F23J1/00	7	Removing ash, clinker, or slag from combustion chambers ({removing flyash from flue gas F23J15/022;} devices for removal of material from the bed of fluidised bed combustion apparatus F23C10/24)	F23J1/00	F23J1/00		3227
F23J1/02	8	Apparatus for removing ash, clinker, or slag from ash-pits, e.g. by employing trucks or conveyors, by employing suction devices	F23J1/02	F23J1/02		1044
F23J1/04	8	Hand tools, e.g. rakes, prickers, tongs	F23J1/04	F23J1/04		163
F23J1/06	8	Mechanically-operated devices, e.g. clinker pushers (forming part of the grate F23H)	F23J1/06	F23J1/06		2209
F23J1/08	8	Liquid slag removal	F23J1/08	F23J1/08		225
F23J3/00	7	Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers	F23J3/00	F23J3/00		1218
F23J3/02	8	Cleaning furnace tubes; Cleaning flues or chimneys	F23J3/02	F23J3/02		1441
F23J3/023	9	{cleaning the fireside of watertubes in boilers}	F23J3/02	F23J3/02		317
F23J3/026	9	{cleaning the chimneys}	F23J3/02	F23J3/02		778
F23J3/04	8	Traps	F23J3/04	F23J3/04		141
F23J3/06	8	Systems for accumulating residues from different parts of furnace plant	F23J3/06	F23J3/06		245
F23J7/00	7	Arrangement of devices for supplying chemicals to fire	F23J7/00	F23J7/00		1091
F23J9/00	7	Preventing premature solidification of molten combustion residues	F23J9/00	F23J9/00		118
F23J11/00	7	Devices for conducting smoke or fumes, e.g. flues (chimney stacks E04H12/28; removing cooking fumes from domestic stoves or ranges F24C15/20{; fume conduits of furnaces, kilns, ovens, or retorts F27D17/302})	F23J11/00	F23J11/00		1992
F23J11/02	8	for conducting smoke or fumes originating from various locations to the outside, e.g. in locomotive sheds, in garages	F23J11/02	F23J11/02		384
F23J11/04	8	in locomotives; in road vehicles; in ships	F23J11/04	F23J11/04		116
F23J11/06	9	for conducting smoke horizontally	F23J11/06	F23J11/06		16
F23J11/08	8	for portable apparatus	F23J11/08	F23J11/08		42
F23J11/10	8	for tents; for log huts; for other inflammable structures	F23J11/10	F23J11/10		9
F23J11/12	8	Smoke conduit systems for factories or large buildings	F23J11/12	F23J11/12		137
F23J13/00	7	Fittings for chimneys or flues&#160; (side-supporting means for chimney stacks E04H12/20; ladders permanently attached to chimneys E06C9/00; draught-inducing apparatus associated with chimneys or flues F23L17/00; tops for chimneys, terminals for flues F23L17/02)	F23J13/00	F23J13/00		1254
F23J13/02	8	Linings; Jackets; Casings	F23J13/02	F23J13/02		750
F23J13/025	9	{composed of concentric elements, e.g. double walled (terminals for balanced flue arrangements F23L17/04)}	F23J13/02	F23J13/02		617
F23J13/04	8	Joints; Connections	F23J13/04	F23J13/04		1408
F23J13/06	8	Mouths; Inlet holes	F23J13/06	F23J13/06		114
F23J13/08	8	Doors or covers specially adapted for smoke-boxes, flues, or chimneys	F23J13/08	F23J13/08		909
F23J15/00	7	Arrangements of devices for treating smoke or fumes	F23J15/00	F23J15/00		918
F23J15/003	8	{for supplying chemicals to fumes, e.g. using injection devices}	F23J15/00	F23J15/00		1414
F23J15/006	8	{Layout of treatment plant}	F23J15/00	F23J15/00		2099
F23J15/02	8	of purifiers, e.g. for removing noxious material (traps for solid residues F23J3/04)	F23J15/02	F23J15/02		3893
F23J15/022	9	{for removing solid particulate material from the gasflow}	F23J15/02	F23J15/02		2916
F23J15/025	10	{using filters}	F23J15/02	F23J15/02		4089
F23J15/027	10	{using cyclone separators}	F23J15/02	F23J15/02		1024
F23J15/04	9	using washing fluids {(scrubbers for removing solids only F23J15/022)}	F23J15/04	F23J15/04		3750
F23J15/06	8	of coolers	F23J15/06	F23J15/06		7694
F23J15/08	8	of heaters	F23J15/08	F23J15/08		1127
F23J99/00	7	Subject matter not provided for in other groups of this subclass	F23J99/00	F23J99/00		35
