Continuous Advance Patents (Class 110/257)
  • Patent number: 8960108
    Abstract: This invention provides a system and method for efficiently and completely combusting oil in mixture with particulate solids. A furnace (kiln) having a feed nozzle with a lead screw drives the mixture from a feed hopper. This nozzle includes forced-air jets/ports at its tip providing makeup air and allowing atomization of the mixture. The nozzle thereby directs the mixture into a rotating combustion chamber that is tilted downwardly from the front toward a solid waste outlet port at the rear. Uncombusted fuel and air backflow to an upper, secondary chamber near the primary chamber front, and are completely combusted at a high temperature. Gasses exit a flue that can include a heat exchanger. This heat exchanger can be operatively connected to a heating device or other mechanism that converts the heat into usable energy. The nozzle can include a cone with axially tilted air ports about its perimeter.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: February 24, 2015
    Assignee: SilverStreet Group, LLC
    Inventors: James L. Lobik, Peter A. Howe
  • Publication number: 20140290541
    Abstract: An energy conversion system comprises a plurality of concentrically arranged combustion chambers for passing incinerated waste plastic fuel along a generally S-shaped combustion path into a discharge section for thermally coupling the incinerated waste plastic fuel to a fluid material to facilitate an energy conversion process. The combustion chambers are arranged concentrically around a single rotatable feed mechanism and the combustion chambers are in fluid communication with one another. The fluid material is contained within a boiler in fluid communication with the combustion chambers for heating the fluid material to facilitate the energy conversion process.
    Type: Application
    Filed: June 16, 2014
    Publication date: October 2, 2014
    Inventors: WILLIAM HUNKYUN Bang, THOMAS ANTHONY PATTI PATERNOSTRO
  • Publication number: 20140290543
    Abstract: A burner system for consuming waste fuel comprises a combustion unit having at least three combustion chambers arranged concentrically around a variable speed conveyor screw for directing the waste fuel along a fuel consumption path through the combustion chambers; an air chamber surrounding the combustion chambers to facilitate preheating combustion air delivered to the combustion chambers and to facilitate insulating the combustion chambers against thermal losses to the environment; a boiler in fluid communication with the combustion chambers for heating fluid to facilitate an energy conversion process; and an intelligent control system for controlling operation of the burner system. The control system controls operating parameters of the boiler including pressure, temperature and fluid level and activates an emergency stop alarm if any one of the operating parameters is outside a predetermined range of operating values.
    Type: Application
    Filed: June 16, 2014
    Publication date: October 2, 2014
    Inventors: WILLIAM HUNKYUN BANG, THOMAS ANTHONY PATTI PATERNOSTRO
  • Publication number: 20140290542
    Abstract: A burner system for consumption of waste fuel comprises a screw conveyor having a longitudinal hollow interior for air distribution and radially disposed air intake orifices connecting the hollow interior to a plurality of combustion chambers, which includes a first combustion chamber disposed centrally around the screw conveyor and at least one orifice; a second combustion chamber disposed concentrically around the first combustion chamber, receiving burning waste fuel from the first combustion chamber, and in fluid communication with the air intake orifice to provide air from an air blower through the orifice; and a third combustion chamber disposed concentrically around the second combustion chamber, receiving waste fuel from the second combustion chamber, and in fluid communication with the air intake orifice to provide air from the air blower.
    Type: Application
    Filed: June 16, 2014
    Publication date: October 2, 2014
    Inventors: WILLIAM HUNKYUN Bang, THOMAS ANTHONY PATTI PATERNOSTRO
  • Patent number: 8833276
    Abstract: The present invention provides a burner system which uses waste fuels, especially waste plastic fuels. Burner size is minimized by having multiple combustion chambers concentrically located around a rotating screw conveyor. Heat efficiency is improved by having air passages disposed around the combustion chambers, thus preheating air for the combustion prior to its delivery to the combustion chambers, while simultaneously thermally insulating the combustion chambers against the environment. Waste fuel is transported from a fuel hopper to the combustion chambers by a rotating screw conveyor having the spiraling auger blades. Speed of screw conveyor rotation controls the consumption of waste fuel and, thus, the amount of thermal energy generated in the burner. The burner system includes an intelligent control system for controlling operation of the burner system, so that the burner system performs at optimum efficiency, safely and with minimum operator intervention.
    Type: Grant
    Filed: August 12, 2012
    Date of Patent: September 16, 2014
    Inventors: William Hunkyun Bang, Thomas Anthony Patti Paternostro
  • Publication number: 20130213283
    Abstract: A two stage refuse gasification combustion system for processing refuse is disclosed. The system may contain features such as an advancer, a first and second gasifier, a gas regulator, and a post combustor. Additionally, methods for regulating gas and advancing refuse through a two stage refuse gasification combustion system are disclosed.
