DEVICE FOR BURNING GASEOUS FUEL Russian patent published in 2004 - IPC

FIELD: devices for burning gaseous fuels including fuels ballasted with exhaust gases, for example gases after gas turbine. SUBSTANCE: proposed device includes peripheral air passage with air swirler, swivel damper distributing air among passages and gas manifolds connected with gas dispensing tubes having gas exhaust holes. Gas dispensing tubes are located across air flow of central passage along trailing edges of swirler blades and gas exhaust holes are made along gas dispensing tubes on side opposite to incoming flow; at one end gas dispensing tubs are connected to first gas manifold and at other end they are connected to second gas manifold which toroidal in shape. Central air passage may be additionally provided with gas dispensing tubes smoothly distributed over circle and connected to second gas manifold; their free ends are blanked off; their length is calculated from condition of equality of areas of circular sectors between adjacent gas distributing tubes. Device may be provided with pilot burner having its own gas manifold, gas nozzle and inner air passage where central pipe is mounted; outlet of this pipe is form of hollow widening cone. EFFECT: low level of nitrogen oxide emissions irrespective of kind of fuel. 4 cl, 2 dwg