Ash Receiving And Handling Devices Patents (Class 110/165R)
  • Patent number: 6135035
    Abstract: A method of and apparatus for the combustion of animal wastes to avoid release of objectionable odors and to obtain useful products from the animal wastes involving the drying of the animal waste in a primary heat exchange dryer, mixing the dried animal waste material with a combustible fuel and moving the mix of dried waste and combustible fuel to a burner assembly of a furnace for burning, the exhaust from the primary heat exchange dryer being collected so that gases in the exhaust are used as combustion air for the burner assembly and with exhaust from the burner assembly housing being separated into fly ash and acceptably clean exhaust.
    Type: Grant
    Filed: March 2, 1999
    Date of Patent: October 24, 2000
    Inventor: Tommy D. Masek
  • Patent number: 6095063
    Abstract: An exhaust treatment machine. The exhaust treatment machine has a burning chamber and a wet chamber. Water is injected into the wet chamber by a water inlet at a bottom portion of the wet chamber. At least two rotor blades are installed over the bottom of the wet chamber to generate a vortex flow of the water. Thus, the vortex flow of the water acentrically flushes away the product produced in the burning chamber and removes it via a drainpipe. Furthermore, those clots agglomerated from the powers produced in the burning chamber are fragmented by the rotor blades. The problems of blocking the drainpipe is thus resolved.
    Type: Grant
    Filed: August 26, 1999
    Date of Patent: August 1, 2000
    Assignees: UTEK Semiconductor Corp., United Microelectronics Corp.
    Inventors: Ju-Long Lee, Hunter Chung
  • Patent number: 6082442
    Abstract: A floor (2) of the device communicates with one or more ash-extraction pipes (3) associated with a semi-cooled conveyor. The conveyor is a drag conveyor (5) that travels over a semi-cooled floor (12) inside a housing (4). Several such semi-cooled floors are positioned one above another at several levels. The floors (12) at each level are divided into several tables (16) separated by slots (17) that extend across the direction traveled by the conveyor. The tables are mutually displaced level by level such that the rear end of every table is above the front end of a table in the floor just below it.
    Type: Grant
    Filed: May 20, 1998
    Date of Patent: July 4, 2000
    Assignee: Babock Kraftwerkstechnik GmbH
    Inventor: Bernhard Michelbrink
  • Patent number: 5992336
    Abstract: Bottom ash and flyash having high LOI is reburned in a pulverized coal furnace. The bottom ash is added to the coal supply before the coal is pulverized. Flyash is added to the pulverized coal stream for injection with the pulverized coal or is separately injected into the furnace at or slightly above the level of the coal burners in the furnace. The bottom ash and flyash is added to the coal in direct proportion of 1% to 3.5% of the coal.
    Type: Grant
    Filed: December 31, 1996
    Date of Patent: November 30, 1999
    Assignee: Wisconsin Electric Power Company
    Inventor: Bruce W. Ramme
  • Patent number: 5984671
    Abstract: This invention relates to a sealing device useful for attachment to a process equipment such as vertical shaft kiln (VSK) for providing air-seal self-controlled discharge of product from the said equipment, which comprises a chamber (1) having at its top end an inlet (3) with flange (2) for fitting to the discharge chute of a process equipment and a discharge outlet (16) at its bottom end, the said chamber being provided with a partition wall (4) having an inlet gate (5) & a discharge gate (6) hinged to its top & bottom respectively, the free ends of the hinged gates being such as to sit on means (7) and (8) to provide air seal, means (9,10,11,12,13,14,15,17,18,19,20& SOL) being provided for simultaneous operation of the inlet & discharge gates, the said means [9(a) & (b) and SOL] being connected to a control circuit for actuating the movement of the gates, the discharge outlet being fitted onto a volumetric discharge unit (21) provided with means (22) for measuring the quantity of product discharge.
    Type: Grant
    Filed: June 7, 1996
    Date of Patent: November 16, 1999
    Assignee: Council of Scientific & Industrial Research
    Inventors: Dilip Kumar Dutta, Wahid Ahmed, Pranab Barkakati, Jayanta Jyoti Bora, Subodh Chandra Kalita, Ajoy Barkataki, Prabhat Chandra Goswami, Umesh Chandra Borah
  • Patent number: 5979340
    Abstract: A robotic mechanism which can be attached to a furnace hopper and includes a frame which supports a pole insertion mechanism for inserting a pole into a furnace hopper. The pole insertion mechanism is supported from the Fame by a gimbal and moves the pole axially. Hydraulic actuators rotate the pole insertion mechanism about the gimbal. A control system is associated with the mechanism and enables an operator to position the end of the pole within the hopper to remove clinkers.