    Type: Application
    Filed: December 21, 2012
    Publication date: August 22, 2013
    Applicant: COVANTA ENERGY CORPORATION
    Inventor: Covanta Energy Corporation
  • Publication number: 20130192500
    Abstract: The present disclosure relates to a fire grate type incineration apparatus, which includes movable fire grates and fixed fire grates alternatively arranged in a step pattern and incinerates waste while moving the waste to a discharge hole by the operation of the movable fire grates, wherein a channel is formed in the fixed fire grates so that a coolant cools the fixed fire grates while flowing along the channel, wherein the air introduced into the movable fire grates cools the movable fire grates and then is preheated and supplied into the incineration apparatus through an exhaust hole formed in the movable fire grates.
    Type: Application
    Filed: February 1, 2013
    Publication date: August 1, 2013
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jong Soo JURNG, Sung Min CHIN, Eun Seuk PARK, Min Su KIM
  • Patent number: 8474387
    Abstract: A method and apparatus for incinerating different types of combustible waste in a cement manufacturing process. Two combustion chambers for incinerating waste are arranged in series, with first combustion chamber being a down draft chamber in which there is a downward flow of combustion gas and waste fuel to a waste and gas outlet. The second chamber is adaptable to support waste on a supporting surface incorporated in the compartment, wherein the waste is transported through the compartment from a waste inlet to a waste outlet along a circular path.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: July 2, 2013
    Assignee: FLSmidth A/S
    Inventor: Steven Miller
  • Publication number: 20130014680
    Abstract: A waste disposal plant includes a combustion chamber (2) inside which waste laid on a combustion grate (3) is burnt, which permits the entrance of an adequate quantity of combustion air in the chamber. The combustion grate includes at least a handling group formed by of fire bars or plates (7), which move alternatively one with respect to the other by advancing the waste on the grate. A handling group permits the alternate movement of the fire bars (7) which are divided in movable fire bars (7a) and fixed fire bars (7b), alternately disposed one with respect to the other, on transversal rows resting one upon the other according to a longitudinal placement with alternate steps.
    Type: Application
    Filed: November 18, 2010
    Publication date: January 17, 2013
    Inventor: Emanuele Corbani
  • Publication number: 20130014679
    Abstract: A waste disposal plant includes a combustion chamber (2) inside which waste laid on a combustion grate (3) is burnt. The grate permits the entrance of an adequate quantity of combustion air in the chamber through it. The combustion grate includes at least a handling group formed by fire bars or plates (7), which move alternatively one with respect to the other by advancing the waste on the grate. A handling group allows the alternate movement of the fire bars (7) which are divided in movable fire bars (7a) and fixed fire bars (7b), alternately disposed one with respect to the other, on transversal rows resting one upon the other according to a longitudinal placement with alternate steps.
    Type: Application
    Filed: November 18, 2010
    Publication date: January 17, 2013
    Applicant: T.M.E. S.p.A.
    Inventor: Emanuele Corbani
  • Patent number: 8353394
    Abstract: A continuous constant-rate feeding system includes at least one storage unit, a scratching unit and a water-cooled screw feeding unit. The storage unit includes a tank and an agitator. The tank stores material and includes upper and lower chambers. The agitator is rotationally located in the upper chamber for agitating the material. The scratching unit includes upper and lower scratchers and a material divider. The upper scratcher is located in the upper chamber and can spin to convey the material from the upper chamber into the lower chamber. The lower scratcher is located in the lower chamber and can spin to convey the material from the lower chamber into the water-cooled screw feeding unit. The material divider locates between the upper and lower chambers and spin automatically or manually to fall the material from the upper chamber into the lower chamber through a specific aperture alternately.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: January 15, 2013
    Assignee: Atomic Energy Council—Institue of Nuclear Energy Research
    Inventors: Lieh-Chih Chang, How-Ming Lee, Chin-Ching Tzeng
  • Publication number: 20130008357
    Abstract: A waste disposal plant includes a combustion chamber (2) inside which waste laid on a combustion grate (3) is burnt, which permits the entrance of an adequate quantity of combustion air in the chamber. The combustion grate includes a handling group formed by fire bars or plates (7), which move alternatively one with respect to the other by advancing the waste on the grate. The handling group permits the alternate movement of the fire bars (7) which are divided in movable fire bars (7a) and fixed fire bars (7b), alternately disposed one with respect to the other, on transversal rows resting one upon the other according to a longitudinal placement with alternate steps.
