Spaced Fuel Dispersing Orifices Within Furnace Patents (Class 431/174)
  • Patent number: 9810425
    Abstract: A pulverized coal burner for an oxyfuel combustion boiler which attains uniform combustion from a pulverized coal burner and which constrains a temperature rise of an oxygen injection nozzle is provided. The burner includes burner inner and outer cylinders arranged to penetrate a wind box and come close to a throat portion. A pulverized coal feed passage is provided between the burner inner and outer cylinders. A plurality of oxygen injection devices are arranged outwardly of the burner outer cylinder so as to directly feed oxygen ahead of the burner outer cylinder.
    Type: Grant
    Filed: March 6, 2008
    Date of Patent: November 7, 2017
    Assignees: IHI Corporation, ELECTRIC POWER DEVELOPMENT CO., LTD.
    Inventors: Shuuhei Terushita, Toshihiko Yamada, Shuzo Watanabe, Terutoshi Uchida
  • Publication number: 20150099233
    Abstract: A combustion system comprises a combustion chamber and a flue gas duct located downstream of the combustion chamber to receive combustion products from the combustion chamber, the combustion chamber has a base and an enclosing wall connecting the base to the flue gas duct. The combustion chamber is provided with a plurality of combustion devices, the combustion devices being configured to deliver fuel and gas and/or air into the combustion chamber so as to generate a fireball within a combustion zone in the combustion chamber, the combustion devices further being configured such that the generated fireball rotates about an axis extending between the base and the flue duct. A secondary gas and/or air nozzle is provided in the base of the combustion chamber, at a location upstream of the combustion zone, the nozzle being for delivering gas and/or air into the combustion zone in a direction towards the flue duct.
    Type: Application
    Filed: October 8, 2014
    Publication date: April 9, 2015
    Inventors: John GOLDRING, Steven BILLETT, Lawrence BERG
  • Patent number: 8961170
    Abstract: A pulverized coal thermal power generation system that significantly reduces the amount of NOx emissions from a boiler and does not require a denitration unit is provided. When a denitration unit is not used, performance to remove mercury from a boiler waste gas is reduced. A waste gas purification system for a pulverized coal boiler, that compensates for this is provided. A pulverized coal boiler having a furnace for burning pulverized coal, burners for supplying pulverized coal and air used for combustion into the furnace so as to burn the pulverized coal in an insufficient air state and after-air ports provided on the downstream side of the burners for supplying air used for perfect combustion characterized in that, an air ratio in the furnace is 1.05 to 1.14, and the residence time of a combustion gas from the burner disposed on the uppermost stage to a main after-air port is 1.1 to 3.3 seconds.
    Type: Grant
    Filed: May 14, 2008
    Date of Patent: February 24, 2015
    Assignee: Babcock-Hitachi K.K.
    Inventors: Hisayuki Orita, Masayuki Taniguchi, Akihito Orii, Yuki Kamikawa, Hirofumi Okazaki
  • Publication number: 20150000343
    Abstract: A submerged burner for a glass- or rock-melting furnace, including a plurality of in-line injectors, each injector including a cylinder-shaped mixing chamber, with an ejection orifice, a fuel-supply duct and an oxidant-supply duct opening into the mixing chamber at the cylinder jacket in a direction causing a tangential flow of the fuel and of the oxidant relative to the cylinder jacket, and a duct system making it possible for a coolant to flow inside the burner, and, preferably on either side of the alignment of injectors, placed parallel to and all along the latter, solid metal sides rising from the injectors, and protective partitions situated on the top of the solid metal sides.
