Oxidizer Added To Region Of Incomplete Combustion Patents (Class 431/10)
  • Patent number: 11124430
    Abstract: A thin film, direct convection, evaporative apparatus, such as for treating waste water on-site at a production area or waste water processing area, relies on direct exposure of fluid to an open flame in a substantially enclosed burner unit having a burn chamber fed by an air-fuel mixing chamber and a fluid chamber, which apparatus also has gas and air trains and a metered fluid train permitting controlled fluid flow rate.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: September 21, 2021
    Assignee: AbTech Industries, Inc.
    Inventors: Shawn M Lolling, Jonathan C Warner
  • Patent number: 11060721
    Abstract: The invention relates to a burner installable to a boiler for burning a premixed air-fuel mixture, said burner comprising a frame member provided with an elongated combustion head protruding from the frame member and having what in a view from the frame member is its distal end provided with a tip plate. In said burner between a side edge of the tip plate and the plane of the tip plate is an oblique angle of incidence for directing a gas delivered forward of the tip plate away from the longitudinal center axis of the combustion head, the combustion head has its tip plate provided with a plurality of air openings extending through the tip plate and it is for cooling the tip plate that the inner tube is additionally provided with a supply of combustion air for conveying the combustion air through the tip plate's air openings.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: July 13, 2021
    Assignee: Oilon Technology Oy
    Inventors: Joonas Kattelus, Lassi Karvonen, Michele Danelon
  • Patent number: 11015804
    Abstract: The present invention is a system that utilizes high pressure gas (greater than ½ psig) to control flow rate and gas discharge velocity to enable interchangeability between a plurality of gases without having to change the gas/air mixing venturi size or air opening. A new approach is to use the available incoming higher gas pressure to the appliance then control the volumetric flow rate with the first orifice and then use a second orifice to change the velocity of discharge into the gas/air mixing venturi of the burner and therefore have adjustability of gas air mixing conditions without having to change the burner system or air flow control even when changing between very different fuel gases.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: May 25, 2021
    Assignee: Gas-Fired Products Inc.
    Inventors: Martin Brice, Stephan Richter, Eddie Wilson, Tharwat Saad
  • Patent number: 10995388
    Abstract: Uneven sintering is prevented in a sintering machine, and thus sintered ore having high strength and a high lump yield rate is manufactured. A method for manufacturing sintered ore comprising: charging sintering raw material comprising fine ore and carbon material on a circulatively moving pallet to form a raw material layer; igniting the carbon material on a surface of the raw material layer and sucking air from above the raw material layer down to below the palette so that the air is introduced into the raw material layer; and combusting the carbon material in the raw material layer to thereby manufacture sintered ore, wherein fuel gas is discharged from a nozzle at a flow speed of 40 m/s or more, the discharged fuel gas is combusted to generate combustion gas, and the combustion gas is used for igniting the carbon material.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: May 4, 2021
    Assignee: JFE STEEL CORPORATION
    Inventors: Masato Kuroiwa, Shunsuke Nonaka, Yukimasa Horikawa, Shunsuke Oura, Tetsuya Jinno
  • Patent number: 10941936
    Abstract: The present invention is a system that utilizes high pressure gas (greater than ½ psig) to control flow rate and gas discharge velocity to enable interchangeability between a plurality of gases without having to change the gas/air mixing venturi size or air opening. A new approach is to use the available incoming higher gas pressure to the appliance then control the volumetric flow rate with the first orifice and then use a second orifice to change the velocity of discharge into the gas/air mixing venturi of the burner and therefore have adjustability of gas air mixing conditions without having to change the burner system or air flow control even when changing between very different fuel gases.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: March 9, 2021
    Assignee: Gas-Fired Products Inc.