    Type: Application
    Filed: November 19, 2010
    Publication date: January 10, 2013
    Applicant: TM.E. S.p.A.
    Inventor: Emanuele Corbani
  • Publication number: 20120318180
    Abstract: The present invention provides a burner system which uses waste fuels, especially waste plastic fuels. Burner size is minimized by having multiple combustion chambers concentrically located around a rotating screw conveyor. Heat efficiency is improved by having air passages disposed around the combustion chambers, thus preheating air for the combustion prior to its delivery to the combustion chambers, while simultaneously thermally insulating the combustion chambers against the environment. Waste fuel is transported from a fuel hopper to the combustion chambers by a rotating screw conveyor having the spiraling auger blades. Speed of screw conveyor rotation controls the consumption of waste fuel and, thus, the amount of thermal energy generated in the burner. The burner system includes an intelligent control system for controlling operation of the burner system, so that the burner system performs at optimum efficiency, safely and with minimum operator intervention.
    Type: Application
    Filed: August 12, 2012
    Publication date: December 20, 2012
    Inventors: William Hunkyun BANG, Thomas Anthony Patti PATERNOSTRO
  • Patent number: 8147772
    Abstract: A method and apparatus for eliminating mold spores, pathogens and odor from material like equine bedding. The apparatus includes two or more pairs of augers including blades to control the size of the material and to move it in a zigzag fashion through heat.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: April 3, 2012
    Inventor: Philip Graham Wilford
  • Publication number: 20110253018
    Abstract: An air-cooled grate block of a grate for the thermal treatment of waste, in which the grate blocks are arranged so as to rest one on top of the other in a step-like manner. The block body designed as a cast part has a top wall, forming a bearing surface, and a front wall, on which a foot is integrally formed. A first cooling passage section runs from a wall inlet, arranged on the underside of the top wall, through the top wall and the front wall to an outlet opening arranged in the front wall. A cooling passage wall which starts from an inlet opening arranged adjacent to the foot and to the front wall and is at a distance from the front wall and the top wall forms a second cooling passage section fluidically connected to the first cooling passage section at the wall inlet. A grate which consists of the abovementioned grate blocks is likewise described.
    Type: Application
    Filed: November 2, 2009
    Publication date: October 20, 2011
    Applicant: HITACHI ZOSEN INOVA AG
    Inventor: Werner Brennwald
  • Publication number: 20110209646
    Abstract: An energy and steel recovery system has a suspension column and a plurality of suspension supports operably disposed therein wherein the supports are spaced from one another along the length of thereof. The suspension column includes a mechanism for receiving tires and other wastes with an energy value onto one of the supports and feeding the tires to an adjacent downwardly disposed support to further gasify the same under low oxygen to preclude combustion. The column is configured to provide for a number of zones including heating, drying, volatizing, and fixed carbon formation which are collectively referred to herein as a “fractionation process.
    Type: Application
    Filed: August 25, 2010
    Publication date: September 1, 2011
    Inventors: Robert L. Kohnen, Dale Van Fossen, Michael Linton
  • Patent number: 7867436
    Abstract: A process for recycling composite materials includes the steps of feeding a quantity of composite material composed of at least one polymer and aluminum into at least one first reactor; heating the composite material in a non-oxidizing environment at a temperature sufficient to volatilize the at least one polymer and form a hydrocarbon by-product and aluminum in the at least one first reactor; feeding the aluminum free of the at least one polymer into a second reactor; and heating the aluminum in a non-oxidizing environment at a temperature sufficient to melt the aluminum in the second reactor.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: January 11, 2011
    Assignee: TSL Engenharia, Manutencao e Preservacao Ambiental Ltda.
    Inventors: Roberto Nunes Szente, Milton Oscar Szente
  • Patent number: 7832343
    Abstract: A pyrolyzer has a heated inner housing that includes first and second conveyors. Preferred conveyors have independent or at least potentially independent flows of material to be pyrolyzed. All suitable conveyors are contemplated, including especially screw conveyors, or combination of screw and paddle conveyors. Both first and second conveyors can be disposed within a common lumen, with a partial divider between them. An alternative divider is also contemplated that more or less divides the inner housing into two lumens. Thus, the lumens can be entirely distinct, or can have cross-flow of gases and/or material being pyrolyzed. Heat transfer fins can be advantageously attached, extend from, or be otherwise coupled to the inner housing to assist in transfer of heat into the lumen(s) of the inner housing.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: November 16, 2010
    Assignee: International Environmental Solutions Corporation
    Inventors: William Walker, Karen Meyer Bertram
  • Patent number: 7798077
    Abstract: A pyrolysis oven configured for vertical conveyance of material for incineration. The oven makes use of gravity and multiple plates to control the movement of material through the oven chamber. The plates and oven interior are heated in a low oxygen, pressurized environment to effect the decomposition of material as it freefalls down the chamber and makes contact with heated plates. The configuration and angle of declination of plates determines the freefall rate and retention time within the incinerating environment. The decomposition produces char and gas resultants, each of which are carried off through separate exits configured in the oven. The oven may be used as part of a waste management system in connection with a thermal oxidation chamber for the treatment of volatile organic compound gases that are a by-product of the pyrolytic process.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: September 21, 2010
    Assignee: Simeken, Inc.