    Type: Application
    Filed: February 5, 2013
    Publication date: January 1, 2015
    Applicant: Saint-Gobain Isover
    Inventors: Yannick Lefrere, Julien Marie, David Galley, Sebastien Chesnel, Frederic Lopepe, Oleg Boulanov
  • Patent number: 8915731
    Abstract: A burner has a fuel/oxidant nozzles and a pair of dynamical lances spaced on either side thereof that inject a jet of fuel and primary oxidant along a fuel injection axis, and jets of secondary oxidant, respectively. Jets of actuating fluid impinge against the jets of secondary oxidant to fluidically angle the jets of secondary oxidant away from the fuel injection axis. The action of the angling away together with staging of the oxidant between primary and secondary oxidant injections allows achievement of distributed combustion conditions.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: December 23, 2014
    Assignees: L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude, American Air Liquide, Inc., Air Liquide Advanced Technologies, U.S. LLC
    Inventors: Taekyu Kang, Vivek Gautam, Rajeev S. Prabhakar, Benoit Grand, Bertrand Leroux, Magnus Mortberg, Nicolas Docquier
  • Publication number: 20140356795
    Abstract: An oil-fired burner (30A) for warming, disposed adjacent to the outer periphery of a pulverized coal burner which inputs pulverized coal and air into a furnace, includes: an oil gun (32) for inputting an oil fuel disposed at the center of an outlet opening of a nozzle main body (31) substantially rectangular in cross-section; and a secondary air input port (40) disposed so as to surround the outer periphery of the oil gun (32), wherein the secondary air input port (40) is constituted of: a central arc section (41) substantially similar in shape to a circular diffuser (34) mounted on the leading end side of the oil gun (32); and rectangular sections (42L, 42R) provided continuously from both sides of the central arc section (41) and narrowed in face-to-face dimension in the direction of the adjacent pulverized coal burners so as to increase the distance from them.
    Type: Application
    Filed: October 31, 2012
    Publication date: December 4, 2014
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Keigo Matsumoto, Kazuhiro Domoto, Naofumi Abe, Jun Kasai
  • Publication number: 20140272736
    Abstract: A low NOx combustion method includes steps of injecting reactants into a combustion chamber. A primary reactant stream, including fuel and combustion air premix, is injected from a premix burner port into the combustion chamber. A staged fuel stream is injected into the combustion chamber from a staged fuel injector port adjacent to the premix burner port. A stream of recirculated flue gas is injected into the combustion chamber from a flue gas injector port that is adjacent to the premix burner port and adjacent to the staged fuel injector port. In this manner, the stream of recirculated flue gas is injected into the combustion chamber unmixed with the primary reactant stream and unmixed with the staged fuel stream.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: Thomas F. Robertson, Bruce E. Cain, John J. Nowakowski, Mark C. Hannum
  • Publication number: 20140272737
    Abstract: A primary reactant stream is injected from a burner port into a combustion chamber along an axis. Staged reactant streams are injected into the combustion chamber adjacent to the primary reactant stream in differing configurations. The differences between the configurations of the staged reactant streams include differences in radial distance from the burner port, axial distance from the burner port, and direction relative to the axis. The reactant streams are shifted between differing modes, with differences between the modes including the presence or absence of a flame at the burner port, differences in fuel flow rates, and differences in combustion air flow rates. A heat release profile developed by combustion of the primary reactant stream, or the length of a flame developed by combustion of the primary reactant stream, can be controlled by shifting between the differing modes with reference to the heat release profile or the length of the flame.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: Thomas F. Robertson, Bruce E. Cain, John J. Nowakowski, Mark C. Hannum
  • Patent number: 8784096
    Abstract: An air-fuel burner includes a heat-transfer tube, an air-fuel mixing chamber, and an air-fuel nozzle. The air-fuel nozzle is coupled to the air-fuel chamber to communicate a combustible air-fuel mixture into a combustion chamber defined between the air-fuel nozzle and the heat-transfer tube. The combustible air-fuel mixture, when ignited, establishes a flame in the combustion chamber to produce heat which is transferred through heat-transfer tube to an adjacent medium external to the heat-transfer tube.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: July 22, 2014
    Assignee: Honeywell International Inc.
    Inventor: Pawel Mosiewicz
  • Publication number: 20140144353
    Abstract: The invention relates to a solid fired hot gas generator which comprises a plurality of solid burners for extending the regulating range, which form a multiple solid burner with an enlarged regulating range. A solid feed and a combustion air feed are assigned to each solid burner and with the aid of a dosing means a separate, dosed solid feed to each solid burner is guaranteed. The firing power of the multiple solid burner which is in particular a multiple impulse burner extends from the minimum power of one of the solid burners to the maximum power of all solid burners so that a regulation of all necessary load regions of a plant unit to be supplied is covered.
