| Patents for F23C 9 - Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber (2,489) |
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| 07/07/1992 | US5127821 Premixing burner for producing hot gas |
| 06/25/1992 | DE4039463A1 Steam prodn. plant for burning coal or heavy heating oil - has 30-70 per cent thermic power of fuel fed to stationary body layer and remainder to combustion unit |
| 06/24/1992 | EP0491079A1 Burner head for premix combustion of a liquid fuel in an atmospheric combustion installation |
| 06/02/1992 | US5118283 Combustion installation |
| 05/20/1992 | WO1992008927A1 Flue gas recirculation for nox reduction in premix burners |
| 05/06/1992 | EP0483520A2 Method and apparatus for the combustion of gaseous and liquid fuels generating a low emission of noxious products |
| 04/23/1992 | DE4115644C1 Burner in heating boiler - incorporates return gas flues surrounding flame tube |
| 04/22/1992 | CN2102447U Ash-rich tail gas waste heat boiler for burning closed calcium carbide furnace |
| 04/16/1992 | WO1992006328A1 Combustion system for reduction of nitrogen oxides |
| 04/08/1992 | EP0478644A1 Process and device for generating heat through the flameless burning of a fuel in a gas current. |
| 04/07/1992 | US5102330 Opposed fired rotary kiln |
| 04/02/1992 | DE4131975A1 Boiler with recirculation circuit - reduces nitrous oxide discharged to atmosphere and uses fan to return combustion gases to boiler burner |
| 03/24/1992 | US5098282 Methods and apparatus for burning fuel with low NOx formation |
| 03/18/1992 | EP0475029A2 Fluidized bed furnace with a stationary bed |
| 03/11/1992 | CN1015823B Inertial centrifugal net type high temp. separator |
| 03/04/1992 | EP0394281B1 Controllable fluidized-bed combustion under pressure |
| 03/03/1992 | US5092761 Flue gas recirculation for NOx reduction in premix burners |
| 02/26/1992 | EP0472227A1 Hydrocarbon combustion process in which the carbon dioxide produced is prevented from dispersing into the atmosphere |
| 02/19/1992 | EP0471368A1 Combustion method for improved endothermic dissociation of contaminated acids |
| 02/11/1992 | US5087194 Blower-type burner suitable for use with heating boilers employing gas return ducting |
| 02/04/1992 | US5085577 Burner with toroidal-cyclone flow for boiler with liquid and gas fuel |
| 01/02/1992 | EP0463218A1 Method and device for combustion of fuel in a combustion chamber |
| 01/02/1992 | DE4020237A1 Burner for liq. or gaseous fuel - has outer housing to form duct for recirculation of combustion gases |
| 12/31/1991 | US5076779 Separation of oxidant mixing zone, fuel reaction zones |
| 12/31/1991 | US5076061 Stored energy combustor |
| 12/31/1991 | CA1293689C Low no- high efficiency combusion process |
| 12/17/1991 | US5073105 Low NOx burner assemblies |
| 12/12/1991 | DE4018621A1 Oil fired burner - has recirculating fan which directs hot gases through co-axial duct |
| 11/21/1991 | EP0457417A2 Burner |
| 11/05/1991 | US5062789 Aspirating combustion system |
| 10/30/1991 | EP0453639A2 Oil or gas power burner |
| 10/23/1991 | EP0452608A2 Improved burner for thermic generators |
| 10/16/1991 | EP0451648A2 Opposed fired rotary kiln |
| 09/27/1991 | WO1991014857A1 Improved low nox cogeneration process and system |
| 09/27/1991 | CA2079234A1 Low nox cogeneration process and system |
| 09/26/1991 | DE4109192A1 Oil or gas fired burner - has fan which supplies fresh air and also recirculates some of flue gases |
| 09/24/1991 | US5051040 Fluidized bed combustion system that is controllable under pressure |
| 09/12/1991 | DE4007621A1 Hot water boiler with burner equipped with fan - has radiant combustion chamber connected to burner outlet |
| 09/12/1991 | DE4006806A1 Fan fitted burner with flue gas return pipe - has air inlet in pipe at point of flue-gas temp. above dew-point |
| 09/11/1991 | EP0445413A2 Burner with flue gas recirculation, especially forced-draught burner |
| 09/11/1991 | EP0445393A2 Burner with flue gas recirculation, especially forced-draught burner |
| 09/05/1991 | WO1991013291A1 Burner with fuel gas recycling for free-flowing fuels |
| 09/04/1991 | CN1054302A Fluidized combustion apparatus with graded circulation |
| 09/03/1991 | US5044935 Method and apparatus for operating a firing plant using fossil fuels |
| 09/03/1991 | US5044932 Nitrogen oxide control using internally recirculated flue gas |
| 09/03/1991 | US5044287 Method of controlling combustion in a fluidized bed furnace |
| 08/28/1991 | EP0434737A4 Dynamic containement vessel |
| 08/21/1991 | EP0266377B1 Heating device with reheater |
