Rotary Patents (Class 110/275)
  • Patent number: 10563921
    Abstract: A cooler (1) for cooling hot bulk goods (17) preferably iron ore sinter: The cooler has a grate surface (16) for holding the hot bulk goods (17) to be treated to reduce the dust emissions and at the same time to also enable maintenance measures on the cooler (1). Covers are located in the region of the feed point (2) and the removal point (3). The device herein provides an additional boundary, which prevents the removal of dust particles of size over 150 ?m. The boundary is a stationary first wall (12) and a stationary second wall (11) and the boundary extends over a partial segment, and preferably over the entire region, of the uncovered grate surface (16). A supporting structure (18) is provided, to which the first wall (11) and the second wall (12) are fastened.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: February 18, 2020
    Inventors: Michaela Boeberl, Stephan Hattinger, Stefan Hoetzinger, Stefan List
  • Patent number: 9810424
    Abstract: System for cleaning the burner and confining fuel in solid-fuel boilers of the type that consist of one plate, one supply device, at least one ash discharging device. The plate is mobile and has means to rotate with respect to the supply device and/or to each ash discharging device; each ash discharging device is fixed and has at least one blade with means to guide it at will on the plate occupying at least part of its perimeter. The blades of each ash discharging device are increased in height and occupy the entire perimeter of the plate, all of them delimiting, in conjunction with the plate and in an initial position where they act as side slats, a perimetrally closed container to confine a larger quantity of solid fuel on the plate without varying its size.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: November 7, 2017
    Inventor: Camilo Perez Corral
  • Patent number: 9790443
    Abstract: The present invention relates to a vertical pyrolysis reactor, including a reactor shell, a feeding device, a biomass gas outlet on the top of the reactor, an ash discharging device on the bottom of the reactor, and a grate inside the reactor. The feeding device is located on the bottom of the reactor, and an outlet of the feeding device is located in a central region of the bottom in the reactor for uniform material distribution. A slag breaking device is mounted in the pyrolysis reactor, forming an organic combination with the rotating grate. The output is adjustable through the operating speed of the grate. Precise control of a pyrolysis reaction is realized by controlling the feeding speed, discharging speed, material bed thickness, inlet air volume, inlet air distribution, reaction temperature, etc. Biomass having a size up to around 10 cm can be processed effectively and continuously due to the position design of the feeding device in conjunction with the use of the slag breaking device.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: October 17, 2017
    Assignee: Suzhou GreenGen Tech Energy Inc.
    Inventors: Maopei Cui, Huiyan Lv, Linjun Zhu
  • Patent number: 9016215
    Abstract: The invention relates to solid fuel units having a fuel supply chamber wherein the fuel to be sent for combustion to the combustion region found in the body is placed and the feed mechanism carrying the solid fuel found in the chamber forward. It is characterized in that it includes a main burning block having a fuel and air cell connected to the solid fuel supply chamber and air outlet vents formed on the external wall surface. A preventive surface is positioned on the main burning block external wall surface in a way that it would form a closed volume in a certain distance.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: April 28, 2015
    Inventor: Senol Faik Özyaman
  • 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
  • Patent number: 8820250
    Abstract: A moving distribution furnace chute for use with a furnace has a tube (3) for distribution of material, the tube having a longitudinal axis, an open inlet end (8) and an open outlet end (9). The tube further has a plurality of vanes (14) mounted on an inner surface of the tube, the vanes having a length extending in a direction having a component along the axis (15) and a breadth extending in a direction having a component radially inwards towards the axis.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: September 2, 2014
    Assignee: Siemens Vai Metals Technologies Ltd.
    Inventors: Ian Mervyn Craig, Jeremy Fletcher, Gareth Kaps, Neil Millington
  • Patent number: 8591608
    Abstract: A gasifier includes a combustion zone where a gas is introduced and fuel is combusted and at least one sensor for measuring a predetermined condition in the gasifier. A grate subsystem contains the fuel and includes at least one grinding mechanism. A controller is responsive to the at least one sensor and controls the grinding mechanism by activating the grinding mechanism if the predetermined condition exists to reduce the collection of non-fuel products on the grate subsystem.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: November 26, 2013
    Assignee: MSW Power Corporation
    Inventors: Matthew Young, Steven Anthony, Stephen Armstrong, Steven Chase
  • Patent number: 8550018
    Abstract: A stirring control method is adapted for a combustion apparatus which includes a furnace for burning fuel material, and a stirring member rotatably disposed in the furnace for stirring the fuel material and ash resulting from burning of the fuel material. The stirring control method includes: controlling rotation of the stirring member at an initial rotational speed; determining whether a height of the fuel material reaches an upper detection range; generating an indication when the height of the fuel material reaches the upper detection range; determining whether the height of the fuel material reaches a lower detection range when the height of the fuel material does not reach the upper detection range; and controlling rotation of the stirring member at a rotational speed higher than the initial rotational speed when the height of the fuel material reaches the lower detection range.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: October 8, 2013
    Assignee: Suncue Company Ltd.