    Type: Application
    Filed: September 16, 2010
    Publication date: May 29, 2014
    Applicant: LOESCHE GMBH
    Inventors: Klaus Kasseck, Holger Wulfert, Andre Baetz
  • Publication number: 20140116359
    Abstract: A burner including a fuel-containing fluid supply nozzle which supplies a fuel-containing fluid, from a connecting part in a fluid transfer flow passage for transferring a fuel-containing fluid including a fuel and a medium for transfer of the fuel, toward an outlet part provided on a furnace wall surface. The nozzle in its cross section perpendicular to the direction of flow of the fluid has a rectangular, elliptical, or substantially elliptical form having major and minor axis parts from a connecting part in the fluid transfer flow passage toward the outlet part provided on the furnace wall surface. Further, the area of a cross section perpendicular to the direction of flow of the fluid is gradually increased from the connecting part in the fluid transfer flow passage toward the outlet part. Air supply nozzle(s) for supplying combustion air are provided on the outer peripheral part of the nozzle.
    Type: Application
    Filed: December 24, 2013
    Publication date: May 1, 2014
    Applicant: BABCOCK-HITACHI KABUSHIKI KAISHA
    Inventors: Kenji KIYAMA, Akira BABA, Takanori YANO, Osamu OKADA, Hirofumi OKAZAKI, Kouji KURAMASHI
  • Patent number: 8695515
    Abstract: A method for burning raw materials by which method the raw material and a secondary fuel are separately introduced to one and the same rotary kiln in which the raw material as well as the secondary fuel are heated by gases formed by burning of a primary fuel in the rotary kiln so that the secondary fuel is converted to gases and solid matter in the form of combustion residues such as ashes and coke. The secondary fuel during the process of conversion to gases and solid matter is kept separate from the introduced raw material, which may ensure that the secondary fuel and hence the locally reducing zones and major areas with reducing conditions are brought into minimum contact with the raw material.
    Type: Grant
    Filed: September 2, 2009
    Date of Patent: April 15, 2014
    Assignee: FLSmidth A/S
    Inventors: Lars Skaarup Jensen, Niels Agerlund Christensen, Morten Boberg Larsen
  • Patent number: 8696349
    Abstract: The invention relates to a method for the combustion of a fuel using an oxygenated gas, in which a jet of fuel and at least two jets of oxygen-rich oxygenated gas are injected. According to the invention, the first jet of oxygen-rich oxygenated gas, known as the primary jet, is injected such as to be in contact with the jet of fuel and to produce a first incomplete combustion, the gases produced by said first combustion comprising at least one part of the fuel, and the second jet of oxygen-rich oxygenated gas is injected at a distance I1 from the jet of fuel such as to combust with a first part of the fuel present in the gases produced by the first combustion. Moreover, a low-oxygen oxygenated gas is injected at a distance I2 from the jet of fuel such as to combust with a second part of the fuel present in the gases produced by the first combustion, I2 being greater than I1.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: April 15, 2014
    Assignee: L'Air Liquide, Société Anonyme pour l'Étude et l'Éxploitation des Procédés Georges Claude
    Inventors: Bertrand Leroux, Remi Pierre Tsiava, Patrick Jean-Marie Recourt, Benoit Grand, Pascal Duperray, Loic Sylvestre, Mohand Amirat
  • Patent number: 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
  • Publication number: 20130340659
    Abstract: In a boiler having plurality of burners arranged on a furnace wall of a furnace, each burner includes a cylindrical fuel nozzle for injecting a mixture of fuel and carrier gas therefor into the furnace; one or more cylindrical air nozzles provided on the outer circumference of the nozzle for injecting combustion air into the furnace, and a wind box for supplying combustion air to the nozzles in common. The wind box is provided with openings through which combustion air flows in from one direction perpendicular to the axial direction of the burner, and is partitioned by a partition wall to form plurality of parallel flow paths for the air flowing in through the openings. Some of the plurality of flow paths are connected to an upper part of the combustion air nozzle, and the other flow paths are connected to a lower part of the nozzle.