    Type: Grant
    Filed: June 5, 1998
    Date of Patent: November 9, 1999
    Assignee: The Board of Regents of the University of Texas System
    Inventors: Carl Thomas Michael Haas, Sidigata Venkataraman Sreenivasan, Alfred Ellis Traver, Kamel Shawki Saidi, Jongwon Seo, Richard Lael Greer
  • Patent number: 5954000
    Abstract: Apparatus for cooling ash exiting from circulating fluidized bed equipment includes an enclosure having a floor, a plurality of walls disposed around the floor and a ceiling. The enclosure also has an inlet and an outlet. The outlet is disposed in one of the walls near to the floor and the apparatus also includes tubing disposed within the enclosure for heat exchange relationship with ash entering the inlet of the ash cooler. In some forms of the invention the floor is planar and is disposed in oblique relationship to a horizontal plane. The outlet may be disposed proximate to the floor at the lowest elevational part thereof. The enclosure may be generally rectangular and may have first and second opposed sides and opposed third and fourth sides. The first and second sides are longer than the third and fourth sides. In some cases the ratio of the length of each of the first and second sides to the length of the third and fourth sides is two or three to one.
    Type: Grant
    Filed: September 22, 1997
    Date of Patent: September 21, 1999
    Assignee: Combustion Engineering, Inc.
    Inventor: Paul J. Panos
  • Patent number: 5924368
    Abstract: A waste treatment furnace includes a first waste treatment chamber with a first burner chamber communicating therewith, and a second waste treatment chamber with a second burner chamber communicating therewith. A common bottom wall is positioned under the first and second waste treatment chambers which is inclined downwardly from the first chamber to the second chamber to facilitate transfer of waste. Each burner chamber includes a burner and a plurality of protuberances disposed across its inner surface. The protuberances effectively reflect heat from the first and second burners so that the heater air in the first and second burner chambers is homogenized.
    Type: Grant
    Filed: June 23, 1997
    Date of Patent: July 20, 1999
    Assignee: Fusoh Co., Ltd.
    Inventor: Masatoshi Kato
  • Patent number: 5915308
    Abstract: A discharge apparatus includes a housing into which a discharge pipe of a carbonization drum opens. A residue discharge chute which starts from the housing opens into a conveying device ending at an outlet. A filling-level meter is disposed at the residue discharge chute. The conveying device has a profiled separating shelf with an end remote from the mouth of the residue discharge chute, at which a bar screen is formed. The bar screen covers a delivery opening for fine residue and ends at the outlet for coarse residue. A vibrator is associated with the conveying device.
    Type: Grant
    Filed: July 20, 1998
    Date of Patent: June 29, 1999
    Assignee: Siemens Aktiengesellschaft
    Inventors: Karl May, Werner Axt, Eugen Schlag, Heinz Sattler, Klaus Busch
  • Patent number: 5868084
    Abstract: A new apparatus and process for efficient removal of carbon from fly ash has been developed, whereby carbon removal occurs through oxidation as combustion. The ignition of the carbon is accomplished by bulk heating and molecular impingement of a suspended layer of fly ash by a heated oxidizing gas strewn, and the desired level of carbon burnout is accomplished by maintenance of combustion conditions.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: February 9, 1999
    Assignee: U.S. Scientific, L.L.C.
    Inventor: Alan Bachik
  • Patent number: 5857420
    Abstract: The method of an apparatus for incinerating and melting wastes along with incombustible materials in the wastes which comprise introducing wastes in a horizontal rotary furnace, incinerating the wastes at a temperature from C. to 1, C., and melting the ashes of the wastes together with the remaining products which are vitrified at a temperature of more than 1, C., by an oxygen type burner in which an oxygen-fuel mixture has an oxygen content of 50% in the mixture. The exhaust gas generated in the incineration and melting processes is introduced to a dust collector for cleaning the exhaust gas.
    Type: Grant
    Filed: July 25, 1995
    Date of Patent: January 12, 1999
    Assignee: Nippon Metal Co., Ltd.
