Feed Projected Tangential To Wall Of Circular Combustion Chamber Patents (Class 431/173)
  • Patent number: 11079068
    Abstract: A method for rapidly filling a compressed gas storage tank with a moderated temperature rise using a Coanda nozzle to inject the feed gas into the tank and using the Coanda nozzle to direct the feed gas along the inner surface of the storage tank; entraining the stored gas with the feed gas that is flowing under the influence of the Coanda effect to flow along the inner surface of the gas storage tank; and transferring heat from the flowing gas to the external walls of the tank. Also, a compressed gas storage tank for rapid filling with a moderated temperature rise comprising: a gas storage tank and a Coanda nozzle capable of directing feed gas that is injected into the gas storage tank along the inner surface of the gas storage tank.
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: August 3, 2021
    Assignee: TDA Research, Inc.
    Inventors: Ambalavanan Jayaraman, Michael Travis Bonnema
  • Patent number: 10570345
    Abstract: The invention relates to a regenerative reactor system which includes a reverse flow regenerative reactor. The reverse flow regenerative reactor includes a housing enclosing an interior region, and process flow components configured to manage the flow of a pyrolysis stream through the interior region. The process flow components include reactor beds. The reverse flow regenerative reactor also includes a pyrolysis inlet conduit for managing flow of the pyrolysis stream to the reverse flow regenerative reactor, and further includes a liquid distribution device that is configured to disperse a liquid portion of the pyrolysis stream along an internal surface of the pyrolysis inlet conduit.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: February 25, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Paul F. Keusenkothen, Richard C. Stell
  • Patent number: 10406499
    Abstract: A mixing reactor (1), the reactor comprising a body (2) having a first inlet (3), a second inlet (5) and an outlet (4), in which there is an inner passage (6) through the body (2) from the first inlet (3) at a first end (12) of the body (2) to the outlet (4) at a second end of the body (2) along a length of the body (2), the inner passage (6) having a side wall (17) along the length, and an outer passage (7) closer to a surface (14) of the body (2) than the inner passage (6), the outer passage (7) running from the second inlet (5) at the second end, travelling through the body (2) along the length and meeting the inner passage (6) at a junction (11) at the first end, the outer passage (7) joining the inner passage (6) through the side wall (17) at the junction (11). Such a mixing reactor can be used for producing particles such as nanoparticles or Metal-Organic frameworks.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: September 10, 2019
    Assignee: The University of Nottingham
    Inventors: Edward Lester, Thomas Huddle
  • Patent number: 9458796
    Abstract: The present invention discloses a dual-vortical-flow hybrid rocket engine, including a main body and a nozzle communicating with an end of the main body. The main body includes a plurality of disk-like combustion chambers arranged longitudinally, and a central combustion chamber formed along the axial portion and communicating the disk-like combustion chambers. Each of the disk-like combustion chambers is provided with a plurality of oxidizer injection nozzles at its inner circumference surface. Inside the disk-like combustion chambers, the oxidizer is injected in nearly the tangent directions of the circumference, and the injection directions are opposite for the neighboring disk-like combustion chambers, which creates vortical flows with opposite rotating directions so as to increase the total residence time of the combustion reactions of the oxidizer and the solid-state fuel in the disk-like combustion chambers of the present invention.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: October 4, 2016
    Assignees: National Applied Research Laboratories, National Chiao Tung University
    Inventors: Yen-Sen Chen, Men-Zen Wu, Jong-Shinn Wu, Alfred Lai, Jhe-Wei Lin, Tzu-Hao Chou
  • Patent number: 9447969
    Abstract: Method of combusting a fuel with an oxidizer and corresponding burner assembly, whereby a jet of fuel and a jet of primary oxidizer are injected into a combustion zone in contact with one another so as to generate a primary fuel-rich flame, a swirling first peripheral gas jet is injected through a first passage around the fuel jet and primary oxidizer jets and a swirling second peripheral gas jet is injected through a second passage around the first peripheral gas jet and whereby a jet of secondary oxidizer is injected through a passage into the combustion zone between the first and second peripheral gas jets.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: September 20, 2016
    Assignee: L'Air Liquide Société Anonyme Pour l'Étude Et l'Exploitation des Procedes Georges Claude
    Inventors: Patrick Recourt, Rémi Tsiava
  • Patent number: 9423129
    Abstract: A combustor adapted for use in a gas turbine engine is disclosed. The combustor includes a metallic shell forming a cavity and a ceramic liner arranged in the cavity of the metallic shell. The ceramic liner defines a combustion chamber in which fuel is burned during operation of a gas turbine engine. The ceramic liner includes a plurality of ceramic tiles mounted to the metallic shell and arranged to shield the metallic shell from heat generated in the combustion chamber.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: August 23, 2016
    Assignee: Rolls-Royce Corporation
    Inventors: Charles B Graves, William G Cummings, III, Russell N Bennett, Jun Shi
  • Patent number: 9388983
    Abstract: A burner includes a cylindrical tube that terminates in a burner discharge end. An annular disk, affixed to the discharge end, defines a hole. An oxidizer intake delivers oxidizer into the tube. A fuel nozzle delivers fuel into the tube. A cylindrical slotted member has an interrupted outer surface and is disposed within a portion of the tube. The slotted member is affixed to the annular disk and defines an interior void that opens to the hole. The tube and the slotted member define an annular passage therebetween. Elongated slots pass through the outer surface of the slotted member, each directed along a different non-diametrical chord of the slotted member. The elongated slots direct a gaseous stream into the interior void so as to impart both an inwardly-directed radial velocity component and a tangential velocity component to the gaseous stream.
