Duct With Air Whirling Means Surrounds Disperser Patents (Class 431/182)
  • Patent number: 9518740
    Abstract: An axial swirler for a gas turbine burner includes a vane ring with a plurality of swirler vanes circumferentially distributed around a swirler axis. Each of the swirler vanes includes a trailing edge. In order to achieve a controlled distribution of the exit flow velocity profile and/or the fuel equivalence ratio in the radial direction. The trailing edge is discontinuous with the trailing edge having a discontinuity at a predetermined radius.
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: December 13, 2016
    Assignee: GENERAL ELECTRIC COMPANY GMBH
    Inventors: Fernando Biagioli, Naresh Aluri, Madhavan Narasimhan Poyyapakkam, Jan Cerny
  • Patent number: 9395080
    Abstract: The invention relates to a mixture supply system which is adapted for mounting in a hot water appliance and which is adapted to supply a combustible mixture to a burner of the hot water appliance, comprising a fuel feed for a fluid fuel, an oxidizer feed for a fluid oxidizer, a mixing chamber for mixing the fuel and the oxidizer in order to form the combustible mixture, a discharge for discharging the combustible mixture from the mixing chamber and a fan for urging the fuel and oxidizer from the respective feed to the mixing chamber, and urging the mixture therefrom to the discharge, wherein the fan is adapted to act directly on both the fuel and the oxidizer. The fan does not so much make use of an airflow with gas drawn in by a venturi, but gas is supplied separately to the fan.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: July 19, 2016
    Assignee: Intergas Heating Assets B.V.
    Inventor: Peter Jan Cool
  • Patent number: 9194580
    Abstract: The invention describes a burner for a thermal post-combustion device, which has a burner jet arranged in a housing. Arranged on the end region of the housing is a swirl apparatus, through which the exhaust gas to be purified can be made to flow. The burner jet comprises an outer tube and an inner tube, wherein it is possible for combustion gas to be made to flow through the interspace between said two tubes as far as an annular outlet gap in the end region thereof. The flow path for the combustion gas has a bottleneck in the vicinity of the outlet gap. In this way, a compact flame can be achieved, the form of which can be designated “bell-shaped” and which, for a given volume, has a relatively small surface. Although, such a flame has poor CO2 values, the swirl apparatus ensures that the exhaust gas burns in the flame with very low NOx and CO values.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: November 24, 2015
    Assignee: EISENMANN AG
    Inventors: Christof Gminder, Apostolos Katefidis
  • Patent number: 9011141
    Abstract: The invention relates to a burner comprising several substantially concentric channels, one (1) of which is arranged outside of all fuel supply conduits and is delimited by two pipes (2,3), whose axes (4) are placed in a parallel position and which are movable with respect to each other. According to said invention, diverting members (6) used for imparting a tangential component (7) to a fluid flowing in the channel (1) are carried by the first pipe (2) and are fixed thereto, the second pipe (3) comprises a drive portion (9) for driving the fluid outside the diverting members (6) and the angle of tangential deviation of the fluid at the downstream end (8) of the channel (1) depends on the axial position of the second pipe (3) with respect to the first pipe (2).
    Type: Grant
    Filed: June 26, 2006
    Date of Patent: April 21, 2015
    Assignee: EGCI Pillard
    Inventor: Jean-Claude Pillard
  • Patent number: 8920159
    Abstract: An apparatus is provided for combining oxygen and fuel to produce a mixture to be burned in a burner. The oxygen-fuel mixture is ignited in a fuel-ignition zone in a flame chamber to produce a flame.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: December 30, 2014
    Assignee: Honeywell International Inc.