    Inventor: Shinroku Nishiyama
  • Patent number: 5799591
    Abstract: An incinerator for incinerating medical waste in which a self-contained unit including a hopper and a fire chamber are supported on a conveyor mechanism, the fire chamber being provided with an opening and a chute coupling the hopper and the fire chamber for supplying material placed into the hopper to the fire chamber; a scrubber tank is provided which includes a rotatable scrubber, a conveyor conduit and a vacuum pump including a suction mechanism to suck up ash from the fire chamber and convey it through the conveyor conduit to the scrubber tank, a water tank is juxtaposed to the scrubber tank, and the interiors of the water tank and the scrubber tank are coupled together for supplying water to the scrubber tank while the scrubber is rotated for condensing the ash into a slurry which drops to the bottom of the scrubber tank and thereby eliminate the ash content supplied to the scrubber, a pump coupled to the scrubber tank through an extraction conduit for extracting the slurry with the bottom of the scrubb
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: September 1, 1998
    Inventor: Berris M. Anderson
  • Patent number: 5799590
    Abstract: 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 lower end thereof and is provided with a plurality of air holes therein. The pipe also includes a top air hole at the top end thereof. The top air hole has a transverse cross-sectional area smaller than that of the bore of the pipe. External air is spontaneously introduced from the outside of the furnace and flows out through the top air hole. As air flows out of the top air hole, it is also uniformly distributed through the air holes into the furnace and garbage to be burned in said furnace.
    Type: Grant
    Filed: November 19, 1996
    Date of Patent: September 1, 1998
    Assignee: Sunny Industry Company, Limited
    Inventor: Takuya Noguchi
  • Patent number: 5782363
    Abstract: The invention relates to the use of open-pass ash from coal-fired plants as bed sand in fluidized-bed firing.
    Type: Grant
    Filed: October 17, 1996
    Date of Patent: July 21, 1998
    Assignees: SICOWA Verfahrenstechnik fur . . . Co. KG, ProMineral Gesellschaft zur . . . mbH
    Inventor: Gunther Kirchen
  • Patent number: 5775237
    Abstract: A dry bottom ash handling system contemplates a plurality of hoppers disposed beneath a solid fuel-fired steam boiler. Each hopper includes angled walls converging at a generally rectangular opening controlled by a grate door. Air inlets are provided at intersections between adjacent angled walls to (1) facilitate combustion of unburned fuel in the storage hopper, and (2) facilitate flow of ash through the hopper opening. Ash flowing through the hopper opening enters a crusher and is then conveyed via a vacuum line to a point of disposal including a mobile tank truck that receives heavier ash particles and allows bypassing of lighter particles to a silo.
    Type: Grant
    Filed: December 30, 1996
    Date of Patent: July 7, 1998
    Assignees: Florida Power Corporation, United Conveyor Corporation
    Inventors: William P. Reilly, John S. Tomaszek
  • Patent number: 5769009
    Abstract: A hearth particle bed incineration furnace is used to remove dioxin contained in a combustion residue through the mixing of the hearth particle bed particles and the combustion residue at a temperature of at least C., preferably from C., for at least 30 minutes, preferably 30 minutes to 2 hours, through the adjustment of the rate of removal of the mixture. An incineration furnace is provided which can be compact and yet have a large capacity and a stable operation over a long period of time.
    Type: Grant
    Filed: July 17, 1995
    Date of Patent: June 23, 1998
    Inventor: Shigeru Saitoh
  • Patent number: 5752451
    Abstract: An ash control valve apparatus, for use in a system that includes a fluidized-bed system, including a housing, a seat in the housing for passage of particulate material, a plug dimensioned and configured for mating engagement with the seat; and apparatus for moving the plug from a first position wherein the plug is disposed in seated engagement with the seat and a second position wherein the plug is disposed in spaced relationship to the seat. The apparatus for moving the plug includes apparatus for mounting the plug, that includes an elongated tube to which the plug is fixed. The apparatus for axially moving the tube includes a cylinder and piston assembly; and a clamp engaging the tube and operatively connected to the cylinder of the cylinder and piston assembly.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: May 19, 1998
    Assignee: Combustion Engineering, Inc.
    Inventors: Yoram Schaker, Joseph D. Dombrowski, Raymond C. Germain
  • Patent number: 5743195
    Abstract: A stand which will hold an apparatus for comminuting cremation remains. The stand includes a support for the comminuting apparatus and built in vents which communicate with a blower motor to draw in all of the resulting dust and other contaminants resulting from this process. A series of filters are placed in communication with the vents to trap all pollutants.
    Type: Grant
    Filed: February 10, 1997
    Date of Patent: April 28, 1998
    Inventor: William E. Sucharski
  • Patent number: 5738022
    Abstract: A truck is parked adjacent a coal boiler ash recovery unit and includes a first inlet pipe provided to receive ash from the recovery unit and an outlet pipe provided to convey dust from within the storage chamber of the truck to a bag house where the dust is loaded onto another truck. Water spray may be provided within the storage compartment of the first-mentioned truck to moisten the captured material to reduce dusting.