    Type: Grant
    Filed: October 3, 2013
    Date of Patent: July 12, 2016
    Assignee: Plum Combustion, Inc.
    Inventors: Yedidia Neumeier, David S. Neff, Michael Pratte, Joachim P. Sondervan, Ghislain Retaureau
  • Publication number: 20150072295
    Abstract: The invention relates to firing technology and can be employed in the combustion of hydrocarbon fuel in gas turbine plants, gas-steam plants, boilers, and other thermal plants. The fuel and the air enter the combustion chamber via a fuel-air inlet port. The delivery of fuel can be done by means of injecting the liquid or gaseous fuel via a nozzle. The fuel-air mixture occurs in the inlet port. Upon the tangential entrance of the fuel-air mixture from the inlet port into the combustion chamber, the swirl is effected in the combustion chamber, and the mixture is combusted. The combustion residues, because of the disposition of the inlet port at a tangent to the combustion chamber, are set into rotary motion. The hollow cone is oriented and disposed with its tip toward the combustion chamber and contributes to forming a swirl angle of the combustion residues. A confusor increases the flow resistance, and consequently the pressure in the combustion chamber increases.
    Type: Application
    Filed: June 4, 2013
    Publication date: March 12, 2015
    Inventors: Askar BAUBEK, Nariman BAUBEK
  • Patent number: 8944809
    Abstract: A tubular combustion chamber including a tubular combustion chamber whose front-end is open; and, fuel-gas spraying nozzles and oxygen-containing-gas spraying nozzles, for spraying a fuel and an oxygen-containing-gas separately and individually, or for spraying a premixed gas; wherein respective orifices of the respective nozzles face toward an inner surface of the combustion chamber, so as to spray the fuel-gas and the oxygen-containing-gas in a neighborhood of a tangential direction of an inner circumferential wall of the combustion chamber; wherein the tubular flame burner is a multi-stage tubular burner that is unified in a body, by using a plurality of the tubular flame burners, and by connecting the front-end of the tubular flame burner with a smaller inner diameter of the combustion chamber into the rear-end of the tubular flame burner with a greater inner diameter of the combustion chamber.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: February 3, 2015
    Assignee: JFE Steel Corporation
    Inventors: Kuniaki Okada, Munehiro Ishioka, Hitoshi Oishi, Tatsuya Shimada, Koichi Takashi, Yutaka Suzukawa, Yoshiki Fujii, Takamitsu Kusada
  • Publication number: 20150000572
    Abstract: A precombustor system (300) including an ignition chamber (301) having a front wall (308), a central axis, a diameter Dic, and an outlet (313) configured to discharge a product gas (315). The ignition chamber (301) includes a central ignition oxygen injector (307) configured to inject a first oxygen stream from the front wall (308) substantially parallel to the central axis, and a tangential primary fuel injector (303) configured to inject a primary fuel stream tangential to the central axis at a location an axial distance Xpf downstream of the front wall (308). The ratio Xpf/Dic is from 0.25 to 4.0. The central axis forms an angle a with a vertical line of less than or equal to about 45 degrees. The trajectory of the primary fuel stream forms an angle ? with a plane that is perpendicular to the central axis of less than or equal to about 20 degrees. A method for combustion is also disclosed.
    Type: Application
    Filed: November 7, 2012
    Publication date: January 1, 2015
    Inventors: Mark Daniel D'Agostini, Aleksandar Georgi Slavejkov, Stephane Bernard Poussou, Xiaoyi He, Francis Anthony Milcetich
  • Publication number: 20140363775
    Abstract: A gas pipe ignitor for igniting a non-premixed air and fuel mixture includes a housing having an axially interior space along its length, a supply end segment, a flame end segment axially spaced from the supply end segment, and a flexible segment spaced between the supply end segment and the flame end segment. A fuel supply conduit extends axially within the housing, and the fuel supply conduit is operatively flexible with the flexible segment. An ignition conduit extends axially within the housing, and the ignition conduit is operatively flexible with the flexible segment. A detector conduit extends axially within the housing, and the detector conduit is operatively flexible with the flexible segment. An air supply conduit is operatively connected to the housing at the supply end segment and provides combustion air within the interior space.
    Type: Application
    Filed: June 5, 2013
    Publication date: December 11, 2014
    Inventors: David C. SAUNDERS, James P. SUTTON, Rebecca Lynn TOBIASZ, Gerard CHASE
  • Patent number: 8708696
    Abstract: Combustor. The combustor includes an axially symmetric tube along with means for introducing fuel and air into the tube. A swirler is disposed within the tube to impart rotation in a first direction to the air/fuel mixture. A plurality of holes downstream of the swirler are disposed around the tube and offset at an angle relative to an inward normal to the tube wall. Air is injected through the offset holes to impart rotation to the air/fuel mixture in a second direction opposite to the first direction. A combustion chamber having a diameter larger than that of the tube receives and burns the air/fuel mixture from the tube.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: April 29, 2014
    Assignee: Massachusetts Institute of Technology
    Inventors: Ahmed F. Ghoniem, Zachary A. LaBry, Santosh J. Shanbhogue, Raymond L. Speth
  • Patent number: 8641412
    Abstract: A high efficiency laminar flow burner system for proving a stream of heat energy including a supply input module for providing fuel and laminar streams of air to a combustion manifold. The laminar air delivery system includes a damper, a blower, and an air delivery controller. The air delivery controller receives an efficiency signal to control the flow of a laminar air intake stream by adjusting the damper. The combustion manifold includes an air-fuel mixing system, a stoichiometric unit, and a refractory unit each coupled to one another. The laminar air intake stream traveling from the supply input module passes through a stoichiometric unit body to meet with a first combustion stream from an air-fuel mixing chamber within the stoichiometric unit body to define a second combustion stream. The second combustion stream then travels across the refractory passageway to define a third combustion stream.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: February 4, 2014
    Assignee: Resource Rex, LLC
    Inventors: Teodoro A. Cantu, Ulric Teodoro Alejandro Cantu, Ervin Eliud Torres Gomez
  • Patent number: 8545215
    Abstract: A fuel injector is provided and includes an outer body, a converging tubular body including a converging section, defining a converging annular passage therein and being disposed within the outer body to define an outer annular passage between an interior surface of the outer body and an exterior surface of the converging tubular body, the annular passages each being receptive of a fluid at respective inlets thereof such that the fluid is directed to flow toward respective outlets thereof and a fuel line to deliver fuel through at least the converging tubular body at the converging section to the converging annular passage in a substantially tangential direction relative to a circumferential curvature of the converging tubular body.