    Inventors: Michael W. Gehring, William Sweet
  • Patent number: 6276286
    Abstract: A compression device for feeding a waste material to a reactor includes a waste material feed assembly having a hopper, a supply tube and a compression tube. Each of the supply and compression tubes includes feed-inlet and feed-outlet ends. A feed-discharge valve assembly is located between the feed-outlet end of the compression tube and the reactor. A feed auger-screw extends axially in the supply tube between the feed-inlet and feed-outlet ends thereof. A compression auger-screw extends axially in the compression tube between the feed-inlet and feed-outlet ends thereof. The compression tube is sloped downwardly towards the reactor to drain fluid from the waste material to the reactor and is oriented at generally right angle to the supply tube such that the feed-outlet end of the supply tube is adjacent to the feed-inlet end of the compression tube.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: August 21, 2001
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Paul M. Williams, Kenneth M. Faller, Edward J. Bauer
  • Patent number: 6202573
    Abstract: A new apparatus and process for the removal of carbon fly ash, whereby carbon removal occurs through oxidation. The ignition of the carbon is accomplished by bulk heating and impingement of a suspended bed of fly ash by a heated oxidizing gas stream, and the desired level of carbon burnout is accomplished in a single chamber apparatus by maintaining combustion conditions. A substantial amount of the carbon removal may occur in the chamber in an environment that maintains temperature and oxygen levels lower than that required for carbon ignition. In one preferred embodiment of the invention, the carbon ignition and burnout may be performed in a single chamber by maintaining zones of varying temperature and oxygen level.
    Type: Grant
    Filed: December 18, 1997
    Date of Patent: March 20, 2001
    Assignee: U.S. Scientific, L.L.C.
    Inventor: Alan Bachik
  • Patent number: 6189463
    Abstract: Farm animal biomass, such as the waste and shredded carcasses of poultry and hogs, and/or animal bedding, is incinerated by being delivered to the inlet of a duct. During a processing period the biomass is heated uniformly to a temperature while advanced through the duct by a feed screw without sufficient oxygen to support combustion. The temperature and processing time are sufficient for partially carbonizing the biomass into combustible gas and partially carbonized char. The char is discharged to a first combustion chamber to be combusted and converted to ash. The combustible gas is discharged to a second combustion chamber to be combusted within hot porous cylindrical ceramic combustors. A portion of the duct passes through the second combustion chamber in order to supply heat for partially carbonizing the biomass. Additional heat is provided by passing hot air through the feed screw. That hot air is discharged from the feed screw and supplied to the combustion chambers to support combustion therein.
    Type: Grant
    Filed: May 12, 1998
    Date of Patent: February 20, 2001
    Assignee: General Technology, Inc.
    Inventors: Sung C. Ling, Hsien P. Pao
  • 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: 5944960
    Abstract: The carbonizing furnace of the present invention is capable of effectively making a large amount of carbides and reducing manufacturing cost and maintenance cost. The carbonizing furnace includes a furnace proper being formed into a cylindrical shape, the furnace proper having a first end section, to which a combustible raw material is supplied, and a second end section, from which a carbide is discharged; a spiral member for conveying the raw material from the first end section to the second end thereof; and a burner for burning the raw material to make the carbide, the burner burns the raw material in the second end section whereby the raw material is carbonized therein, wherein a surface of the raw material is coated with an inorganic binder.
    Type: Grant
    Filed: April 7, 1998
    Date of Patent: August 31, 1999
    Assignees: Kabushiki Kaisha Nakata Giken, Kabushiki Kaisha Yasuda Seisakusho
    Inventors: Kunii Nakata, Tsutomu Abe
  • Patent number: 5927215
    Abstract: A preheater in an incineration system consists of: a first opening through which refuse is input; a second opening which is formed under the first opening and communicates with an incinerator; a heat flow passageway which is formed between the first and second openings, and passes the heat generated by the incinerator; and a receiving unit between the two openings which rotates the refuse in the heat flow passageway.
