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1. US20140069307 - METHOD FOR OPERATING PULVERIZED-COAL-FIRED BOILER FACILITY

官庁 アメリカ合衆国
出願番号 14117716
出願日 12.07.2012
公開番号 20140069307
公開日 13.03.2014
公報種別 A1
IPC
F23D 1/00
F機械工学;照明;加熱;武器;爆破
23燃焼装置;燃焼方法
Dバーナ
1粉状燃料燃焼用バーナ
F23L 7/00
F機械工学;照明;加熱;武器;爆破
23燃焼装置;燃焼方法
L空気または不燃性液体またはガスの燃焼装置への供給一般;燃焼装置への空気供給または通風の制御に特に適合したバルブまたはダンパ;燃焼装置への誘引通風;煙突または通風軸の先端;煙道の末端
7火への空気以外の不燃性の液体またはガスの供給,例.酸素,蒸気
CPC
F23D 1/005
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
DBURNERS
1Burners for combustion of pulverulent fuel
005burning a mixture of pulverulent fuel delivered as a slurry, i.e. comprising a carrying liquid
F23L 7/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
LSUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL 
7Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
出願人 Tada Toshiya
Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
発明者 Tada Toshiya
優先権情報 2011154894 13.07.2011 JP
発明の名称
(EN) METHOD FOR OPERATING PULVERIZED-COAL-FIRED BOILER FACILITY
要約
(EN)

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).

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