公开(公告)号：US09869469B2

公开(公告)日：2018-01-16

申请号：US14810897

申请日：2015-07-28

申请人： MITSUBISHI HEAVY INDUSTRIES, LTD.

发明人： Keigo Matsumoto ,  Koutaro Fujimura ,  Kazuhiro Domoto ,  Toshimitsu Ichinose ,  Naofumi Abe ,  Jun Kasai

IPC分类号： F23D1/00 ,  F23C6/04

CPC分类号： F23D1/005 ,  F23C6/045 ,  F23C2201/20 ,  F23D1/00 ,  F23D2201/10 ,  F23D2201/20 ,  F23D2209/20

摘要： A combustion burner 1 includes a fuel nozzle 2 that injects fuel gas prepared by mixing solid fuel and primary air, secondary air nozzles 3, 4 that inject secondary air from the outer periphery of the fuel nozzle 2, and a flame holder 5 that is arranged in an opening of the fuel nozzle 2. In the combustion burner 1, the flame holder 5 has a splitting shape that widens in the flow direction of the fuel gas. When seen in cross section along a direction in which the flame holder 5 widens, the cross section passing through the central axis of the fuel nozzle 2, a maximum distance h from the central axis of the fuel nozzle 2 to the widened end of the flame holder 5 and an inside diameter r of the opening 21 of the fuel nozzle 2 satisfy h/(r/2)

公开(公告)号：US20160010853A1

公开(公告)日：2016-01-14

申请号：US14810897

申请日：2015-07-28

申请人： MITSUBISHI HEAVY INDUSTRIES, LTD.

发明人： Keigo Matsumoto ,  Koutaro Fujimura ,  Kazuhiro Domoto ,  Toshimitsu Ichinose ,  Naofumi Abe ,  Jun Kasai

IPC分类号： F23D1/00

CPC分类号： F23D1/005 ,  F23C6/045 ,  F23C2201/20 ,  F23D1/00 ,  F23D2201/10 ,  F23D2201/20 ,  F23D2209/20

摘要： A combustion burner 1 includes a fuel nozzle 2 that injects fuel gas prepared by mixing solid fuel and primary air, secondary air nozzles 3, 4 that inject secondary air from the outer periphery of the fuel nozzle 2, and a flame holder 5 that is arranged in an opening of the fuel nozzle 2. In the combustion burner 1, the flame holder 5 has a splitting shape that widens in the flow direction of the fuel gas. When seen in cross section along a direction in which the flame holder 5 widens, the cross section passing through the central axis of the fuel nozzle 2, a maximum distance h from the central axis of the fuel nozzle 2 to the widened end of the flame holder 5 and an inside diameter r of the opening 21 of the fuel nozzle 2 satisfy h/(r/2)

摘要翻译： 燃烧器1包括喷射通过混合固体燃料和一次空气而制备的燃料气体的燃料喷嘴2，从燃料喷嘴2的外周喷射二次空气的二次空气喷嘴3,4和布置在燃料喷嘴2的外周的火焰保持器5 在燃料喷嘴2的开口中。在燃烧器1中，火焰保持器5具有在燃料气体的流动方向上变宽的分离形状。 当沿着火焰保持器5变宽的方向的横截面中观察时，穿过燃料喷嘴2的中心轴线的横截面为从燃料喷嘴2的中心轴线到火焰加宽端的最大距离h 燃料喷嘴2的开口21的内径r满足h /（r / 2）<0.6。