    Type: Grant
    Filed: May 17, 2010
    Date of Patent: October 1, 2013
    Assignee: General Electric Company
    Inventor: Reena Bhagat
  • Patent number: 8443740
    Abstract: A cyclonic incinerator includes a cylindrical outer burn chamber having a defining wall, a central axis, a first end, a second end, and a forced air opening extending through the wall between the first end and the second end. A forced air manifold is provided which is adapted to direct forced air into the forced air opening of the outer burn chamber to create a cyclonic air flow about the central axis of the outer burn chamber. A cylindrical inner burn chamber is concentrically disposed within the outer burn chamber. The inner burn chamber has a defining wall, a first end and a second end. The first end of the inner burn chamber has an exhaust gas opening. The second end of the inner burn chamber is in communication with the outer burn chamber. A gas inlet is positioned at the first end of the outer burn chamber.
    Type: Grant
    Filed: November 1, 2007
    Date of Patent: May 21, 2013
    Assignee: Maralto Environmental Technologies Ltd.
    Inventor: Marlin Romeo
  • Patent number: 8425223
    Abstract: An apparatus, a system and a method by which fuel gas to drive a heat source is heated are provided. The apparatus includes a first gas passage by which at least a portion of the fuel gas is transported from an inlet to an outlet, the outlet being fluidly coupled to the heat source, a plurality of heat pipes in thermal communication, at respective first ends thereof, with the portion of the fuel gas transported by the first gas passage, and a heating element, fluidly coupled to the heat source to receive exhaust of the heat source, through which respective second ends of the heat pipes extend to be in position to be heated by the exhaust.
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: April 23, 2013
    Assignee: General Electric Company
    Inventors: Hua Zhang, Jatila Ranasinghe, Dean Matthew Erickson
  • Publication number: 20120148964
    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: Application
    Filed: July 8, 2010
    Publication date: June 14, 2012
    Inventor: Harold Haynes
  • Publication number: 20120028200
    Abstract: This patent application is for the novel utilization of an air cyclone combustion unit (CCU) for burnout of residual carbon from burning of fly ash resulting from coal and/or coke in electric power plants or from natural pozzolans. In some cases, residual carbon and/or moisture is too high in fly ash or pozzolans to meet market conditions for quality or ASTM C 618 Specification for Natural Pozzolans and Coal Fly Ash. Heat treating the coal fly ash or natural pozzolan to remove sufficient amounts of carbon renders the remaining pozzolan capable of meeting specifications and being sufficient in quality to perform as a cementitious material in concrete and mortars. Use of an air cyclone, with suitable mechanical adjustments and heat either from an external source or with the inherent heat value from the residual carbon will be claimed.
    Type: Application
    Filed: October 20, 2009
    Publication date: February 2, 2012
    Inventor: James Kenneth Hicks
  • Patent number: 7922480
    Abstract: The invention provides a combustion apparatus which can inhibit an NOx generation even in the case of promoting a mixing between a high-temperature combustion gas and an air so as to intend to reduce an unburned combustible. In a combustion apparatus provided with a burner burning a fuel within a furnace in a theoretical air ratio or less, and an air port supplying a combustion air for a shortfall in the burner, a supply apparatus for supplying a nitrogen oxide generation inhibiting gas is provided in a mixing region between the both or near the mixing region. Further, the invention provides a wind box which can inhibit an NOx generation even in the case of promoting a mixing between a high-temperature combustion gas and an air so as to intend to reduce an unburned combustible.
    Type: Grant
    Filed: August 27, 2003
    Date of Patent: April 12, 2011
    Assignee: Babcock-Hitachi Kabushiki Kaisha
    Inventors: Kenji Kiyama, Shigeki Morita, Osamu Okada, Koji Kuramashi, Takanori Yano, Kenichi Ochi, Akira Baba, Miki Shimogori, Takeru Fukuchi, Hiroshi Yamaguchi, Hironobu Kobayashi, Masayuki Taniguchi, Hirofumi Okazaki, Kenji Yamamoto
  • Patent number: 7802421
    Abstract: A means capable of supplying exhaust gas sufficiently imitating exhaust gas from actual diesel engines is provided. A PM generating apparatus has a constitution in which combustion air supplied to the space between a chassis and an outer casing via an air inlet is introduced into the space between the outer casing and an inner casing via through-holes of the outer casing, and a fuel injected by an fuel-injection means into the space between the chassis and the outer casing is introduced into the space between the outer casing and the inner casing via the through-holes of the outer casing, wherein the fuel is combusted to generate PM.
