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Class 110/232 - Means for pulverizing solid fuel


Subclass of Class 110 - Furnaces
Definition: Apparatus wherein the means is capable of comminuting or
No. of patents: 82
Last issue date: 03/11/2008


1      
NumberTitleIssue Date
7341007Balancing damper
An apparatus for use in a furnace system to facilitate efficient and complete combustion of coal streams in a carrier gas. The apparatus, capable of being positioned horizontally or vertically in the coal pipes between the grinding mills and the furnace burner, cont...
03/11/2008
7271201Use of waste heat from Fischer-Tropsch synthesis to form dry pulverized fuel feedstock
A method and a system for drying a biomass, wet pulverized coal or combinations thereof, using heat from a Fischer-Tropsch synthesis in a heat exchanger to heat a nitrogen gas, using a flue gas in a heater to heat the heated nitrogen gas to a higher temperature, pas...
09/18/2007
6976440Fuel distribution device for fuel feed ducts and method of operating distribution device
A fuel supply duct, which supplies a mixed fluid of a solid fuel and carrier gas to one or more burners provided on the walls of a furnace, is provided with a branching part, and each of a plurality of branch ducts, which branch out from the branching part, is conne...
12/20/2005
6871604Conversion of waste into highly efficient fuel
Solid combustible waste materials are converted into highly efficient fuel by subjecting such materials to size reduction in suitable size-reducing equipment. The last piece of the equipment is a mill which pulverizes the waste materials into fine particles having a...
03/29/2005
6638396Method and apparatus for processing a waste product
A method and apparatus for processing a waste product and producing a synthesis gas is provided. The system includes a sealed, heated rotatable drum for preheating and preparing the waste material suitable for a plasma reactor, and processing the material...
10/28/2003
6564727Method and apparatus for uprating and controlling a solid fuel pulverized and exhauster system for a steam generator
A method for retrofitting a solid fuel pulverizer and exhauster system includes replacing the bowl drive motor 38 with a new drive motor which is operable to drivingly rotate the bowl 12 at the pre-retrofit speed but which provides relatively more horsepo...
05/20/2003
6338305On-line remediation of high sulfur coal and control of coal-fired power plant feedstock
The present invention makes possible the economic and environmental use of high sulfur coal by removing the sulfur at the power generating plant. This process reduces the risk of fire, explosion, and freezing in storing and transporting reclaimed, ground ...
01/15/2002
6325001Process to improve boiler operation by supplemental firing with thermally beneficiated low rank coal
The invention described is a process for improving the performance of a commercial coal or lignite fired boiler system by supplementing its normal coal supply with a controlled quantity of thermally beneficiated low rank coal, (TBLRC). This supplemental T...
12/04/2001
6234093Furnace
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
6202574Combustion method and apparatus for producing a carbon dioxide end product
A fossil fuel fired combustion apparatus and a method for operating the fossil fuel fired combustion apparatus are provided which offer the flexibility to use carbon dioxide (CO2) both as a desirable end product and as support to the combustion...
03/20/2001
5884776Dynamic classifier with hollow shaft drive motor
A dynamic classifier for a coal pulverizer has an improved drive mechanism which is mounted on top of a pulverizer and concentric with the classifier axis of rotation and is directly controllable. The drive mechanism is a variable-speed DC or AC electric ...
03/23/1999
5799592Inlet guide vanes for pulverizer exhausters
An exhauster assembly for a solid fuel pulverizer has an exhauster housing defining an inlet opening. A fan rotatably mounts in the exhauster housing and a duct defining an air stream flow path is in fluid connection with the inlet opening. An inlet guide...
09/01/1998
5687658Method of increasing the level of volatiles in a pulverized coal mixture
A method of burning coal with less than 10% volatiles in a burner supported by air. The coal is pulverized in a pulverizer and supplied to the burner mixed with a vehicle in the form of air. The object is more reliable ignition. The coal is separated from...
11/18/1997
5580005Arrangement for crushing and cooling material passing out of a firing oven
Arrangement for crushing and cooling the material passing out of a firing oven, wherein the crusher is arranged in the hot region, preferably immediately following the oven, in the path of the material upstream of the cooler. According to the invention th...
12/03/1996
5421274Coal fired steam generation apparatus with easily accessible coal pipe orifice
Apparatus for installation in an associated coal pipe for directing pulverized coal to an associated furnace assembly that includes a housing having an inlet, an outlet, and an access port intermediate the inlet and the outlet. The apparatus also includes...
06/06/1995
5363778High efficiency exhauster for a solid fuel pulverizing and firing system
A high efficiency exhauster which is capable of attaining operating efficiencies of up to 70% when employed in a solid fuel pulverizer firing system that includes a pulverizer which is operative to effect the pulverization therewithin of the solid fuel su...
11/15/1994
5363776Exhauster inlet venturi
An inlet venturi for coal-side exhauster fan structure used to deliver pulverized coal to a combustion chamber. Generally, the inlet venturi has an axial length comparable to that of the exhauster fan inlet, resulting in a shallow, smooth transition angle...
11/15/1994
5315939Integrated low NOx tangential firing system
An integrated low NOx tangential firing system (12) that is particularly suited for use with pulverized solid fuel-fired furnaces (10), and a method of operating a pulverized solid fuel-fired furnace (10) equipped with an integrated low NO...
05/31/1994
5277134Coal mill control process
The temperatures of the primary carrier gas supplied to a coal pulverizer and the fuel stream discharged from the pulverizer are controlled to keep the fuel stream temperature within a predetermined safe and efficient operating range regardless of the rat...
01/11/1994
5269472Waste processing system
A waste processing system in which containerized waste is received substantially at ground level and is conveyed to an elevator which carries the containerized waste to an upper level discharger which transports the containerized waste, dumps the containe...