    Inventor: Curtis Taylor
  • Patent number: 8845324
    Abstract: The invention relates to a device for controlling regenerative burners used as a firing device, particularly for iron and steel product heating furnaces or for radiating tubes for continuous strip steel processing lines, according to which the supply of at least one of the fluids involved in the combustion (fuel and comburent) is carried out through a rotary injector (12) rotating by means of a rotatable actuator (M) so as to supply fluid alternately to one and then the other of the burners (B1, B2), the rotary injector (12) being placed on the comburent inlet duct (6), particularly air, and is provided to partially obstruct the supply pipe (19.1; 19.2) to the burner (B1; B2) such that one portion of the fumes from a regenerator (2.2; 2.1) for the non-operating burner (B2; B1) is led to the operating burner (B1; B2) and such that the other portion of the fumes is discharged to the stack.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: September 30, 2014
    Assignee: Fives Stein
    Inventor: Patrice Sedmak
  • Publication number: 20140220501
    Abstract: A burner includes a generally cylindrical reactor chamber (1) including a housing (1?) having a proximal end (1p) and a distal end (1d). In the distal end of the reactor chamber (1) there is provided a catalyst (4). A fuel inlet (7) is provided in the proximal end of the reactor chamber. There are also a plurality of air inlets (22, 23; 24) arranged in the reactor wall at the proximal end. The inlets are configured to provide a rotating flow of the air injected into the reactor chamber. There is also provided a flow homogenizer (8; 30) extending over the cross-section of the reactor chamber at a position between the fuel inlet (7) and the catalyst (4).
    Type: Application
    Filed: September 10, 2012
    Publication date: August 7, 2014
    Applicant: Reformtech Heating Holding AB
    Inventors: Bard Lindstrom, Daniel Hagstrom, Paula Beneyto Satorres, Sara Marie Logdberg
  • Patent number: 8777609
    Abstract: A heater having first and second oxygen depletion sensors and a main burner injector and configurable for the delivery of at least first and second types of fuels.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: July 15, 2014
    Assignee: Coprecitec, S.L.
    Inventor: Ruben Mateos Martin
  • Patent number: 8668489
    Abstract: An ignition system for a multi-burner heat exchanger assembly, a furnace, and a method using same are disclosed. The assembly may include a plurality of adjacent heat exchanger tubes, with a burner associated with each tube. All the burners may be lit with a single igniter and no source of secondary air. To do so, each of the burners may be provided so as to generate a swirling exit flow of combustion gases. One or more carryover tubes may also be connected between adjacent pairs of heat exchanger tubes or adjacent pairs of burners. The swirling flow generated by the burners causes hot combustion gases to move through the carryover tubes to thus carry the flame from one burner to the next. Not only can a single igniter be used, but a single flame sensor as well, while at the same time reducing nitrogen oxide emissions.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: March 11, 2014
    Assignee: Carrier Corporation
    Inventors: Louis Chiappetta, Scott A. Liljenberg, Meredith B. Colket, Shiling Zhang
  • Publication number: 20140004469
    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: Application
    Filed: March 9, 2012
    Publication date: January 2, 2014
    Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes
    Inventors: Patrick Recourt, Remi Tsiava
  • Publication number: 20130344409
    Abstract: A combustor for generating and supplying hot combustion gases to a fuel reformer includes an annular passage defined by a swirler having a central hub and an outer wall. One or more vanes are disposed in the annular passage to impart angular momentum to a gas flowing axially through the annular passage. At least one opening is defined in the central hub for introducing a first fuel into the annular passage, and at least one opening is defined in the outer wall in for introducing a second fuel into the annular passage. In a further aspect of the invention, the fuel introduced into the annular passage through the outer wall is a gaseous fuel, for example effluent gas from a fuel cell, and the fuel introduced into the annular passage through the central hub is a vaporized liquid fuel, for example vaporized diesel fuel.
    Type: Application
    Filed: June 20, 2012
    Publication date: December 26, 2013
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventor: BERNHARD A. FISCHER
  • Publication number: 20130344447
    Abstract: An oil premix burner comprising: a combustion element; a burner surface on the outer lateral surface; a distribution chamber below the burner surface; a central oil injection device; a combustion air channel connected to a blower situated upstream as well as an air heat exchanger for the preheating of the combustion air in the area of the burner surface. In each case, the annular space formed between the inner tube and the outer tube of all the double tube elements opens out into an annular-shaped collecting chamber, and the preheated combustion air, starting from the collecting chamber, flows inwards via a swirl-generating device into the area around the oil injection device into the distribution chamber.
