Having Circular Grate Patents (Class 110/287)
  • 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
  • Patent number: 8904944
    Abstract: A feed device for a granular firing product for furnaces with a minimum capacity of 1 kW, includes a conveyor screw disposed in a pipe for conveying a granular firing product. A central screw axis pipe has an outer wall with a volution mounted thereon and with the conveyor screw disposed in the pipe so that it can rotate and which is at least a quarter of the pipe diameter. The screw pipe axis has a conical shape at its tip, where a circular grating with a central circular hole and air feed openings on the outer region of the grating are horizontally disposed. The central circular hole is smaller than the diameter of the conveyor screw and a conically expanding funnel-shaped wall is guided downwardly from its edge as a sliding wall for a firing product to be conveyed. The conically expanding funnel-shaped wall runs substantially parallel to the cone of the upper end of the screw axis.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: December 9, 2014
    Assignee: Stuv S.A.
    Inventors: André Riemens, Gabriela Vetsch, Basso Salerno
  • Publication number: 20140248202
    Abstract: This invention relates to a process for incinerating NH3 in an NH3 incinerator comprising a first incineration step at controlled sub-stoichiometric incineration conditions and a second incineration step with at a greater than stoichiometric amount of oxygen, whereby a product stream is produced with reduced NO formation. The invention also relates to an NH3 incinerator.
    Type: Application
    Filed: September 7, 2012
    Publication date: September 4, 2014
    Inventors: Maarten Betlem, Sjaak Olsthoorn, Mark Van Welsen
  • 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: 8051786
    Abstract: A stoker grate for circulating a combustible material includes a stationary grate sheet support and a moveable grate sheet support fitting with prop rolls on the stationary grate sheet support. The moveable grate sheet support includes a pair of moveable grate sheet supports opposed to each other and another pair of arc-shaped moveable grate sheet supports opposed to each other to form a long annular-shaped assembled support, stationary grate sheets fitting with mounting transverse beams of the stationary grate sheet support, moveable grate sheets fitting with mounting transverse beams of the moveable grate sheet support, the moveable grate sheets and the stationary grate sheets being disposed alternatingly, and a transmission unit. The driving moveable grate sheet support is hinged to the adjacent driven moveable grate sheet support and the driven moveable grate sheet supports are hinged to each other.
    Type: Grant
    Filed: February 6, 2008
    Date of Patent: November 8, 2011
    Inventor: Chengguo Ma
  • 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: 4667606
    Abstract: The invention relates to a feed-in device for fuel in a fire-place with plane grate (5). The feed-in occurs through an opening (60) in the grate and comprises a tubular straight passageway (34), which extends upward from below to the opening (60), so that the center line of the passageway (34) forms an angle of 20.degree.-45.degree. to the surface of the grate (5) and that the opening (60) is displaced to the circumference of the grate (5).
    Type: Grant
    Filed: May 9, 1986
    Date of Patent: May 26, 1987
    Assignee: Obbola Linerboard Aktiebolag
    Inventor: Rune L. Sv/a/ rd
  • Patent number: 4537139
    Abstract: A drum-shaped grate of an incinerator includes a plurality of cylindrical drums, the grate covering of which is formed of a plurality of suspended middle grate bars which are combined in segments and arrested by fixed grate bars. The adjacent grate bars in the circular direction are suspended on bar carriers and the lateral faces of each two adjacent grate bars are spaced from each other by spacers. The surfaces of the spacers positioned between each two adjacent grate bars and abutting against each other are flat and smooth. Due to a possible relative displacement of the middle grate bars in their longitudinal direction owing to the placing of the spacers between the adjacent bars a clogging of the air slots formed between the grate bars would be prevented.
    Type: Grant
    Filed: May 3, 1984
    Date of Patent: August 27, 1985
    Assignee: Deutsche Babcock Anlagen Aktiengesellschaft
    Inventor: Anton Esser
  • Patent number: 4449462
    Abstract: A coal burning apparatus actuated by a stoker of the underfeed type includes a burner body formed of a plurality of vertically stacked rings with spaces between the rings extending horizontally to form a tuyere. A tuyere is easily made by stacking rings onto a burner base in a surrounding relationship to the stoker throat. A rotating ash ring is mounted to the exterior of the tuyere for disposing ashes outwardly beyond the periphery of the burner so that they may fall into a provided ash box. The burner air for sustaining combustion is provided to the interior of the tuyere from one of a pair of provided ports in the burner base. The alternative location of the air ports permit the air duct for providing combustion air to be extended from either end of the burner assembly.
    Type: Grant
    Filed: September 28, 1982
    Date of Patent: May 22, 1984
    Assignee: King Coal Furnace Corporation
    Inventor: Michael F. Robb
  • 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