F23J2211/00	7	Flue gas duct systems	CPCONLY	F23J2211/00		14
F23J2211/10	8	Balanced flues (combining air supply and flue gas exhaust)	CPCONLY	F23J2211/10		65
F23J2211/101	9	with coaxial duct arrangement	CPCONLY	F23J2211/101		316
F23J2211/20	8	Common flues for several combustion devices	CPCONLY	F23J2211/20		89
F23J2211/30	8	Chimney or flue associated with building ventilation system	CPCONLY	F23J2211/30		63
F23J2211/40	8	Chimney with internal flue pipe system	CPCONLY	F23J2211/40		37
F23J2213/00	7	Chimneys or flues	CPCONLY	F23J2213/00		228
F23J2213/10	8	Linings	CPCONLY	F23J2213/10		48
F23J2213/101	9	Fastening means therefor	CPCONLY	F23J2213/101		133
F23J2213/20	8	Joints; Connections	CPCONLY	F23J2213/20		154
F23J2213/201	9	between stack and branch pipes	CPCONLY	F23J2213/201		90
F23J2213/202	9	between duct or stack sections	CPCONLY	F23J2213/202		565
F23J2213/203	9	between stack/duct and combustion apparatus	CPCONLY	F23J2213/203		292
F23J2213/204	9	Sealing arrangements	CPCONLY	F23J2213/204		218
F23J2213/30	8	Specific materials	CPCONLY	F23J2213/30		51
F23J2213/301	9	flexible	CPCONLY	F23J2213/301		52
F23J2213/302	9	plastic	CPCONLY	F23J2213/302		111
F23J2213/303	9	metallic	CPCONLY	F23J2213/303		90
F23J2213/304	9	ceramic	CPCONLY	F23J2213/304		68
F23J2213/305	9	glass	CPCONLY	F23J2213/305		16
F23J2213/40	8	Heat insulation fittings	CPCONLY	F23J2213/40		132
F23J2213/50	8	Top cover	CPCONLY	F23J2213/50		336
F23J2213/60	8	Service arrangements	CPCONLY	F23J2213/60		119
F23J2213/70	8	Safety arrangements	CPCONLY	F23J2213/70		139
F23J2215/00	7	Preventing emissions	CPCONLY	F23J2215/00		54
F23J2215/10	8	Nitrogen; Compounds thereof	CPCONLY	F23J2215/10		1240
F23J2215/101	9	Nitrous oxide (N2O)	CPCONLY	F23J2215/101		292
F23J2215/20	8	Sulfur; Compounds thereof	CPCONLY	F23J2215/20		1521
F23J2215/30	8	Halogen; Compounds thereof	CPCONLY	F23J2215/30		224
F23J2215/301	9	Dioxins; Furans	CPCONLY	F23J2215/301		275
F23J2215/40	8	Carbon monoxide	CPCONLY	F23J2215/40		144
F23J2215/50	8	Carbon dioxide	CPCONLY	F23J2215/50		581
F23J2215/60	8	Heavy metals; Compounds thereof	CPCONLY	F23J2215/60		344
F23J2217/00	7	Intercepting solids	CPCONLY	F23J2217/00		49
F23J2217/10	8	by filters	CPCONLY	F23J2217/10		990
F23J2217/101	9	Baghouse type	CPCONLY	F23J2217/101		434
F23J2217/102	9	electrostatic	CPCONLY	F23J2217/102		508
F23J2217/103	9	ultrafine [HEPA]	CPCONLY	F23J2217/103		53
F23J2217/104	9	High temperature resistant (ceramic) type	CPCONLY	F23J2217/104		218
F23J2217/105	9	Granular bed	CPCONLY	F23J2217/105		77
F23J2217/20	8	by baffles	CPCONLY	F23J2217/20		160
F23J2217/30	8	by screens	CPCONLY	F23J2217/30		49
F23J2217/40	8	by cyclones	CPCONLY	F23J2217/40		445
F23J2217/50	8	by cleaning fluids (washers or scrubbers)	CPCONLY	F23J2217/50		946
F23J2217/60	8	using settling/precipitation chambers	CPCONLY	F23J2217/60		160
F23J2219/00	7	Treatment devices	CPCONLY	F23J2219/00		25
F23J2219/10	8	Catalytic reduction devices	CPCONLY	F23J2219/10		780
F23J2219/20	8	Non-catalytic reduction devices	CPCONLY	F23J2219/20		212
F23J2219/201	9	Reducing species generators, e.g. plasma, corona	CPCONLY	F23J2219/201		50
F23J2219/30	8	Sorption devices using carbon, e.g. coke	CPCONLY	F23J2219/30		403
F23J2219/40	8	Sorption with wet devices, e.g. scrubbers	CPCONLY	F23J2219/40		685
F23J2219/50	8	Sorption with semi-dry devices, e.g. with slurries	CPCONLY	F23J2219/50		67
F23J2219/60	8	Sorption with dry devices, e.g. beds	CPCONLY	F23J2219/60		305
F23J2219/70	8	Condensing contaminants with coolers	CPCONLY	F23J2219/70		328
F23J2219/80	8	Quenching	CPCONLY	F23J2219/80		143
F23J2700/00	7	Ash removal, handling and treatment means; Ash and slag handling in pulverulent fuel furnaces; Ash removal means for incinerators	CPCONLY	F23J2700/00		26