    Inventors: Martin Brice, Stephan Richter, Eddie Wilson, Tharwat Saad
  • Patent number: 10690339
    Abstract: Premixed fuel and air are emitted in a staged fashion from a burner. A header delivers premixed fuel and air to a primary stage of combustion through a first plurality of outlets in communication with the pre-mixer. The same or another header may deliver premixed fuel and air to a secondary stage of combustion through a second plurality of outlets. A tile wall is located on the tile between the first plurality of outlets and the second plurality of outlets. A candelabra piece made of metal may comprise the pre-mixer and the header. In assembly, the candelabra piece may be inserted into the burner tile.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: June 23, 2020
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Richard R. Martin, Matthew A. Martin
  • Patent number: 10641175
    Abstract: The present disclosure is directed to a panel fuel injector having a first side wall that defines a plurality of first side injection outlets and a second side wall that defines a plurality of second side injection outlets. A premix air plenum, a fuel plenum, a plurality of first side premixing channels and a plurality of second side premixing channels are defined between the first side wall and the second side wall. Each first side premixing channel is in fluid communication with the premix air plenum, the fuel plenum and a respective first side injection outlet of the plurality of first side injection outlets. Each second side premixing channel is in fluid communication with the premix air plenum, the fuel plenum and a respective second side injection outlet of the plurality of second side injection outlets.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: May 5, 2020
    Assignee: General Electric Company
    Inventors: Jonathan Dwight Berry, Michael John Hughes
  • Patent number: 10634357
    Abstract: The invention refers to a sequential combustor arrangement comprising a first burner, a first combustion chamber, a mixer for admixing a dilution gas via a dilution gas inlet to the hot gases leaving the first combustion chamber during operation, a second burner, and a second combustion chamber arranged sequentially in a fluid flow connection. The sequential combustor arrangement further includes four cooling zones with a cooling channel. During operation a cooling gas flows through the cooling channels. The disclosure further refers to a method for operating a gas turbine with such a sequential combustor arrangement.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: April 28, 2020
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Ewald Freitag, Adnan Eroglu, Michael Maurer, Peter Stuttaford
  • Patent number: 10591156
    Abstract: A burner includes: an inner gas nozzle which extends along an axis while surrounding the axis, and which is capable of supplying a furnace with an inner combustion oxygen containing gas; a fuel supply nozzle surrounding the inner gas nozzle as seen in a direction along the axis, the fuel supply nozzle being capable of supplying the furnace with a fluid mixture of a solid powder fuel and a carrier gas; an outer gas nozzle surrounding the fuel supply nozzle as seen in the direction along the axis, the outer gas nozzle being capable of supplying the furnace with an outer combustion oxygen containing gas; and a flow-velocity-ratio adjustment apparatus capable of adjusting a relative flow velocity ratio of a discharge flow velocity of the inner combustion oxygen containing gas to a discharge flow velocity of the outer combustion oxygen containing gas.
    Type: Grant
    Filed: May 30, 2016
    Date of Patent: March 17, 2020
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Kenji Kiyama, Toshimitsu Ichinose, Miki Shimogori, Toshihiko Mine, Kenji Yamamoto, Ryuichiro Tanaka, Akira Baba, Koji Kuramashi, Koutaro Fujimura, Keigo Matsumoto
  • Patent number: 10590847
    Abstract: A flue gas recirculation combustor includes a combustor chamber configured such that fuel and combustion gas are injected therein to cause combustion and having a nozzle-side end and a combustor outlet, a nozzle can connected to the nozzle-side end of the combustor chamber, a plurality of nozzles disposed in the nozzle can and configured such that an injection direction thereof is directed to a side of the combustor chamber, and a sleeve disposed in a premixing space defined between the nozzle can and the nozzle-side end of the combustor chamber, the sleeve including a recirculation pathway to recirculate combustion air from the combustor chamber to the premixing space.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: March 17, 2020
    Assignee: Doosan Heavy Industries Construction Co., Ltd
    Inventors: Hokeun Kim, Sunghyun Kim, Cheahong Choi
  • Patent number: 10539322
    Abstract: A method for determining fatigue lifetime consumption of an engine component, by defining a reference thermal load cycle, the reference thermal load cycle being characterized by a reference load cycle amplitude and a reference load cycle time, and determining a reference load cycle lifetime consumption. The method includes measuring a temperature of the engine component, determining a thermal load cycle based upon the temperature measurement, determining a load cycle amplitude, determining a load cycle time, relating the load cycle time to the reference load cycle time, thereby determining a load cycle time factor, relating the load cycle amplitude to the reference load cycle amplitude, thereby determining a load cycle amplitude factor, combining the load cycle time factor and the load cycle amplitude factor into a combined load cycle factor for determining a load cycle lifetime consumption.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: January 21, 2020
    Assignee: Ansaldo Energia Switzerland AG
    Inventors: Felipe Bolaños-Chaverri, Torsten Wind, Fernando Biagioli, Khawar Syed
  • Patent number: 10513453
    Abstract: A roof mounted oxygen-fuel burner for a glass melting furnace can produce a variable moving or sweeping flame in the furnace and can also vary the flame shape. The burner has a housing having an oxygen inlet pipe coupled to an oxygen chamber and a fuel inlet pipe coupled to a fuel feeding crossover block. The fuel feeding block feeds fuel to a nozzle fuel port while the oxygen chamber feeds a plurality of nozzle oxygen ports which oxygen port outlets are angled toward the centralized fuel port outlet. A rotating impeller over the oxygen ports has a partial opening that causes a variable moving or sweeping flame in the burner as the impeller rotates. The impeller is also raised or lowered to control the flow of oxygen to the plurality of oxygen port outlets to control the shape of the burner flame.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: December 24, 2019
    Assignee: Air Products and Chemicals, Inc.