12/14/1993
5251383Apparatus for and a method of disposing of wet sludge
Apparatus for disposing of wet sludge by conversion to a substantially dry product during grinding of the wet sludge in a drying atmosphere which promotes the separation of the grindings into coarse fractions and fine fractions so that the coarse fraction...
10/12/1993
5241915Apparatus and method to improve pulverizer and reduce NOx emissions in coal-fired boilers
An apparatus and method to improve pulverizer operation and reduce nitrogen oxide emissions from furnaces which burn pulverized coal from at least one pulverizer. A duct type burner burns a fuel in the primary air which heats the primary air supplied to t...
09/07/1993
5239936Low-temperature ashing of hazardous plastic waste
System and method for low temperature treatment of organic wastes containing potentially toxic concentrations of metals is described which comprises forming the waste material into pellets of preselected size, mixing the pellets with inert material, incre...
08/31/1993
5233932Shredder/compactor auger system
A shredding and feeding system for an incinerator, wherein a shredding chamber is isolated from atmosphere by means of an airlock through which material to be incinerated passes into the shredding chamber. The oxygen content of the shredding chamber is ma...
08/10/1993
5231939Apparatus for estimating an unburned component amount in ash in a coal-fired furnace
This invention relates to an in-ash unburned component estimating device for a coal-fired furnace which monitors the density of in-ash unburned component contained in burning waste gases to operate the furnace efficiently. The object of the invention is t...
08/03/1993
5217173Waste processing system
A waste processing system in which containerized waste is received substantially at ground level and is conveyed to an elevator which carries the containerized waste to an upper level discharger which transports the containerized waste, dumps the containe...
06/08/1993
5215017System and method for feeding paste material or slurry into a furnace
A fuel feed system and method for feeding low grade fuels to a fluidized bed furnace including an enclosure with a fuel inlet for introducing the fuel into the enclosure, an inlet for introducing air into the enclosure so as to propel the fuel through the...
06/01/1993
5197398Separation of pyrite from coal in a fluidized bed
Processes and arrangements that provide for the separation of pyrite from coal in a fluidized bed. The processes provide for more efficient and complete stratification of the bed materials in a vertical direction, so that the very top layer of the fluidiz...
03/30/1993
5189964Process for burning high ash particulate fuel
A continuous fluidized-bed combustion process for particulate carbonaceous feedstock of high ash content. The feedstock fuel is prepared from culm or mine tailings washed in a dense media and crushed to yield a fuel product having an ash content in a rang...
03/02/1993
5158024Combustion control apparatus for a coal-fired furnace
This invention relates to a combustion control apparatus for a powdered coal-fired furnace that monitors noxious substances contained within the burning waste gases, unburned substances within the ash and the power data of a pulverizing mill in order to o...
10/27/1992
5140916Staged combustion of fuel or sludge to reduce nitrous oxide emission
A system and apparatus is disclosed for delivering fuel to a furnace using an inert gas medium which has acquired moisture from the application of the furnace stack gas for drying the incoming fuel material during the reduction of the fuel to a desired si...
08/25/1992
5099771Apparatus and process for the incineration of waste particles
Apparatus and process for the complete breaking down and incineration of tires and other difficult-to-dispose-of-waste products in an energy-efficient manner. Small particles of the waste material are directed into a furnace of novel design. Within the fu...
03/31/1992
5095827Apparatus for reducing the moisture content in combustible material by utilizing the heat from combustion of such material
Apparatus for preparing in a circulating fluid bed boiler fuel material that is fed to the boiler with a moisture content that is normally high enough to plug grinding apparatus needed to grind the fuel material to a particulate size for combustion, opera...
03/17/1992
5069145Plastic refuse disposal system
Plastic and similar shreddable materials are reduced to small particles and pneumatically conveyed to the combustion space of a marine boiler for inceneration to dispose of such materials aboard ship. A granulator apparatus reduces the material to particu...
12/03/1991
5022328Shredder/compactor auger system
A shredding and feeding system for an incinerator wherein a shredding chamber is isolated from atmosphere by means of an airlock through which material to be incinerated passes into the shredding chamber. The oxygen content of the shredding chamber is mai...
06/11/1991
4998485Method of disposing of and apparatus for grinding moisture bearing waste material and using heat from burning waste material to reduce moisture content thereof
An apparatus arrangement in a system for circulating an inert fluid medium in a substantially closed and inert atmosphere during the grinding of wet gob to prevent spontaneous combustion and the initiation of fire from sparks created during grinding of mo...
03/12/1991
4995324Method of disposing of waste material
A system for recovery of the heat value of waste material, that heretofore has been wasted through landfill disposal, but in which the collected bales of waste material are passed through a bale breaker to release the waste material into a free condition ...
02/26/1991
4993323Fluidized bed combustion of aluminum smelting waste
An environmentally acceptable and effective method for thermal destruction of Spent Potliner (SPL) by Fluidized Bed Combustion (FBC) has been established. This method has overcome problems associated with ash agglomeration, ash leachate character and emis...
02/19/1991
4993332Hybrid fluidized bed and pulverized coal combustion system and a process utilizing said system
A hybrid combustion system is provided combining advantages of a fluidized bed combustion portion and a pulverized coal combustion portion. The former portion includes a fluidized bed chamber, a coal mill without an air separator, a recycling duct connect...
02/19/1991
4934284Coal distribution cone for pulverized coal burners
A pulverized fuel distribution cone for use in a pulverized fuel burner having a tubular burner pipe with flanged and furnace ends and an elbow connector having a flanged end for connection of the elbow to the flanged end of the burner pipe. The distribut...
06/19/1990
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