F23J2700/001	8	Ash removal, handling and treatment means	CPCONLY	F23J2700/001		1236
F23J2700/002	8	Ash and slag handling in pulverulent fuel furnaces	CPCONLY	F23J2700/002		383
F23J2700/003	8	Ash removal means for incinerators	CPCONLY	F23J2700/003		434
F23J2900/00	7	Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes	CPCONLY	F23J2900/00		74
F23J2900/01001	8	Sorting and classifying ashes or fly-ashes from the combustion chamber before further treatment	CPCONLY	F23J2900/01001		70
F23J2900/01002	8	Cooling of ashes from the combustion chamber by indirect heat exchangers	CPCONLY	F23J2900/01002		73
F23J2900/01003	8	Ash crushing means associated with ash removal means	CPCONLY	F23J2900/01003		92
F23J2900/01004	8	Separating water from ash	CPCONLY	F23J2900/01004		20
F23J2900/01005	8	Mixing water to ash	CPCONLY	F23J2900/01005		51
F23J2900/01006	8	Airlock sealing associated with ash removal means	CPCONLY	F23J2900/01006		22
F23J2900/01007	8	Thermal treatments of ash, e.g. temper or shock-cooling for granulation	CPCONLY	F23J2900/01007		52
F23J2900/01009	8	Controls related to ash or slag extraction	CPCONLY	F23J2900/01009		71
F23J2900/01021	8	Removing ashes from the ash pit using reciprocating means, e.g. pushers	CPCONLY	F23J2900/01021		43
F23J2900/11001	8	Conducting systems with a gas flow bypass from main flue to an auxiliary flue	CPCONLY	F23J2900/11001		27
F23J2900/11002	8	Modelling systems adapted for designing arrangements for conducting or purifying combustion fumes, e.g. flues	CPCONLY	F23J2900/11002		7
F23J2900/13001	8	Preventing or reducing corrosion in chimneys	CPCONLY	F23J2900/13001		42
F23J2900/13002	8	Initial heating of the flue before starting combustion	CPCONLY	F23J2900/13002		5
F23J2900/13003	8	Means for reducing the noise in smoke conducing ducts or systems	CPCONLY	F23J2900/13003		188
F23J2900/13004	8	Water draining devices associated with flues	CPCONLY	F23J2900/13004		240
F23J2900/13005	8	Protections for chimneys or flue tops against external factors, e.g. birds	CPCONLY	F23J2900/13005		97
F23J2900/13006	8	Devices for heating the chimney top to avoid ice formation	CPCONLY	F23J2900/13006		12
F23J2900/13021	8	Means for supporting the lining of conducting means, e.g. ducts or chimneys	CPCONLY	F23J2900/13021		56
F23J2900/13022	8	Manufacturing processes for the lining of conducting means, e.g. by extrusion	CPCONLY	F23J2900/13022		19
F23J2900/13023	8	Ducts with non-circular cross-section	CPCONLY	F23J2900/13023		30
F23J2900/15001	8	Irradiating fumes with electron or light beams, e.g. UV, for oxidizing or dissociating SOx and NOx	CPCONLY	F23J2900/15001		12
F23J2900/15002	8	Cleaning fumes by letting them to pass a molten metal bath	CPCONLY	F23J2900/15002		3
F23J2900/15003	8	Supplying fumes with ozone	CPCONLY	F23J2900/15003		18
F23J2900/15004	8	Preventing plume emission at chimney outlet	CPCONLY	F23J2900/15004		101
F23J2900/15021	8	Preventing emission of hexavalent chromium at the chimney outlet	CPCONLY	F23J2900/15021		4
F23J2900/15022	8	Electrochemical cell filters	CPCONLY	F23J2900/15022		5
F23J2900/15023	8	Magnetic filters	CPCONLY	F23J2900/15023		9
F23J2900/15024	8	Photocatalytic filters	CPCONLY	F23J2900/15024		5
F23J2900/15025	8	Cyclone walls forming heat exchangers	CPCONLY	F23J2900/15025		11
F23J2900/15026	8	Cyclone separators with horizontal axis	CPCONLY	F23J2900/15026		29
F23J2900/15027	8	Preventing emission of CO2 at the chimney outlet by using sea weeds filters or absorbers	CPCONLY	F23J2900/15027		4
F23J2900/15041	8	Means for absorbing SOx using seawater	CPCONLY	F23J2900/15041		20
F23J2900/15061	8	Deep cooling or freezing of flue gas rich of CO2 to deliver CO2-free emissions, or to deliver liquid CO2	CPCONLY	F23J2900/15061		123
F23J2900/15081	8	Reheating of flue gases	CPCONLY	F23J2900/15081		163