    Type: Application
    Filed: June 19, 2013
    Publication date: December 26, 2013
    Applicant: ROBERT BOSCH GMBH
    Inventors: Antonio MEDEIROS, Raphael LANG, Rainer RAUSCH, Thomas GESCHWEND, Sadik CECEN, Hans-Joachim RIPPLINGER, Thorsten SCHROEDER, Juergen HETCHE
  • Patent number: 8517719
    Abstract: A simple, economical and reliable swirl register [1000] is described for use with a wall burner of a commercial boiler. It employs a number of spaced swirl blocks [1150] that connect side plates [1110, 1120]. A number of moveable vanes [1130] are provided in the air ducts [1155] created between the swirl blocks [1150]. The vanes [1130] are attached to vane rods [1160] that operate the vanes [1130]. The swirl blocks [1150] are lightweight and rigid structures for holding the side plate [1110] a fixed distance from side plate [1120]. The block construction reduces binding of the vanes [1130] as the swirl register [1000] receives differential heating. The vane rods [1160] extend through a windbox front plate [1250] outside of the windbox area. A linkage assembly [1200] rotates the vane rods [1160]. A motor and gearbox [1230] cause all vanes [1130] to rotate the same amount.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: August 27, 2013
    Assignee: ALSTOM Technology Ltd
    Inventor: Oliver G. Briggs, Jr.
  • Patent number: 8506287
    Abstract: An apparatus and process is provided for combining fuel and combustion air to produce a mixture. The mixture is burned in a combustion chamber to produce a flame.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: August 13, 2013
    Assignee: Honeywell International Inc.
    Inventors: Douglas M. Perry, Jeffrey T. Rafter
  • Patent number: 8393893
    Abstract: In order to provide a rotary-furnace burner in which the quantity fraction of cost-effective particulate secondary fuels to be used as energy carriers can be increased and the configuration of the burner flame can be influenced, even during the operation of the burner, it is proposed, according to the invention, to arrange an expansion chamber open towards the burner mouth and having a widened cross section, as compared with the tube or individual tubes in the burner in front of the issue of the tube or tubes for blowing out the secondary fuels, and to make the axial length and the volume of the expansion chamber variable, during the operation of the burner, by means of the axial displacement of the secondary-fuel tubes, so that the particulate secondary fuel particles blown out at the burner mouth with a considerably reduced velocity do not fly past the burner flame, but, instead, burn out in the flame.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: March 12, 2013
    Assignee: KHD Humboldt Wedag GmbH
    Inventors: Ernst Schröder, Alexander Knoch
  • Patent number: 8308477
    Abstract: An apparatus and process is provided for combining fuel and combustion air to produce a mixture. The mixture is burned in a combustion chamber to produce a flame.
    Type: Grant
    Filed: February 28, 2007
    Date of Patent: November 13, 2012
    Assignee: Honeywell International Inc.
    Inventors: Douglas M. Perry, Jeffrey T. Rafter
  • Patent number: 8246345
    Abstract: A burner having an inlet (10) and a mixing path (20) is designed such that the inlet (10) has a rectangular cross section. The mixing path (20) adjacent thereto has a round cross section and a larger diameter, thus forming four transitional steps (25). The transitional steps (25) form four secondary vortices, thus improving the distribution of the fuel in the radial direction. The burner provides combustion with low emission of hazardous substances, and with low emission of nitrogen oxides.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: August 21, 2012
    Assignee: Deutsches Zentrum fur Luft und Raumfahrt E.V.
    Inventors: Harald Schütz, Guido Schmitz
  • Publication number: 20120115098
    Abstract: A whirlwind-type oxidation combustion apparatus for processing semiconductor fabrication exhaust gas is disclosed. An inlet head is set on the top of an exhaust gas processing tank. An exhaust gas passage is set inside the inlet head and connected to an external exhaust gas supply terminal and the exhaust gas processing tank, for guiding the exhaust gas into the exhaust gas processing tank. An ignition chamber is formed between two partitions outside the exhaust gas passage. The two partitions have multiple inclined holes interconnecting an external combustion gas supply terminal, the ignition chamber, and the exhaust gas processing tank. The inclined holes guide a combustion gas to swirl into the exhaust gas processing tank through the ignition chamber. An igniter in the ignition chamber ignites the combustion gas to form a vortex flame which burns the exhaust gas. The exhaust gas is further caused to swirl onto a water screen.
    Type: Application
    Filed: March 5, 2011
    Publication date: May 10, 2012
    Inventor: WU LIANG FENG
  • Patent number: 8113824
    Abstract: A large diameter mid-zone air separation cone is provided for decreasing NOx during burner operation by expanding the internal recirculation zone (IRZ) at the burner exit. The mid-zone air separation cone has a short cylindrical leading edge that fits in the outer air zone of a burner. The mid-zone air separation cone splits the outer air zone secondary air flow into two equal or unequal streams depending on the position of the air separation cone with respect to the outer air zone, and deflects a portion of the secondary air flow radially outward. Since the radial position of the air separation cone is farther from the burner centerline, the IRZ size is expanded and NOx emissions are minimized.