    Type: Application
    Filed: February 22, 2011
    Publication date: December 26, 2013
    Applicant: BABCOCK-HITACHI KABUSHIKI KAISHA
    Inventors: Yusuke Ochi, Kouji Kuramashi, Kenji Kiyama, Hirofumi Okazaki
  • Patent number: 8597021
    Abstract: An apparatus and method for the creation, placement and control of an area of electrical ionization within an internal combustion engine combustion chamber or a fuel burner is disclosed. A furnace includes a fuel source, a fuel burner, a plasma nozzle and igniter assembly, and the associated housing and flue structures. The plasma nozzle and igniter assembly is arranged so that the fuel sprayed out from the nozzle into the combustion area passes through or in close proximity to the area of plasma ionization. A fuel burner equipped with this electrical ionization device has its fuel efficiency enhanced by the complete and immediate combustion of substantially all of the fuel that passes through the area of plasma ionization. Exhaust gas recirculation using this system is also disclosed.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: December 3, 2013
    Inventor: Michael E. Jayne
  • Publication number: 20130255548
    Abstract: According to embodiments, a co-fired or multiple fuel combustion system is configured to apply an electric field to a combustion region corresponding to a second fuel that normally suffers from poor combustion and/or high sooting. Application of an AC voltage to the combustion region was found to increase the extent of combustion and significantly reduce soot evolved from the second fuel.
    Type: Application
    Filed: December 30, 2012
    Publication date: October 3, 2013
    Applicant: CLEARSIGN COMBUSTION CORPORATION
    Inventors: DAVID B. GOODSON, CHRISTOPHER A. WIKLOF
  • Patent number: 8544422
    Abstract: A fired heater has two types of burners. The first burner is located in a duct which provides oxygen-containing gas to the heater to be combusted with the fuel provided by the burner. The second burner is located in the heater and provides both air and fuel for combustion. The heater may be located downstream of a gas turbine engine that cogenerates electricity and provides the oxygen-containing gas.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: October 1, 2013
    Assignee: UOP LLC
    Inventors: Gavin P. Towler, Randy S. Stier, Christopher Naunheimer
  • Publication number: 20130224669
    Abstract: Disclosed herein is a method of controlling the air to fuel ratio in a burner containing a venturi assembly. The venturi includes an air inlet, a primary fuel inlet with a converging section, a throat portion downstream from the converging section, a diverging section downstream from the throat portion, an outlet, and a secondary gas inlet disposed downstream from the converging section and upstream from the outlet. The method comprises introducing fuel into the fuel inlet, receiving air through the air inlet by inspiration, and feeding a gas through the secondary gas inlet, the flow rate and content of the gas fed through the secondary gas inlet being selected to result in a desired air to fuel ratio through the outlet. A method of firing a heater, a burner, a furnace and firing control systems also are disclosed.
    Type: Application
    Filed: March 25, 2013
    Publication date: August 29, 2013
    Applicant: Lummus Technology Inc.
    Inventor: Lummus Technology Inc.
  • Publication number: 20130189630
    Abstract: The present invention relates to a method and a device with fuel for combustion that is used in the sectors of industry, canteen and power plant, in particular, it relates to an energy-saving, efficient and environment-friendly fuel-combustion method and device. The combustion method is: 1) it contains an input port let the fuel enter into the furnace where the fuel is ignited to bring forth the incomplete combustion: 2) it contains another input port for adding the supplementary fuel to the furnace, which is mixed with the early-coming fuel that is burning to bring forth the complete combustion, 3) so the burning fuel experiences the phenomenon of cracking, gasification and expansion, but it is restrained in the boiler for compression, resulting in the fusion reaction for the purpose of perfect combustion; 4) Synchronized with the above steps, the air taken from the furnace side wall is mixed with the burning fuel in the furnace, which makes the heat generated in the furnace erupt due to the combustion.
