Title:
METHOD FOR OPERATING PULVERIZED COAL-FIRED BOILER FACILITY
Document Type and Number:
WIPO Patent Application WO/2013/008893
Kind Code:
A1
Abstract:
Provided is a method for operating a pulverized coal-fired boiler facility, wherein upgraded low-grade coal can be safely used as fuel and an existing facility needs little remodeling. The present invention relates to a method for operating a pulverized coal-fired boiler facility (100) that uses upgraded brown coal as fuel. Boiler exhaust gas taken out of an exhaust gas duct (31) is added to air from a primary air fan (10) to prepare mixed gas with an oxygen concentration of less than 12% in a volume ratio, the mixed gas is caused to separately flow to a carrier gas duct (33) that goes through a GAH (8) and a bypass carrier gas duct (34) that bypasses the GAH (8), and thereafter the mixed gas is supplied to a mill (21).
Inventors:
TADA TOSHIYA
Application Number:
PCT/JP2012/067862
Publication Date:
January 17, 2013
Filing Date:
July 12, 2012
Export Citation:
Assignee:
KOBE STEEL LTD (JP)
TADA TOSHIYA
TADA TOSHIYA
International Classes:
F23K3/02
Foreign References:
| JP2008145007A | 2008-06-26 | |||
| JP2010242999A | 2010-10-28 | |||
| JP2004347241A | 2004-12-09 | |||
| JPH1163471A | 1999-03-05 | |||
| JPH05272709A | 1993-10-19 | |||
| JPS62134416A | 1987-06-17 |
Other References:
See also references of EP 2733423A4
Attorney, Agent or Firm:
HAMADA Yuriko et al. (JP)
Yuriko Hamada (JP)
Yuriko Hamada (JP)
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Claims: