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| Number | Title | Issue Date |
| 7621227 | Granular biomass burning heating system A granular biomass burning furnace for use with any appropriate granular biomass, such as grains, cherry pits, etc. The furnace includes a three stage heat exchanger, a fuel injector, a fuel stirrer, an ash ejector, a wash down system, a three stage air inducer, a f... | 11/24/2009 |
| 7077632 | Blower having a blower tube incorporating a reduction device for reducing the clear flow cross section of said blower tube at idle operation A blower (1) has a housing (10) to which a blower pipe (2) may be removably connected. An internal combustion engine located within the housing (10) drives a blower wheel. The blower wheel, in turn, generates an air flow (11) withi... | 07/18/2006 |
| 7069866 | System for controlling the flow pattern of a recovery boiler The invention relates to a system for controlling the flow field in a soda recovery boiler, said soda recovery boiler comprising at least a furnace (1), primary air ports (4) in the lower part of the furnace, so-called secondary combustion air ports ( | 07/04/2006 |
| 7047891 | Overfire air port and furnace system An Overfire Air (OFA) port design and method for use in a furnace system is disclosed. The OFA port design effectively reduces the amount of harmful pollutants emitted into the atmosphere upon discharge from an associated furnace. ... | 05/23/2006 |
| 6932000 | System for feeding combustion air in a soda recovery boiler A method and a system for feeding combustion air of a soda recovery boiler to a furnace. The air is fed to the boiler furnace as primary air jets and auxiliary airjets, which are substantially shorter than the primary air jets. At least one primary airjet is placed ... | 08/23/2005 |
| 6807915 | Method of carbonization of organic waste and apparatus therefor The method of carbonization of organic waste according to the present invention comprises the steps of supplying organic waste to a dryer, reducing an amount of water in the organic waste by heating with high-temperature gas, supplying the organic waste to a carboni... | 10/26/2004 |
| 6745708 | Method and apparatus for improving the efficiency of a combustion device A method and/or apparatus for efficiently operating a combustion device including at least one control zone, with each control zone including at least one burner assembly, is disclosed and includes a) individually supplying fuel to each of the burner assemblies in e... | 06/08/2004 |
| 6655303 | Furnace A furnace consists of at least one wall-mounted burner tilted downward for feeding air-fuel mixture and of a prism-shaped ash hopper. Slopes of the walls of lower combustion chamber region define the slotted mouth of ash hopper. The bottom airflow device ... | 12/02/2003 |
| 6647903 | Method and apparatus for generating and utilizing combustible gas Apparatus and method for generating fuel gas and optionally, activated carbon gasification from biomass fuel.... | 11/18/2003 |
| 6615748 | Gasifier A method and portable apparatus is described for the conversion of cellulose and other blomass waste materials through a pyrolysis and partial combustion sequence in a downdraft gasifier to produce a gas which can be immediately utilized to fuel an intern... | 09/09/2003 |
| 6595146 | Furnace blower housing with integrally formed exhaust transition A furnace blower housing has a two-piece exhaust transition, one piece of which is an integral extension of the blower housing, that transitions a rectangular cross section outlet of the blower housing to a circular cross section outlet of the exhaust tra... | 07/22/2003 |
| 6519973 | Glass melting process and furnace therefor with oxy-fuel combustion over melting zone and air-fuel combustion over fining zone A process and furnace for melting glass is set forth wherein the majority of the combustion energy over the melting zone of the furnace is provided by oxy-fuel combustion while a majority of the combustion energy over the fining zone of the furnace is pro... | 02/18/2003 |
| 6490985 | Boiler The invention provides a boiler provided with low cost means which can reduce a concentration of CO, an unburned matter, an attached ash and the like near a side wall and maintain a combustion state well with a simple structure. In a boiler having a combu... | 12/10/2002 |
| 6332411 | Furnace The furnace is intended for burning solid fuel (mainly fire-wood) in continuous mode of operation, with significant amount of heat released in the form of hot combustion products usable in wood-drying installations, for house heating, destroying of refuse... | 12/25/2001 |
| 6321665 | Incinerator for waste management A waste management incinerator has a combustion chamber with a number of U-shaped air supply pipes protruding toward the chamber center. A number of air supply branch pipes are installed on the air supply pipes for supplying air to the combustion chamber ... | 11/27/2001 |
| 6318278 | Process for calcining an ore-based material In this process the material is passed through a precalcination device equipped with at least one fuel injector at the outlet of which a fuel injection zone is formed, then the at least partially calcined material is passed into the rotary kiln which at i... | 11/20/2001 |
| 6318277 | Method for reducing NOx emissions with minimal increases in unburned carbon and waterwall corrosion A method and apparatus for reducing NOx emissions in a furnace having a main combustion zone with a waterwall and apparatus for supplying main combustion air and fuel to the main combustion zone, also reduces unburned carbon and waterwall corrosion in the... | 11/20/2001 |
| 6302039 | Method and apparatus for further improving fluid flow and gas mixing in boilers This invention improves fluid flow, gas mixing and combustion in the furnaces of recovery boilers which burn liquor from various pulping processes, namely, the kraft process, the soda process, the sodium-based sulphite process, the closed-cycle CTMP (chem... | 10/16/2001 |
| 6279495 | Method and apparatus for optimizing the combustion air system in a recovery boiler A method and an apparatus for optimizing the combustion air system in a power boiler or chemical recovery boiler by improving fluid flow and gas mixing are disclosed, whereby one can increase boiler capacity and combustion uniformity and reduce particulat... | 08/28/2001 |