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: July 27, 1999
    Assignee: Yaichiro Moriguchi
    Inventor: Yaichiro Moriguchi
  • Patent number: 5904105
    Abstract: A device for combustion of moist fuel includes a combustion chamber with a moving fire grate disposed at a bottom portion thereof and a drum dryer located within the combustion chamber above the fire grate. The dryer drum rotates and includes therein an involuted drum in communication with a feeding apparatus external to the combustion chamber. The feeding apparatus transports fuel from a bin to the involuted drum. As the drum dryer rotates the fuel therein moves toward an end thereof and is dried by the heat of the combustion chamber. From an end of the drum dryer, the dried fuel falls onto the fire grate and is burned.
    Type: Grant
    Filed: November 5, 1996
    Date of Patent: May 18, 1999
    Inventor: Matti Pappinen
  • 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: 5846072
    Abstract: The present invention is directed to an indirect-fired, stationary tube, gas/solids or solids/solids, full ceramic pyroprocessing furnace-reactor that uses heat-resistant conveyors to propel solids through the stationary tube.
    Type: Grant
    Filed: May 14, 1996
    Date of Patent: December 8, 1998
    Assignee: Merichem Company
    Inventor: H. Earl Willis
  • Patent number: 5823123
    Abstract: In a combustion system for particulate fuel including a combustion chamber with an opening at the base of the combustion chamber and a vertical discharge duct pushing the particulate fuel through the opening there is provided a hopper spaced from the combustion chamber and a transportation duct for carrying the particulate fuel from hopper to the discharge duct. In the transportation duct there is provided an auger shaft with a first long auger flight rotated to carry the material from the hopper to the discharge duct. A second shorter flight is arranged on a side of the discharge duct opposite to the hopper in a short tube portion and is rotated in the direction to feed the material back toward the discharge duct. The two flight portions cooperate in pushing the material into the vertical discharge duct as the shaft of the flight is rotated.
    Type: Grant
    Filed: July 25, 1996
    Date of Patent: October 20, 1998
    Assignee: Decker Mfg.
    Inventor: Clarence Waldner
  • Patent number: 5797333
    Abstract: An improved augering device and an accessible ash and pellet fines collection drawer which function together as a unique combination to remove pellet fines from a wood pellet burning stove, wherein the augering device has a screw mounted in a barrel formed by a tubular wall which also provides the pellet outlet to the firebox. Sieving apertures are formed through the tubular wall and are of a size particularly suited for the sieving of fines from the pellet fuel. The ash and fines collection drawer is adapted for positioning below the apertures in a non-fired portion of the stove, and an access opening is provided through a wall portion of the stove for insertion and removal of the drawer with respect to the stove.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: August 25, 1998
    Inventor: Carroll G. Hensley
  • 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 400.degree. C., preferably from 400.degree.-600.degree. 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: 5749307
    Abstract: There are provided a pretreatment facility (1) and a incineration/melting facility (2). In the incineration/melting facility, an incineration chamber (3) and a melting chamber (5) are integrally formed through a partition wall (7) so that incineration residue can be continuously transferred. Fine crushed material finely crushed by the pretreatment facility (1) is supplied as fuel to a burner (4). This enables it to obtain melting heat source from waste, and to efficiently treat the waste at a low cost by directly superheating and melting non-cooled incineration residue from the incineration chamber (3).
    Type: Grant
    Filed: January 24, 1997
    Date of Patent: May 12, 1998
    Assignee: Hitachi Zosen Corporation
    Inventors: Noboru Okigami, Yoshitoshi Sekiguchi, Kunio Sasaki, Hideo Shimotani, Masaharu Terashima
  • Patent number: 5743196
    Abstract: A mobile waste incinerator has a moving vehicle having an engine with an exhaust gas system, a receiving chamber arranged to receive waste to be incinerated and to preliminarily heat the waste, the receiving chamber being connected with the exhaust system so as to receive the exhaust gases for preliminary heating of the waste, a preparation chamber connected with the receiving chamber for receiving the waste heated in the receiving chamber and provided with means for reducing a size of the wastes, the preparation chamber also having means for injecting fuel, an incineration chamber connected with the preparation chamber and provided with means for mixing the fuel with air and igniting a mixture, the incineration chamber being connected with the preparation chamber so that hot gases from the incineration chamber are supplied into the preparation chamber, means for connecting the chambers with one another and closing chambers from one another, and means for discharging the wastes from the incineration chamber.