    Type: Grant
    Filed: April 11, 1997
    Date of Patent: April 14, 1998
    Assignee: Florida Power Corporation
    Inventor: William P. Reilly
  • Patent number: 5735224
    Abstract: A thermal dechlorinating apparatus for collected ash, having a vertically elongated cylindrical apparatus body, a collected ash inlet and a collected ash outlet which are provided on the apparatus body and spaced in a vertical direction thereof, an inlet port for heated air provided on the portion of the apparatus body between the inlet and the outlet, an exhaust gas outlet provided on the portion of the apparatus body above the collected ash inlet, a rotary shaft provided along the axial direction of the apparatus body, a screw provided on the rotary shaft, and heating means provided on the portion of the apparatus body between the collected ash inlet and the collected ash outlet. Heated air is led into the apparatus body through the heated air inlet port. A stirred fluidized layer is formed in the portion of the apparatus body above the heated air inlet port, and a moving layer is formed below the heated air inlet port.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: April 7, 1998
    Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.
    Inventors: Gentaro Takasuka, Mazumi Itaya
  • Patent number: 5722333
    Abstract: This invention provides a variety of incineration furnace with modular fire grate apparatus for cylindrical incinerator furnaces of water jacket configuration. The invented fire grate module is provided with refuse dump agitation capability from underside of waste fuel dump on the fire grate and also with air supply function in the fire grate apparatus itself.
    Type: Grant
    Filed: April 10, 1995
    Date of Patent: March 3, 1998
    Inventor: Kwangsoo Hyun
  • Patent number: 5715762
    Abstract: A truck is parked adjacent a coal boiler ash recovery unit and includes a first inlet pipe provided to receive ash from the recovery unit and an outlet pipe provided to convey dust from within the storage chamber of the truck to a bag house where the dust is loaded onto another truck. Water spray may be provided within the storage compartment of the first-mentioned truck to moisten the captured material to reduce dusting.
    Type: Grant
    Filed: May 29, 1996
    Date of Patent: February 10, 1998
    Assignee: Florida Power Corporation
    Inventor: William P. Reilly
  • Patent number: 5711233
    Abstract: The arrangement for treating combustion residues of a combustion installation comprises an ash discharger into which opens a fall shaft, into which the solid combustion residues fall from a furnace grate. The ash is conveyed from the ash discharger into the discharge shaft via a diagonally ascending push-out chute by a push-out ram whose operating rate is so adjusted that the ash is piled up in the fall shaft in a tower formation reaching above the liquid level. Fresh water or a chemical is introduced into the discharge shaft via an inlet. The ash discharger water present in the ash discharger and charged with fine particles is drained into a hermetically sealed settling tank via a draw-off duct. Ash discharger water, with which a chemical can be mixed via another line, is fed from the upper region of the settling tank by a pump via a return line to spray nozzles which are arranged in the upper region of the fall shaft.
    Type: Grant
    Filed: March 8, 1996
    Date of Patent: January 27, 1998
    Assignee: Martin GmbH fuer Umwelt- und Energietechnik
    Inventors: Johannes J. E. Martin, Oliver Gohlke, Walter J. Martin
  • Patent number: 5662051
    Abstract: A method of treating solid residue resulting from combustion of a sulfur-containing fuel in the hearth of a boiler having a circulating fluidized bed, in which method limestone is inserted into the hearth so as to make it possible to absorb the resulting sulfur dioxide in the form of calcium sulfate CaSO.sub.4, the method further including the following steps:1) prior to being inserted into the hearth, the fuel is ground down to less than 100 microns;2) prior to being inserted into the hearth, the limestone is ground down to a grain-size centered in the range 100 microns to 150 microns, with a maximum of 1 mm;3) at the base of the hearth, the combustion residue is collected, which residue includes lime and calcium sulfate resulting from taking up the sulfur dioxide SO.sub.2 evolved by the combustion, and the residue is subjected to heat treatment in a reactor, in which both solid matter based on lime CaO, and also a gaseous mixture containing, in particular, sulfur dioxide SO.sub.
    Type: Grant
    Filed: April 5, 1995
    Date of Patent: September 2, 1997
    Assignee: GEC Alsthom Stein Industrie
    Inventor: Jean-Xavier Morin
  • Patent number: 5642676
    Abstract: An ash control valve apparatus for use in a system that includes a fluidized-bed system which includes a housing, a seat in the housing for passage of particulate material, a plug dimensioned and configured for mating engagement with the seat, and apparatus for moving the plug from a first position wherein the plug is disposed in seated engagement with the seat to a second position wherein the plug is disposed in spaced relationship to the seat. The apparatus for moving the plug includes apparatus for mounting the plug that includes an elongated tube to which the plug is fixed. The apparatus for mounting includes a plurality of axially extending ribs disposed on the circumference of the elongated tube and a plurality of channels disposed in a bore in the plug.
