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

CPC
COOPERATIVE PATENT CLASSIFICATION
Collapse
COMBUSTION APPARATUS USING FLUENT FUEL ( combustion apparatus for solid fuel only F23B; burners F23D; constructional details of combustion chambers not otherwise provided for F23M; combustion chambers for generating combustion products of high pressure or high velocity F23R )
Collapse
Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being fluent ( combustion apparatus characterised by the combination of two or more combustion chambers F23C 6/00 ; pilot flame igniters F23Q 9/00 )
F23C 1/02
.
lump or liquid fuel
F23C 1/04
.
lump or gaseous fuel
F23C 1/06
.
lump or pulverulent fuel
F23C 1/08
.
liquid or gaseous fuel
F23C 1/10
.
liquid or pulverulent fuel
F23C 1/12
.
gaseous or pulverulent fuel
Collapse
Combustion apparatus characterised by the shape of the combustion chamber
F23C 3/002
.
{
the chamber having an elongated tubular form, e.g. for a radiant tube
}
.
{
the chamber being arranged for submerged combustion ( F23C 3/002 takes precedence )
}
Collapse
F23C 3/006
.
{
the chamber being arranged for cyclonic combustion ( for waste F23G 5/32 )
}
F23C 3/008
. .
{
for pulverulent fuel
}
Collapse
Disposition of burners with respect to the combustion chamber or to one another ; Mounting of burners in combustion apparatus ( F23C 1/00 , F23C 15/00 take precedence )
Collapse
F23C 5/02
.
Structural details of mounting
F23C 5/06
. .
Provision for adjustment of burner position during operation
Collapse
F23C 5/08
.
Disposition of burners
Collapse
F23C 5/10
. .
to obtain a flame ring
F23C 5/12
. . .
for pulverulent fuel
. .
to obtain a single flame of concentrated or substantially planar form, e.g. pencil or sheet flame ( F23C 5/32 takes precedence )
F23C 5/24
. .
to obtain a loop flame
F23C 5/28
. .
to obtain flames in opposing directions, e.g. impacting flames
F23C 5/32
. .
to obtain rotating flames i.e. flames moving helically or spirally
Collapse
Combustion apparatus characterised by the combination of two or more combustion chambers
{
or combustion zones, e.g. for staged combustion
}
F23C 6/02
.
in parallel arrangement
Collapse
F23C 6/04
.
in series connection ( consuming smoke or fumes in separate combustion apparatus F23G 7/06 )
F23C 6/042
. .
{
with fuel supply in stages ( for staged combustion F23C 6/047 )
}
Collapse
F23C 6/045
. .
{
with staged combustion in a single enclosure
}
F23C 6/047
. . .
{
with fuel supply in stages
}
Collapse
Combustion apparatus characterised by arrangements for air supply ( inlets for fluidisation air F23C 10/20 )
Collapse
F23C 7/002
.
{
the air being submitted to a rotary or spinning motion ( cyclonic combustion chamber F23C 3/006 )
}
Collapse
F23C 7/004
. .
{
using vanes
}
F23C 7/006
. . .
{
adjustable
}
F23C 7/008
.
{
Flow control devices ( F23C 7/006 takes precedence )
}
Collapse
F23C 7/02
.
Disposition of air supply not passing through burner ( to obtain a cyclonic tapering flame when burning pulverulent fuel F23C 5/32 )
F23C 7/04
. .
to obtain maximum heat transfer to wall of combustion chamber
Collapse
F23C 7/06
. .
for heating the incoming air ( arrangements of regenerators and recuperators F23L 15/00 )
F23C 7/08
. . .
indirectly by a secondary fluid other than the combustion products
Collapse
Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber ( fluidised bed combustion apparatus with means for recirculation of particles entrained from the bed F23C 10/02 ; fluidised bed combustion apparatus with devices for removal and partial reintroduction of material from the bed F23C 10/26 )
F23C 9/003
.
{
for pulverulent fuel ( for fluidized bed F23C 10/02 )
}
F23C 9/006
.
{
the recirculation taking place in the combustion chamber
}
F23C 9/06
.
for completing combustion
F23C 9/08
.
for reducing temperature in combustion chamber e.g. for protecting walls of combustion chamber
Collapse
Fluidised bed combustion apparatus
F23C 10/002
.
{
for pulverulent solid fuel ( F23C 10/005 to F23C 10/32 take precedence )
}
F23C 10/005
.
{
comprising two or more beds
}
F23C 10/007
.
