WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

F23C　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)

F23C 1/00 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

F23C 3/00 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}

F23C 3/004 ・{the chamber being arranged for submerged combustion (F23C 3/002 takes precedence)}

F23C 3/006 ・{the chamber being arranged for cyclonic combustion (for waste F23G 5/32)}

F23C 3/008 ・・[N. for pulverulent fuel]

F23C 5/00 Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus (F23C 1/00, F23C 11/04 take precedence)

F23C 5/02 ・Structural details of mounting

F23C 5/06 ・・Provision for adjustment of burner position during operation

F23C 5/08 ・Disposition of burners

F23C 5/10 ・・to obtain a flame ring

F23C 5/12 ・・・for pulverulent fuel

F23C 5/14 ・・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

F23C 6/00 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

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)}

F23C 6/045 ・・{with staged combustion in a single enclosure}

F23C 6/047 ・・・{with fuel supply in stages}

F23C 7/00 Combustion apparatus characterised by arrangements for air supply (inlets for fluidisation air F23C 10/20)

F23C 7/002 ・{the air being submitted to a rotary or spinning motion (cyclonic combustion chamber F23C 3/006)}

F23C 7/004 ・・{using vanes}

F23C 7/006 ・・・{adjustable}

F23C 7/008 ・{Flow control devices (F23C 7/006 takes precedence)}

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

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

F23C 9/00 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

F23C 10/00 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

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

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

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

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

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)

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

F23C 10/28 ・・Control devices specially adapted for fluidised bed, combustion apparatus

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

F23C 13/00 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

F23C 13/08 ・characterised by the catalytic material

F23C 15/00 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)}

F23C 99/00 Subject-matter not provided for in other groups of this subclass

F23C 99/001 ・{Applying electric means or magnetism to combustion (for combustion engines F02B 51/04, F02M 27/04)}

F23C 99/003 ・{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)}

F23C 99/005 ・{Suspension-type burning, i.e. fuel particles carried along with a gas flow while burning (fluidized-bed combustion apparatus F23C 10/00)}

F23C 99/006 ・{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)}

F23C 99/008 ・{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

F23C 2201/00 Staged combustion

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

F23C 2201/30 ・Staged fuel supply

F23C 2201/301 ・・with different fuels in stages

F23C 2201/40 ・Intermediate treatments between stages

F23C 2201/401 ・・Cooling

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

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

F23C 2205/00 Pulsating combustion

F23C 2205/10 ・with pulsating fuel supply

F23C 2205/20 ・with pulsating oxidant supply

F23C 2206/00 Fluidised bed combustion

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

F23C 2700/00 Special arrangements for combustion apparatus using fluent fuel

F23C 2700/02 ・Combustion apparatus using liquid fuel

F23C 2700/023 ・・without pre-vaporising means

F23C 2700/026 ・・with pre-vaporising means

F23C 2700/04 ・Combustion apparatus using gaseous fuel

F23C 2700/043 ・・for surface combustion

F23C 2700/046 ・・generating heat by heating radiant bodies

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

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