Title:
COMBUSTION BURNER AND BOILER
Document Type and Number:
Japanese Patent JP2016118329
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To suppress corrosion of a furnace wall and further to suppress attachment of molten ash to the furnace wall with a simple constitution.SOLUTION: A combustion burner in which a fuel gas obtained by mixing a solid fuel and air is jetted into a furnace from a jetting port, includes: a fuel supply pipe disposed along a vertical direction and having a curved portion for curving a fuel gas flow in a horizontal direction; an upstream side plate disposed at a downstream side in the fuel gas flowing direction with respect to the curved portion and dividing a flow channel of a fuel supply pipe into two of an upper part and a lower part; and a downstream side plate disposed at a downstream side in the fuel gas flowing direction with respect to the upstream side plate, and dividing the flow channel into two of a furnace wall side close to a wall of the furnace and a furnace inner side close to the inside of the furnace. When the flow channel is observed from the jetting port, a cross-sectional area orthogonal to the fuel gas flowing direction of the flow channel is divided into four by a downstream end portion of the upstream side plate and an upstream end portion of the downstream side plate, and a ratio of a cross-sectional area of an upper and furnace wall side to the sum of the cross-sectional areas of the upper and lower furnace wall sides, is smaller than a ratio of a cross-sectional area of an upper and furnace inner side to the sum of the cross-sectional area of the upper and lower furnace inner sides.SELECTED DRAWING: Figure 3
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Inventors:
TOMINAGA SACHIHIRO
IMADA JUNJI
TAKEI KOICHI
IMADA JUNJI
TAKEI KOICHI
Application Number:
JP2014258076A
Publication Date:
June 30, 2016
Filing Date:
December 19, 2014
Export Citation:
Assignee:
MITSUBISHI HITACHI POWER SYS
International Classes:
F23K3/02; F23D1/00
Domestic Patent References:
| JPH1122915A | 1999-01-26 | |||
| JPS58110908A | 1983-07-01 | |||
| JPH11287433A | 1999-10-19 | |||
| JPS6229508A | 1987-02-07 | |||
| JP2005156015A | 2005-06-16 | |||
| JPH10274403A | 1998-10-13 |
Foreign References:
| US4274343A | 1981-06-23 |
Attorney, Agent or Firm:
Hiroaki Sakai
Jun Takamura
Jun Takamura
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