    Type: Grant
    Filed: September 25, 1995
    Date of Patent: July 1, 1997
    Assignee: Combustion Engineering, Inc.
    Inventors: Yoram Schaker, Joseph D. Dombrowski, Raymond C. Germain
  • Patent number: 5630853
    Abstract: A coal slagging gasifier has a gasifying vessel over a quenching chamber partly filled with water below the surface of which a wall of a cylindrical, metal shield dips. The gasifying vessel has a hearth including a slag tap having a slag outlet with a lowermost opening at substantially the same horizontal level as an annular burner and a ring-shaped nozzle. The burner which surrounds the outlet is spaced therefrom and inset into a recess surrounding the outlet, and the nozzle surrounds the burner. Outlet ports from the nozzle project through a ceiling of the shield to direct a flow of combustion sustaining gas vertically downwards into the quenching chamber from the outlet ports and towards the water. An opening in the centre of the shield ceiling exposes the interior of the shield to the burner and the slag tap outlet. The burner separately supplies fuel gas and combustion air.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: May 20, 1997
    Assignee: British Gas PLC
    Inventor: David F. Eales
  • Patent number: 5611289
    Abstract: A gasifier is disclosed. The gasifier comprises a primary chamber for receiving therein biomass waste material and other related volatile solids to be gasified. A fume transfer vent permits the escape of fumes from the primary chamber. A mixing chamber accepts the fumes from the fume transfer vent. The fumes then flow to an afterburner chamber where a burner member produces a heating flame so as to cause the additional full oxidization of the constituents of the fumes so as to oxidize the constituents. A partitioning wall is disposed between the flame chamber and the primary chamber so as to preclude the heating flame from entering the primary chamber and to also preclude the radiation from the heating flame from directly entering the primary chamber, thereby precluding direct contact and physical disturbance of the waste material. A heat transfer chamber in fluid communication with the afterburner chamber accepts the fully oxidized fumes therefrom.
    Type: Grant
    Filed: March 28, 1995
    Date of Patent: March 18, 1997
    Inventor: David Brookes
  • Patent number: 5595482
    Abstract: A control measuring and supply apparatus and method for receiving a substantially, continuous flow of fluent material from a source of supply; the assembly having a bottom-sealed diverter plate, optionally positionable to direct the fluent material, by gravity, to either one or the other of a pair of adjacent, parallel supply chambers, each of the supply chambers having lower, sealed valve plates which can be optionally opened or closed, a and visa versa, one of the supply chambers being filled with the fluent material while the other is simultaneously emptied, and power operated control motors for controlling the operation of the diverter and valve plates; the diverter plate and valve plates cooperating with seals disposed out of the path-of-movement of the fluent material.
    Type: Grant
    Filed: October 27, 1994
    Date of Patent: January 21, 1997
    Inventor: Marshall F. Parsons
  • Patent number: 5582117
    Abstract: Embodiments of a combustion firepot are shown and described, each having a means for dumping ashes and other burn debris from the firepot. The preferred embodiment is a pellet stove firepot with an interior ramped wall. Pellets are delivered to the firepot and directed by the ramp to rest and burn in a lower burn section on top of a movable floor. The movable ash-dumping floor is adapted to swing or slid away from the firepot to reveal an opening to permit ashes which have accumulated above it to be dumped out the bottom of the firepot. Preferably, when the heat demand for a room is satisfied, pellets are allowed to burn to ash, the floor is cycled open and closed to dump the ash, and then pellet delivery and burning is resumed. The dumping procedure may be done manually or automatically and either occasionally or periodically, depending on the demands placed on the system by the ash-producing tendency of the chosen fuel.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: December 10, 1996
    Assignee: Mendive Needs Corporation
    Inventors: Richard J. Mendive, Dennis E. Needs, Ronald J. Mendive
  • Patent number: 5551357
    Abstract: A method and system for recycling a sulfur sorbent present in the combustion residue of a circulating, fluidized bed, fossil-fuel combustor is disclosed. The method can comprise the steps of, adding water to the combustion residue, classifying the combustion residue into a fuel ash portion and a hydrated sorbent portion, and returning the hydrated sorbent portion to the circulating, fluidized bed, fossil-fuel combustor.