| 6260490 | Burner isolation valve for pulverized fuel systems A burner isolation valve or gate for use in the coal-delivery pipes of coal-fired power plants. Safety regulations often require that two valves be placed in the coal delivery line between a combustion chamber and an exhauster or pulverizer type deliver s... | 07/17/2001 |
| 6257156 | Wind box for a chemical recovery furnace The present document describes a wind box used in the air supply of a chemical recovery furnace, the wind box comprising a frame (1) having at least one air inlet opening (2) and at least one air supply opening (3) through which air is led from an air cha... | 07/10/2001 |
| 6234093 | Furnace A furnace is provided for burning soila organic fuels including highly volatile organic fuels. A combustion chamber with an ash hopper has a slot mouth opening defined by slopes of the walls of the combustion chamber. A burner is disposed beneath the ash ... | 05/22/2001 |
| 6220188 | Windbox burner The windbox burner has a register casing (2) with ports (3) for inflow of combustion air, secondary air pipe (35) enclosed by the register casing and having inlet ports (36) for secondary air, a ring damper (20) coaxial with the register casing and axiall... | 04/24/2001 |
| 6202575 | Corner windbox overfire air compartment for a fossil fuel-fired furnace An air compartment of a corner windbox of a tangential firing system of a fossil fuel-fired furnace for injecting secondary air into the furnace. The air compartment includes a channel portion with an entrance end communicating with an air delivery duct a... | 03/20/2001 |
| 6192811 | Air nozzle for a furnace An air nozzle for introducing secondary air into a furnace and including a housing provided with an inlet at one end thereof for receiving air and an outlet at the other end thereof for discharging the air. A damper is disposed in the housing in the path ... | 02/27/2001 |
| 6192810 | Laminar flow air register A register for use in conjunction with kraft recovery boilers or bark-fired boilers utilizes a pair of shaped damper foils to reduce turbulence and induce laminar flow of air from an associated windbox through a port in the boiler. The foils are mounted f... | 02/27/2001 |
| 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 |
| 6155183 | Method and apparatus for reducing NOx emissions from a multiple-intertube pulverized-coal burner A method and apparatus retrofitted to a multiple-intertube pulverized-coal burner to reduce NOx emissions of roof fired boilers. An internal two stage process controls the amount of secondary air which flows to the burner. The first stage inclu... | 12/05/2000 |
| 6148743 | Air nozzle for a furnace An air nozzle for introducing secondary air into a furnace and including a housing provided with an inlet at one end thereof for receiving air and an outlet at the other end thereof for discharging the air. A damper is disposed in the housing in the path ... | 11/21/2000 |
| 6058857 | Fluidized bed type incinerator A plurality of dispersive air pipes for combustion (11) containing a plurality of dispersive air holes and projecting in a cantilever fashion from the side walls (1b, 1c) in an oblique downward direction are provided in the lower portion of a combustion z... | 05/09/2000 |
| 6038988 | Waste incinerating method and apparatus with counter-current exhaust gas flow In a method of incinerating waste material in a parallel flow process wherein hot exhaust gases are conducted above a combustion chamber grate in the same direction as the material is moved on the grate, different temperatures zones are maintained to whic... | 03/21/2000 |
| 6024032 | Production of heat energy from solid carbonaceous fuels A process for the production of heat energy from solid carbonaceous fuels is disclosed which comprises subjecting the carbonaceous fuel to substantially anaerobic pyrolysis in at least one first zone and thereafter transferring the char resulting from the... | 02/15/2000 |
| 6006683 | Method and arrangement for supplying air to recovery boiler A method and an arrangement for supplying air to a recovery boiler. In the method, the air is supplied to the recovery boiler at at least one air supply level so that four vortices are formed therein, the vortices spinning, in pairs, in opposite direction... | 12/28/1999 |
| 5979341 | Fluidized-bed thermal reaction apparatus A fluidized-bed thermal reaction apparatus burns or gasifies combustible matter containing incombustible components, so that deposition of incombustible components in a fluidized-bed furnace is prevented, and incombustible components are smoothly removed,... | 11/09/1999 |
| 5960723 | Method and apparatus for reducing NOX emmissions from a multiple-intertube pulverized-coal burner A method and apparatus retrofitted to a multiple-intertube pulverized-coal burner to reduce NOx emissions of roof fired boilers. An internal two stage process controls the amount of secondary air which flows to the burner. The first stage inclu... | 10/05/1999 |
| 5893358 | Pellet fuel burner for heating and drying systems A pellet fuel burner includes a compact thermally insulated firebox for providing hot gases to a boiler, furnace or dryer. The apparatus includes a grate that includes a reciprocating arm for removing clinkers and ash from the grate. Pellet fuel feed is p... | 04/13/1999 |
| 5839375 | Apparatus for burning organic material An apparatus and method for burning organic farm bedding waste includes a firebox having an air injector disposed within the firebox. A heat exchanger is also disposed within the firebox above the air injector. The fuel to be burned, a mixture of organic ... | 11/24/1998 |
| 5824275 | Secondary and tertiary air nozzle for furnace apparatus An air nozzle assembly for use in associated combustion apparatus which includes a first elongated housing having first and second axial extremities. The first axial extremity thereof is open to the interior of the first housing and tapers axially from a ... | 10/20/1998 |
| 5799590 | Air supply system for incinerator apparatus Incinerator apparatus includes a furnace and a chimney in communication with the furnace. Within the furnace, a pipe having a bore and extending upward from the bottom of the furnace is disposed. The pipe is in communication with atmospheric air at the lo... | 09/01/1998 |
| 5746143 | Combustion system for a coal-fired furnace having an air nozzle for discharging air along the inner surface of a furnace wall A combustion system in which a coal/primary air mixture is discharged from burners located in the corners of the furnace towards an imaginary circle disposed in the center of the furnace. Air is discharged from air nozzles also located in the corners of t... | 05/05/1998 |