    Inventors: James K Nabors, Jr., Abigail Nabors
  • Patent number: 10443849
    Abstract: A combustor arrangement of a gas turbine engine or power plant is disclosed, having at least one combustion chamber, at least one mixer arrangement for admixing air or gas to the hot gas flow leaving the combustion chamber. The mixer arrangement is configured to guide combustion gases in a hot gas flow path extending downstream of the combustion chamber, wherein the mixer includes a plurality of injection pipes pointing inwards from the side walls of the mixer arrangement for admixing air portions to cool at least the hot gas flow leaving combustion chamber. The mixer arrangement is applied to at least one volume of dilution air flowing from a first plenum and at least one volume of cooling air flowing from a second plenum.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: October 15, 2019
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Andrea Ciani, Dieter Rebhan
  • Patent number: 10378758
    Abstract: In a burner tip, combustion burner, and boiler, the burner tip is provided with: a mixing chamber provided at an inner portion of the tip body; a plurality of first mixed fluid jet holes of which base end portions communicate with the mixing chamber, of which front end portions open on a lateral side of the tip body, and which are placed in circumferential direction of the tip body at predetermined intervals; a fluid fuel supply passage configured to supply a fluid fuel to the mixing chamber; and an atomizing medium supply passage configured to supply an atomizing medium to the mixing chamber, thereby, combustibility is improved by facilitating the mixing of a fluid fuel and an atomizing medium and thus making the size of liquid fuel droplets smaller.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: August 13, 2019
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Kazuaki Hashiguchi, Akiyasu Okamoto, Hideyuki Hamaya
  • Patent number: 10371377
    Abstract: A burner assembly combines oxygen and fuel to produce a flame. The burner assembly includes an oxygen supply tube adapted to receive a stream of oxygen and a solid fuel conduit arranged to extend through the oxygen tube to convey a stream of fluidized, pulverized, solid fuel into a flame chamber. Oxygen flowing through the oxygen supply tube passes generally tangentially through a first set of oxygen-injection holes formed in the solid fuel conduit and off-tangentially from a second set of oxygen-injection holes formed in the solid fuel conduit and then mixes with fluidized, pulverized, solid fuel passing through the solid fuel conduit to create an oxygen-fuel mixture in a downstream portion of the solid fuel conduit. This mixture is discharged into a flame chamber and ignited in the flame chamber to produce a flame.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: August 6, 2019
    Assignee: Honeywell International Inc.
    Inventors: Curtis Taylor, Brad Patterson, Jayson Perdue
  • Patent number: 10344967
    Abstract: In a burner tip, combustion burner, and boiler, the burner tip is provided with: a mixing chamber provided at an inner portion of the tip body; a plurality of first mixed fluid jet holes of which base end portions communicate with the mixing chamber, of which front end portions open on a lateral side of the tip body, and which are placed in circumferential direction of the tip body at predetermined intervals; a fluid fuel supply passage configured to supply a fluid fuel to the mixing chamber; and an atomizing medium supply passage configured to supply an atomizing medium to the mixing chamber, thereby, combustibility is improved by facilitating the mixing of a fluid fuel and an atomizing medium and thus making the size of liquid fuel droplets smaller.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: July 9, 2019
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Kazuaki Hashiguchi, Akiyasu Okamoto, Hideyuki Hamaya
  • Patent number: 10322661
    Abstract: A mobile kitchen comprises a housing disposed atop one or more wheel axles and a plurality of appliances disposed within the housing. Each appliance is heated by combustion of a distillate fuel. One or more air channels are disposed about each of the appliances, such that each air channel substantially isolates excess heat from combustion of the distillate fuel from a workspace within the housing. One or more first air blowers are associated with the air channels, and each is adapted to force air through the air channels and vent the excess heat to the exterior of the housing. One or more second air blowers are coupled to the housing, and each second air blower is adapted to vent a predetermined volume of air from within the workspace at least once per minute.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: June 18, 2019
    Assignee: BABINGTON TECHNOLOGY, INC.
