F23C1/00	7	Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being either a fluid fuel or a solid fuel suspended in {a carrier gas or} air (combustion apparatus characterized by the combination of two or more combustion chambers F23C6/00; pilot flame igniters F23Q9/00)	F23C1/00	F23C1/00		477
F23C1/02	8	lump and liquid fuel	F23C1/02	F23C1/02		269
F23C1/04	8	lump and gaseous fuel	F23C1/04	F23C1/04		102
F23C1/06	8	lump and pulverulent fuel	F23C1/06	F23C1/06		61
F23C1/08	8	liquid and gaseous fuel	F23C1/08	F23C1/08		229
F23C1/10	8	liquid and pulverulent fuel	F23C1/10	F23C1/10		98
F23C1/12	8	gaseous and pulverulent fuel	F23C1/12	F23C1/12		233
F23C3/00	7	Combustion apparatus characterised by the shape of the combustion chamber	F23C3/00	F23C3/00		587
F23C3/002	8	{the chamber having an elongated tubular form, e.g. for a radiant tube}	F23C3/00	F23C3/00		761
F23C3/004	8	{the chamber being arranged for submerged combustion (F23C3/002 takes precedence)}	F23C3/00	F23C3/00		202
F23C3/006	8	{the chamber being arranged for cyclonic combustion (for waste F23G5/32)}	F23C3/00	F23C3/00		275
F23C3/008	9	{for pulverulent fuel}	F23C3/00	F23C3/00		652
F23C5/00	7	Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus (F23C1/00, F23C15/00 take precedence)	F23C5/00	F23C5/00		222
F23C5/02	8	Structural details of mounting	F23C5/02	F23C5/02		529
F23C5/06	9	Provision for adjustment of burner position during operation	F23C5/06	F23C5/06		215
F23C5/08	8	Disposition of burners	F23C5/08	F23C5/08		830
F23C5/10	9	{to obtain a flame ring}	F23C5/08	F23C5/10		20
F23C5/12	10	{for pulverulent fuel}	F23C5/08	F23C5/12		41
F23C5/14	9	to obtain a single flame of concentrated or substantially planar form, e.g. pencil or sheet flame (F23C5/32 takes precedence)	F23C5/14	F23C5/14		33
F23C5/24	9	to obtain a loop flame	F23C5/24	F23C5/24		57
F23C5/28	9	to obtain flames in opposing directions, e.g. impacting flames	F23C5/28	F23C5/28		121
F23C5/32	9	to obtain rotating flames, i.e. flames moving helically or spirally	F23C5/32	F23C5/32		347
F23C6/00	7	Combustion apparatus characterised by the combination of two or more combustion chambers {or combustion zones, e.g. for staged combustion}	F23C6/00	F23C6/00		112
F23C6/02	8	in parallel arrangement	F23C6/02	F23C6/02		150
F23C6/04	8	in series connection (consuming smoke or fumes in separate combustion apparatus F23G7/06)	F23C6/04	F23C6/04		567
F23C6/042	9	{with fuel supply in stages (for staged combustion F23C6/047)}	F23C6/04	F23C6/04		159
F23C6/045	9	{with staged combustion in a single enclosure}	F23C6/04	F23C6/04		552
F23C6/047	10	{with fuel supply in stages}	F23C6/04	F23C6/04		445
F23C7/00	7	Combustion apparatus characterised by arrangements for air supply (inlets for fluidisation air&#160;F23C10/20; baffles or shields with air supply passages&#160;F23M9/04)	F23C7/00	F23C7/00		796
F23C7/002	8	{the air being submitted to a rotary or spinning motion (cyclonic combustion chamber F23C3/006)}	F23C7/00	F23C7/00		614
F23C7/004	9	{using vanes}	F23C7/00	F23C7/00		541
F23C7/006	10	{adjustable}	F23C7/00	F23C7/00		170
F23C7/008	8	{Flow control devices (F23C7/006 takes precedence)}	F23C7/00	F23C7/00		665
F23C7/02	8	Disposition of air supply not passing through burner (to obtain a cyclonic tapering flame when burning pulverulent fuel F23C5/32)	F23C7/02	F23C7/02		673
F23C7/04	9	to obtain maximum heat transfer to wall of combustion chamber	F23C7/04	F23C7/04		19
F23C7/06	9	for heating the incoming air (arrangements of regenerators and recuperators F23L15/00)	F23C7/06	F23C7/06		326
F23C7/08	10	indirectly by a secondary fluid other than the combustion products	F23C7/08	F23C7/08		20
F23C9/00	7	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 F23C10/02; fluidised bed combustion apparatus with devices for removal and partial reintroduction of material from the bed F23C10/26)	F23C9/00	F23C9/00		939
F23C9/003	8	{for pulverulent fuel (for fluidized bed F23C10/02)}	F23C9/00	F23C9/00		327
