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| Number | Title | Issue Date |
| 7228806 | Biomass gasification system A biomass gasification system for efficiently extracting heat energy from biomass material. The biomass gasification system includes a primary combustion chamber, a rotating grate within the primary combustion chamber for supporting the biomass during gasification, ... | 06/12/2007 |
| 7156027 | Method for producing soil, soil-processing unit, method for processing and unit for processing An object to be treated such as soil, burned fly ashes, or the like containing organic halides is introduced to a hermetically sealable thermal decomposition furnace 310 and heated under reduced pressure. Emitted gases of the object to be treated are treated ... | 01/02/2007 |
| 6832564 | Method of operating a multiple hearth furnace A method of operating a multiple hearth furnace with a plurality of vertically aligned hearth floors includes feeding a first material onto the uppermost hearth floor and moving it over the hearth floor before it falls through a drop hole onto the next lower hearth ... | 12/21/2004 |
| 6662735 | Reactor and method for gasifying and/or melting materials A reactor for gasifying and/or melting feed materials, the reactor including a charging section with a feed opening, through which the feed materials are charged to the reactor from above and a pyrolysis section which has an expanded cross section and is ... | 12/16/2003 |
| 6588349 | System for the drying of damp biomass based fuel System for drying a damp biofuel, includes a boiler (1) for combustion of the fuel. Further, the system includes a first heat drying chamber (2), a drying gas flow (3) heated by the thermal energy of the combustion gases from the boiler and/or by steam, t... | 07/08/2003 |
| 6324999 | Incinerator for removing noxious substances The present invention provides an incinerator for removing toxic substances contained in a flue gas. That is, there is here disclosed an incinerator for removing toxic substances in which a removal section for removing the toxic substances generated from ... | 12/04/2001 |
| 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 |
| 5913273 | Incinerator including vibrator and incinerator including drying chamber A waste incinerator including separate burning-, blower-, chimney- and ash-receiving chambers. A suction-discharge port is provided in a wall between the burning chamber and the chimney chamber for discharging gases from the burning chamber through a chim... | 06/22/1999 |
| 5752452 | Apparatus and method for oxygen lancing in a multiple hearth furnace An improved apparatus and method for efficiently processing material, e.g. incinerating waste material, particularly dewatered waste water sludge, in a multiple hearth furnace by injecting high velocity jets of oxygen into the heating or drying zone of th... | 05/19/1998 |
| 5555821 | Apparatus and process for removing unburned carbon in fly ash An apparatus and process for removing unburned carbon in fly ash. The apparatus includes a stainless steel heating chamber heated in a range from 800 to 1200 degrees F. The fly ash is introduced at one end of the heating chamber and moved slowly to an opp... | 09/17/1996 |
| 5515793 | Incineration furnace An incineration furnace for disposal of waste in which substantially complete burning of waste materials is obtained. A stirring member is rotatably supported in the interior of an incinerator housing, making up the main incineration furnace body. Air for... | 05/14/1996 |
| 5351418 | Process for drying of granular or powdered carbon by electrical resistance heating A process of drying moist or wet carbon particles in a series of tubular drying sections by electrical resistance heating where the current is introduced into the uppermost column of carbon particles through a graphite block positioned at the center of th... | 10/04/1994 |
| 5316471 | Method and apparatus for mass transfer in multiple hearth funaces An apparatus for improving mass transfer in a multiple hearth furnace has a plurality of risers adjacent the furnace center shaft which are in fluid communication with a source of treatment fluid. The risers have radially extending branch pipes, each pipe... | 05/31/1994 |
| 5261335 | Firebox furnace with automatic feeding system An automatic firebox provided with a fuel hopper that delivers fuel through a pivoting funnel to a grate burning area. The grate burning area is provided with at least one pivoting fuel grate which operates automatically in sequence with the fuel feed and... | 11/16/1993 |
| 5231936 | Apparatus for drying and burning high-hydrous combustible solids This invention is an apparatus for drying and burning high-hydrous combustible solids comprising: a hopper for containing high-hydrous combustible solids; a drier for drying said high-hydrous combustible solids when transported from said hopper to said dr... | 08/03/1993 |
| 5195449 | Dry distillation type incinerator A distillation type incinerator generates gas containing much combustible gas owing to restricted air introduction at feeding the combustible matters thereto and minimum necessary supply of air for combustion and dry distillation, and generates residue wh... | 03/23/1993 |
| 5109918 | Device for the thermal treatment or organic and inorganic substances A device for the thermal treatment of organic substances and of inorganic substances contaminated with organic substances which makes a high throughput possible. The reactor contains several bottoms provided with perforations with ceramic ball sections wh... | 05/05/1992 |
| 5094177 | Concurrent-flow multiple hearth furnace for the incineration of sewage sludge filter-cake An apparatus and process for the incineration of sewage sludge in a concurrent-flow multiple hearth furnace-incinerator which complies with the fundamental thermodynamic conditions required to establish a sustained and stable combustion condition. The sew... | 03/10/1992 |
| 5080026 | Melting disposal method of sludge A melting disposal method of sludge. The method of the invention having the steps of collecting a plurality of cakes of dehydrated sludge generated at a plurality of sewage disposal plants at one melting disposal plant; incinerating or drying a substantia... | 01/14/1992 |
| 5020453 | Vertical incinerator A vertical incinerator for burning general refuses and industrial wastes which comprises a plurality of sets of grates disposed at different levels within a furnace to divide the furnace into a plurality of combustion chambers in such a manner that the re... | 06/04/1991 |
