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Title:
COMBUSTION BURNER, BOILER PROVIDED WITH SAME, AND COMBUSTION METHOD
Document Type and Number:
WIPO Patent Application WO/2018/143036
Kind Code:
A1
Abstract:
The present invention enables reduction of the amount of NOx generation by promoting combustion of fixed carbon and discharge of combustible volatile matter included in fuel, while suppressing release of an unburnt part of fuel to a furnace. Provided is a combustion burner (100A) that is provided with: a fuel nozzle (110) that forms a fuel gas flow passage (111) through which a fuel gas is supplied to a furnace (11); a secondary air nozzle (120) through which secondary air higher in temperature than the fuel gas is distributed; a secondary air flow passage (121) that is formed between the secondary air nozzle (120) and the fuel nozzle (110); and a secondary air introduction flow passage (130) having a plurality of introduction parts (133, 137) that introduce at least part of the secondary air distributed through the secondary air flow passage (121) to the fuel gas flow passage (111), wherein the introduction parts (133, 137) are dispersed along a direction intersecting with a gas distribution direction along an axis (X1).

Inventors:
KASAI, Jun (C/O MITSUBISHI HITACHI POWER SYSTEMS LTD, 3-1, Minatomirai 3-chome, Nishi-ku, Yokohama-sh, Kanagawa 01, 〒2208401, JP)
MATSUMOTO, Keigo (C/O MITSUBISHI HEAVY INDUSTRIES LTD, 16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
TANAKA, Ryuichiro (C/O MITSUBISHI HITACHI POWER SYSTEMS LTD, 3-1, Minatomirai 3-chome, Nishi-ku, Yokohama-sh, Kanagawa 01, 〒2208401, JP)
TOMINAGA, Yukihiro (C/O MITSUBISHI HEAVY INDUSTRIES LTD, 16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
Application Number:
JP2018/002185
Publication Date:
August 09, 2018
Filing Date:
January 25, 2018
Export Citation:
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Assignee:
MITSUBISHI HITACHI POWER SYSTEMS, LTD. (3-1 Minatomirai 3-chome, Nishi-ku Yokohama-sh, Kanagawa 01, 〒2208401, JP)
International Classes:
F23D1/00; F23C99/00; F23L1/00; F23L9/00
Foreign References:
JP2005140480A2005-06-02
JP2003240227A2003-08-27
JP2001082706A2001-03-30
JP2016156530A2016-09-01
JP2002228107A2002-08-14
JP2012122720A2012-06-28
JP2016156529A2016-09-01
JP2007333232A2007-12-27
Attorney, Agent or Firm:
FUJITA, Takaharu (37F The Landmark Tower Yokohama, 2-2-1 Minatomirai, Nishi-ku, Yokohama-sh, Kanagawa 37, 〒2208137, JP)
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