公开(公告)号：EP3276260A4

公开(公告)日：2018-06-20

申请号：EP16807320

申请日：2016-05-30

申请人： MITSUBISHI HITACHI POWER SYS

发明人： KIYAMA KENJI ,  ICHINOSE TOSHIMITSU ,  SHIMOGORI MIKI ,  MINE TOSHIHIKO ,  YAMAMOTO KENJI ,  TANAKA RYUICHIRO ,  BABA AKIRA ,  KURAMASHI KOJI ,  FUJIMURA KOUTARO ,  MATSUMOTO KEIGO

IPC分类号： F23D1/00

CPC分类号： F23D1/005 ,  F23C7/008 ,  F23D1/00 ,  F23D2201/10 ,  F23D2201/20 ,  F23D2208/00 ,  F23D2209/20 ,  F23D2900/00016 ,  F23D2900/14481 ,  F23L7/007 ,  F23N1/022

摘要： A burner equipped with: an inside gas nozzle extending along an axis line while surrounding that axis line and capable of supplying to a furnace an oxygen-containing gas for inside combustion; a fuel supply nozzle that, when viewed in the direction along the axis line, surrounds the inside gas nozzle, and is capable of supplying to the furnace a fluid mixture of a solid powder fuel and a carrier gas; an outside gas nozzle that, when viewed in the direction along the axis line, surrounds the fuel supply nozzle, and is capable of supplying to the furnace an oxygen-containing gas for outside combustion; and a flow speed ratio adjustment mechanism capable of adjusting the relative flow speed ratio of the spray flow speed of the oxygen-containing gas for inside combustion and the spray flow speed of the oxygen-containing gas for outside combustion. Downstream from the outlet of the fuel supply nozzle, flame-holding regions are formed in the sprayed flow of the fluid mixture, these regions being formed respectively on the side of the sprayed flow of the oxygen-containing gas for inside combustion and on the side of the sprayed flow of the oxygen-containing gas for outside combustion.