    Type: Grant
    Filed: August 19, 1994
    Date of Patent: September 3, 1996
    Assignee: Tampella Power Corporation
    Inventors: Song Wu, Samuel G. Probst, Christina M. Edvardsson, Michael G. Alliston
  • Patent number: 5543117
    Abstract: A system for providing heated fluidized bed gasification of a residual waste liquor provides a bed of granular material and a source of liquor provided to the material bed. An injector is situated in the material bed and communicates with an air source, a fuel source and a steam source. Fuel and air are combusted in the injector and mixed with the steam which forms a combustion product and steam mixture which is in turn injected into the material bed. The combustion and mixing is separated from the bed material by being confined within the injector. The injector is a bubble cap having at least one hole or an injector made of a porous ceramic material.
    Type: Grant
    Filed: April 11, 1995
    Date of Patent: August 6, 1996
    Assignee: The Babcock & Wilcox Company
    Inventor: John B. Kitto, Jr.
  • Patent number: 5493578
    Abstract: The ash melting furnace disposes the combustion ash resulted from incineration of municipal or other sorts of waste by melting it utilizing as the main fuel the unburnt carbon contained in the ash itself. The ash melting furnace includes a stationary plasma torch which uses air for the working gas, and which is so placed facing the combustion ash heaped up within the furnace as to project its hot gas jet thereon. The furnace further includes a torch unit controller that actuates the plasma torch to secondarily heat and melt the ash.
    Type: Grant
    Filed: September 21, 1993
    Date of Patent: February 20, 1996
    Assignee: Ishikawajima-Harima Heavy Industries Co., Ltd.
    Inventors: Minoru Fukusaki, Hitoshi Hagihara, Satoshi Inoue
  • Patent number: 5392719
    Abstract: A renovated incinerator is essentially composed of a furnace, a circulation means, and an exhausting means. The circulating means picks up any particle which is unburned or not burned thoroughly and delivered to the furnace for continuous burning until all waste material become ashes which are collected and forming asbestos. A circular water tank is integrally formed surrounding the furnace to utilize steam from boiling water in the tank to generate power.
    Type: Grant
    Filed: February 10, 1994
    Date of Patent: February 28, 1995
    Inventor: Hung L. Wen-Chiang
  • Patent number: 5375538
    Abstract: A boiler having vertical walls of large size constituted by screens of heat exchanger tubes, fitted with a flue gas recycling circuit, and including a prismatic bottom portion referred to as an "ash box". The recycled combustion gases are fed via at least one duct that opens out into one of the end walls of a hopper disposed beneath the ash box.
    Type: Grant
    Filed: December 15, 1992
    Date of Patent: December 27, 1994
    Assignee: Stein Industrie
    Inventors: Bernard Goussu, Samuel Thobois
  • Patent number: 5366637
    Abstract: A method for dewatering the refuse ash generated by a municipal solid waste facility by adding to the ash a copolymer and a nonionic surfactant selected from the group consisting of primary alcohol ethoxylates, secondary alcohol ethoxylates and alkyl phenol ethoxylates. The copolymer consists of repeat units of an ethylenically unsaturated compound and an acrylamido alkane sulfonic acid compound.
    Type: Grant
    Filed: May 24, 1993
    Date of Patent: November 22, 1994
    Assignee: Betz Laboratories, Inc.
    Inventor: Umit Turunc
  • Patent number: 5331906
    Abstract: In order to stably maintain a combustion capability in a combustion furnace for coal gassification, it is necessary to exhaust molten slag produced within the furnace without the slag stagnating. The present invention provides, in a combustion furnace for coal gassification, a slag exhausting device which is configured in such a manner that the cooling of molten slag being exhausted from the furnace is minimized to prevent the slag from solidifying and causing other slag to stagnate. The slag exhausting device is disposed at the center of a bottom wall of the combustor, and has a lower cylindrical portion and an upper bank opening upwardly and flared at an angle of The height H from the bottom wall to the top of the upper bank, a height L and an inner diameter ds of the cylindrical lower portion and a diameter D of the combustor are set to satisfy the relations of ds/D=0.2-0.4, L/ds=0.2-0.6 and H/D=0.05-0.15.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: July 26, 1994
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Keisuke Sonoda, Yoshinori Kobayashi, Fumiya Nakashima, Kimishiro Tokuda
  • Patent number: 5323760
    Abstract: The present invention relates to a vacuum apparatus in combination with a stove for burning combustible materials, such as cordwood or wood pellets, comprising a combustion chamber in which the material is burned, a stove housing separate but operatively connected to the combustion chamber, and a vacuum apparatus located in the stove housing. The vacuum apparatus comprised of a motor, a housing, a seal plate, a cover plate, a bag cage, vacuum bag, and a hose is used to remove ash, debris, and other combusted material residue from the combustion chamber, thereby maintaining the stove in a clean condition. A vacuum hose installed in the vacuum apparatus transports the combusted material residue from the combustion chamber and surrounding areas into a vacuum bag in the vacuum apparatus. A method for installing a vacuum is also disclosed.