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: February 14, 2012
    Inventors: Hamid Sarv, Albert D. LaRue, William J. Kahle, Alan N. Sayre, Daniel R. Rowley
  • Patent number: 8096803
    Abstract: Apparatus for enhancing combustion of an undesired chemical to minimize the formation of smoke during operation of a flare stack for the discharge of a flare feedstream includes a plurality of high-pressure air nozzles spaced apart below and around the periphery of the stack outlet. Each nozzle is directed toward the stack outlet and in the direction of the feedstream's movement. High-pressure air from the nozzles forms a plurality of high-velocity air jets to produce a moving air mass that draws additional atmospheric air into the air mass moving toward the stack outlet to enhance combustion of the flare feedstream. Analytical means determine the stoichiometric oxygen requirements, and an air-flow valve controls the flow rate of the high-pressure air to the nozzles.
    Type: Grant
    Filed: February 7, 2008
    Date of Patent: January 17, 2012
    Assignee: Saudi Arabian Oil Company
    Inventors: Mazen Mashhour, M. Rashid Khan
  • Patent number: 8033821
    Abstract: A premix burner is provided, with a swirl generator and a downstream mixer tube for combusting gaseous and liquid fuel which during entry of combustion air is introduced into the burner interior space of the swirl generator and/or is introduced into the burner interior of the swirl generator on a burner axis, and also with a fuel lance which is arranged on the burner axis. The premix burner, in the transition section from the swirl generator to the mixer tube, includes at least one additional feed for introducing gaseous and/or liquid premix fuel from the wall region into the burner interior space of the mixer tube.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: October 11, 2011
    Assignee: Alstom Technology Ltd.
    Inventor: Adnan Eroglu
  • Patent number: 8002541
    Abstract: A burner has a port facing into a combustion chamber along an axis. A secondary fuel injector structure has secondary fuel injection ports that face into the combustion chamber at locations spaced radially outward from the burner port. A tertiary fuel injector structure has tertiary fuel injection ports that face into the combustion chamber in directions perpendicular to the axis at locations spaced axially downstream from the secondary fuel injection ports.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: August 23, 2011
    Assignee: Fives North American Combustion, Inc.
    Inventors: Thomas B. Neville, John J. Nowakowski, Mark C. Hannum, Thomas F. Robertson
  • Publication number: 20110136067
    Abstract: A fuel nozzle for imparting swirl to a fuel/fuel-air mixture is provided. The fuel nozzle includes a holding unit and a nozzle insert, wherein the holding unit and the nozzle insert form a flow path and subsequently a swirl chamber, wherein the nozzle insert includes an inlet start and an inlet end. The inlet start and the inlet end are bent in a substantially circular manner such that an unbroken circle is formed, such that a fuel flowing into the swirl chamber has imparted to it a radially inwardly directed circular, in particular spiral movement. A burner and a gas turbine are also provided.
    Type: Application
    Filed: May 14, 2009
    Publication date: June 9, 2011
    Inventor: Thomas Grieb
  • 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: 7914282
    Abstract: Apparatus for reducing pollution from a flare stack includes a platform disposed on or near the top of the flare stack and a plurality of baffles and filters disposed on the platform. A first plurality of upwardly extending stainless steel baffles is disposed around the flare stack while a second plurality of baffles is disposed about the outer periphery of the platform. A first and a second plurality of filters are disposed between the first and second plurality of baffles. The first plurality of filters associated with a fan, blower or pump for drawing flare gas into and out of the filter.
    Type: Grant
    Filed: January 4, 2007
    Date of Patent: March 29, 2011
    Inventors: Khaled Jafar Al-Hasan, Ahmad Mohammad Al-Ali
  • Patent number: 7878001
    Abstract: A fuel nozzle 110 having a plurality of swirl vane 130 on an outer peripheral surface thereof is installed within a burner tube 120, with a clearance 121 being provided. Each swirl vane 130 progressively curves from an upstream side toward a downstream side (inclines along a circumferential direction) in order to swirl compressed air A flowing through an air passage 111 to form a swirl air flow a. Here, curvature of each swirl vane 130 is greater on its outer peripheral side than on its inner peripheral side. By suppressing occurrence of an air streamline heading from the inner peripheral side toward the outer peripheral side, therefore, flow velocity on the inner peripheral side and flow velocity on the outer peripheral side become equal, thus preventing flashback on the inner peripheral side.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: February 1, 2011
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Koichi Ishizaka, Eisaku Ito, Satoshi Tanimura
  • Publication number: 20100190119
    Abstract: An apparatus and process is provided for combining fuel and combustion air to produce a mixture. The mixture is burned in a combustion chamber to produce a flame.
