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Title:
COMBUSTION BURNER AND BOILER
Document Type and Number:
WIPO Patent Application WO/2016/158473
Kind Code:
A1
Abstract:
In this combustion burner and boiler, interference of ignition in a flame stabilizer is suppressed and flame stabilization performance is improved by providing: a fuel nozzle (61) which ejects a fuel gas that is a mixture of pulverized coal and air; a combustion air nozzle (62) which ejects a fuel gas combustion air from outside of the fuel nozzle (61); a secondary air nozzle (63) which ejects secondary air from the outside of the combustion air nozzle (62); and a flame stabilizer (64) which comprises a first flame stabilizer main body (71) which is arranged at the leading end of the fuel nozzle (61) and separated by a prescribed space from the inner wall surface (61a) of the fuel nozzle (61) and which forms a ring shape having as the center (O) an axial line along the ejection direction of the fuel gas.

Inventors:
MATSUMOTO KEIGO (JP)
YUASA ATSUSHI (JP)
TOMINAGA YUKIHIRO (JP)
TAKAYAMA AKIMASA (JP)
DOMOTO KAZUHIRO (JP)
TSUKAHARA KEITA (JP)
Application Number:
PCT/JP2016/058609
Publication Date:
October 06, 2016
Filing Date:
March 17, 2016
Export Citation:
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Assignee:
MITSUBISHI HITACHI POWER SYS (JP)
International Classes:
F23C99/00; F23D1/00
Domestic Patent References:
WO2011077762A12011-06-30
Foreign References:
JP2014173777A2014-09-22
JPH10318504A1998-12-04
JPH09203505A1997-08-05
JPH11148610A1999-06-02
JPH10220707A1998-08-21
JP2001082706A2001-03-30
JPH11281010A1999-10-15
JP2009204256A2009-09-10
JPH08219415A1996-08-30
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
Patent business corporation Sakai international patent firm (JP)
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