    Inventors: Robert S. Babington, Victor Worsley, Luther Barnes, Larry Viverette, Ramiro Andrade, Juan C. Lemus
  • Patent number: 10273178
    Abstract: A glassmelting furnace is provided in which the burners are elevated above the glassmelt surface and are oriented at an angle upwards relative to the glassmelt surface.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: April 30, 2019
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Osemwengie Uyi Iyoha, Hisashi Kobayashi, Euan J. Evenson
  • Patent number: 10184403
    Abstract: A fuel nozzle for a gas turbine engine. The nozzle has a body and a center axis. The body has an inner circumferential surface circumscribing a central passageway which is coaxial with the center axis. The nozzle also has air passages which extend predominantly radially inward through the body. The air passage outlets of each air passage are circumferentially spaced apart from one another along the inner circumferential surface. Each air passage conveys air through the body toward the nozzle center axis and into the central passageway. The nozzle also has fuel passages which extend through the body. Each fuel passage is disposed within the body between adjacent circumferentially spaced apart air passages and is transverse to the direction of extension of its neighboring air passages.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: January 22, 2019
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventors: Kian McCaldon, Oleg Morenko
  • Patent number: 10107492
    Abstract: A biomass-mixed, pulverized coal-fired burner is provided, capable of burning biomass fuel as auxiliary fuel in large quantities and burning only pulverized coal when the biomass fuel is not sufficiently available. The biomass-mixed, pulverized coal-fired burner includes a biomass fuel jet nozzle that extends axially along the biomass-mixed, pulverized coal-fired burner, a fuel jet nozzle that is open midway in the biomass fuel jet nozzle, a secondary air nozzle that surrounds the fuel jet nozzle, and a tertiary air nozzle that surrounds the secondary air nozzle. A pulverized coal component in a fuel stream as a mixture of the pulverized coal fuel stream and the biomass fuel stream is distributed with a higher concentration on an outer circumferential wall side and a biomass fuel component in the fuel stream is distributed inside of the pulverized coal fuel component.
    Type: Grant
    Filed: March 21, 2013
    Date of Patent: October 23, 2018
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Koji Taniguchi, Atsunori Kato, Suguru Yabara, Yutaka Tanabe
  • Patent number: 10011510
    Abstract: The claims define a submerged combustion melter comprising a submerged combustion burner (1) comprising three concentric tubes, all being closed at one end and open at the same opposite end, the internal tube (3) being connected to a source of oxygen containing gas (7), the middle tube (9) surrounding the internal tube (3) being connected to a source of fuel gas (11), and the outer tube (15) being connected to a source (19) of oxygen containing gas. The claims are also directed to a method of introducing a flame and/or combustion products into a melt from a submerged combustion burner and also directed to the use of the burner as a submerged combustion burner in a melter.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: July 3, 2018
    Inventors: Gerard Demott, Bostjan Marolt, Randy Etzkorn, David Ducarme
  • Patent number: 10001275
    Abstract: A well test burner system has a plurality of burner nozzles supported by a support structure. Each burner nozzle has an air inlet, a well product inlet and an air/well product mixture outlet. At least one of the burner nozzles is supported to pivot relative to the support structure while the burner nozzle is operating to expel air/well product mixture.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: June 19, 2018
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Trace Wayne Cody
  • Patent number: 9982885
    Abstract: Devices, methods, and systems for utilizing a burner with a combustion air driven jet pump are described herein. One burner apparatus includes a jet pump located inside a burner housing, the jet pump having a combustion air inlet that receives combustion air, a chamber to receive the combustion air from the combustion air inlet, and a tapered portion of the chamber that tapers to an outlet having a smaller diameter than the diameter of the inlet.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: May 29, 2018
    Assignee: Honeywell International Inc.
    Inventors: Curtis L. Taylor, Joseph S. F. Goh, Brad Patterson, Marek Scholler
  • Patent number: 9915479
    Abstract: A heat storage type combustion system equipped with a disk type distributor having improved sealing according to the present invention, the system includes: the distributor having a rotary distribution unit, a lower distribution unit located on the underside of the rotary distribution unit, an upper distribution unit located on the top of the rotary distribution unit, and a plurality of dumb buckles disposed equally spaced apart from each other along outer circumferential rims of the lower distribution unit and the upper distribution unit to fix the lower distribution unit and the upper distribution unit to each other. Each dumb buckle includes a left-handed screw and a right-handed screw formed on both end portions around the body thereof in such a manner as to be tightened or loosened repeatedly if necessary, and the number of dumb buckles is 4 to 12 in accordance with the sizes of the distributor.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: March 13, 2018
    Assignee: Kumho Environment Co., Ltd.
    Inventor: Seung Wook Choi
  • Patent number: 9797351
    Abstract: A ducted combustion system is disclosed. The ducted combustion system may include a combustion chamber and a fuel injector in fluid connection with the combustion chamber and including at least one orifice opening from an injector tip of the fuel injector, the at least one orifice injecting fuel into the combustion chamber as at least one fuel jet. The system may further include at least one duct disposed within the combustion chamber such that the at least one fuel jet, at least partially, enters the at least one duct upon being injected into the combustion chamber. The system may further include a duct cooling system configured to cool a mixture of fuel and air of the at least one fuel jet.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: October 24, 2017
    Assignee: Caterpillar Inc.