F23C9/006	8	{the recirculation taking place in the combustion chamber}	F23C9/00	F23C9/00		668
F23C9/06	8	for completing combustion	F23C9/06	F23C9/06		536
F23C9/08	8	for reducing temperature in combustion chamber, e.g. for protecting walls of combustion chamber	F23C9/08	F23C9/08		478
F23C10/00	7	Fluidised bed combustion apparatus	F23C10/00	F23C10/00		383
F23C10/002	8	{for pulverulent solid fuel (F23C10/005&#160;-&#160;F23C10/32 take precedence)}	F23C10/00	F23C10/00		423
F23C10/005	8	{comprising two or more beds}	F23C10/00	F23C10/00		332
F23C10/007	8	{comprising a rotating bed}	F23C10/00	F23C10/00		33
F23C10/01	8	in a fluidised bed of catalytic particles	F23C10/01	F23C10/01		93
F23C10/02	8	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	F23C10/02	F23C10/02		154
F23C10/04	9	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	F23C10/04	F23C10/04		135
F23C10/06	10	the circulating movement being promoted by inducing differing degrees of fluidisation in different parts of the bed	F23C10/06	F23C10/06		42
F23C10/08	10	characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases	F23C10/08	F23C10/08		206
F23C10/10	11	the separation apparatus being located outside the combustion chamber	F23C10/10	F23C10/10		856
F23C10/12	9	the particles being circulated exclusively within the combustion zone	F23C10/12	F23C10/12		69
F23C10/14	10	the circulating movement being promoted by inducing differing degrees of fluidisation in different parts of the bed	F23C10/14	F23C10/14		65
F23C10/16	8	specially adapted for operation at superatmospheric pressures, e.g. by the arrangement of the combustion chamber and its auxiliary systems inside a pressure vessel	F23C10/16	F23C10/16		183
F23C10/18	8	Details; Accessories	F23C10/18	F23C10/18		1187
F23C10/20	9	Inlets for fluidisation air, e.g. grids; Bottoms	F23C10/20	F23C10/20		856
F23C10/22	9	Fuel feeders specially adapted for fluidised bed combustion apparatus (F23C10/26 takes precedence)	F23C10/22	F23C10/22		624
F23C10/24	9	Devices for removal of material from the bed (devices for controlling the level of the bed or the amount of material in the bed F23C10/30)	F23C10/24	F23C10/24		409
F23C10/26	10	combined with devices for partial reintroduction of material into the bed, e.g. after separation of agglomerated parts	F23C10/26	F23C10/26		432
F23C10/28	9	Control devices specially adapted for fluidised bed, combustion apparatus	F23C10/28	F23C10/28		670
F23C10/30	10	for controlling the level of the bed or the amount of material in the bed	F23C10/30	F23C10/30		130
F23C10/32	11	by controlling the rate of recirculation of particles separated from the flue gases	F23C10/32	F23C10/32		66
F23C13/00	7	Apparatus in which combustion takes place in the presence of catalytic material (in a fluidised bed of catalytic particles F23C10/01; radiant gas burners using catalysis for flameless combustion F23D14/18)	F23C13/00	F23C13/00		901
F23C13/02	8	characterised by arrangements for starting the operation, e.g. for heating the catalytic material to operating temperature	F23C13/02	F23C13/02		180
F23C13/04	8	characterised by arrangements of two or more catalytic elements in series connection	F23C13/04	F23C13/04		49
F23C13/06	8	in which non-catalytic combustion takes place in addition to catalytic combustion, e.g. downstream of a catalytic element	F23C13/06	F23C13/06		88
F23C13/08	8	characterised by the catalytic material	F23C13/08	F23C13/08		256
F23C15/00	7	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 F23R7/00; starting devices F23D11/42)}	F23C15/00	F23C15/00		826
F23C99/00	7	Subject-matter not provided for in other groups of this subclass	F23C99/00	F23C99/00		4361
F23C99/001	8	{Applying electric means or magnetism to combustion (for combustion engines F02B51/04, F02M27/04)}	F23C99/00	F23C99/00		380