    Inventor: Jung-Lang Lin
  • Patent number: 7976593
    Abstract: A gasifier and gasifier system based on the gasifier, which contains as a major component, a novel feed system for feeding organic materials into the burn pile of the gasifier. The gasifier feed system is a horizontal auger driven feed system that feeds directly through a ceramic elbow into the furnace without having to auger the feed through significant vertical elevations.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: July 12, 2011
    Assignee: Heat Transfer International, LLC
    Inventor: Robert G. Graham
  • Publication number: 20070251436
    Abstract: A method of converting animal litter biomass into useful energy includes the steps of both combusting and pyrolising the biomass, of mixing the resultant combustible gas from the pyrolysis step with the gases from the combustion step, of igniting the mixture of gases ad and feeding the hot mixture of gases to a thermal recuperator; and apparatus therefor.
    Type: Application
    Filed: April 26, 2007
    Publication date: November 1, 2007
    Inventors: Harris Beausoleil, Louis Riverin
  • Patent number: 7032526
    Abstract: The present invention can provide a method for combustion treatment capable of efficiently treating combustible waste, and a combustion treatment apparatus capable of realizing such a method. The present invention can further provide a method for combustion treatment capable of efficiently treating even combustible waste containing a generation source of a volatile hazardous component, and a combustion treatment apparatus capable of realizing this. Furthermore, the present invention can provide a method for combustion treatment capable of efficiently recovering and making effective use of the heat of an exhaust gas discharged during a treatment of combustible waste, and a combustion treatment apparatus capable of realizing this. The aforementioned method for combustion treatment is a method for treating combustible waste, in which the combustible waste is subjected to combustion treatment in a rotary hearth furnace.
    Type: Grant
    Filed: August 20, 2002
    Date of Patent: April 25, 2006
    Assignee: Kabushiki Kaisha Kobe Seiko Sho
    Inventors: Masahiko Tetsumoto, Hiroshi Sugitatsu
  • Patent number: 6849160
    Abstract: An apparatus and method are for the pyrolysis of waste. The aparatus has a rotating cell formed of a cylinder in combination with a truncated cone rotating on the same axis. The apparatus also has a hopper for charging the waste at one end of the cylinder, an ash box at the other end of the cylinder, a gas recuperator, and a retaining threshold between the cylinder and the truncated cone. A region of intimate contact of the waste with itself is created, whereby the waste is converted into coke which is used as fuel in the pyrolysis of the waste.
    Type: Grant
    Filed: October 15, 1997
    Date of Patent: February 1, 2005
    Assignee: Sanifa
    Inventor: Louis Rousseau
  • Patent number: 6772701
    Abstract: An incinerator having incinerator chambers (3) of cylinder inner shape set at equal distance from rotary axle (t1) in an outer casing (1) provided with thermal insulation (2) rotated around (t1) are realized as incinerator units. The longitudinal axle of the incinerator chambers (3) is parallel with the rotary axle of the outer casing (1). Inside the incinerator chambers (3) incinerator carriages (21) are rolling on a roller path (30) for placing of the body to be incinerated. A door (18) ensuring placing of bodies is put on one of the front walls perpendicular to the rotary axle (t1) of the casing (1). On the opposite wall the incinerator is provided with a blast inlet (15) and a hot air feed pipe (9). One or more burners (13) are placed within the inside of the casing (1).
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: August 10, 2004
    Inventor: Gabor Földes
  • Patent number: 6221329
    Abstract: A process and system for the recovery of desirable constituent materials from vehicle tire pieces through pyrolysis. The system includes a pyrolysis section that is divided into a plurality of individual heating zones. Each of the heating zones is heated to a distinct operating temperature that is independent from the operating temperature of the remaining heating zones. Vehicle tire pieces are fed into the infeed end of the pyrolysis section by a rotatable feed cylinder that includes a screw-like flight extending from the inner wall of the feed cylinder. As the feed cylinder rotates, the flight directs the supply of vehicle tire pieces into the infeed end of the pyrolysis section. The pyrolysis section includes a rotary kiln that is divided into the plurality of heating zones.
