Class 110/206 - Including pump

Subclass of Class 110 - Furnaces
Definition: Apparatus provided with means for impelling the returned
No. of patents: 19
Last issue date: 08/26/2003

Number	Title	Issue Date
6609907	Apparatus and method to control emissions of nitrogen oxide A combustion apparatus and process for improved flue gas recirculation wherein the recirculation line penetrates into an exhaust duct, such as the exhaust stack for capturing and directing a portion of said flue gas through the recirculation line which is...	08/26/2003
6261090	Gas combustor and combustor system for combustion of smoke, off gases and other emissions A combustor system provides high temperature, high-dwell combustion of emission products, as from charcoal kilns, with inner and outer combustion chambers. Multiple inlets receive emission products from multiple heat exchangers omnidirectionally extending...	07/17/2001
6186080	Recovery boiler A boiler recovers a soda component from pulp spent liquor and is able to prevent carry-over of unburnt char and deformation of a char bed configuration and to attain a stable combustion with low NOx generation. By regulating the combustion air ...	02/13/2001
6116170	Waste incinerator A waste incinerator is provided which can completely prevent environmental pollution by dioxins. Exhaust gas from an incinerator is guided into a glass melting furnace by a duct, and blown into molten glass through a bubbling pipe to decompose dioxins in ...	09/12/2000
5957064	Method and apparatus for operating a multiple hearth furnace A multiple hearth furnace having a drying zone, a combustion zone and a cooling zone includes a recirculation loop that recycles exhaust gas from the drying zone to the cooling zone. In some embodiments, a first control loop including a temperature measur...	09/28/1999
5678498	Process and apparatus for ventless combustion of waste A ventless, combustible waste reduction process and apparatus which can utilize any type of combustion means for disposing of hazardous, as well as non-hazardous, burnable waste. Such wastes include toxic combustible liquids, oil slurries, soils contamina...	10/21/1997
5347958	Heat recovery apparatus and an improved heat recovery method An apparatus for recovering heat, and a flue gas recovery and/or recirculation and/or induced draft apparatus for boilers. The apparatus for recovering heat may be used in combination with the flue gas recovery and/or recirculation and/or induced draft ap...	09/20/1994
5241916	Procedure for supplying combustion air and a furnace therefor The procedure for supplying combustion air during grate firings, in which the primary combustion air is introduced into the fuel, and secondary combustion air is introduced directly into the flow of exhaust gas, and in which, in addition, some of the exha...	09/07/1993
4903615	Atmospheric gas heating unit with external recycling of exhaust gas to reduce nO_x An improved burner head for a forced air furnace is disclosed which includes a burner tube fitted with gas nozzles, air flow openings, and a flame tube. At least one radial opening is provided between the end of the burner tube and an end of the flame to ...	02/27/1990
4766851	Combustion chamber for a fluidized-bed furnace A combustion chamber with a fluidized bed furnace having a nozzle plate, a fuel feed above the nozzle plate, a primary air feed below the nozzle plate, an exhaust gas channel at an upper end of the combustion chamber, and heat-exchanging heating surfaces ...	08/30/1988
4699071	Nitrogen oxide reduction in furnaces A method and apparatus for reducing the NOx content of hot stack (exhaust) gas produced by a furnace burning a fossil fuel, comprising recycling part of said NOx -containing stack gas, in admixture with cold fresh air, back into the ...	10/13/1987
4656972	Method and apparatus for reducing NO_x in exhaust gases from fluidized-bed boiler Temperature of exhaust gases from a fluidized-bed boiler is lowered by means of heat exchange and dust entrained in the exhaust gases is efficiently collected by a dust collector. Part of the gases discharged from the dust collector are mixed with heated ...	04/14/1987
4512266	City refuse incinerator for the prevention of clinker formation A city refuse incinerator provided with stoker type firing equipment for combustion of city refuse has gas injectors installed low on the inside of a furnace body to inject low temperature inert combustion exhaust gas, purified in a dust collector, so tha...	04/23/1985
4470358	Continuous solid fuel-bed degasification burner apparatus In a combustion chamber (20) the biomass to be degasified is placed via a conveyor screw (11) on to a trough (24). In the degasification chamber (20) there prevails a high temperature due to the vicinity of the flame chamber (27), so that the biomass is b...	09/11/1984
4335660	Apparatus and method for flue gas recirculation in a solid fuel boiler A solid fuel boiler or furnace with a flue gas-air mixture introduced into the fuel grate is disclosed. The flue gas is mixed with air such that approximately 30% of the mixture is flue gas. By providing this mixture under the burning fuel bed, the temper...	06/22/1982
4292904	Furnace and boiler system and method of operation thereof A furnace system, especially a coal burning furnace and boiler system, in which the coal to be burned is placed on a grate at the bottom of the combustion chamber. According to the invention, automatic means are provided for supplying the coal to the boil...	10/06/1981
4242972	Combustion system with partial recirculation of exhaust gases and feed mechanism therefor A combustion system for particulate wood waste, coal, peat and other combustible materials is disclosed. The system comprises means for feeding combustion material into the combustion chamber of a furnace and means for recirculating a portion of the exhau...	01/06/1981
4089278	Furnace, especially a coal burning furnace, and method of operation A furnace, especially a coal burning furnace, in which the coal to be burned is placed on a grate near the bottom of a combustion chamber. According to the invention, a fan, or blower, has the inlet and the outlet connected to conduits which lead downward...	05/16/1978
3969899	Fuel burning apparatus and heat engine incorporating the same For the purpose of eliminating toxic compounds from exhaust gases emitted from fuel burners, boilers, furnaces and heat engines, an improved fuel burning apparatus is proposed in which fuel is combusted in the presence of a hot mixture of water vapor and ...	07/20/1976

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Class 110/206 - Including pump