    Type: Application
    Filed: April 1, 2010
    Publication date: July 29, 2010
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Douglas M. Perry, Jeffrey T. Rafter
  • Publication number: 20100183991
    Abstract: A method for operating a premixing burner is provided. The premixing burner includes a premixing zone. An air mass flow and fuel may be injected into the premixing zone, and a potential hot gas backflow area may form. A fluid containing no fuel is injected downstream from the fuel injection into the premixing zone in order that a hot gas backflow area does not form. A premixing burner including a premixing zone is also provided.
    Type: Application
    Filed: July 23, 2008
    Publication date: July 22, 2010
    Inventors: Berthold Köstlin, Martin Lenze, Bernd Prade
  • Patent number: 7753677
    Abstract: Burners in prior art exhibit combustion instabilities in certain ranges. The operating range of burners is restricted by said instabilities. In an inventive burner, the combustible has a concentration distribution, whereby the concentration of the combustible reduces in a radial direction from the interior to the exterior.
    Type: Grant
    Filed: August 20, 2003
    Date of Patent: July 13, 2010
    Assignee: Siemens Aktiengesellschaft
    Inventors: Peter Berenbrink, Malte Blomeyer, Werner Krebs, Bernd Prade, Holger Streb
  • Publication number: 20100071373
    Abstract: A pilot burner (150, 350) for a gas turbine engine delivers an inner non-swirling fuel-oxidant mixture surrounded by an outer swirling fuel-oxidant mixture, thereby providing enhanced mixing with no recirculation zone. At least one fluid-restricting inlet port (166, 366) provides an oxidant to an inner mixing passage (160, 360). The inner mixing passage (160, 360) includes a plurality of fuel outlets (168). An outer annular mixing passage (180) receives oxidant from an upstream port (181) surrounding the inner mixing passage and includes at least one swirler element (186, 386) and fuel outlets (188).
    Type: Application
    Filed: September 19, 2008
    Publication date: March 25, 2010
    Applicant: SIEMENS POWER GENERATION, INC.
    Inventors: Scott M. Martin, Robert J. Bland, Anil Gulati
  • Publication number: 20090226852
    Abstract: A burner assembly for lean, low NOx combustion may include a gaseous fuel manifold, counter-swirl vanes, and a converging nozzle with bluff body flame anchors. A cooling air tube optionally extends from the air inlet to the nozzle.
    Type: Application
    Filed: March 7, 2008
    Publication date: September 10, 2009
    Inventors: James J. Feese, Bruce A. Wartluft, Jacob W. Mattern
  • Publication number: 20090208889
    Abstract: The invention relates to a burner comprising several substantially concentric channels, one (1) of which is arranged outside of all fuel supply conduits and is delimited by two pipes (2,3), whose axes (4) are placed in a parallel position and which are movable with respect to each other. According to said invention, diverting members (6) used for imparting a tangential component (7) to a fluid flowing in the channel (1) are carried by the first pipe (2) and are fixed thereto, the second pipe (3) comprises a drive portion (9) for driving the fluid outside the diverting members (6) and the angle of tangential deviation of the fluid at the downstream end (8) of the channel (1) depends on the axial position of the second pipe (3) with respect to the first pipe (2).
    Type: Application
    Filed: June 26, 2006
    Publication date: August 20, 2009
    Inventor: Jean-Claude Pillard
  • Publication number: 20080299506
    Abstract: A steam generator gas burner for burning gases of low calorific value comprises a core air tube, a gas tube arranged coaxially around the core air tube to form a gas flow cross section, at least one further tube element arranged coaxially around the gas tube to form a secondary air flow cross section and first swirlers being arranged in the gas flow cross section. The first swirlers are adjustably arranged to allow for the steam generator gas burner to adjust to varying properties of the combustible gas, in particular a fluctuating calorific value, while taking into consideration the respective ignition intensity.