    Type: Grant
    Filed: March 4, 1993
    Date of Patent: June 28, 1994
    Inventor: Christopher J. Johnson
  • Patent number: 5320050
    Abstract: An ash melting furnace for heating and melting ashes by a burner. The furnace body is formed with a preheating chamber and a melting chamber. Of the bottom wall of the melting chamber (12), the portion closer to the charging port is convex in transverse cross section, while the portion closer to the discharging port is concave in transverse cross section.
    Type: Grant
    Filed: June 16, 1993
    Date of Patent: June 14, 1994
    Assignee: Hitachi Zosen Corporation
    Inventors: Michio Ishida, Yoshitoshi Sekiguchi, Kunio Sasaki, Hideo Shimotani
  • Patent number: 5315937
    Abstract: A waste material combustion apparatus for disposing of an assortment of waste material like garbage, sludge and burnable trash in which the ash produced as a result of combustion of that assorted material is collected and transported to a bag house where the ash solids are separated, the air is released to atmosphere, and the separated ash residue is collected as a product of the combustion.
    Type: Grant
    Filed: August 7, 1992
    Date of Patent: May 31, 1994
    Inventor: Robert M. Williams
  • Patent number: 5311637
    Abstract: A vacuum apparatus for temporary installation in a fireplace or stove of the type having a central opening with a floor at the bottom and a flue at the top thereof for cleaning the flue. The apparatus includes a hollow funnel-shaped adapter member configured at its upper end to generally conform to the size and shape of the bottom portion or throat of the flue of the fireplace and has a bottom end connected by a flexible hose to the inlet of a collection container. The collection container has an outlet which receives the free end of a vacuum cleaner hose which is connected to the intake of a conventional vacuum cleaner. The adapter member is supported by a pair of spring biased telescoping legs which maintain a resilient seal at the top end of the adapter member in sealing relation with the bottom portion or throat of the flue of the fireplace.
    Type: Grant
    Filed: March 22, 1993
    Date of Patent: May 17, 1994
    Inventor: Kenneth J. Broussard
  • Patent number: 5309848
    Abstract: A reversible, wear-resistant ash screw cooler section is provided with a carbon steel inner liner having a high chrome, high carbide overlay emplaced thereon to improve its wear and erosion resistance. To facilitate obtaining the maximum wear out of the section, the replaceable section is made symmetrical about its vertical and longitudinal centerline and provided with suitable compatible flanges and symmetrically placed cooling water hookups on the ends of the section to allow the section to be reversed, end for end, and reconnected to the ash screw cooler.
    Type: Grant
    Filed: September 29, 1992
    Date of Patent: May 10, 1994
    Assignee: The Babcock & Wilcox Company
    Inventors: Kenneth L. Santelmann, Avelino G. Bolumen, Roger A. Clocker, Thomas L. Garabedian, Donald C. Housley, Russell A. Stanley, James M. Tanzosh
  • Patent number: 5297495
    Abstract: For the incineration of waste materials, a process is described, in which the waste materials are reduced in size as far as necessary and are subsequently optionally mixed with fuel and are incinerated at temperatures from to C. to form liquid ash, a major part of which is removed as liquid slag from the combustion chamber, and the pollutants are removed from the exhaust gases produced by the incineration. The process is characterized in that the pollutant-containing droplets of liquid ash which are suspended in the exhaust gas are separated at a temperature, which is close to the incineration temperature by at least one mass force separator and are subsequently either solidified alone or are combined with the liquid slag and solidified together with said slag.
    Type: Grant
    Filed: June 25, 1992
    Date of Patent: March 29, 1994
    Assignee: Metallgesellschaft AG
    Inventor: Ekkehard Weber
  • Patent number: 5288195
    Abstract: A dumping container for collecting, transporting and dumping primarily ashes removed from an incinerator. A pair of pivoted fore and aft frame members, of hollow box like crossection engage the tines of a manual cable operated hoist. The cable hoist provides the mobility needed to transport the dumping container to the incinerator, elevate it to the open top receiving vessel, and provide tilting and dumping in cooperation with a pair of hooking members on the bottom of the dumping container and the pivotal action of the dumping container fore and aft frame members. An integral water spray bar, connectable to an external water supply, provides water to wet down the ashes during the removal operation.
    Type: Grant
    Filed: March 20, 1992
    Date of Patent: February 22, 1994
    Inventor: Roger L. McIntyre
  • Patent number: 5271674
    Abstract: Apparatus and method are provided for predicting ash deposition in combustion systems. An ash sample is obtained from a selected fuel under controlled conditions. Chemical composition characteristics of the obtained ash sample are identified by a particle-by-particle analysis of the obtained ash sample. An equilibria phase diagram is determined responsive to the identified characteristics of each particle of the obtained ash sample. Then a eutectic temperature of each the particle of the obtained ash sample is determined utilizing the identified equilibria phase diagram.