| 08/20/1991 | US5040470 Steam generating system with NOx reduction |
| 08/01/1991 | DE4002238A1 Liquid fuel burner - has nozzle off centre in burner tube and connected to common feed pipe |
| 08/01/1991 | DE4002237A1 Gas burner combustion chamber - has exhaust gas feed component from furnace mounted concentrically in burner tube |
| 07/25/1991 | DE4001378A1 Flat flame type burner - ignites and partly burns mixture in anti-chamber before passing to combustion chamber |
| 07/10/1991 | EP0436113A1 Method for operating a combustion plant |
| 07/10/1991 | EP0435966A1 Process for salvaging waste and device for preparing said waste. |
| 07/03/1991 | EP0434737A1 Dynamic containement vessel |
| 06/26/1991 | EP0434056A1 Method for combusting wet waste |
| 06/26/1991 | EP0433862A1 Auxiliary heater for a vehicle, in particular auxiliary heater for a motor vehicle |
| 06/26/1991 | EP0433554A1 Burner for the combustion or liquid or gaseous fuels |
| 06/25/1991 | CA1285181C Nitrogen oxide reduction in furnaces |
| 06/12/1991 | EP0431314A2 Heating boiler burning liquid or gaseous fuels |
| 06/12/1991 | CN1052178A Intrtial, centrifugal, grid type high-temp. separator |
| 06/11/1991 | US5022332 Combustion method for improved endothermic dissociation |
| 06/11/1991 | US5022226 Reducing and oxidizing nox; heat exchanging, generating electricity |
| 06/05/1991 | EP0430376A2 Method for the combustion of fuel by stepped fuel feed and burner for use with it |
| 06/05/1991 | EP0430011A1 Burner for the combustion of liquid or gaseous fuels |
| 06/02/1991 | CA2031228A1 Method for the codmbustion of fuel by stepped fuel feed and burner for use with it |
| 05/22/1991 | EP0428117A2 Boiler with exhaust gas recirculation to the burner |
| 05/14/1991 | US5015174 Burner head for a forced-air gas burner |
| 04/10/1991 | CN2074860U Horizental multi-pipe separator |
| 04/03/1991 | EP0289487A4 Slagging combustion system |
| 03/26/1991 | US5002484 Method and system for flue gas recirculation |
| 03/21/1991 | DE3930569A1 Oil or gas burner mixing system - has coaxial air guide tube round nozzle stem of length twice hydraulic dia |
| 03/19/1991 | US5000102 Method for combusting wet waste |
| 03/07/1991 | DE3929579A1 Burner for gas fired heating appts. - uses gas pressure to drive fan which supplies combustion air |
| 03/06/1991 | EP0415037A2 Forced draught burner for heating boiler with waste gas recirculation |
| 03/01/1991 | CA2023907A1 Blower-type burner for use with heating boiling |
| 02/26/1991 | US4995807 Reducing the amount of nitrogen oxides |
| 02/26/1991 | CA1280685C Low nox radiant tube burner and method |
| 02/20/1991 | EP0413309A2 Reduced NOx combustion method |
| 02/20/1991 | EP0413104A1 Method of controlling combustion in a furnace |
| 01/31/1991 | DE3924908A1 Freezing dried carbon di:oxide from fossil fuel combustion - for sinking as dry ice into deep sea to counter greenhouse effect |
| 01/30/1991 | EP0410135A1 Burner for stoichiometric combustion of liquid or gaseous fuels |
| 01/29/1991 | US4988285 Reduced Nox combustion method |
| 01/24/1991 | DE3923238A1 Burner for liq. or gaseous fuel - incorporates system to recirculate products of combustion |
| 01/10/1991 | DE3920159A1 Heat generation by flameless combustion in gas flow |
| 01/08/1991 | US4983118 Low NOx regenerative burner |
| 01/08/1991 | US4982672 Hazardous waste |
| 12/27/1990 | WO1990015955A1 Process and device for generating heat through the flameless burning of a fuel in a gas current |
| 12/27/1990 | EP0404731A2 Burner with toric-cyclonic flow for boiler fired with liquid or gaseous fuel |
| 12/25/1990 | US4979894 Arrangement for burning fuels in a narrow combustion space |
| 11/01/1990 | WO1990012986A1 Process for salvaging waste and device for preparing said waste |
| 10/31/1990 | EP0394911A1 Combustion installation |
| 10/31/1990 | EP0394800A1 Premix burner for generating a hot gas |
| 10/31/1990 | EP0394281A1 Controllable fluidized-bed combustion under pressure. |
| 10/31/1990 | DE3913886A1 Control of nitrous oxide in boiler flue gases - by control of flow rate of recirculated flue gases to minimise formation of nitrous oxide before discharge into atmosphere |
| 10/31/1990 | DE3906854C1 Burner tube for a blue-burning oil burner |
| 10/17/1990 | EP0392158A2 Method for operating a combustion plant for fossil fuels |
| 10/10/1990 | EP0391858A1 Apparatus for flue gas recirculation in oil and gas burners |
| 09/26/1990 | EP0388886A2 Method of burning a premixed gas and a combustor for practicing the method |
| 09/20/1990 | DE3908268A1 Heating installation with a smoke pipe constructed as sound absorber, between boiler and chimney |