WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

F23K　FEEDING FUEL TO COMBUSTION APPARATUS (fuel feeders specially adapted for fluidised-bed combustion apparatus F23C 10/22; regulating or controlling combustion F23N)

F23K 1/00 Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus (filtration B01D; mixing B01F; pulverising B02C; drying F26B)

F23K 1/02 ・Mixing solid fuel with a liquid, e.g. preparing slurries

F23K 1/04 ・Heating fuel prior to delivery to combustion apparatus

F23K 3/00 Feeding or distributing of lump or pulverulent fuel to combustion apparatus (conveying in general B65G)

F23K 3/02 ・Pneumatic feeding arrangements, i.e. by air blast

F23K 3/04 ・for locomotive boiler furnaces

F23K 3/06 ・for shaft-type furnaces

F23K 3/08 ・for furnaces having movable grate bars

F23K 3/10 ・Under-feed arrangements

F23K 3/12 ・・feeding by piston

F23K 3/14 ・・feeding by screw

F23K 3/16 ・Over-feed arrangements

F23K 3/18 ・・Spreader stokers

F23K 3/20 ・・・with moving hoppers

F23K 3/22 ・Controlling thickness of fuel bed

F23K 5/00 Feeding or distributing other fuel to combustion apparatus

F23K 5/002 ・{Gaseous fuel}

F23K 5/005 ・・{from a central source to a plurality of burners}

F23K 5/007 ・・{Details}

F23K 5/02 ・Liquid fuel

F23K 5/04 ・・Feeding or distributing systems using pumps (F23K 5/06 takes precedence)

F23K 5/06 ・・from a central source to a plurality of burners

F23K 5/08 ・・Preparation of fuel

F23K 5/10 ・・・Mixing with other fluids

F23K 5/12 ・・・・Preparing emulsions (spraying an emulsion of water and fuel into the combustion space of burners F23D 11/16)

F23K 5/14 ・・Details thereof

F23K 5/142 ・・・{Fuel pumps (pumps in general F04)}

F23K 5/145 ・・・・{combined with fans}

F23K 5/147 ・・・{Valves}

F23K 5/16 ・・・Safety devices (F23K 5/18 takes precedence; safety arrangements for combustion chambers F23M 11/00)

F23K 5/18 ・・・Cleaning or purging devices, e.g. filters

F23K 5/20 ・・・Preheating devices (in burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space F23D 11/44)

F23K 5/22 ・・・Vaporising devices (in burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space F23D 11/44)

F23K 2200/00 Pretreatment and supply of solid fuel

F23K 2201/00 Pretreatment of solid fuel

F23K 2201/10 ・Pulverizing

F23K 2201/1003 ・・Processes to make pulverulent fuels

F23K 2201/1006 ・・Mills adapted for use with furnaces

F23K 2201/101 ・・to a specific particle size

F23K 2201/103 ・・with hot gas supply

F23K 2201/20 ・Drying

F23K 2201/30 ・Separating

F23K 2201/50 ・Blending

F23K 2201/501 ・・with other fuels or combustible waste

F23K 2201/503 ・・with non-combustible liquids to prepare slurries

F23K 2201/505 ・・with additives

F23K 2203/00 Feeding arrangements

F23K 2203/002 ・Feeding devices for steam boilers, e.g. in locomotives

F23K 2203/004 ・Feeding devices with reciprocating members

F23K 2203/006 ・Fuel distribution and transport systems for pulverulent fuel

F23K 2203/008 ・Feeding devices for pulverulent fuel

F23K 2203/10 ・Supply line fittings

F23K 2203/101 ・・Wear protection devices

F23K 2203/102 ・・Flashback safety, e.g. inertizing devices

F23K 2203/103 ・・Storage devices

F23K 2203/104 ・・Metering devices

F23K 2203/105 ・・Flow splitting devices to feed a plurality of burners

F23K 2203/20 ・Feeding/conveying devices

F23K 2203/201 ・・using pneumatic means

F23K 2203/202 ・・using screws

F23K 2203/203 ・・using pistons or rams

F23K 2300/00 Pretreatment and supply of liquid fuel

F23K 2301/10 ・Pretreatment

F23K 2301/101 ・・Application of magnetism or electricity

F23K 2301/103 ・・Mixing with other fluids

F23K 2301/20 ・Supply line arrangements

F23K 2301/201 ・・Pumps

F23K 2301/202 ・・Filtering

F23K 2301/203 ・・Purging

F23K 2301/204 ・・Preheating

F23K 2301/205 ・・Vaporising

F23K 2301/206 ・・Control devices

F23K 2400/00 Pretreatment and supply of gaseous fuel

F23K 2401/10 ・Pretreatment

F23K 2401/20 ・Supply line arrangements

F23K 2401/201 ・・Control devices

F23K 2900/00 Special features of, or arrangements for fuel supplies

F23K 2900/00001 ・Treating the fuel, either liquid or gaseous, with sound waves to enhance fuel properties

F23K 2900/00002 ・Treating the fuel, either liquid or gaseous, with far-infrared radiations (FIR) to enhance fuel properties

F23K 2900/01001 ・Cleaning solid fuel before combustion to achieve reduced emissions

F23K 2900/01002 ・Treating solid fuel with electromagnetic fields before combustion

F23K 2900/01003 ・Pulverizing solid fuel in vacuum or a reduced pressure environment

F23K 2900/01041 ・Heating by using exhaust gas heat

F23K 2900/03001 ・Airlock sections in solid fuel supply lines

F23K 2900/05001 ・Control or safety devices in gaseous or liquid fuel supply lines

F23K 2900/05002 ・Valves for gaseous fuel supply lines

F23K 2900/05003 ・Non-continuous fluid fuel supply

F23K 2900/05004 ・Mixing two or more fluid fuels

F23K 2900/05081 ・Treating the fuel with catalyst to enhance combustion

F23K 2900/05082 ・Removing gaseous substances from liquid fuel line, e.g. oxygen

F23K 2900/05083 ・Separating watery fractions from liquid fuel

F23K 2900/05084 ・Creating a combustible foam of liquid fuels and air

F23K 2900/05141 ・Control or safety devices in liquid fuel supply line

F23K 2900/05142 ・Special materials for liquid fuel supply lines