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1. AU2012281491 - Method for operating pulverized coal-fired boiler facility

官庁 オーストラリア
出願番号 2012281491
出願日 12.07.2012
公開番号 2012281491
公開日 28.11.2013
公報種別 B2
IPC
F23K 3/02
F機械工学;照明;加熱;武器;爆破
23燃焼装置;燃焼方法
K燃焼装置への燃料の供給
3塊状または粉状燃料の燃焼装置への供給または分配
02空気式供給装置,すなわち空気送風によるもの
CPC
F22B 1/18
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
22STEAM GENERATION
BMETHODS OF STEAM GENERATION; STEAM BOILERS
1Methods of steam generation characterised by form of heating method
02by exploitation of the heat content of hot heat carriers
18the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
F22B 35/002
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
22STEAM GENERATION
BMETHODS OF STEAM GENERATION; STEAM BOILERS
35Control systems for steam boilers
002Control by recirculating flue gases
F22B 37/008
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
22STEAM GENERATION
BMETHODS OF STEAM GENERATION; STEAM BOILERS
37Component parts or details of steam boilers
008Adaptations for flue gas purification in steam generators,
F23C 9/003
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  ; A CARRIER GAS OR; AIR 
9Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
003for pulverulent fuel
F23C 2202/30
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  ; A CARRIER GAS OR; AIR 
2202Fluegas recirculation
30Premixing fluegas with combustion air
F23C 2202/50
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  ; A CARRIER GAS OR; AIR 
2202Fluegas recirculation
50Control of recirculation rate
出願人 Kabushiki Kaisha Kobe Seiko Sho(Kobe Steel, Ltd.)
代理人 FB Rice Pty Ltd
優先権情報 2011-154894 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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