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Outline
Indent Level
Color Curly Brackets (indicating CPC extensions to IPC) References Date Revised

CPC
COOPERATIVE PATENT CLASSIFICATION
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FEEDING FUEL TO COMBUSTION APPARATUS (fuel feeders specially adapted for fluidised-bed combustion apparatus F23C 10/22; regulating or controlling combustion F23N)
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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
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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
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F23K 3/10
.
Under-feed arrangements
F23K 3/12
. .
feeding by piston
F23K 3/14
. .
feeding by screw
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F23K 3/16
.
Over-feed arrangements
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. .
Spreader stokers
F23K 3/20
. . .
with moving hoppers
F23K 3/22
.
Controlling thickness of fuel bed
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Feeding or distributing other fuel to combustion apparatus
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F23K 5/002
.
{
Gaseous fuel
}
F23K 5/005
. .
{
from a central source to a plurality of burners
}
F23K 5/007
. .
{
Details
}
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F23K 5/02
.
Liquid fuel
. .
Feeding or distributing systems using pumps (F23K 5/06 takes precedence)
F23K 5/06
. .
from a central source to a plurality of burners
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F23K 5/08
. .
Preparation of fuel
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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)
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F23K 5/14
. .
Details thereof
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F23K 5/142
. . .
{
Fuel pumps (pumps in general F04)
}
F23K 5/145
. . . .
{
combined with fans
}
F23K 5/147
. . .
{
Valves
}
. . .
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
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F23K 2201/00
Pretreatment of solid fuel
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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
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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
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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
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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
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F23K 2203/20
.
Feeding/conveying devices
F23K 2203/201
. .
using pneumatic means
F23K 2203/202
. .
using screws
F23K 2203/203
. .
using pistons or rams
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F23K 2300/00
Pretreatment and supply of liquid fuel
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F23K 2301/10
.
Pretreatment
F23K 2301/101
. .
Application of magnetism or electricity
F23K 2301/103
. .
Mixing with other fluids
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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
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F23K 2400/00
Pretreatment and supply of gaseous fuel
F23K 2401/10
.
Pretreatment
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F23K 2401/20
.
Supply line arrangements
F23K 2401/201
. .
Control devices
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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
This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013