F23C99/003	8	{Combustion process using sound or vibrations (for combustion engines F02B51/06, F02M27/08; liquid fuel burners using ultrasonic means for spraying the fuel F23D11/34)}	F23C99/00	F23C99/00		59
F23C99/005	8	{Suspension-type burning, i.e. fuel particles carried along with a gas flow while burning (fluidized-bed combustion apparatus F23C10/00)}	F23C99/00	F23C99/00		62
F23C99/006	8	{Flameless combustion stabilised within a bed of porous heat-resistant material (F23C13/00 takes precedence; gas burners with radiant combustion on a porous surface F23D14/16)}	F23C99/00	F23C99/00		211
F23C99/008	8	{Combustion methods wherein flame cooling techniques other than fuel or air staging or fume recirculation are used}	F23C99/00	F23C99/00		20
F23C2200/00	7	Combustion techniques for fluent fuel	CPCONLY	F23C2200/00		13
F23C2201/00	7	Staged combustion	CPCONLY	F23C2201/00		13
F23C2201/10	8	Furnace staging	CPCONLY	F23C2201/10		39
F23C2201/101	9	in vertical direction, e.g. alternating lean and rich zones	CPCONLY	F23C2201/101		255
F23C2201/102	9	in horizontal direction	CPCONLY	F23C2201/102		41
F23C2201/20	8	Burner staging	CPCONLY	F23C2201/20		326
F23C2201/30	8	Staged fuel supply	CPCONLY	F23C2201/30		164
F23C2201/301	9	with different fuels in stages	CPCONLY	F23C2201/301		125
F23C2201/40	8	Intermediate treatments between stages	CPCONLY	F23C2201/40		10
F23C2201/401	9	Cooling	CPCONLY	F23C2201/401		35
F23C2202/00	7	Fluegas recirculation	CPCONLY	F23C2202/00		39
F23C2202/10	8	Premixing fluegas with fuel and combustion air	CPCONLY	F23C2202/10		166
F23C2202/20	8	Premixing fluegas with fuel	CPCONLY	F23C2202/20		135
F23C2202/30	8	Premixing fluegas with combustion air	CPCONLY	F23C2202/30		374
F23C2202/40	8	Inducing local whirls around flame	CPCONLY	F23C2202/40		139
F23C2202/50	8	Control of recirculation rate	CPCONLY	F23C2202/50		169
F23C2203/00	7	Flame cooling methods otherwise than by staging or recirculation	CPCONLY	F23C2203/00		6
F23C2203/10	8	using heat exchanger	CPCONLY	F23C2203/10		33
F23C2203/20	8	using heat absorbing device in flame (F23C2203/10 takes precedence)	CPCONLY	F23C2203/20		54
F23C2203/30	8	Injection of tempering fluids	CPCONLY	F23C2203/30		43
F23C2205/00	7	Pulsating combustion	CPCONLY	F23C2205/00		24
F23C2205/10	8	with pulsating fuel supply	CPCONLY	F23C2205/10		78
F23C2205/20	8	with pulsating oxidant supply	CPCONLY	F23C2205/20		41
F23C2206/00	7	Fluidised bed combustion	CPCONLY	F23C2206/00		39
F23C2206/10	8	Circulating fluidised bed	CPCONLY	F23C2206/10		502
F23C2206/101	9	Entrained or fast fluidised bed	CPCONLY	F23C2206/101		192
F23C2206/102	9	Control of recirculation rate	CPCONLY	F23C2206/102		62
F23C2206/103	9	Cooling recirculating particles	CPCONLY	F23C2206/103		163
F23C2700/00	7	Special arrangements for combustion apparatus using fluent fuel	CPCONLY	F23C2700/00		2
F23C2700/02	8	Combustion apparatus using liquid fuel	CPCONLY	F23C2700/02		20
F23C2700/023	9	without pre-vaporising means	CPCONLY	F23C2700/023		1102
F23C2700/026	9	with pre-vaporising means	CPCONLY	F23C2700/026		907
F23C2700/04	8	Combustion apparatus using gaseous fuel	CPCONLY	F23C2700/04		331
F23C2700/043	9	for surface combustion	CPCONLY	F23C2700/043		328
F23C2700/046	9	generating heat by heating radiant bodies	CPCONLY	F23C2700/046		33
F23C2700/06	8	Combustion apparatus using pulverized fuel	CPCONLY	F23C2700/06		34
F23C2700/063	9	Arrangements for igniting, flame-guiding, air supply in	CPCONLY	F23C2700/063		498
F23C2700/066	9	Other special arrangements	CPCONLY	F23C2700/066		193
F23C2900/00	7	Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor	CPCONLY	F23C2900/00		8
F23C2900/01001	8	Co-combustion of biomass with coal	CPCONLY	F23C2900/01001		36
F23C2900/03001	8	Miniaturized combustion devices using fluid fuels	CPCONLY	F23C2900/03001		92
F23C2900/03002	8	Combustion apparatus adapted for incorporating a fuel reforming device	CPCONLY	F23C2900/03002		121
F23C2900/03003	8	Annular combustion chambers	CPCONLY	F23C2900/03003		10
F23C2900/03004	8	Tubular combustion chambers with swirling fuel/air flow	CPCONLY	F23C2900/03004		37
