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Title:
COMBUSTION BURNER AND BOILER WITH SAME
Document Type and Number:
WIPO Patent Application WO/2018/150701
Kind Code:
A1
Abstract:
Provided is a combustion burner comprising: a fuel nozzle (110) forming a fuel gas flow passage (111) for supplying a fuel gas to a furnace; secondary air nozzles (120) forming secondary air flow passages (121) for supplying secondary air to the furnace from the outside of the fuel nozzle (110); and a pair of secondary air supply ports arranged above and below the secondary air nozzles (120) and supplying secondary air to the furnace (11). The fuel gas flow passage (111) and the secondary air flow passages (121) are flow passages having a rectangular shape in a cross-section taken perpendicular to an axis. The sum of the flow passage widths of the openings, open to the furnace, of secondary air flow passages (121) located to the left and right of the fuel gas flow passage (111) is greater than the sum of the flow passage widths of the openings, open to the furnace, of secondary air flow passages (121) located above and below the fuel gas flow passage (111).

Inventors:
TOMINAGA, Yukihiro (C/O MITSUBISHI HEAVY INDUSTRIES LTD, 16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
MATSUMOTO, Keigo (C/O MITSUBISHI HEAVY INDUSTRIES LTD, 16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
DOMOTO, Kazuhiro (C/O MITSUBISHI HITACHI POWER SYSTEMS LTD, 3-1, Minatomirai 3-chome, Nishi-ku, Yokohama-sh, Kanagawa 01, 〒2208401, JP)
TANAKA, Ryuichiro (C/O MITSUBISHI HITACHI POWER SYSTEMS LTD, 3-1, Minatomirai 3-chome, Nishi-ku, Yokohama-sh, Kanagawa 01, 〒2208401, JP)
SAEKI, Tomonori (C/O MITSUBISHI HITACHI POWER SYSTEMS LTD, 3-1, Minatomirai 3-chome, Nishi-ku, Yokohama-sh, Kanagawa 01, 〒2208401, JP)
ABE, Naofumi (C/O MITSUBISHI HITACHI POWER SYSTEMS LTD, 3-1, Minatomirai 3-chome, Nishi-ku, Yokohama-sh, Kanagawa 01, 〒2208401, JP)
KASAI, Jun (C/O MITSUBISHI HITACHI POWER SYSTEMS LTD, 3-1, Minatomirai 3-chome, Nishi-ku, Yokohama-sh, Kanagawa 01, 〒2208401, JP)
IMADA, Junji (C/O MITSUBISHI HEAVY INDUSTRIES LTD, 16-5, Konan 2-chome, Minato-k, Tokyo 15, 〒1088215, JP)
Application Number:
JP2017/044416
Publication Date:
August 23, 2018
Filing Date:
December 11, 2017
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; F23C5/08
Domestic Patent References:
WO2016158079A12016-10-06
WO2008038426A12008-04-03
WO2011074281A12011-06-23
Foreign References:
JPH08226615A1996-09-03
US1566177A1925-12-15
JP2015102298A2015-06-04
JP2013174370A2013-09-05
JP2009204256A2009-09-10
US5545031A1996-08-13
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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