Mitsubishi Hitachi Power Systems, Ltd.

Ryuichiro Tanaka

Keigo Matsumoto

Kazuhiro Domoto

Naofumi Abe

Yukihiro Tominaga

Akimasa Takayama

Kenji Yamamoto

Kenji Kiyama

Akira Baba

Toshimitsu Ichinose

Jun Kasai

Koji Kuramashi

Koutaro Fujimura

Miki Shimogori

Toshihiko Mine

Noboru Kawamoto

Keita Tsukahara

Ryuhei Takashima

A combustion burner includes a fuel nozzle configured to blow in fuel gas of solid fuel and air, a combustion air nozzle configured to blow in air from the outside of the fuel nozzle, and at least one flame stabilizer arranged on the axial center side at a distal end of the fuel nozzle. The flame stabilizer is arranged at the distal end, and has a flame stabilizing member whose width increases in a direction toward the distal end, and a straightening vane having a plate shape and being arranged on an extension of the flame stabilizing member on the upstream side in a flow direction of the fuel gas. An abrasion-resistant member is arranged on a wide width surface of the flame stabilizer, and an abrasion-resistant member is arranged on at least a part of the straightening vane.

Combustion burner and method for maintaining combustion burner

A combustion burner includes a plurality of splitters (), (), () configured to divide a fuel gas flow by a widened portion where a width of the widened portion increases as the widened portion extends in the direction of the fuel gas flow. The splitters include: slitted splitters (), () configured to slits (SL) at a downstream end in the fuel gas flow; and non-slitted splitters () configured to adjacently to the slitted splitters (), (), each of the non-slitted splitters () configured to the widened portion at a downstream end in the fuel gas flow, and configured to a fixed width in a direction of the longitudinal axis.

Combustion burner and boiler equipped with the same

A burner includes: an inner gas nozzle which extends along an axis while surrounding the axis, and which is capable of supplying a furnace with an inner combustion oxygen containing gas; a fuel supply nozzle surrounding the inner gas nozzle as seen in a direction along the axis, the fuel supply nozzle being capable of supplying the furnace with a fluid mixture of a solid powder fuel and a carrier gas; an outer gas nozzle surrounding the fuel supply nozzle as seen in the direction along the axis, the outer gas nozzle being capable of supplying the furnace with an outer combustion oxygen containing gas; and a flow-velocity-ratio adjustment apparatus capable of adjusting a relative flow velocity ratio of a discharge flow velocity of the inner combustion oxygen containing gas to a discharge flow velocity of the outer combustion oxygen containing gas.

Burner, combustion device, boiler, and burner control method

A combustion burner including: a fuel nozzle () which ejects a fuel gas that is a mixture of fuel and air; a combustion air nozzle () which ejects air from an outer side of the fuel nozzle (); first members () which are arranged inside the fuel nozzle () and which each comprise a first inclined surface () inclined with respect to the flow of the fuel gas, and a first inclination end edge where the inclination of the first inclined surface () ends; and second members () which are arranged downstream of the first inclination end edges in the direction of fuel gas flow, and which each comprise a second inclined surface () inclined towards the first members () with respect to the fuel gas flow and a second inclination end edge where the inclination of the second inclined surface () ends.

Combustion burner and boiler

To provide: a fuel nozzle () that can inject fuel gas in which fuel and air are mixed; a flame stabilizer () provided on an axial center side near a tip end of the fuel nozzle (); and a casing member () that partitions an inner flow channel in which the flame stabilizer () is provided and an outer flow channel on an outer side of the inner flow channel, inside the fuel nozzle (), where the flow channel cross-sectional area of the inner flow channel partitioned by the casing member () expands in the flow direction of the fuel gas.

Combustion burner and boiler provided with same

Growing community of inventors

Yokohama, Japan

Ryuichiro Tanaka