    Type: Grant
    Filed: November 13, 2006
    Date of Patent: September 28, 2010
    Assignee: NGK Insulators, Ltd.
    Inventors: Toshihiko Hijikata, Satoru Yamada, Yukio Miyairi
  • Patent number: 7717701
    Abstract: A burner includes a first oxidant conduit to transmit a first stream of an oxidant; a solid fuel conduit having an outtake and surrounding the first oxidant conduit, thereby forming a first annulus to transmit a mixture of a transport gas and particles of a solid fuel; a second oxidant conduit surrounding the solid fuel conduit, thereby forming a second annulus to transmit a second stream of the oxidant or an other oxidant; and means for segregating the mixture proximate the outtake into a lean fraction stream and a dense fraction stream. The first stream of the oxidant exiting the first oxidant conduit combines during combustion with the lean fraction stream, thereby forming an inner combustion zone adjacent the outtake, and the second stream of the oxidant, or the other oxidant, exiting the second oxidant conduit combines during combustion with the dense fraction stream, thereby forming an outer combustion zone.
    Type: Grant
    Filed: October 24, 2006
    Date of Patent: May 18, 2010
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Mark Daniel D'Agostini, Francis Anthony Milcetich
  • Patent number: 7717105
    Abstract: A gas radiation burner for improving the efficiency of burning by promoting mixing of fuel gas and air is disclosed. The gas radiation burner includes a gas supply member for injecting gas, at least one mixing pipe for suctioning air along with the gas injected from the gas supply member to produce mixture gas and injecting the produced mixture gas, a burner pot for receiving the mixture gas supplied from the mixing pipe, a burner mat mounted at a top of the burner pot and adapted to emit radiation heat that is generated as the mixture gas supplied from the burner pot burns on the burner mat, and a burner housing located on a top of the burner mat and defining a burning chamber therein. The mixing pipe is connected to a predetermined position of a lateral portion of the burner pot such that the mixture gas supplied from the mixing pipe flows along an inner peripheral surface of the burner pot.
    Type: Grant
    Filed: January 4, 2007
    Date of Patent: May 18, 2010
    Assignee: LG Electronics Inc.
    Inventors: Dae Rae Lee, Jung Wan Ryu, Dae Bong Yang, Young Soo Kim, Yang Ho Kim
  • Publication number: 20100099052
    Abstract: A tubular combustion chamber including a tubular combustion chamber whose front-end is open; and, fuel-gas spraying nozzles and oxygen-containing-gas spraying nozzles, for spraying a fuel and an oxygen-containing-gas separately and individually, or for spraying a premixed gas; wherein respective orifices of the respective nozzles face toward an inner surface of the combustion chamber, so as to spray the fuel-gas and the oxygen-containing-gas in a neighborhood of a tangential direction of an inner circumferential wall of the. combustion chamber; wherein the tubular flame burner is a multi-stage tubular burner that is unified in a body, by using a plurality of the tubular flame burners, and by connecting the front-end of the tubular flame burner with a smaller inner diameter of the combustion chamber into the rear-end of the tubular flame burner with a greater inner diameter of the combustion chamber.
    Type: Application
    Filed: December 15, 2009
    Publication date: April 22, 2010
    Applicant: JFE Steel Corporation
    Inventors: Kuniaki Okada, Munehiro Ishioka, Hitoshi Oishi, Tatsuya Shimada, Koichi Takashi, Yutaka Suzukawa, Yoshiki Fujii, Takamitsu Kusada
  • Patent number: 7654819
    Abstract: A tubular flame burner, a combustion method, and combustion controller, are disclosed. Here, the tubular flame burner comprises: a tubular combustion chamber whose h one end is open; fuel-spraying nozzles and oxygen-containing-gas spraying nozzles. The respective nozzle orifices are formed in the inner face of the combustion chamber so that each spraying direction is in a neighborhood of a tangential direction of the inner circumferential wall of the combustion chamber. And an ignition device is disposed at a position r/2 from the tube axis of the combustion chamber (r: the radius of the combustion chamber). The length of the combustion chamber can be adjusted, the tubular flame burner is a multi-stage burner formed of multiple tubular flame burners, and a gap between the inner tube and the outer tube serves as a gas-flow path.
    Type: Grant
    Filed: August 7, 2003
    Date of Patent: February 2, 2010
    Assignee: JFE Steel Corporation
    Inventors: Kuniaki Okada, Munehiro Ishioka, Hitoshi Oishi, Tatsuya Shimada, Koichi Takashi, Yutaka Suzukawa, Yoshiki Fujii, Takamitsu Kusada
  • Publication number: 20090305179
    Abstract: The invention relates to furnace devices for powerful power-generating units and can be used for the heat and electric-power industry. The inventive steam-generator furnace comprises a vertical annular combustion chamber, which is formed by external and internal tubular screens, embodied in the form of concentrically arranged equilateral prisms. Burners and secondary air nozzles are placed in the bottom part of the furnace on the external screen faces tangentially to a conventional circle. Said burners and nozzles are movably arranged on the same plane and unidirectionally oriented in such a way that it makes it possible to adjust the conventional circle diameter. Additional secondary air nozzles are mounted in the top part of the furnace on the faces of the external and internal screens oppositely with respect to the burners.