{
comprising a rotating bed
}
F23C 10/01
.
in a fluidised bed of catalytic particles
Collapse
F23C 10/02
.
with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
Collapse
F23C 10/04
. .
the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone
F23C 10/06
. . .
the circulating movement being promoted by inducing differing degrees of fluidisation in different parts of the bed
Collapse
F23C 10/08
. . .
characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases
F23C 10/10
. . . .
the separation apparatus being located outside the combustion chamber
Collapse
F23C 10/12
. .
the particles being circulated exclusively within the combustion zone
F23C 10/14
. . .
the circulating movement being promoted by inducing differing degrees of fluidisation in different parts of the bed
F23C 10/16
.
specially adapted for operation at superatmospheric pressures, e.g. by the arrangement of the combustion chamber and its auxiliary systems inside a pressure vessel
Collapse
F23C 10/18
.
Details ; Accessories
F23C 10/20
. .
Inlets for fluidisation air, e.g. grids ; Bottoms
F23C 10/22
. .
Fuel feeders specially adapted for fluidised bed combustiuon apparatus ( F23C 10/26 takes precedence )
Collapse
F23C 10/24
. .
Devices for removal of material from the bed ( devices for controlling the level of the bed or the amount of material in the bed F23C 10/30 )
F23C 10/26
. . .
combined with devices for partial reintroduction of material into the bed, e.g. after separation of agglomerated parts
Collapse
F23C 10/28
. .
Control devices specially adapted for fluidised bed, combustion apparatus
Collapse
F23C 10/30
. . .
for controlling the level of the bed or the amount of material in the bed
F23C 10/32
. . . .
by controlling the rate of recirculation of particles separated from the flue gases
Collapse
Apparatus in which combustion takes place in the presence of catalytic material ( in a fluidised bed of catalytic particles F23C 10/01 ; radiant gas burners using catalysis for flameless combustion F23D 14/18 )
F23C 13/02
.
characterised by arrangements for starting the operation, e.g. for heating the catalytic material to operating temperature
F23C 13/04
.
characterised by arrangements of two or more catalytic elements in series connection
F23C 13/06
.
in which non-catalytic combustion takes place in addition to catalytic combustion, e.g. downstream of a catalytic element
.
characterised by the catalytic material
Apparatus in which combustion takes place in pulses influenced by acoustic resonance in a gas mass
{
( for generating combustion products of high pressure or high velocity F23R 7/00 ; starting devices F23D 11/42 )
}
Collapse
Subject-matter not provided for in other groups of this subclass
.
{
Applying electric means or magnetism to combustion ( for combustion engines F02B 51/04 , F02M 27/04 )
}
.
{
Combustion process using sound or vibrations ( for combustion engines F02B 51/06 , F02M 27/08 ; liquid fuel burners using ultrasonic means for spraying the fuel F23D 11/34 )
}
.
{
Suspension-type burning, i.e. fuel particles carried along with a gas flow while burning ( fluidized-bed combustion apparatus F23C 10/00 )
}
.
{
Flameless combustion stabilised within a bed of porous heat-resistant material ( F23C 13/00 takes precedence; gas burners with radiant combustion on a porous surface F23D 14/16 )
}
.
{
Combustion methods wherein flame cooling techniques other than fuel or air staging or fume recirculation are used
}
F23C 2200/00
Combustion techniques for fluent fuel
Collapse
F23C 2201/00
Staged combustion
Collapse
F23C 2201/10
.
Furnace staging
F23C 2201/101
. .
in vertical direction, e.g. alternating lean and rich zones
F23C 2201/102
. .
in horizontal direction
F23C 2201/20
.
Burner staging
Collapse
F23C 2201/30
.
Staged fuel supply
F23C 2201/301
. .
with different fuels in stages
Collapse
F23C 2201/40
.
Intermediate treatments between stages
F23C 2201/401
. .
Cooling
Collapse
F23C 2202/00
Fluegas recirculation
F23C 2202/10
.
Premixing fluegas with fuel and combustion air
F23C 2202/20
.
Premixing fluegas with fuel
F23C 2202/30
.
Premixing fluegas with combustion air
F23C 2202/40
.
Inducing local whirls around flame
F23C 2202/50
.
Control of recirculation rate
Collapse
F23C 2203/00
Flame cooling methods otherwise than by staging or recirculation
F23C 2203/10
.
using heat exchanger
F23C 2203/20
.
using heat absorbing device in flame ( F23C 2203/10 takes precedence )
F23C 2203/30
.
Injection of tempering fluids
Collapse
F23C 2205/00
Pulsating combustion
F23C 2205/10
.
with pulsating fuel supply
F23C 2205/20
.
with pulsating oxidant supply
Collapse
F23C 2206/00
Fluidised bed combustion
Collapse
F23C 2206/10
.