| 5018458 | Furnace combustion zone temperature control method An improved method for controlling combustion zone temperature in a furnace independent of flue gas oxygen content is disclosed. The method comprises supplying a carrier gas containing a fine mist of liquid water droplets to the furnace combustion zone to... | 05/28/1991 |
| 4998485 | Method 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 |
| 4949655 | Process for the utilization of powdered solid waste This invention encompasses a process for the utilization of dried powdered waste as a fuel, in particular, dried powdered aqueous waste. The object of the invention is to eliminate the use of conventional auxiliary fuel to aid in thermal oxidation of wast... | 08/21/1990 |
| 4592290 | Method of incinerating stalks, especially of straw Stalks of crop material, especially straw, are incinerated by comminuting them to pieces having a length of substantially 8 to 10 cm, pneumatically transporting the stalks to a separator in which the air is separated from the stalks and the stalks are the... | 06/03/1986 |
| 4539917 | Combustion heater for oil shale A combustion heater for oil shale heats particles of spent oil shale containing unburned char by burning the char. A delayed fall is produced by flowing the shale particles down through a stack of downwardly sloped overlapping baffles alternately extendin... | 09/10/1985 |
| 4531462 | Biomass gasifier combustor The present invention is directed to a biomass gasifier combustor which operates by gasification and combustion of the biomass to produce a clean effluent gas which can be used directly for grain drying or other applications where thermal energy is requir... | 07/30/1985 |
| 4505210 | Multiple hearth furnace chamber A multiple hearth furnace chamber where each arched or conical hearth is independently supported by the outer metal shell. An expansion joint below each hearth allows for vertical movement of the interior refractory wall panels without significant vertica... | 03/19/1985 |
| 4483258 | Incinerator steam generation system A new and improved incinerator steam generation system subjecting to combustion debris such as municipal waste, utilizing the heat derived therefrom to produce steam for steam boiler, electrical generating facilities, heating facility for industrial or co... | 11/20/1984 |
| 4483256 | Biomass gasifier combustor system and components therefor An improved biomass gasifier combustor system including a furnace, a screw feeder system for feeding a biomass fuel to the furnace and a venturi eductor system adapted for drawing a gaseous combustion product from a combustion chamber of the furnace is di... | 11/20/1984 |
| 4481890 | Method for controlling temperatures in the afterburner and combustion hearths of a multiple hearth furnace The present invention relates to a method for efficiently incinerating waste material, particularly dewatered sludge, in a multiple hearth furnace by controlling the temperature of the individual hearths of the furnace within certain prescribed limits by ... | 11/13/1984 |
| 4459923 | Method and apparatus for efficiently controlling the incineration of combustible materials in a multiple hearth furnace system The present invention relates to a method and apparatus for controlling the operation of a multiple hearth furnace system for efficiently incinerating combustible materials, such as sludge in which the air of combustion is essentially all introduced at th... | 07/17/1984 |
| 4453474 | Method for controlling temperatures in the afterburner and combustion hearths of a multiple hearth furnace The present invention relates to a method for efficiently incinerating waste material, particularly dewatered sludge, in a multiple hearth furnace by controlling the temperature of the individual hearths of the furnace within certain prescribed limits by ... | 06/12/1984 |
| 4452153 | Rotary hearth pyrolyzer with tapered spreader roll A rotary hearth pyrolyzer is described as having a conically tapered roll for uniformly spreading waste material that is charged onto the hearth for pyrolyzation. The taper of the spreader roll is such that the linear speed at any point measured longitudi... | 06/05/1984 |
| 4449460 | Process and apparatus, mainly for burning agricultural plant refuse Freshly harvested agricultural materials having a moisture content no greater than 45% by weight are burned in a furnace in which the housing thereof is divided into preburning and afterburning spaces by a baffle wall. The preburning space contains a hori... | 05/22/1984 |
| 4442782 | Feed distributor for multiple hearth furnace A multiple hearth furnace feed distributor including a conical table feeder attached to the center shaft of the furnace for rotation therewith, together with a stationary convolute plow fixed above the conical table feeder.... | 04/17/1984 |
| 4434725 | Mass burning self-cleaning incinerator A method and apparatus for the consumption of relatively mass amounts of refuse in which a plurality of refuse burning grates are spaced one above the other. The refuse is supplied to and deposited selectively on selected ones or all of the grates while t... | 03/06/1984 |
| 4421037 | Waste material treatment furnace A waste material treatment furnace includes a furnace chamber having an interior surface formed by a flexible sheet of an insulating fabric to minimize heat-up and cool-down time and to facilitate interior surface repair. The treatment furnace additionall... | 12/20/1983 |
| 4414905 | Method and equipment for treatment of fuel for fluidized bed combustion The invention relates to the method and equipment for treatment of fuel for fluidized bed combustion, which includes drying, classification and crushing of the fuel. The method for treatment of fuel comprises mixing the fuel with hot ash removed from the ... | 11/15/1983 |
| 4411203 | Process for utilizing low calorific value off-gases and simultaneous deodorization thereof A process is disclosed in which any off-gas generated in a wastewater treatment plant, which off-gas has a low calorific (or BTU) value about one-tenth of that of natural gas, and usually even less, may be profitably burned in a multiple hearth furnace if... | 10/25/1983 |
| 4398476 | Method for incinerating sewage sludge A method and an apparatus of incinerating dewatered sludge without using an auxiliary fuel comprising pelletizing the partially dewatered sludge having a water content of 70 to 75%, drying the pellets with a heat source obtained by burning gases formed by... | 08/16/1983 |