    Inventors: Kenth Svensson, Chad Koci, Christopher Gehrke
  • Patent number: 9689614
    Abstract: A method for combustion in an industrial furnace having fuel and a first oxidizer to heat a material includes arranging at least one lance in a sidewall of the furnace; supplying a second oxidizer with an oxygen content of at least 85 percent by weight in the form of a jet traveling at at least sonic velocity to the interior of the furnace through the at least one lance; running the jet of the second oxidizer in the horizontal plane above the material between and essentially in parallel with two consecutive rows of the roof burners; balancing an amount of the second oxidizer supplied per time unit so that the oxygen content supplied via the second oxidizer constitutes at least 50 percent by weight of the total supplied oxygen per time unit in the furnace.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: June 27, 2017
    Assignee: Linde Aktiengesellschaft
    Inventors: Anders Lugnet, Tomas Ekman
  • Patent number: 9593847
    Abstract: A burner apparatus for a fired heating system and a method of burner operation. The burner provides stable operation when burning gas fuels having heating values ranging from low to high and accommodates sudden wide changes in the Wobbe value of the fuel delivered to the burner. The burner apparatus includes a plurality of exterior fuel ejectors and has an exterior notch which extends around the burner wall for receiving and combusting a portion of the gas fuel. At least a portion of the hot combustion product gas produced in the exterior notch is delivered through channels formed in the burner wall to the combustion area at the forward end of the burner. As the Wobbe value of the gas fuel decreases, one or more outer series of addition ejectors can be automatically activated as needed to maintain the amount of heat output desired.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: March 14, 2017
    Assignee: ZEECO, INC.
    Inventors: Darton J. Zink, Rex K. Isaacs, A. S. (Jamal) Jamaluddin, Charles E. Benson, Roberto O. Pellizzari, Cody L. Little, Seth A. Marty, K. Parker Imel, Jonathon E. Barnes, Chris S. Parker
  • Patent number: 9453424
    Abstract: Effusion cooling holes formed through a transition component provided in a combustion section of a gas turbine engine. The transition component directs a hot working gas from a combustion basket to a first row of vanes in a turbine section of the engine. The effusion cooling holes are formed through an outer wall of the transition component in a direction so that the flow of air through the effusion holes is in a direction substantially opposite to the bulk flow direction of the working gas through the transition component.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: September 27, 2016
    Assignee: SIEMENS ENERGY, INC.
    Inventors: Blake R. Cotten, Richard L. Thackway, Charalambos Polyzopoulos
  • Patent number: 9416974
    Abstract: The present application provides a combustor. The combustor may include an air flow path with a flow of air therein. A flow obstruction may be positioned within the air flow path and cause a wake or a recirculation zone downstream thereof. A number of fuel injectors may be positioned downstream of the flow obstruction. The fuel injectors may inject a flow of fuel into the air flow path such that the flows of fuel and air in the wake or the recirculation zone do not exceed a flammability limit.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: August 16, 2016
    Assignee: General Electric Company
    Inventors: David Kaylor Toronto, Kwanwoo Kim, Abdul Rafey Khan, Luis Flamand
  • Patent number: 9181919
    Abstract: A plasma oil-free ignition system in oxygen enriched environment comprises a plasma generator and a burner. The plasma oil-free ignition system comprises a sleeve group coaxially arranged with the burner, and the sleeve group comprises multiple coaxially sleeved sleeves. Annular spaces are formed between adjacent sleeves and between the sleeves and the burner. Oxygen ducts are arranged on the sleeves, and oxygen ducts are arranged on the burner. Plasmas jetted by the plasma generators form a local high temperature zone filled with high temperature plasma and pulverized coal air flow.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: November 10, 2015
    Inventors: Lu Zheng, Jianwen Zhang, Yang Zhao, Yuehua Li
  • Patent number: 9091441
    Abstract: A burner at which fuel cannot be combusted with air as the only source of oxygen for combustion in a stable flame at the burner when the feed rate of the fuel is too low, when the fuel is fed at too high an air-to-fuel mass ratio, when the fuel contains too high an amount of inert matter, or when the specific energy content of the fuel is too low, is modified by supplying oxidant containing more than 21 vol. % oxygen into the base of a flame at the burner, whereupon such fuels can be combusted at the burner.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: July 28, 2015
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventor: Stefan E. F. Laux
  • Patent number: 9091435
    Abstract: A two-chamber gas burner with a case body, a cavity, an opening, a burner plate, and a plate unit connected to an upper surface of the burner plate, comprising a first chamber and at least one second chamber freely positioned in and supplementary to the first chamber. The plate unit comprises a first plate member directly mounting the burner plate onto the case body by screw nut connector; and a second plate member on top of the burner plate and the first plate securely mounting the burner plate for the second chamber. The gas burner is compact, small, light and has a generally one-piece structure with safe lighting process and stable flame, thereby effectively solving the ignition and explosion problems in high pressure gas burner, and hence is particularly suitable for high pressure high heat value gas burner. Its wind resistance and flame extinction arrangement further stabilized the burning process.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: July 28, 2015