    Type: Application
    Filed: December 20, 2005
    Publication date: December 10, 2009
    Applicant: ZAKRYTOE AKTSIONERNOE OBSCHESTVO "OTES-SIBIR'
    Inventor: Felix Anatolievich Serant
  • Publication number: 20090266081
    Abstract: Pyrolyzing gasification system and method of use including primary combustion of non-uniform solid fuels such as biomass and solid wastes within a refractory lined gasifier, secondary combustion of primary combustion gas within a staged, cyclonic, refractory lined oxidizer, and heat energy recovery from the oxidized flue gas within an indirect air-to-air all-ceramic heat exchanger or external combustion engine. Primary combustion occurs at low substoichiometric air percentages of 10-30 percent and at temperatures below 1000 degrees F. Secondary combustion is staged and controlled for low NOx formation and prevention of formation of CO, hydrocarbons, and VOCs. The gasifier includes a furnace bed segmented into individual cells, each cell is independently monitored using a ramp temperature probe, and provided with controlled air injection. Gasifier air injection includes tuyere arrays, lances, or both.
    Type: Application
    Filed: June 30, 2009
    Publication date: October 29, 2009
    Inventor: Robert G. Graham
  • Patent number: 7581945
    Abstract: A system, a method, and an article of manufacture for adjusting CO emission levels in predetermined locations in a boiler system are provided. The boiler system has a plurality of burners and a plurality of CO sensors disposed therein. The system determines locations within the boiler system that have relatively high CO levels utilizing the plurality of CO sensors and then adjusts A/F ratios of burners affecting those locations to decrease the CO levels at the locations.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: September 1, 2009
    Assignee: General Electric Company
    Inventors: Neil Colin Widmer, Avinash Vinayak Taware, Ivy Wai Man Chong
  • Publication number: 20090087805
    Abstract: Tertiary nozzle of port for gas injection into furnace includes a contracted flow producing channel provided obliquely toward central axis from the upstream side of gas flow so that the gas flow has a velocity component heading from the outer circumferential side of the port toward the central axis and a velocity component heading along the central axis toward the interior of the furnace, and including louver disposed for guiding so that the gas flows along the surface of throat wall of enlarged pipe configuration wherein the gas channel is enlarged at a furnace wall opening disposed at an outlet area of the contracted flow producing channel.
    Type: Application
    Filed: October 27, 2006
    Publication date: April 2, 2009
    Applicant: BABCOCK-HITACHI KABUSHIKI KAISHA
    Inventors: Yusuke Ochi, Akira Baba, Kouji Kuramashi, Hirofumi Okazaki, Masayuki Taniguchi
  • Publication number: 20080166672
    Abstract: A method comprises providing a combustion apparatus having an outer vessel and an inner conduit. The outer vessel has a first wall that defines an internal volume. The inner conduit is at least partially positioned within the internal volume and provides a fluid passageway that is in communication therewith. The method further comprises introducing oxygen into the internal volume in a manner such that the oxygen swirls within the internal volume and around the inner conduit. Furthermore, the method comprises introducing fuel into the internal volume, and combusting the fuel and oxygen at least partially therewithin. The combustion of the fuel and oxygen produces reaction products and the method further comprises discharging at least some of the reaction products from the internal volume via the fluid passageway of the inner conduit.
    Type: Application
    Filed: May 19, 2005
    Publication date: July 10, 2008
    Applicant: INNOVATIVE ENERGY, INC.
    Inventors: Andrew Schlote, Phil Gerard Langhorst
  • Patent number: 7249721
    Abstract: The present invention relates to a device for injecting a liquid fuel into a pressurized air flow (7), in particular for a combustion chamber, comprising a hollow cylindrical body (10) of longitudinal axis (YY?) delimiting a substantially cylindrical central volume (11), fluid veins (12) substantially radial in relation to the longitudinal axis of body (10) and arranged on the periphery of said body to allow passage of said flow, and axial fuel injection pipes (5) arranged inside said fluid veins and connected to at least one fuel inlet (3) by at least one supply point (16). According to the invention, pipes (5) are pierced with openings (9) that open onto central volume (11) of said body (10) and which are oriented substantially in the direction of the flow in fluid veins (12).
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: July 31, 2007
    Assignees: Institut Francais du Petrole, Turbomeca
    Inventors: Tidjani Niass, Gérard Martin, Etienne Lebas, Guy Grienche, Gérard Schott, Hubert Verdier
  • Patent number: 7112060
    Abstract: The present invention provides a burner for use in a combustion-type waste gas treatment system for combusting waste gases emitted from semiconductor manufacturing system, particularly, a deposition gas containing SiH4 and a halogen-base gas, simultaneously at a high efficiency of destruction, making it difficult for a powder of SiO2 to be attached and deposited, performing a low-NOx combustion, and maintaining a desired level of safety. The combustion-type waste gas treatment system has a flame stabilizing zone (15), which is open toward a combustion chamber (11), surrounded by a peripheral wall (12), and closed by a plate (14) remotely from the combustion chamber. A waste gas, an auxiliary combustible agent, and air are introduced into and mixed with each other in the flame stabilizing zone (15), and the mixed gases are ejected toward the combustion chamber (11) perpendicularly to the plate (14).
    Type: Grant
    Filed: April 12, 2004
    Date of Patent: September 26, 2006
    Assignee: Ebara Corporation
    Inventors: Yoshiro Takemura, Tetsuo Komai, Kotaro Kawamura, Takeshi Tsuji, Kazutaka Okuda, Rikiya Nakamura, Keiichi Ishikawa, Tomonori Ohashi, Yasutaka Muroga, Tadakazu Nishikawa, Yuji Shirao, Hiroyuki Yamada
  • Patent number: 7080517
    Abstract: A method comprising providing a combustion apparatus, introducing a fuel into the combustion apparatus, and introducing feed air into the combustion apparatus. The method further comprises using the combustion apparatus to cause at least some of the fuel and at least some of the feed air to swirl within the combustion region and about a longitudinal axis of the combustion apparatus, and causing an initial combustion reaction of some of the swirling fuel and feed air in the combustion region to form combustion reaction products. Some of the swirling fuel at least temporarily remains unburned. The swirling is sufficient to cause the unburned fuel to move radially away from the longitudinal axis and to cause the combustion reaction products to move radially toward the longitudinal axis.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: July 25, 2006
    Assignee: Innovative Energy, Inc.