    Type: Application
    Filed: September 3, 2010
    Publication date: July 25, 2013
    Inventor: Ng King Ching
  • Publication number: 20130145973
    Abstract: The present invention provide a fuel distribution device (9) for a burner, comprising an inlet end (9a), an outlet end (9b) and a distribution channel (9c) extending therebetween as well as n fuel feeding tubes (5) extending from the inlet end (9a) into the distribution channel (9c), characterized in that, the outlet end (9b) is provided with n groups of distribution opening, each of the groups includes m distribution openings distributed evenly along a circumference direction of the outlet end (9b), and in that the m feeding branch pipes (8) extending from each of the fuel feeding tubes (5) are communicated with the m distribution openings of each group respectively, wherein m, n are positive integers greater than or equal to 2. This design of the fuel distribution device improves the redundancy of the burner so as to ensure the even distribution of the fuel such as powdered coals at the outlet end of the fuel distribution device upon failure of one or several fuel feeding tubes.
    Type: Application
    Filed: December 24, 2009
    Publication date: June 13, 2013
    Applicant: Changzheng Engineering Co., Ltd.
    Inventors: Mingkun Wang, Congbin Jiang, Wei Xin, Jinjun Guo, Dong Ma
  • Publication number: 20130095437
    Abstract: An oxy-fuel furnace and method of heating material in an oxy-fuel furnace are disclosed. The method includes combusting oxygen and fuel with an oxy-fuel burner arrangement in the oxy-fuel furnace forming combustion gases, and maintaining a vortex including the combustion gases within a central region of an enclosure of the oxy-fuel furnace. The oxy-fuel burner arrangement includes a plurality of high momentum oxy-fuel burners arranged at an angle to generate the vortex, the angle being greater than 15 degrees but less than 75 degrees with respect to a furnace wall boundary of the enclosure, an angular velocity of greater than 0.07 radians per second, or a combination thereof. The furnace includes an oxy-fuel burner arrangement including at least two high momentum oxy-fuel burners having high shape factor nozzle geometries, and an enclosure. The vortex increases convective heating within the enclosure and uniformity of heating within the enclosure.
    Type: Application
    Filed: April 4, 2012
    Publication date: April 18, 2013
    Applicant: AIR PRODUCTS AND CHEMICALS, INC.
    Inventors: Gregory J. Buragino, Shailesh Pradeep Gangoli, Xiaoyi He, Aleksandar Georgi Slavejkov
  • Patent number: 8408197
    Abstract: A burner apparatus includes a first tube having a first longitudinal bore and a second tube having a second longitudinal bore. The second tube is disposed within the first longitudinal bore such that an annular space is defined between the second tube and the first tube. The burner apparatus further includes a nozzle formed at a tip of the second tube. A plurality of side holes are formed in the nozzle. The side holes are slanted relative to a longitudinal axis of the nozzle and are in communication with the second longitudinal bore.
    Type: Grant
    Filed: October 13, 2008
    Date of Patent: April 2, 2013
    Assignee: Corning Incorporated
    Inventor: Curtis Richard Cowles
  • Publication number: 20130040251
    Abstract: The system comprises a boiler (1), main burner groups (2F, 2E, 2D, 2C) located on different levels or zones through which pulverized solid fuel is injected into the boiler (1) and main mills (3F, 3E, 3D, 3C) for solid fuel, where each of them is connected to one of the main burner groups (2F, 2E, 2D, 2C) to which a flow of solid fuel is directed. As a complement, it incorporates a substitution mill (3B) intended to operate only on the main burner group (2F, 2E, 2D, 2C) whose main associated mill (3F, 3E, 3D, 3C) has stopped, as well as a support mill (3A) which operates constantly and directs an additional flow of solid fuel towards the main burner group or groups (2F, 2E, 2D, 2C) selected, supplementing the flow of solid fuel provided by the main mills (3F, 3E, 3D, 3C).
    Type: Application
    Filed: January 22, 2010
    Publication date: February 14, 2013
    Applicant: INERCO, INGENIERIA, TECNOLOGIA Y CONSULTORIA, S.A.
    Inventors: Francisco Rodriguez Barea, Enrique Tova Holgado, Luis Cañadas Serrano, Miguel Á Delgado Lozano, Miguel A. Portilla De La Concha Cobano, Miguel Morales Rodríguez
  • Publication number: 20120231400
    Abstract: The invention provides a nozzle-mixed burner for use in an endothermic process such as hydrogen reforming or ammonia reforming or ethylene cracking or EDC cracking. The burner comprises a fuel duct extending axially through a wall of the furnace. The fuel duct delivers gaseous fuel to an array of nozzles extending laterally to spray the fuel outwardly into an annular chamber defined by a cap. Combustion air is delivered to the chamber by way of a primary air duct. A convergent-divergent section of the duct and an outwardly divergent section of the chamber together form a radially extending venturi. Combustion of the fuel, supplemented by the venturi effect, draws the air through the duct by natural inspiration.