    Inventors: Weiqun Jin, Weidong Jin
  • Patent number: 9091440
    Abstract: A burner at which fuel cannot be combusted with air as the only source of oxygen for combustion in a stable flame at the burner when the feed rate of the fuel is too low, when the fuel is fed at too high an air-to-fuel mass ratio, when the fuel contains too high an amount of inert matter, or when the specific energy content of the fuel is too low, is modified by supplying oxidant containing more than 21 vol. % oxygen into the base of a flame at the burner, whereupon such fuels can be combusted at the burner.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: July 28, 2015
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventor: Stefan E. F. Laux
  • Patent number: 9046263
    Abstract: A method and apparatus for burning fuel are described In a conventional boiler the combustion process produces particles which form a layer of deposits on boiler tubes, thus reducing heat transfer efficiency A fuel burner (100) includes a casing, a combustion chamber (106), a tangential gas inlet (108), a fuel delivery system (112) and an exhaust port (114) The casing includes a lower wall (102), an upper wall (104) and a cylindrical side wall (105) formed between the lower and upper walls (102, 104) and encloses the combustion chamber (106) The tangential gas inlet (108) is formed in the cylindrical wall (105) of the combustion chamber (106) The fuel delivery system (112) is configured to deliver fuel into the tangential air inlet (108) The exhaust port (114) is formed in the upper wall (104) of the combustion chamber (106) Gas is delivered into the combustion chamber (106) at a velocity and flow rate and mixes with fuel delivered from the fuel delivery system (112), such that a clean flame burns in the comb
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: June 2, 2015
    Inventor: Harold Haynes
  • Patent number: 9017067
    Abstract: A premix burner arrangement for safely oxygen-enriching a premix air-fuel combustion system is disclosed. In the disclosed burner arrangement, a first conduit is arranged and disposed to provide a first gas stream. The first gas stream is a self-reactive or self-flammable premixture comprising air and a combustible gas. At least one second conduit is arranged and disposed to provide a second gas stream circumferentially around the first gas stream. The second gas stream includes oxygen. The premix burner arrangement is configured to combust or react the first stream at a temperature at least 1000° F. greater than the temperature of the second stream. A method and combustion system including the premix burner arrangement are also disclosed.
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: April 28, 2015
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Jin Cao, Aleksandar Georgi Slavejkov, Shailesh Pradeep Gangoli, Jeffrey D. Cole
  • Patent number: 8974226
    Abstract: The present invention relates to a method for operating combustion process in a furnace whereby a primary fuel and a secondary fuel are burnt, to an apparatus for injecting liquid oxygen into the furnace and also to the corresponding furnace. The method comprises at least the following steps: the primary fuel and a primary oxidizer are injected into the furnace to create a primary combustion zone, liquid oxygen is injected in as secondary oxidizer such that the secondary fuel combusts with the secondary oxidizer thereby creating a distinct secondary combustion zone. The invention makes it possible for a secondary fuel having a significantly lower calorific value than the primary fuel to be burnt completely in the furnace, such that a product to be produced in the furnace has an improved quality.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: March 10, 2015
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventor: Frank Rheker
  • Patent number: 8969644
    Abstract: A method is proposed for providing an oxygen-containing gas stream for the endothermic reaction of an initial stream comprising one or more hydrocarbons, having a predetermined oxygen concentration and a predetermined temperature, wherein a fluid fuel stream is combusted with a primary air stream at ? values of the primary air stream to the fluid fuel stream of from 0.6 to 1.2 to obtain a combustion gas stream, and a secondary air stream is admixed to the combustion gas stream to obtain the oxygen-containing gas stream for the endothermic reaction, with the predetermined oxygen concentration and the predetermined temperature of the oxygen-containing gas stream being adjusted via the flow rate and the temperature of the secondary air stream.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: March 3, 2015
    Assignee: BASF SE
    Inventors: Gerhard Olbert, Franz Corr, Sven Crone
  • Patent number: 8959793
    Abstract: An oven configured for drying a container. The oven includes a housing defining an interior space including a supply chamber and a return chamber. A conveyor is configured for movement within a portion of the interior space of the housing defined by a plurality of semi-circular shaped duct sections connected at each end of the semi-circular shaped duct sections to a straight duct section. Each duct section includes two side walls coupled to a back wall defining a continuous U-shaped duct path through which the conveyor moves. The oven is further configured to provide a temperature difference between any two points within the interior space of the oven housing controlled to plus or minus two degrees Fahrenheit, by a uniform air flow throughout the oven. The uniform air flow is facilitated by the sizing and spacing of various circular orifices and slotted orifices in the continuous duct path.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: February 24, 2015
    Assignee: International Thermal Systems, Inc.