    Inventor: Andrew Schlote
  • Patent number: 7014458
    Abstract: Methods and apparatus for combustion of a hydrocarbon fuel in a combustion chamber of a furnace or boiler are presented, the combustion normally using only air as an oxidant, part of the air entering the combustion chamber through one or more burners, and a remaining portion of air entering the combustion chamber at a plurality of locations downstream of the burners. The methods comprise injecting oxygen-enriched gas through a plurality of lances into the combustion chamber at a plurality of downstream locations, the oxygen-enriched gas injected at a velocity ranging from subsonic to supersonic, and the oxygen-enriched gas being present in an amount sufficient to provide an oxygen concentration of no more than 2% on a volume basis greater than when air is used alone as oxidant.
    Type: Grant
    Filed: December 8, 2003
    Date of Patent: March 21, 2006
    Assignees: American Air Liquide, Inc., L'Air Liquide, Societe Anonyme a Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Ovidiu Marin, Benjamin Bugeat, Eric Streicher, Pietro Di Zanno
  • Patent number: 6986797
    Abstract: An auxiliary reactor for use with a reformer reactor having at least one reaction zone, and including a burner for burning fuel and creating a heated auxiliary reactor gas stream, and heat exchanger for transferring heat from auxiliary reactor gas stream and heat transfer medium, preferably two-phase water, to reformer reaction zone. Auxiliary reactor may include first cylindrical wall defining a chamber for burning fuel and creating a heated auxiliary reactor gas stream, the chamber having an inlet end, an outlet end, a second cylindrical wall surrounding first wall and a second annular chamber there between. The reactor being configured so heated auxiliary reactor gas flows out the outlet end and into and through second annular chamber and conduit which is disposed in second annular chamber, the conduit adapted to carry heat transfer medium and being connectable to reformer reaction zone for additional heat exchange.
    Type: Grant
    Filed: May 2, 2000
    Date of Patent: January 17, 2006
    Assignee: Nuvera Fuel Cells Inc.
    Inventors: Lawrence G. Clawson, Matthew H. Dorson, William L. Mitchell, Brian J. Nowicki, Jeffrey M. Bentley, Robert Davis, Jennifer W. Rumsey
  • Patent number: 6908303
    Abstract: A premixed air-fuel mixture supply device is joined to a combustor liner included in a combustor for a gas turbine or an aircraft engine. The premixed air-fuel mixture supply device has a pilot fuel injection unit having an inner wall, and a prevaporizing, premixing main fuel injection unit having an outer wall surrounding the inner wall. A combustion air passage is defined by the inner and the outer wall. An intermediate wall is disposed in the combustion air passage so as to divide an upstream part of the combustion air passage into a secondary combustion air passage surrounding the inner wall, and an outer combustion air passage surrounding the intermediate wall. Fuel inject holes are formed in the intermediate wall to inject fuel radially outward into the outer combustion air passage. A swirling device is disposed in the secondary combustion air passage to swirl combustion air flowing through the secondary combustion air passage. An atomization lip is formed in a tail part of the intermediate wall.
    Type: Grant
    Filed: February 2, 2004
    Date of Patent: June 21, 2005
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Takeo Oda, Hiroyuki Ninomiya, Masayoshi Kobayashi
  • Patent number: 6862877
    Abstract: A biomass fuel combustor for use in the pressurized combustion comprising of biomass fule particles to produce a pressurized exhaust gas, the combustor comprising: a cyclonic combustion chamber having a combustion region and first and second fuel inlets, the first inlet being for the entry into the chamber of gas and/or liquid secondary fuel for combustion in said combustion region and the second inlet being for the entry into the chamber of biomass fuel particles also for combustion in said combustion region, the chamber being so constructed and arranged that the heat generated by the secondary fuel combustion will, in use and at least during stan-up of the combustor, promote fragmentation of the incoming biomass fuel particles.
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: March 8, 2005
    Assignee: James Engineering (Turbines) Limited
    Inventor: David W James
  • Patent number: 6843648
    Abstract: The present invention relates to a method and to a device intended for spontaneous combustion of a fuel comprising organic, vegetable or mineral materials, the device comprising a combustion chamber, at least one fuel injection means, at least one air inlet, hot fumes discharge means. Chamber (1) comprises a cylindrical shell (11), the discharge means comprise a pipe (6) having the same axis as the chamber and arranged inside said chamber, and fuel injection means (7) is arranged substantially tangential to said cylindrical shell so that the fuel follows a circular motion around said pipe in the chamber.
    Type: Grant
    Filed: December 12, 2000
    Date of Patent: January 18, 2005
    Assignees: Institut Francais du Petrole, Lacaze S.A.
    Inventors: Patrick Flament, Pierre Lacaze, Mouloud Hendou, Christophe Teulet
  • Publication number: 20040185401
    Abstract: A system and method for increasing combustion furnace efficiency, including the steps of providing a furnace with a plurality of secondary air injection ducts, asymmetrically positioned in an tangentially reinforcing manner; injecting fuel with substoichiometric primary air through the burners; injecting secondary air through the plurality of secondary air injection ducts; wherein the velocity of the injected air is such that the ratio of the advected air velocity to the furnace width is between about 2 sec−1 to about 150 sec−1; thereby increasing combustion efficiency and reactor efficiency via mixing and rotation of the combustion space.