    Type: Grant
    Filed: December 21, 1992
    Date of Patent: December 21, 1993
    Assignee: Riley Storker Corporation
    Inventor: David P. Kalmanovitch
  • Patent number: 5255615
    Abstract: A system for discharging ash comprises a hopper provided with a system of hydraulically activated valves having the function of separating the hopper environment from the extractor environment, thereby creating an accumulation store inside the hopper which allows brief shutdowns for any required maintenance in the downstream extractor and the plant, and which prevents the direct falling of large lumps of agglomerated ash onto the belt and also, in the case of a multifuel boiler, avoids radiation to the extraction belt when gas or oil is used as fuel. Downstream of the area of ash discharge from the extractor a system of crushing, cooling, transport and storage of the ash is also provided.
    Type: Grant
    Filed: October 29, 1991
    Date of Patent: October 26, 1993
    Inventor: Mario Magaldi
  • Patent number: 5237940
    Abstract: Waste is incinerated in a rotary furnace which discharges slag and exhaust gas connected to an afterburning chamber. The slag is discharged from the afterburning chamber directly into a glass melting furnace while the exhaust gas is removed to scrubbers which remove residues which are then fed to the glass melting furnace. Cullet and other glass forming materials are also added to the furnace in order to form a vitrified product.
    Type: Grant
    Filed: April 1, 1992
    Date of Patent: August 24, 1993
    Assignees: Beteiligungen Sorg GmbH & Co. KG, Man Gutehollnungshutte AG
    Inventors: Helmut Pieper, Helmut Lausberg
  • Patent number: 5228398
    Abstract: A method and apparatus for controlling the viscosity of slag contained in a rotary incinerating kiln by detecting the position at which the slag exits the outlet of the kiln, thereby determining changes in the viscosity of the slag. If the viscosity deviates from a predetermined range of values, appropriate additives are supplied to the slag for bringing the viscosity back to within the range of the predetermined values. There is also disclosed a method and apparatus for measuring viscosity as "angular" viscosity.
    Type: Grant
    Filed: July 6, 1992
    Date of Patent: July 20, 1993
    Assignee: Rollins Environmental Services, Inc.
    Inventors: Harold L. Byerly, Bruno R. Kuhn, Donald C. Matter, Eustathios Vassiliou
  • Patent number: 5216967
    Abstract: A refuse-burning apparatus having a main combustion-housing with an interior in which refuse is placed and burned, which main combustion-housing has a plurality of substantially-upright walls, a top wall, and a lower meshed screen. One side wall has an entrance through which refuse may enter into the interior of the housing, which entrance is selectively opened and closed. A loader for loading refuse into the interior of the housing is operatively associated with the entrance, so that refuse may be inserted into the interior when the entrance is opened up. A ventilator supplies air to the interior. An after-burner is mounted to the top wall of the main housing for achieving secondary burning of the refuse, which after-burner has a main frame, at least one burner mounted to the main frame, and exhaust for directing the products of combustion from the main frame to the ambient surroundings. In the preferred embodiment, the bottom meshed screen is periodically vibrated to loosen any ash lodged therein.
    Type: Grant
    Filed: March 16, 1992
    Date of Patent: June 8, 1993
    Inventor: Sam Mormino
  • Patent number: 5188043
    Abstract: The incinerator comprises a furnace (1) having a waste charging zone (2), an air insufflation intake (5), a smoke release outlet (8) and a discharge zone (10) for ash and unburnt material. The discharge zone (6) for ash and unburnt material communicates with the receiving hopper (10) of a bath equipped with an electroburner (12) intended to maintain the bath in the molten state.
    Type: Grant
    Filed: December 17, 1991
    Date of Patent: February 23, 1993
    Assignee: Trepaud S.A.
    Inventor: Pierre Trepaud
  • Patent number: RE34814
    Abstract: Provided is a process to continuously dry remove ash from the bottom of steam boilers by discharging the ash on a high temperature resistant conveyer which is enclosed in a tight sealed envelope. Also is provided an apparatus for accomplishing this which has a steel conveyer belt constructed to withstand high temperatures and enclosed in a sealed steel box connected to the bottom of the boiler so that the conveyer continuously receives and discharges ash from the boiler.
    Type: Grant
    Filed: December 19, 1991
    Date of Patent: January 3, 1995
    Inventor: Mario Magaldi