    Type: Grant
    Filed: September 3, 1996
    Date of Patent: April 28, 1998
    Inventors: Vladimir Beryozkin, Alexander Rudshteyn
  • 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: 5727483
    Abstract: A rotary incinerator for disposal of industrial waste is provided. The incinerator is slopedly and rotatably disposed to a slant support and has a plurality of spirally arranged tubular conveying ribs on entire inner periphery for squeezedly transmitting the incinerating waste from the lower portion to an exit in the tapered upper end so that the waste is stirred while incinerating and the slag and ash are automatically discharged via the exit, a combustion system worked together with a ventilation system at a lower end for supplying the flame and the fresh air into the incinerator, a drive system for driving the incinerator to rotate and a control device for controlling the operation of the above recited elements. The improvement is characterized in safe and rapid incineration of the industrial waste, therefore, economical.
    Type: Grant
    Filed: February 25, 1997
    Date of Patent: March 17, 1998
    Inventors: Kang-Shin Chen, Chung-Hsing Wu
  • Patent number: 5725738
    Abstract: A method and apparatus for producing wood charcoal by pyrolysis of wood products or vegetable biomasses in general, the method including the steps of: loading the wood products, or vegetable biomasses in general, onto transport trolleys; introducing the trolleys, which contain the wood products, in a treatment tunnel wherein a pyrolysis chamber is formed; indirectly heating the wood products inside the pyrolysis chamber until pyrolysis of the wood products is obtained, with continuous extraction, from the pyrolysis chamber, of the gas generated by the pyrolysis process; and extracting the trolleys from the tunnel to unload from the trolleys the charcoal that constitutes the residue of the pyrolysis of the wood products.
    Type: Grant
    Filed: February 13, 1996
    Date of Patent: March 10, 1998
    Inventors: Osvaldo Brioni, Dario Buizza
  • Patent number: 5720232
    Abstract: Discarded rubber tires for reclamation and recovery of the constituents therein and/or environmentally safe disposal are transferred from a pan feeder system into a hopper and transferred by an auger into a pyrolysis chamber. The pan feeder system excludes air or oxygen from passing through the hopper and auger into the pyrolysis chamber. Tire pieces from the pan feeder system are transferred by an auger through the pyrolysis chamber which is heated to a temperature between 350.degree. and 650.degree. F. The pyrolysis chamber includes a vapor recovery system for removing the vapors and maintaining a vacuum in the pyrolysis chamber. The vapors are withdrawn through a heat exchanger and into a liquid/gas separator where the condensed liquids are removed and the gas is recycled for fuel or other disposition. The solid residue from the tire pyrolysis is transferred by a closed auger to a closed bin.
    Type: Grant
    Filed: July 10, 1996
    Date of Patent: February 24, 1998
    Inventor: William R. Meador
  • Patent number: 5711235
    Abstract: A conveyor for waste has a waste feed shaft which is laterally connected to a horizontally divided conveyor channel. A screw conveyor being drivable by a motor is located in the longitudinal direction of the conveyor channel. The conveyor channel opens into a housing, in particular into a pyrolysis reactor, which by way of example is operated in conjunction with a low-temperature carbonization combustion process. In order to easily eliminate blockages of the screw conveyor, a unit formed of the screw conveyor and the conveyor channel is disconnectably secured to the housing and is removable from the housing through the use of a traveling mounting. A method for inspecting the contents of a conveyor channel receiving waste and discharging into a housing, especially a pyrolysis reactor, includes disconnecting the conveyor channel from the housing, driving the conveyor channel away with a traveling mounting, and opening the conveyor channel.
    Type: Grant
    Filed: February 20, 1996
    Date of Patent: January 27, 1998
    Assignee: Siemens Aktiengesellschaft
    Inventors: Karl May, Hartmut Herm, Karlheinz Unverzagt
  • Patent number: 5697168
    Abstract: Single or multi-screw indirect-heating screw conveyor desorbers having a heating gas guide enclosed by the screw shaft wall (single-wall screw shafts) or located between a screw shaft wall and an internal chamber wall (double-walled screw shafts). Predetermined amounts of cooling and diluting fluid may be added to a heating gas stream to control the maximum temperature thereof. Screw shaft support bearings and rotary drive components may be cooled, and conveyor wall and/or screw shaft surfaces (e.g.. screw flights and interflight surfaces) may be automatically cleaned during screw shaft rotation by hardened bits and/or breaker devices. Cleaning operations may also involve the interaction of two counter-rotating conveyor screw shafts having mutually interleaved and opposite-handed external flights.