    Inventors: John Zea, Yougui Zhao, Dan Bein
  • Patent number: 8926317
    Abstract: Method of controlling the operation of a combustion device to provide safe and reliable operation while reducing NOx emission that includes providing a flow of fuel and diluent at a determined volume ratio to a flame in the combustion device; providing a flame stability sensor to generate a measurement of a characteristic of the flame, providing a flow measurement for each of the fuel and diluent, and controlling the determined volume ratio of fuel:diluent using the measurement from the flame stability sensor and/or flow measurements. A combustion system incorporating this method also is included.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: January 6, 2015
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: John T. Farrell, San Chhotray, Gary T. Dobbs, Manuel S. Alvarez, Patrick D. Schweitzer
  • Patent number: 8899970
    Abstract: Burner device (2) for an industrial furnace (1) comprising a channel (3) for fuel, a channel (4) for a first oxidant, an outlet (9) for flue gases, a control device (10) and a heat buffer (7), where the first oxidant and the flue gases alternatingly are led through the heat buffer (7). The invention is characterized in that a separate lancing device (6) is arranged to supply a second oxidant to the burner device (2).
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: December 2, 2014
    Assignee: AGA AB
    Inventors: Tomas Ekman, Anders Lugnet
  • Patent number: 8864491
    Abstract: A method for low NOx combustion, without premixing of fuel and air prior to passage to a combustor, is provided wherein a fuel is injected into a reaction zone via an eductor thereby inducing an air flow and producing a fuel-rich mixture. The fuel-rich mixture is reacted and produces partial reaction products plus heat. A portion of the heat is to transferred to a cooling air stream and the cooled partial reaction products are brought into contact with the heated cooling air stream for combustion. Increased injection of the fuel results in an increased induction of the air flow.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: October 21, 2014
    Assignee: Precision Combustion, Inc.
    Inventors: William C. Pfefferle, Benjamin D. Baird, Shahrokh Etemad, Sandeep K. Alavandi
  • Patent number: 8827691
    Abstract: During a heating phase, injection of a jet of fuel and oxidant (fuel annularly enshrouding oxidant or oxidant annularly enshrouding fuel) from a fuel-oxidant nozzle is combusted in a combustion space. During a transition from the heating phase to a distributed combustion phase, an amount of a secondary portion of either the fuel or oxidant is injected as a jet into the combustion space while the primary portion of that same reactant from the fuel-oxidant nozzle is decreased. At some point during the transition phase, a jet of actuating fluid is injected at an angle towards the jet of reactants from the fuel-oxidant nozzle and/or towards the jet of the secondary portion of reactant. The jet of primary portions of reactants and/or secondary portion of reactant is caused to be bent/deviated towards the other of the two jets. The staging of the secondary portion of reactant is increased until a desired degrees of staging and commencement of a distributed combustion phase are achieved.
    Type: Grant
    Filed: July 31, 2010
    Date of Patent: September 9, 2014
    Assignees: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude, American Air Liquide, Inc.
    Inventors: Rajeev S. Prabhakar, Remi Pierre Tsiava, Magnus Mortberg, Benoit Grand, Bertrand Leroux, Vivek Gautam
  • Patent number: 8814561
    Abstract: Stable operation of oxyfuel combustion boiler is ensured and amplification in likelihood of or downsizing of forced draft fan is attained. Upon change of commanded boiler load from start value to target value by target time, a feed amount of oxygen from oxygen producing device is regulated for attainment of oxygen concentration on entry side of the boiler body from reference value to attainment point or target entry-side oxygen concentration within entry-side oxygen concentration regulation range by target time. After attainment to attainment point, control is made to return entry-side oxygen concentration to reference value at return point. Airflow rate of forced draft fan is controlled with change rate smaller than change rate with which air flow rate of forced draft fan reaches target value by target time.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: August 26, 2014
    Assignee: IHI Corporation
    Inventors: Tetsuya Hori, Toshihiko Yamada, Yohei Akutsu
  • Patent number: 8764435
    Abstract: A modulating furnace having a variable rate burner and a controller is operated at a first burner firing rate for a first period of time, and a higher burner firing rate once the first period of time has expired. In some instances, the burner may be operated only while the controller is receiving a call for heat from a thermostat or the like.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: July 1, 2014
    Assignee: Honeywell International Inc.