    Type: Application
    Filed: September 8, 2011
    Publication date: September 13, 2012
    Inventors: Christopher John MOXHAM, Bradley Charles Moxham, Mark Young
  • Publication number: 20120171629
    Abstract: A burner has a fuel/oxidant nozzles and a pair of dynamical lances spaced on either side thereof that inject a jet of fuel and primary oxidant along a fuel injection axis, and jets of secondary oxidant, respectively. Jets of actuating fluid impinge against the jets of secondary oxidant to fluidically angle the jets of secondary oxidant away from the fuel injection axis. The action of the angling away together with staging of the oxidant between primary and secondary oxidant injections allows achievement of distributed combustion conditions.
    Type: Application
    Filed: December 30, 2010
    Publication date: July 5, 2012
    Applicants: American Air Liquide, Inc., Air Liquide Advanced Technologies U.S. LLC, L'Air Liquide Societe Anonyme Pour L'Etude Et L 'Exploitation Des Procedes Georges Claude
    Inventors: Taekyu KANG, Vivek GAUTAM, Rajeev S. PRABHAKAR, Benoit GRAND, Bertrand LEROUX, Magnus MORTBERG, Nicolas Docquier
  • Patent number: 8192688
    Abstract: A thermally diluted exothermic reactor system is comprised of numerous orifices distributed within a combustor by distributed perforated contactor tubes or ducts. The perforated contactors deliver and mix diluent fluid and one or more reactant fluids with an oxidant fluid. Numerous micro-jets about the perforated tubes deliver, mix and control the composition of reactant fluid, oxidant fluid and diluent fluid. The reactor controls one or more of composition profiles, composition ratio profiles and temperature profiles in one or more of the axial direction and one or two transverse directions, reduces temperature gradients and improves power, efficiency and emissions.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: June 5, 2012
    Assignee: Vast Power Portfolio LLC
    Inventors: David L. Hagen, Gary Ginter, Bill Goheen, L. Allan McGuire, Janet Rankin
  • Patent number: 8177546
    Abstract: An apparatus and method for the creation, placement and control of an area of electrical ionization within an internal combustion engine combustion chamber or a fuel burner for a furnace is disclosed. A furnace includes a fuel source, a fuel burner, a plasma nozzle and igniter assembly, and the associated housing and flue structures. The plasma nozzle and igniter assembly is arranged so that the fuel sprayed out from the nozzle into the combustion area passes through or in close proximity to the area of plasma ionization. A fuel burner equipped with this electrical ionization device has its fuel efficiency enhanced by the complete and immediate combustion of substantially all of the fuel that passes through the area of plasma ionization. Exhaust gas recirculation using this system is also disclosed.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: May 15, 2012
    Inventor: Michael E. Jayne
  • Publication number: 20120115094
    Abstract: For a steam generator comprising a combustion chamber fired with a fossil fuel and/or with particulate fuel containing carbon and at least one burner level comprising several burners (1) and/or at least one level comprising nozzles in the form of upper air nozzles and/or side wall nozzles, each having connected feed means (9, 10, 11, 12) and/or feed lines (2, 4, 5, 9a-9d, 10a-10d, 11a-11d, 12a-12d) through which/by means of which gas flows conveying combustion and/or oxidation oxygen can be fed to burners (1) and/or the nozzles (13) and/or the combustion chamber, a solution should be created by means of which undesired oxygen contents in the flue gas can be avoided during oxyfuel operation of the steam generator in the partial-load range.