    Type: Grant
    Filed: March 9, 1999
    Date of Patent: April 24, 2001
    Assignee: Svedala Industries, Inc.
    Inventors: Bobby P. Faulkner, Robert J. Unterweger, Roy W. Hansen
  • Patent number: 5746142
    Abstract: A low-pollutant system for waste materials treatment includes a process chamber for converting organic components of the waste materials into a flammable gas and a two-stage vortex burning chamber for complete combustion of the flammable gas. The vortex burning chamber includes a first substantially-horizontal combustion chamber and a second substantially-vertical combustion chamber disposed at a right angle to each other and communicating therebetween. The first combustion chamber has an inlet portion for receiving the flammable combustion gas from the gas generator means for injecting primary air into the first combustion chamber, thereby forming a mixture of air and the flammable gas and thereby igniting the mixture for partial oxidation thereof.
    Type: Grant
    Filed: November 13, 1996
    Date of Patent: May 5, 1998
    Assignees: Leslie Technologies, Inc., Gruntec LTDA
    Inventors: Markus Jennebach, Joao Augusto Birkhan
  • 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: 5448957
    Abstract: A cylinder grate for incinerators, especially garbage incinerators, with hollow grate cylinders (1). The cylinders are positioned separated and axially parallel along a slanted plane (3). There is a gap between each pair of cylinders and accommodating strippers (5). The strippers are secured to stripper holders (6) below the gap. Components (11) swing back and forth below the strippers and are resiliently forced against the overall length of the cylinder.
    Type: Grant
    Filed: April 22, 1994
    Date of Patent: September 12, 1995
    Assignee: Deutschen Babcock Energie- und Umwelttechnik AG
    Inventors: Dieter Goldammer, Heinz-Peter Hasselmann
  • Patent number: 5042401
    Abstract: A roller grate incinerator cooperatively associated with a waste heat boiler, wherein a plurality of cylindrical shaped water cooled roller grates are disposed on an incline to form a undulating water cooled surface upon which a bed waste is laid and burned as the roller grates turn moving the burning waste along the undulating surface, which has a plurality of perforations through which combustion air is supplied to the underside of the bed to facilitate burning of the waste and the flow of hot gases through the waste heat boiler.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: August 27, 1991
    Assignee: Westinghouse Electric Corp.
    Inventor: Bozorg Ettehadieh
  • Patent number: 5027719
    Abstract: The present invention discloses a rotary grate for a solid fuel fired furnace which allows ash, cinders and clinkers to be removed from the burning fuel mass, without reducing or stopping the combustion process. A plurality of parallel water cooled rolls supports the burning fuel mass. The rolls are grouped into pairs of rolls, each pair of rolls having a drive roll and a driven roll. Each pair of rolls are geared together such that rotation of the drive roll simultaneously rotates the driven roll. Each roll has a plurality of protrusions about the circumference thereof, spaced down the length of the roll. The protrusions pass, during rotation of the rolls, the protrusions on adjacent rolls in non-contacting relationship to crush any cinders, clinkers or other tramp material. This action allows ash and the crushed material to pass between the rolls to an ash collection area beneath the rolls. Each of the drive rolls are rotated by a reversible drive mechanism which incrementally rotates the rolls.
    Type: Grant
    Filed: February 28, 1990
    Date of Patent: July 2, 1991
    Assignee: Wellons, Inc.
    Inventor: Mark R. Chenard
  • Patent number: 4708069
    Abstract: A heating appliance which burns solid fuel has a bottom feed to a furnace vessel, conveniently by means of an auger. The furnace vessel is arranged to be driven in rotation which assists keeping a uniformly distributed fire in the furnace vessel, and makes possible the discharge of ash overflowing from the top of the vessel through an airlock system. Preferably, a water jacket surrounds the furnace vessel and a poker is moved in the furnace vessel as it rotates. Combustion air can be blown or sucked in by a fan. The heating appliance can be a domestic cooker, also heating water for central heating.
    Type: Grant
    Filed: May 27, 1986
    Date of Patent: November 24, 1987
    Inventor: Archibald W. Kidd
  • Patent number: 4633849
    Abstract: The rotary stoker has a fuel supporting grate which is divided into a central stationary section and an outer rotating ring. Fuel is fed to the center of the stationary section. The outer ring is downwardly and centrally inclined, as an inverted cone, and lies partially beneath the stationary section to form an annular trough of V-shaped cross section. Openings or spaces separate the stationary section and outer ring, in the bottom of the trough, for continuous ash removal into a hopper as the ring rotates. Air may be admitted through the under sides of both sections of the grate from separately controlled air plenums. Air may also be admitted above the grate from a third, separately controlled air plenum.
