻译：用于燃烧具有低NOx排放的贫燃混合燃料/空气混合物的装置和方法
公开(公告)号：US5516280A
公开(公告)日：1996-05-14
申请号：US147380
申请日：1993-11-03
申请人： Larry W. Kostiuk , Robert K. Cheng
发明人： Larry W. Kostiuk , Robert K. Cheng
IPC分类号： F23D14/74 , F23D14/46
CPC分类号： F23D14/74
摘要： An apparatus for enabling a burner to stably burn a lean fuel/air mixture. The burner directs the lean fuel/air mixture in a stream. The apparatus comprises an annular flame stabilizer; and a device for mounting the flame stabilizer in the fuel/air mixture stream. The burner may include a body having an internal bore, in which case, the annular flame stabilizer is shaped to conform to the cross-sectional shape of the bore, is spaced from the bore by a distance greater than about 0.5 mm, and the mounting device mounts the flame stabilizer in the bore. An apparatus for burning a gaseous fuel with low NOx emissions comprises a device for premixing air with the fuel to provide a lean fuel/air mixture; a nozzle having an internal bore through which the lean fuel/air mixture passes in a stream; and a flame stabilizer mounted in the stream of the lean fuel/air mixture. The flame stabilizer may be mounted in the internal bore, in which case, it is shaped and is spaced from the bore as just described. In a method of burning a lean fuel/air mixture, a lean fuel/air mixture is provided, and is directed in a stream; an annular eddy is created in the stream of the lean fuel/air mixture; and the lean fuel/air mixture is ignited at the eddy.
摘要翻译：一种用于使燃烧器稳定地燃烧贫燃料/空气混合物的装置。燃烧器将贫燃料/空气混合物引导到流中。该装置包括环形火焰稳定器; 以及用于将火焰稳定器安装在燃料/空气混合物流中的装置。燃烧器可以包括具有内孔的本体，在这种情况下，环形火焰稳定器成形为符合孔的横截面形状，与孔间隔大于约0.5mm的距离，并且安装装置将火焰稳定器安装在孔中。用于燃烧具有低NOx排放的气体燃料的设备包括用于与燃料预混合空气以提供贫燃料/空气混合物的装置; 喷嘴，其具有内部空气孔，贫燃料/空气混合物通过该内部孔流入流中; 和安装在贫燃料/空气混合物流中的火焰稳定器。火焰稳定器可以安装在内孔中，在这种情况下，其形状如上所述与孔的间隔开。在燃烧贫燃料/空气混合物的方法中，提供贫燃料/空气混合物，并将其导入流中; 在贫燃料/空气混合物流中产生环形涡流; 而稀燃料/空气混合物在涡流点燃。

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