Circulating fluidised bed
F23C 2206/101
. .
Entrained or fast fluidised bed
F23C 2206/102
. .
Control of recirculation rate
F23C 2206/103
. .
Cooling recirculating particles
Collapse
F23C 2700/00
Special arrangements for combustion apparatus using fluent fuel
Collapse
F23C 2700/02
.
Combustion apparatus using liquid fuel
F23C 2700/023
. .
without pre-vaporising means
F23C 2700/026
. .
with pre-vaporising means
Collapse
F23C 2700/04
.
Combustion apparatus using gaseous fuel
F23C 2700/043
. .
for surface combustion
F23C 2700/046
. .
generating heat by heating radiant bodies
Collapse
F23C 2700/06
.
Combustion apparatus using pulverized fuel
F23C 2700/063
. .
Arrangements for igniting, flame-guiding, air supply in
F23C 2700/066
. .
Other special arrangements
Collapse
F23C 2900/00
Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air ; Combustion processes therefor
F23C 2900/01001
.
Co-combustion of biomass with coal
F23C 2900/03001
.
Miniaturized combustion devices using fluid fuels
F23C 2900/03002
.
Combustion apparatus adapted for incorporating a fuel reforming device
F23C 2900/03003
.
Annular combustion chambers ( for gas turbines F23R 3/50 )
F23C 2900/03004
.
Tubular combustion chambers with swirling fuel/air flow
F23C 2900/03005
.
Burners with an internal combustion chamber, e.g. for obtaining an increased heat release, a high speed jet flame or being used for starting the combustion
F23C 2900/03006
.
Reverse flow combustion chambers
F23C 2900/03007
.
Sealed combustion chambers with balanced flue
F23C 2900/03008
.
Spherical or bulb-shaped combustion chambers
F23C 2900/03009
.
Elongated tube-shaped combustion chambers
F23C 2900/05081
.
Disposition of burners relative to each other creating specific heat patterns
F23C 2900/05082
.
Disposition of radial jet burners in relation to an impingement surface, e.g. a heat transfer surface, to obtain flame re-attachment combustion
F23C 2900/06041
.
Staged supply of oxidant
F23C 2900/06042
.
Annular arrangement of burners in a furnace, e.g. in a gas turbine, operated in alternate lean-rich mode
F23C 2900/06043
.
Burner staging, i.e. radially stratified flame core burners
F23C 2900/07001
.
Air swirling vanes incorporating fuel injectors
F23C 2900/07002
.
Premix burners with air inlet slots obtained between offset curved wall surfaces, e.g. double cone burners
F23C 2900/07021
.
Details of lances
F23C 2900/07022
.
Delaying secondary air introduction into the flame by using a shield or gas curtain
F23C 2900/09001
.
Cooling flue gas before returning them to flame or combustion chamber
F23C 2900/09002
.
Specific devices inducing or forcing flue gas recirculation
F23C 2900/10001
.
Use of special materials for the fluidized bed
F23C 2900/10002
.
Treatment devices for the fluidizing gas, e.g. cooling, filtering
F23C 2900/10003
.
Fluidized beds with expanding freeboard, i.e. cross-section increasing upwardly
F23C 2900/10004
.
Adding inert bed material to maintain proper fluidized bed inventory
F23C 2900/10005
.
Arrangement comprising two or more beds in separate enclosures
F23C 2900/10006
.
Pressurized fluidized bed combustors
F23C 2900/10007
.
Spouted fluidized bed combustors
F23C 2900/10008
.
Special arrangements of return flow seal valve in fluidized bed combustors
F23C 2900/13001
.
Details of catalytic combustors
F23C 2900/13002
.
Catalytic combustion followed by a homogeneous combustion phase or stabilizing a homogeneous combustion phase
F23C 2900/99001
.
Cold flame combustion or flameless oxidation processes
F23C 2900/99003
.
Combustion techniques using laser or light beams as ignition, stabilization or combustion enhancing means
F23C 2900/99004
.
Combustion process using petroleum coke or any other fuel with a very low content in volatile matters
F23C 2900/99005
.
Combustion techniques using plasma gas
F23C 2900/99006
.
Arrangements for starting combustion
F23C 2900/99008
.
Unmixed combustion, i.e. without direct mixing of oxygen gas and fuel, but using the oxygen from a metal oxide, e.g. FeO
F23C 2900/99009
.
Combustion process using vegetable derived fuels, e.g. from rapes
F23C 2900/9901
.
Combustion process using hydrogen, hydrogen peroxide water or brown gas as fuel
F23C 2900/99011
.
Combustion process using synthetic gas as a fuel, i.e. a mixture of CO and H2
This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013