    Type: Grant
    Filed: November 21, 1983
    Date of Patent: January 6, 1987
    Assignee: Detroit Stoker Company
    Inventor: Harold L. Knox
  • Patent number: 4507079
    Abstract: Apparatus for discharging solids from a shaft furnace comprises a lock chamber structure, the interior of which is connected to the shaft furnace by a conveyor duct, and a rotor, which is rotatably mounted in the interior of the lock chamber structure and adapted to be driven and arranged to receive solids from the furnace and seals the inlet of the lock chamber from the outlet of the lock chamber. To permit a continuous discharge of solids from the furnace without an escape of gas from the furnace, the rotor consists of a cellular wheel, which has cell-defining walls in a star-shaped configuration. The conveyor duct is connected to a source of a compressed blocking gas. An exhaust gas duct communicates with the interior of the lock chamber structure adjacent to the conveying portion of the cellular wheel between the inlet and the outlet of the cellular wheel.
    Type: Grant
    Filed: May 10, 1983
    Date of Patent: March 26, 1985
    Assignee: Voest-Alpine Aktiengesellschaft
    Inventor: Martin Nagl
  • Patent number: 4442782
    Abstract: 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.
    Type: Grant
    Filed: July 16, 1982
    Date of Patent: April 17, 1984
    Assignee: Lurgi Corporation
    Inventors: Frank Lilley, Clarence S. Rankin, deceased
  • Patent number: 4437452
    Abstract: A rotary continuous ash discharge stoker having a circular grate which is designed to support burning fuel as it distributes the fuel from the feedpoint over the entire grate, and at the same time provides for the controlled admission of air for combustion of the fuel and also automatically removes from the furnace the remaining ash. The upper grate surface consists of two zones, a central stationary section and an outer rotating section or ring. The central section is inclined and is the main air admitting zone. The outer rotating ring serves to distribute the fuel in the furnace with the aid of a stationary spreader arm, admits the air necessary to complete combustion of the fuel and removes the burned out ash from the furnace with the aid of a stationary ash plow.
    Type: Grant
    Filed: April 11, 1983
    Date of Patent: March 20, 1984
    Assignee: Detroit Stoker Company
    Inventor: David C. Reschly
  • Patent number: 4430948
    Abstract: A furnace having a primary heat exchange unit also providing a combustion chamber, a secondary heat exchange unit connected by an upper crossover conduit to the primary heat exchange unit, and a tertiary heat exchange unit connected by a lower V-shaped crossover conduit to the secondary heat exchange unit. A third crossover conduit connects the V-shaped crossover conduit with the primary heat exchange unit. Vibrating means are provided between the secondary and tertiary heat exchange units to vibrate the walls thereof and dislodge clinging fly ash so that it falls into the V-shaped crossover conduit for removal by the screw conveyor. A burner assembly of a furnace includes a combustion air housing carrying a circular, stationary grate with an annular valley for carrying fuel during combustion. A central opening is connected to a fuel conveyor for introduction of fuel to the grate through the lower portion of the housing.
    Type: Grant
    Filed: July 27, 1982
    Date of Patent: February 14, 1984
    Assignee: Western Heating, Inc.
    Inventors: Tony L. Schafer, Stephen A. Schafer, Gregory L. Schafer, H. Darwin Swett
  • Patent number: 4388876
    Abstract: An ash removal apparatus for a burner which produces ash moved through a discharge passage in the floor of the burner, including a circumferential ash-removing opening surrounding the grate of the burner, with the surfaces forming the opening being circumferentially progressively varied in spacing to crush and pass clinkers through the opening and out the discharge passage.
    Type: Grant
    Filed: April 6, 1981
    Date of Patent: June 21, 1983
    Assignee: Enterprises International, Inc.
    Inventor: John A. Burton
  • Patent number: 4141793
    Abstract: A horizontal circulating carbonizer comprising an annular horizontally rotatable circulating hearth disposed rotatably, a carbonizer body covering said hearth, a coal feeder equipped on the carbonizer body, a preheating zone disposed in the vicinity of said feed coal supply opening, a carbonizing zone connected to said preheating zone, a cooling zone connected to the carbonizing zone, and a discharger of cooled coke, and a process for the preparation of coke using this horizontal circulating carbonizer.
    Type: Grant
    Filed: November 22, 1976
    Date of Patent: February 27, 1979
    Assignee: Nissho-Iwai Co., Ltd.
    Inventors: Yutaka Aoki, Akira Hase, Jiro Ito, Hisomu Nagai