    Type: Application
    Filed: May 23, 2008
    Publication date: December 4, 2008
    Inventors: Bernhard ZIMMERMANN, Robert Melchior, Klaus Mangelmans
  • Publication number: 20080280242
    Abstract: A burner assembly including a housing having an air inlet, a burner end having an opening, a longitudinal axis extending generally from the air inlet toward the burner end, a motor, an impeller mounted in the housing and being in fluid communication with the air inlet, operatively connected to the motor and adapted to direct air from the air inlet toward the burner end, a coal tube adapted to convey coal toward the burner end, a coal inlet adapted to convey coal to the coal tube, a first bluff body ring, a second bluff body ring and a third bluff body ring mounted at the burner end, a flame bridge disposed between the first bluff body ring and the second bluff body ring, and an igniter mounted in the burner end and being adapted to ignite the air and fuel mixture in the burner end to produce a main flame.
    Type: Application
    Filed: July 20, 2007
    Publication date: November 13, 2008
    Inventors: Malcolm L. Swanson, Michael S. Swanson, Russell W. Fountain, William Eric Wattenbarger, Andrew Hobbs, Kelly Knight
  • Publication number: 20080280239
    Abstract: A method and a device for combusting gaseous fuel which contains hydrogen or consists of hydrogen, includes a burner which provides a swirl generator (1) into which liquid fuel is feedable centrally along a burner axis (A), forming a liquid fuel column which is conically formed and which is enveloped by, and mixed through with, a rotating combustion air flow which flows tangentially into the swirl generator (1). The gaseous fuel is fed inside the swirl generator (1) largely axially and/or coaxially to the burner axis (A), forming a fuel flow with a largely spatially defined flow pattern (9) which is maintained inside the burner and bursts open in the region of the burner outlet.
    Type: Application
    Filed: May 23, 2007
    Publication date: November 13, 2008
    Inventors: Richard Carroni, Timothy Griffin
  • Patent number: 7430970
    Abstract: A new burner apparatus and method of combusting fossils fuels for commercial and industrial application is provided wherein the new burner apparatus achieves low NOx emissions by supplying oxygen to the center of the burner flame in as manners so as to create a fuel rich internal combustion zone within the burner flame.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: October 7, 2008
    Inventors: Albert D. LaRue, Alan N. Sayre, William J. Kahle, Hamid Sarv, Daniel R. Rowley
  • Patent number: 7402038
    Abstract: A burner has a port facing into a combustion chamber along an axis. A secondary fuel injector structure has secondary fuel injection ports that face into the combustion chamber at locations spaced radially outward from the burner port. A tertiary fuel injector structure has tertiary fuel injection ports that face into the combustion chamber in directions perpendicular to the axis at locations spaced axially downstream from the secondary fuel injection ports.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: July 22, 2008
    Assignee: The North American Manufacturing Company, Ltd.
    Inventors: Thomas B. Neville, John J. Nowakowski, Mark C. Hannum, Thomas F. Robertson
  • Publication number: 20080148736
    Abstract: A fuel nozzle 110 having a plurality of swirl vane 130 on an outer peripheral surface thereof is installed within a burner tube 120, with a clearance 121 being provided. Each swirl vane 130 progressively curves from an upstream side toward a downstream side (inclines along a circumferential direction) in order to swirl compressed air A flowing through an air passage 111 to form a swirl air flow a. Here, curvature of each swirl vane 130 is greater on its outer peripheral side than on its inner peripheral side. By suppressing occurrence of an air streamline heading from the inner peripheral side toward the outer peripheral side, therefore, flow velocity on the inner peripheral side and flow velocity on the outer peripheral side become equal, thus preventing flashback on the inner peripheral side.
    Type: Application
    Filed: June 2, 2006
    Publication date: June 26, 2008
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Koichi Ishizaka, Eisaku Ito, Satoshi Tanimura
  • Patent number: 7267809
    Abstract: The invention relates to a burner with a burner head (1) and a gas feed pipe (2) that is located in the burner head (1) and that is surrounded by an ring channel (3) for feed of another gas. In the gas feed pipe (2) and in the ring channel (3), there are means (10, 11) for producing a swirl of the gas flowing through the gas feed pipe (2) and that flowing through the ring channel (3).
