固体燃料バーナ

Japanese Patent JP5832653

B2

Provided is a solid-fuel burner comprising: a venturi 7 having a constricting portion where the transverse cross section of a fuel passage is reduced in a fuel nozzle 8 for supplying a solid fuel; and a fuel concentrator 6 for diverting the flow in the nozzle 8 outward in the wake side of the venturi 7, and the nozzle 8 is formed so that (a) the aperture in the vicinity of an opening portion 32 of a boiler furnace wall surface 18 has a flat shape, (b) cross-sectional shape thereof orthogonal to a nozzle center axis C on the outer peripheral wall of the nozzle 8 is circular in a transverse cross section up to the constricting portion of the venturi 7, (c) a portion that has a gradually increasing degree of flatness is provided between the constricting portion and the opening portion 32, and (d) the flat shape in the opening portion 32 is where the degree of flatness reaches a maximum. There is obtained a solid-fuel burner in which a fuel concentration sufficient to ignite the fuel and stabilize the flames thereof is achieved in the outlet of the nozzle 8 while uniformity of fuel concentration in the circumferential direction is maintained, and a low-NOx concentration can be achieved in the fuel exhaust gas.

Toshihiko Mine
Kiyama Kenji
Shimogori Miki
Satoshi Tadakuma
Wakamatsu Hitoshi
Noriyuki Otanizu
Koji Kuramasu
Kenichi Ochi
Yusuke Ochi
Oka Saki Western

JP2014530535A

December 16, 2015

August 09, 2013

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Mitsubishi Hitachi Power Systems Co., Ltd.

F23D1/00; F23C99/00

JP4896143B2	2012-03-14
JP2007057228A	2007-03-08
JP2011202841A	2011-10-13
JPS59163709U	1984-11-02

WO2009125566A1

2009-10-15

Kamei Takeyuki
Takayoshi Matsunaga
Iizuka Muko
Go Sasaki

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