    Inventors: Timothy J. Nordberg, Brent Chian, Michael W. Schultz, Douglas D. Bird
  • Patent number: 8714969
    Abstract: The invention relates to a fuel combustion method in which one jet of fuel and at least two jets of oxidant are injected. According to the invention, the first jet of oxidant, known as the primary oxidant jet, is injected such as to be in contact with the jet of fuel and to produce a first incomplete combustion, the gases produced by said first combustion comprising at least one part of the fuel, and the second jet of oxidant is injected at a distance from the jet of fuel such as to combust with the part of the fuel present in the gases produced by the first combustion. Moreover, the primary oxidant jet is divided into two primary jets, namely: a first primary oxidant jet, known as the central jet, which is injected at the centre of the jet of fuel; and a second primary oxidant jet, knows as the sheathing jet, which is injected coaxially around the fuel jet.
    Type: Grant
    Filed: December 6, 2004
    Date of Patent: May 6, 2014
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Bertrand Leroux, Remi Pierre Tsiava
  • Patent number: 8702418
    Abstract: In one embodiment, a method for generating heat energy includes injecting a stream having a concentration of at least 50% oxygen (O2 stream) into a primary gas stream through a mixer, the mixer discharging the O2 stream as two or more spaced jets traversing the primary stream, thereby enriching the primary gas stream. The method further includes mixing fuel with the enriched primary gas stream, thereby forming a fuel stream; and combusting the fuel stream, thereby forming a flue gas stream.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: April 22, 2014
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: M. Usman Ghani, Florian Gautier, Rajani K. Varagani, Susie Levesque, Bernard Labegorre, Frederic Camy-Peyret, Sylvain Grillon, Pavol Pranda
  • Patent number: 8701416
    Abstract: A double annular radially staged combustor for a gas turbine engine having a reduced internal flow transitioning area between an outboard primary combustion zone and al inboard secondary combustion zone. The primary combustion zone is an annular shell form with a radially inboard annular exit. An outboard ring with thru holes and an inboard annular channel yields a quick quench zone. The secondary combustion zone, adjacent to and downstream of the quick quench zone is of an annular shell form, generally radially inboard of the primary combustion zone. In a preferred embodiment the secondary combustion zone exiting hot gases flows into a dilution zone prior to exiting the combustor.
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: April 22, 2014
    Inventor: Joseph Michael Teets
  • Patent number: 8696349
    Abstract: The invention relates to a method for the combustion of a fuel using an oxygenated gas, in which a jet of fuel and at least two jets of oxygen-rich oxygenated gas are injected. According to the invention, the first jet of oxygen-rich oxygenated gas, known as the primary jet, is injected such as to be in contact with the jet of fuel and to produce a first incomplete combustion, the gases produced by said first combustion comprising at least one part of the fuel, and the second jet of oxygen-rich oxygenated gas is injected at a distance I1 from the jet of fuel such as to combust with a first part of the fuel present in the gases produced by the first combustion. Moreover, a low-oxygen oxygenated gas is injected at a distance I2 from the jet of fuel such as to combust with a second part of the fuel present in the gases produced by the first combustion, I2 being greater than I1.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: April 15, 2014
    Assignee: L'Air Liquide, Société Anonyme pour l'Étude et l'Éxploitation des Procédés Georges Claude
    Inventors: Bertrand Leroux, Remi Pierre Tsiava, Patrick Jean-Marie Recourt, Benoit Grand, Pascal Duperray, Loic Sylvestre, Mohand Amirat
  • Patent number: 8696348
    Abstract: Burner assembly comprising (a) an elongated body having a periphery, a discharge end adjacent a combustion zone, and an axis, wherein the axis extends into the combustion zone; (b) one or more oxidant nozzles disposed at the discharge end of the elongated body and adapted to discharge a gaseous oxidant into the combustion zone; and (c) one or more fuel nozzles disposed at the discharge end of the elongated body and adapted to discharge a fuel into the combustion zone. At least one of the oxidant and fuel nozzles is characterized by a shape factor, ?, that is greater than about 10, wherein ? is a dimensionless parameter defined as ?=P2/2A where P is the perimeter dimension of the discharge opening and A is the area of the discharge opening.
    Type: Grant
    Filed: April 26, 2006
    Date of Patent: April 15, 2014
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Jin Cao, Mahendra Ladharam Joshi, Aleksandar Georgi Slavejkov
  • Patent number: 8647112
    Abstract: A combustor assembly of a water heater, which is provided between an air blower and a burner set to guide air from the air blower to the burner set, includes a first board, a second board and a third board stacked in sequence. Between the first board and the second board there is a first chamber and a first port, and between the second board and the first board there is a second chamber and a second port. The second board and the third board both have apertures. These boards restrict and divide an air flow of the air blower to flow along several paths to increase heat efficiency.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: February 11, 2014
    Assignee: Grano Mate Co., Ltd.
    Inventors: Chung-Chin Huang, Chin-Ying Huang, Hsin-Ming Huang, Hsing-Hsiung Huang, Kuan-Chou Lin