    Type: Grant
    Filed: August 8, 1994
    Date of Patent: December 16, 1997
    Assignee: Separation and Recovery Systems, Inc.
    Inventors: Pierre Matthys, Philippe J. Matthys, Robert A. Shelden, Felix G. Marcelino, Michael Katko
  • Patent number: 5680821
    Abstract: A method and apparatus for safely conveying hazardous solid waste material to a waste processing system; for enhancing its subsequent combustion, in the case of an incinerator; and for reducing the size and duration of a moisture plume created by water vapor in the gases exiting such combustion process. The waste may be inside boxes, bags, or other containers, or may be in loose bulk form. The waste is dropped into a hopper. The hopper lid is of a design to offer safety from personal exposure to the waste and from any size reduction equipment, such as a shredder, and/or conveying machinery that might be at the bottom of the combustion chamber in the case of an incinerator. An air draft is hopper.
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: October 28, 1997
    Assignee: Advanced Envirotech Systems, Inc.
    Inventors: Frank Wright, Matthew Fleeger
  • Patent number: 5680824
    Abstract: A process for burning solids on a sliding fire grate system where each of the combustion control criteria are measured and controlled individually for each grate plate comprising the grate system.
    Type: Grant
    Filed: December 6, 1995
    Date of Patent: October 28, 1997
    Assignee: Techform Engineering AG
    Inventors: Andreas Kemter, Thomas Nikolaus, Jakob Stiefel
  • Patent number: 5678494
    Abstract: A biomass-fueled furnace for residential or institutional space and hot water heating. Wood chips, the preferred fuel, are purchased "green and/or wet" and are stored in a dryer/storage assembly which uses waste clean exhaust gases produced by the furnace to dry them. Wood chips are fed via gravity to the primary combustion chamber where, via pyrolysis, they are burned. A thimble combustor eliminates radiant heat loss from the primary pyrolysis zone, allowing stable pyrolysis at low burning rates. A second combustion chamber fed with pre-heated air completely oxidizes pyrolysis gases. This furnace is capable of operating continuously at extremely low fuel consumption rates so that heat release can be regulated by thermostat in the same manner as conventional gas and oil fired furnaces. A combination of fuel drying plus secondary air preheating by the secondary flame allows stable operation at extremely low or "idle" fuel rates.
    Type: Grant
    Filed: March 22, 1995
    Date of Patent: October 21, 1997
    Inventor: Gael Ulrich
  • Patent number: 5673636
    Abstract: A process wherein an incineration grate is tempered by a medium that flows therethrough. The grate has a number of hollow plates made of sheet metal. Each plate lies on the next underlying plate. A connection pipe is arranged on one side of each plate and a discharge pipe is arranged on the other side of each plate for the flowing medium. The individual plates are crossed by a plurality of tubular elements which open on the top side of the plates. Primary air is supplied to the materials to be incinerated through the tubular elements. Primary air supply is individually dosed to each tubular element.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: October 7, 1997
    Assignee: Doikos Investments Ltd.
    Inventor: Jakob Stiefel
  • Patent number: 5671687
    Abstract: An incinerator comprises a feeding plate, a first combustion chamber, a second combustion chamber, a curved duct, an air exhausting device, a water screen device, and a water tank. The feeding plate is provided on the underside thereof with a vibrating device for causing the feeding plate to vibrate so as to move trash gradually into the first combustion chamber in which trash is incinerated to produce ash and exhaust fume which is then burned completely in the second combustion chamber. When the exhaust fume is passed through the water screen located in the curved duct, ash contained in the exhaust fume is washed away and deposited in the water tank which is provided therein with a device for removing ash that is deposited in the water tank.
    Type: Grant
    Filed: June 16, 1995
    Date of Patent: September 30, 1997
    Inventor: Chwan Yuh Chen
  • Patent number: 5655465
    Abstract: Toxic wastes and other contaminants are removed from soil which is fed through a passage in an agitating means into a retort (10, 110) where the soil is agitated and brought into contact with the retort walls (11, 111, 111A) (at a temperature preferably above 500.degree. C.) to cause the toxic wastes or contaminates to be desorbed. The "off-gases" from the soil may be mixed with air/fuel in a combustion chamber (31, 131), to heat the retort; may be burnt in a secondary burner (40) to preheat and/or dry the soil feed; or be condensed in a condenser (41) and stored.