    Type: Application
    Filed: March 19, 2003
    Publication date: September 23, 2004
    Inventor: Goran Moberg
  • Publication number: 20040142292
    Abstract: A tangential fired boiler has a circumferential wall defining a combustion zone and a plurality of fuel inlets disposed along the circumferential wall. The plurality of fuel inlets inject fuel at non-uniform rates in order to produce localized fuel rich, oxygen poor zones and fuel lean,-oxygen rich zones within the combustion zone, and to cause ambient boiler gases to be entrained into and mix with the oxygen poor zone to achieve fuel staging of the boiler.
    Type: Application
    Filed: January 16, 2003
    Publication date: July 22, 2004
    Inventors: Lawrence D. Berg, Edmund S. Schindler, Nigel John Garrad, John Joseph Halloran
  • Patent number: 6752620
    Abstract: A symmetric device for stabilization of a flame includes a primary oxidant pipe and a fuel pipe. The fuel pipe is internal to the primary oxidant pipe creating a primary oxidant conduit. A secondary oxidant pipe is internal to the fuel pipe creating a fuel conduit. A primary oxidant source supplies oxidant to the primary oxidant conduit. A fuel source supplies fuel to the fuel conduit. A secondary oxidant source supplies oxidant to the secondary oxidant pipe. The first oxidant velocity is greater than the second oxidant velocity and the fuel velocity is less than the second oxidant velocity. The primary oxidant pipe end extends past the fuel pipe forward end and the fuel pipe forward end extends past the secondary oxidant pipe end. A mismatch in velocity between fuel and oxidant generates a large scale vortex. An asymmetric embodiment is also provided.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: June 22, 2004
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Kevin Ray Heier, Mahendra Ladharam Joshi, Jeannine M. Harris, Mark Daniel D'Agostini, Aleksandar Georgi Slavejkov
  • Patent number: 6736635
    Abstract: The present invention provides a burner for use in a combustion-type waste gas treatment system for combusting waste gases emitted from semiconductor manufacturing system, particularly, a deposition gas containing SiH4 and a halogen-base gas, simultaneously at a high efficiency of destruction, making it difficult for a powder of SiO2 to be attached and deposited, performing a low-NOx combustion, and maintaining a desired level of safety. The combustion-type waste gas treatment system has a flame stabilizing zone (15), which is open toward a combustion chamber (11), surrounded by a peripheral wall (12), and closed by a plate (14) remotely from the combustion chamber. A waste gas, an auxiliary combustible agent, and air are introduced into and mixed with each other in the flame stabilizing zone (15), and the mixed gases are ejected toward the combustion chamber (11) perpendicularly to the plate (14).
    Type: Grant
    Filed: May 1, 2002
    Date of Patent: May 18, 2004
    Assignee: Ebara Corporation
    Inventors: Yoshiro Takemura, Tetsuo Komai, Kotaro Kawamura, Takeshi Tsuji, Kazutaka Okuda, Rikiya Nakamura, Keiichi Ishikawa, Tomonori Ohashi, Yasutaka Muroga, Tadakazu Nishikawa, Yuji Shirao, Hiroyuki Yamada
  • Publication number: 20040081929
    Abstract: This invention, Centrifugal and Divided Space combustion method, need to install a cylindrical fuel pot, the first combustion chamber, the second combustion chamber and an exhaust pot. It also needs to install the upper and the lower pots outside the first combustion chamber and the fuel pot in order to have the lower and the upper air paths inside the outer pots. One or several ventilator(s) to make air-flow is tangentially connected to the upper and the lower air paths at the lower part of the upper outer pot. And several air-flow control devices should be located at the upper part of the upper air path. Thus, the invention is composed to realize the complete combustion only with the air supply into the furnace. In this case, the space in the furnace is divided into many combustive sectors by the air-flow.
    Type: Application
    Filed: November 12, 2003
    Publication date: April 29, 2004
    Inventor: Jiwon Kim
  • Publication number: 20020192608
    Abstract: The present invention relates to a method and to a device intended for spontaneous combustion of a fuel comprising organic, vegetable or mineral materials, the device comprising a combustion chamber, at least one fuel injection means, at least one air inlet, hot fumes discharge means. Chamber (1) comprises a cylindrical shell (11), the discharge means comprise a pipe (6) having the same axis as the chamber and arranged inside said chamber, and fuel injection means (7) is arranged substantially tangential to said cylindrical shell so that the fuel follows a circular motion around said pipe in the chamber.
    Type: Application
    Filed: June 12, 2002
    Publication date: December 19, 2002
    Inventors: Patrick Flament, Pierre Lacaze, Mouloud Hendou, Christophe Teulet
  • Publication number: 20020142256
    Abstract: Methods and apparatus for combustion of a hydrocarbon fuel in a combustion chamber of a furnace or boiler are presented, the combustion normally using only air as an oxidant, part of the air entering the combustion chamber through one or more burners, and a remaining portion of air entering the combustion chamber at a plurality of locations downstream of the burners. The methods comprise injecting oxygen-enriched gas through a plurality of lances into the combustion chamber at a plurality of downstream locations, the oxygen-enriched gas injected at a velocity ranging from subsonic to supersonic, and the oxygen-enriched gas being present in an amount sufficient to provide an oxygen concentration of no more than 2% on a volume basis greater than when air is used alone as oxidant.