    Type: Grant
    Filed: October 18, 2001
    Date of Patent: September 11, 2007
    Assignee: The Linde Group
    Inventors: Harald Ranke, Michael Heisel, Sebastian Muschelknautz, Hanno Tautz
  • Patent number: 7229483
    Abstract: A method for gasifying carbonaceous materials to fuel gases comprises the formation of an ultra-superheated steam (USS) composition substantially containing water vapor, carbon dioxide and highly reactive free radicals thereof, at a temperature of about 2400° F. (1316° C.) to about 5000° F. (2760° C.). The USS composition comprising a high temperature clear, colorless flame is contacted with a carbonaceous material for rapid gasification/reforming thereof. The need for significant superstoichiometric steam addition for temperature control. Methods for controlling a gasification/reforming system to enhance efficiency are described. A USS burner for a fluidized bed gasification/reforming reactor, and methods of construction, are described.
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: June 12, 2007
    Inventor: Frederick Michael Lewis
  • Patent number: 7108730
    Abstract: This invention relates to a method for providing controlled heat to a process utilizing a flameless distributed combustion.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: September 19, 2006
    Assignee: Shell Oil Company
    Inventors: Rashmi K Shah, Thomas Mikus, Pettai Krishna Shankar
  • Patent number: 7051530
    Abstract: The invention relates to a burner apparatus (1) for burning fuel (5) with air (4) to combustion gas, in particular within a combustion turbine, comprising a premixing chamber (3) for premixing fuel (5) and air (4) with. The premixing chamber (3) having an air inlet (8) for air (4) to enter said premixing chamber (3), a fuel inlet (11) for a gaseous or liquid fuel (5) to enter said premixing chamber (3), and an outlet (12) for a mixture of air (4) an fuel (5) wherein, the fuel inlet (11) being located between said air inlet (8) and said outlet (12). The burner apparatus (1) Further comprises at least one air blocking member (2) situated at the air inlet (8) for stabilising a burner premixing flame by locally blocking the flow of air (4) entering said premixing chamber (3) so that downstream said outlet (12) a locally inhomogeneous fuel concentration (23) results generating a locally hot stream of combustion gas being hotter than the average flame temperature.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: May 30, 2006
    Assignee: Siemens Aktiengesellschaft
    Inventor: Malte Blomeyer
  • Patent number: 6981866
    Abstract: A burner for a thermal post-combustion device comprises a combustion nozzle, which comprises a substantially hollow-cylindrical base member (1) at least virtually closed at one end by a cover (2). Fuel gas is supplied thereto axially at a particular pressure. The fuel gas flows out radially via main discharge openings (8) of the combustion nozzle. These main discharge openings (8) are at such a radial distance from the axis of the base member (1) and exhibit such a cross-section that, at the particular pressure of the supplied fuel gas, individual flames form at the main discharge openings (8) which substantially do not overlap. While maintaining the same total burner power, in this way the individual flames remain colder than in known burners, which produce a cohesive ball of flame instead of individual flames.
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: January 3, 2006
    Assignee: Eisenmann Maschinenbau KG (Komplementar: Eisenmann-Stiftung)
    Inventor: Apostolos Katefidis
  • Patent number: 6969249
    Abstract: A swirl-type internal flame recirculation burner apparatus and method as used to fire asphalt plant aggregate dryers, air heaters and calcining kilns and method includes a compressed air oil atomizer assembly. The burning and swirling fuel and primary main combustion air mixture recirculates upstream along the burner axis. The secondary main combustion air may be swirled. The burner may also be fired on gas or a combination of gas and oil.
    Type: Grant
    Filed: May 2, 2003
    Date of Patent: November 29, 2005
    Assignee: Hauck Manufacturing, Inc.
    Inventors: John A. Marino, James J. Feese, Raymond F. Baum
  • Patent number: 6968692
    Abstract: A fuel-air premixing module is designed to reduce emissions from a gas turbine engine. In one form, the premixing module includes a central pilot premixer module with a main premixer module positioned thereround. Each of the portions of the fuel-air premixing module include an axial inflow swirler with a plurality of fixed swirler vanes. Fuel is injected into the main premixer module between the swirler vanes of the axial inflow swirler and at an acute angle relative to the centerline of the premixing module.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: November 29, 2005
    Assignee: Rolls-Royce Corporation
    Inventors: Jushan Chin, Nader K. Rizk, Mohan K. Razdan, Andre W. Marshall
  • Patent number: 6969250
    Abstract: A waste gas treatment system having a burner part and a combustion chamber provided at a downstream side of the burner part. Combustion flames are formed from the burner part toward the combustion chamber, and a waste gas is introduced into the combustion flames, thereby oxidatively decomposing the waste gas. The combustion chamber is formed from an inner wall made of a fiber-reinforced ceramic material. Therefore, the wear of the inner wall due to heat and corrosion is minimized, and thermal stress cracking is also reduced. Consequently, the lifetime of the system increases, and the cost of equipment and the availability factor can be improved. In addition, because the inner wall exhibits no catalytic effect, the formation of thermal NOx is suppressed, and it is possible to achieve environmental preservation and to simplify the treatment equipment.