F23C2900/03005	8	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	CPCONLY	F23C2900/03005		178
F23C2900/03006	8	Reverse flow combustion chambers	CPCONLY	F23C2900/03006		62
F23C2900/03007	8	Sealed combustion chambers with balanced flue	CPCONLY	F23C2900/03007		14
F23C2900/03008	8	Spherical or bulb-shaped combustion chambers	CPCONLY	F23C2900/03008		9
F23C2900/03009	8	Elongated tube-shaped combustion chambers	CPCONLY	F23C2900/03009		54
F23C2900/05081	8	Disposition of burners relative to each other creating specific heat patterns	CPCONLY	F23C2900/05081		38
F23C2900/05082	8	Disposition of radial jet burners in relation to an impingement surface, e.g. a heat transfer surface, to obtain flame re-attachment combustion	CPCONLY	F23C2900/05082		4
F23C2900/06041	8	Staged supply of oxidant	CPCONLY	F23C2900/06041		338
F23C2900/06042	8	Annular arrangement of burners in a furnace, e.g. in a gas turbine, operated in alternate lean-rich mode	CPCONLY	F23C2900/06042		7
F23C2900/06043	8	Burner staging, i.e. radially stratified flame core burners	CPCONLY	F23C2900/06043		58
F23C2900/07001	8	Air swirling vanes incorporating fuel injectors	CPCONLY	F23C2900/07001		212
F23C2900/07002	8	Premix burners with air inlet slots obtained between offset curved wall surfaces, e.g. double cone burners	CPCONLY	F23C2900/07002		291
F23C2900/07021	8	Details of lances	CPCONLY	F23C2900/07021		137
F23C2900/07022	8	Delaying secondary air introduction into the flame by using a shield or gas curtain	CPCONLY	F23C2900/07022		47
F23C2900/09001	8	Cooling flue gas before returning them to flame or combustion chamber	CPCONLY	F23C2900/09001		28
F23C2900/09002	8	Specific devices inducing or forcing flue gas recirculation	CPCONLY	F23C2900/09002		182
F23C2900/10001	8	Use of special materials for the fluidized bed	CPCONLY	F23C2900/10001		33
F23C2900/10002	8	Treatment devices for the fluidizing gas, e.g. cooling, filtering	CPCONLY	F23C2900/10002		17
F23C2900/10003	8	Fluidized beds with expanding freeboard, i.e. cross-section increasing upwardly	CPCONLY	F23C2900/10003		2
F23C2900/10004	8	Adding inert bed material to maintain proper fluidized bed inventory	CPCONLY	F23C2900/10004		7
F23C2900/10005	8	Arrangement comprising two or more beds in separate enclosures	CPCONLY	F23C2900/10005		12
F23C2900/10006	8	Pressurized fluidized bed combustors	CPCONLY	F23C2900/10006		11
F23C2900/10007	8	Spouted fluidized bed combustors	CPCONLY	F23C2900/10007		14
F23C2900/10008	8	Special arrangements of return flow seal valve in fluidized bed combustors	CPCONLY	F23C2900/10008		16
F23C2900/13001	8	Details of catalytic combustors	CPCONLY	F23C2900/13001		86
F23C2900/13002	8	Catalytic combustion followed by a homogeneous combustion phase or stabilizing a homogeneous combustion phase	CPCONLY	F23C2900/13002		70
F23C2900/99001	8	Cold flame combustion or flameless oxidation processes	CPCONLY	F23C2900/99001		204
F23C2900/99003	8	Combustion techniques using laser or light beams as ignition, stabilization or combustion enhancing means	CPCONLY	F23C2900/99003		17
F23C2900/99004	8	Combustion process using petroleum coke or any other fuel with a very low content in volatile matters	CPCONLY	F23C2900/99004		54
F23C2900/99005	8	Combustion techniques using plasma gas	CPCONLY	F23C2900/99005		71
F23C2900/99006	8	Arrangements for starting combustion	CPCONLY	F23C2900/99006		140
F23C2900/99008	8	Unmixed combustion, i.e. without direct mixing of oxygen gas and fuel, but using the oxygen from a metal oxide, e.g. FeO	CPCONLY	F23C2900/99008		206
F23C2900/99009	8	Combustion process using vegetable derived fuels, e.g. from rapes	CPCONLY	F23C2900/99009		89
F23C2900/9901	8	Combustion process using hydrogen, hydrogen peroxide water or brown gas as fuel	CPCONLY	F23C2900/9901		804
F23C2900/99011	8	Combustion process using synthetic gas as a fuel, i.e. a mixture of CO and H2	CPCONLY	F23C2900/99011		59