    Type: Grant
    Filed: July 27, 1995
    Date of Patent: August 12, 1997
    Assignees: Tox Free Systems, Inc., Tox Free Limited
    Inventor: Struan Glen Robertson
  • Patent number: 5653183
    Abstract: A system for pyrolysis of hydrocarbon constituents of waste material including a treatment unit featuring a retort with a ellipsoidal cross-section forming a first retort half and a second retort half, the material to be treated being selectively deposited in only one half of the retort at a time during any given period of system operation, to avoid abrasion and wear of the half not in use, thus effectively doubling the life of the retort component. Another feature of a treatment unit according to the invention is a heat reclamation arrangement that introduces gases that have first been combusted to supply heat energy to the retort through a conduit directly into the interior of the retort, to improve the efficiency with which pyrolysis takes place. Further, the treatment unit has an exhaust and cleaning arrangement to render gases produced during pyrolysis substantially free of pollutants such that the gases can be vented to the atmosphere.
    Type: Grant
    Filed: September 22, 1994
    Date of Patent: August 5, 1997
    Assignee: Balboa Pacific Corporation
    Inventors: Andrew H. Hansen, William C. Walker
  • Patent number: 5647288
    Abstract: In a scrap conveyor for feeding a scrap to a processing furnace such as an arc furnace, etc, while pre-heating the scrap by an exhaust gas from the processing furnace, the periphery of the scrap conveyor is covered with a gas seal cover, a flue is disposed above the scrap conveyed, an exhaust gas passage portion is disposed below the scrap conveyor, and an exhaust gas suction duct opening to the exhaust gas passage portion through an exhaust gas suction space is disposed. In the conveyor, an exhaust gas flow passage for allowing the exhaust gas inside the flue to pass through the scrap from its surface layer to its lower layer is formed inside the layer of the scrap, so that pre-heating of the scrap can be efficiently effected throughout the whole layer of the scrap.
    Type: Grant
    Filed: March 8, 1995
    Date of Patent: July 15, 1997
    Assignee: Nippon Steel Corporation
    Inventors: Hiroshige Matsumoto, Makoto Takahashi, Hitoshi Kuroda
  • Patent number: 5636580
    Abstract: A pyrolysis system is provided for use in the pyrolytic distillation of various feedstock materials, such system including an elongate reaction chamber with an upstream end, a downstream end, an infeed port near the upstream end and a discharge port near the downstream end. An auger is disposed in the reaction chamber to convey feedstock from the infeed port to the discharge port through the reaction chamber. In one embodiment, the auger includes a reverse section downstream from the discharge port to create an accumulation zone. An input airlock coupled to the reaction chamber near the upstream end delivers charges of feedstock through the input port into the reaction chamber and an output airlock coupled to the discharge port of the reaction chamber receives therefrom pyrolyzed material. Heat is supplied by a furnace disposed around the reaction chamber to supply heat thereto.
    Type: Grant
    Filed: November 22, 1995
    Date of Patent: June 10, 1997
    Inventor: Douglas R. Kanis
  • Patent number: 5611290
    Abstract: A waste conveyor includes a conveyor channel. A feed shaft is connected to the conveyor channel. A worm is disposed in the longitudinal direction of the conveyor channel. The worm has a shaft with an axis. A first metal cutter is disposed at an edge of a portion of the worm and is curved relative to the axis of the shaft. A second metal cutter is disposed at a portion of the conveyor channel, is curved relative to the axis of the shaft and has a radius of curvature being greater than the radius of curvature of the first metal cutter. The two metal cutters are disposed side by side and approximately concentric to the shaft, at a predetermined rotary position of the worm.
    Type: Grant
    Filed: February 6, 1996
    Date of Patent: March 18, 1997
    Assignee: Siemens Aktiengesellschaft
    Inventors: Herbert Tratz, Karl May, Hartmut Herm, Karlheinz Unverzagt
  • Patent number: 5495812
    Abstract: An installation is provided for the deflagration of explosives. The installation includes a splinter and explosive-proof tunnel housing having open ends and receiving a deflagration reactor positioned inside the tunnel housing and having an entry passageway and entry zone, a deflagration zone and an exit zone and exit passageway. A conveyor device extends from outside the reactor and into and through and out of the reactor and includes a plurality of carriers movable along the conveyor device for receiving and transporting explosives into and through the entry zone and into the reactor zone for ignition and burning of the explosives in the reactor zone. Each of the carriers includes a device for closing in substantially air-tight manner the entry passage and the exit passage as the carrier moves through the reactor. Devices cooperate with the device for closing the entry passageway and the exit passageway for allowing a controllable residual airflow through the reactor.
    Type: Grant
    Filed: November 4, 1993
    Date of Patent: March 5, 1996
    Assignee: Bowas-Induplan Chemie Ges.m.b.H.
    Inventor: Walter Schulze