    Type: Grant
    Filed: November 29, 1999
    Date of Patent: November 29, 2005
    Assignee: Ebara Corporation
    Inventors: Kotaro Kawamura, Rikiya Nakamura, Yuji Shirao, Yoshiro Takemura, Kazutaka Okuda, Takeshi Tsuji
  • Patent number: 6901760
    Abstract: An aerodynamically stabilized premixing burner includes a swirl generator for the production of a rotating combustion air flow, and a device for the introduction of at least one fuel into this combustion air flow. The burner is advantageously provided with a device for the introduction of an axial air flow into the center of the generated rotational flow. This axial air flow is controllable in order to affect the position and intensity of the flame-stabilizing recirculation zone at the burner mouth.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: June 7, 2005
    Assignee: Alstom Technology LTD
    Inventors: Rolf Dittmann, Christian Steinbach
  • Patent number: 6890498
    Abstract: A gas burner for use with a Claus furnace made up of at least five concentric tubes and the spaces formed between them. The diameters of the tubes increase radially outward so that the first tube has a smaller diameter than the fifth tube. At the end of the burner closest to the furnace, the tube ends of the third, fourth, and fifth tubes lie in the same plane. The first and the second tubes are fastened together and capable of movement along the central longitudinal axis of the burner, but their ends closest the furnace are not capable of moving past the plane formed by the third, fourth, and fifth tubes. An injector is located between the first and second tubes at the end closest the furnace. The injector is oriented towards the periphery of the burner.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: May 10, 2005
    Assignee: L'Air Liquide, Société Anonyme á Directorie et Conseil de Surveillance pour l'Etude et l'Exploitation des Procédés Georges Claude
    Inventors: Rémi Pierre Tsiava, Manuel Binoist, Benoit Grand, Richard Soula, Denis Cieutat
  • Patent number: 6834504
    Abstract: The invention relates to a premix burner with high flame stability for use in a heat generator, preferably in the combustion chamber of a gas turbine. Modern, lean-operated premix burners enable very low noxious emissions, but sometimes operate very close to the extinction limit. To increase the stability of the lean premix combustion by increasing the distance between flame temperature and extinction limit temperature the invention proposes to equip the burner in the mixing zone (200) with a net-like structure (201) for the premixing of combustion air and fuel. According to a preferred embodiment, the net-like structure (201) consists of a plurality of layers of individual wire mesh fabrics (202) arranged at a distance from each other. The wire mesh fabrics (202) are preferably equipped with an oxidation-promoting, catalytically active surface.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: December 28, 2004
    Assignee: Alstom Technology LTD
    Inventors: Timothy Griffin, Peter Jansohn, Thomas Ruck
  • Patent number: 6832481
    Abstract: A performance-enhancing fuel nozzle is disclosed. The nozzle suitable for use in combustors which combine high-swirl-number combustion in a pilot zone with low-swirl-number combustion in a main combustion zone. The nozzle includes a fuel delivery member adapted for fluid communication with a fuel source and a flow conditioning member having a fuel exit port. The fuel exit port is in fluid communication with the fuel supply and is adapted to ensure that the recirculation region adjacent the nozzle tip remains flame free. In one aspect of the invention, the fuel concentration profile of the nozzle is characterized by a radially-outward region that is flammable and a radially-inward region that is substantially non-flammable. In another aspect of the invention, the fuel exit port being is disposed a radially-outward portion of the flow conditioning member. In another aspect of the invention, the flow conditioning member is characterized by a swirl number lower than about 0.5.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: December 21, 2004
    Assignee: Siemens Westinghouse Power Corporation
    Inventors: Michael Herbert Koenig, Bernd Prade