    Type: Application
    Filed: March 28, 2001
    Publication date: October 3, 2002
    Inventors: Ovidiu Marin, Benjamin Bugeat, Eric Streicher, Pietro Di Zanno
  • Publication number: 20020001785
    Abstract: A gas generating apparatus is provided which includes a plurality of combustion chambers and a filter chamber. The filter chamber contains a filter which includes a region which is not substantially heated by combustion gases generated by one combustion chamber and which receives combustion gases subsequently generated in another combustion chamber. In this fashion, a high gas cooling efficiency is achieved. The gas generating apparatus has an upwardly-opening vessel-shaped base and a downwardly-opening vessel-shaped cup which when combined form an outer shell of combustion chambers. A filter cap is fixed to the upper side of the cup, thereby defining the filter chamber. A first combustion chamber is positioned outside a pipe through the base and a second combustion chamber is formed inside the pipe. A shim on the inner surface of the filter chamber prevents combustion gases emitted by one combustion chamber entering another combustion chamber.
    Type: Application
    Filed: May 21, 2001
    Publication date: January 3, 2002
    Inventors: Koji Koga, Tsuneo Chikaraishi
  • Patent number: 6270338
    Abstract: The object of the invention is to provide a method for operating a premix burner which has improved operational reliability and functioning during certain types of operation. In addition, it is intended to specify a corresponding premix burner for carrying out the method. According to the invention, this is achieved by the fact that at least one liquid fuel (2) is injected into the inner chamber (9) of the premix burner (4) in a plain jet (26, 26′) with an injection angle &agr; of less than 10°. For this purpose, the liquid-fuel nozzle (17) has a simple injection opening (19) with a guide length (1) and with a diameter (d).
    Type: Grant
    Filed: October 27, 1998
    Date of Patent: August 7, 2001
    Assignee: Asea Brown Boveri AG
    Inventors: Adnan Eroglu, Jaan Hellat, Jakob Keller, Robin McMillan, Roger Suter
  • Patent number: 6263676
    Abstract: A burner for operating an internal combustion machine, a combustion chamber of a gas turbine group or firing installation is described, having at least two hollow half truncated-cone shaped bodies which are assembled within one another in such way that their longitudinal axes of symmetry extend so that they are mutually radially offset and which enclose at least two tangential air inlet slots for a combustion inlet airflow and also enclose a hollow conical space, and having a nozzle arrangement for injecting liquid, highly reactive fuel into the hollow conical space, which nozzle arrangement is located in the region of the narrowest internal diameter of the hollow conical space. The invention is distinguished by the fact that one injection appliance for fuel is respectively provided, in the direction of the combustion airflow, upstream of each of the tangential air inlet slots, which injection appliance injects the fuel into the air inlet slot with a flow direction parallel to the combustion inlet airflow.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: July 24, 2001
    Assignee: Asea Brown Boveri AG
    Inventor: Jakob Keller
  • Patent number: 6237512
    Abstract: An incinerator for waste liquid comprises a container, a burner and an atomizer. An incineration chamber is defined inside the container. The incineration chamber has upper and lower sections, and the container has a vent adjacent to the upper section of the chamber. The burner is connected to the container near the lower section to jet flame into the chamber. The atomizer is connected to the container near the lower section to shoot atomized waste liquid upwardly into the chamber such that waste liquid shot out of the atomizer is directed toward the upper section. A method of incinerating waste liquid comprises the steps of jetting flame into the lower section of an incineration chamber having a vent adjacent to the upper section thereof, and shooting an atomized waste liquid upwardly into the lower section so that the atomized waste liquid is directed toward the upper section.
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: May 29, 2001
    Assignee: Kiyoshi Nakato
    Inventor: Einosuke Inoue
  • Patent number: 6141954
    Abstract: A premixing fuel injector for an industrial gas turbine engine includes an axially extending centerbody (58) and a pair of radially offset scrolls (18) bounding a mixing chamber (24). The leading end (28) of each scroll cooperates with the trailing end (34) of the neighboring scroll to define an intake slot (42) for admitting a stream of primary combustion air (44) tangentially into the mixing chamber. Fuel injection passages extend along each intake slot for injecting jets (76a, 76b) of primary fuel into the incoming airstream (44). The injector is operable in a prescribed or normal state, and in a degraded state associated with the presence of undesirable combustion inside the mixing chamber. The fuel injection passages are oriented and positioned so that the fuel jets issuing therefrom are ineffective at sustaining the undesirable combustion for more than a limited interval of time.
    Type: Grant
    Filed: May 18, 1998
    Date of Patent: November 7, 2000
    Assignee: United Technologies Corporation
    Inventors: William A. Sowa, Donald W. Kendrick, Louis M. Chiappetta
  • Patent number: 6138588
    Abstract: A method of operating a pulverized coal-firing furnace is provided which includes injecting air from an upper compartment generally in opposition to a swirling fireball. The method also provides the step of sensing a temperature characteristic of one side of a convection pass of the furnace. The sensed value, in accordance with the method of the present invention, is then evaluated to determine if the sensed value of the temperature characteristic exceeds an allowable value. In response to a determination that the temperature characteristic exceeds the allowable value, the momentum of the air injected through the upper air compartment is changed. After the step of changing the momentum of the air injected through the upper air compartment, the temperature characteristic of the one convection pass location is sensed to obtain a post adjustment value of the temperature characteristic and compared to an allowable value.
    Type: Grant
    Filed: August 10, 1999
    Date of Patent: October 31, 2000
    Assignee: ABB Alstom Power Inc.
    Inventors: Paul J. Chapman, Michael L. Kaplan, Majed A. Toqan