    Type: Application
    Filed: March 25, 2010
    Publication date: May 10, 2012
    Applicant: HITACHI POWER EUROPE GMBH
    Inventors: Christian Bergins, Jürgen Niesbach, Alfred Gwosdz
  • Patent number: 8152514
    Abstract: An oil/slurry burner with injection atomization for the gasification of solids-containing liquid fuels under high pressures of e.g. 80 bar (8 MPa) and high temperatures of e.g. 1200 to 1900 degrees centigrade in reactors with liquid slag removal is proposed, wherein a plurality of feeding elements disposed outside the annular duct concentrically with respect to the burner axis are provided for introducing liquid fuel and atomizing agent, the individual feeding elements being implemented intrinsically straight in the burner, inclined to the burner axis in the direction of the burner mouth, and ending at the burner mouth adjacent to the oxidant outlet. By introducing the liquid fuel and atomizing agent in individual completely implemented tubes with a corresponding nozzle, different fuels can be supplied simultaneously via the individual feeds and converted in a flame reaction.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: April 10, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: Dietmar Degenkolb, Norbert Fischer, Christian Reuther, Manfred Schingnitz
  • Patent number: 8118588
    Abstract: A burner assembly that produces very low NOx emissions includes a plurality of furnace gas openings for receiving a portion of furnace gasses back into a combustion cylinder. The burner assembly includes the combustion cylinder, a plurality of combustion air inlet conduits that extend into the cylinder and a plurality of fuel gas discharge nozzles that also extend into the cylinder. The burner assembly is mounted within a combustion chamber of a furnace, wherein the walls of the combustion chamber are provided with or are made up of heat transfer pipes.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: February 21, 2012
    Assignee: Coen Company, Inc.
    Inventor: Vladimir Lifshits
  • Patent number: 8075305
    Abstract: A burner for use in furnaces such as in steam cracking.
    Type: Grant
    Filed: January 24, 2006
    Date of Patent: December 13, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: George Stephens, David Spicer
  • Publication number: 20110256250
    Abstract: A process for producing metallic ultra-fine powder, which can use a raw material which is spread over a wide range, and control freely the grain size of the metallic powder to be produced, at low cost and high safety. The process for producing the metallic ultra fine powder consists of using a burner and a furnace which can generate a high temperature reductive atmosphere, and an apparatus for separating gas which is generated in the furnace from powder to recover the powder. The burner has a function of blowing a powdery metallic compound as a raw material into a high temperature reductive flame. The raw material powder is efficiently heated in airflow of a high temperature reductive flame, thereby being reduced rapidly into metallic ultra-fine powder. At this time, the grain size of the metallic ultra-fine powder is controlled by adjusting the oxygen ratio (i.e.
    Type: Application
    Filed: June 27, 2011
    Publication date: October 20, 2011
    Applicant: TAIYO NIPPON SANSO CORPORATION
    Inventors: Hiroshi Igarashi, Takayuki Matsumura, Shinichi Miyake
  • Patent number: 8025501
    Abstract: A gas burner for use in a furnace and a method of burning gas in a furnace, especially but not exclusively a process furnace used in an oil cracking or refining process. The gas burner comprises two passageways with adjacent outlets. The first passage way is in fluid communication with a source of pressurized fuel gas and has an aperture through which recirculated flue gas can enter the first passageway and the second passageway is in fluid communication with a source of air. In operation, fuel gas is injected into the first passageway and recirculated flue gas is thereby drawn into the first passageway so that it mixes with the fuel gas. Fuel gas is partially combusted and a mixture of partially combusted fuel gas and recirculated flue gas flows up the first passageway and comes into contact with air from the second passageway and combusts.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: September 27, 2011
    Assignee: Hamworthy Combustion Engineering Limited
    Inventors: Roger Lanary, Brian Foster
  • 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
  • Patent number: 7972133
    Abstract: A burner (23) for operating a heat generator includes a swirler (2) for a combustion air flow (9), and also devices (7, 12) for injecting at least one fuel into the combustion air flow (9), wherein a mixing path (3) is arranged downstream of the swirler (2), and wherein at least one nozzle (20) for feeding liquid pilot fuel is arranged in the region radially outside the discharge opening of the mixing path (3) of the burner. With such a burner, an operating mode which is as pollutant-free and overheating-free as possible can be enabled even at low load and under transient conditions if the at least one nozzle (20) is arranged in a burner front plate (32), wherein at least one discharge opening (15), through which the pilot fuel discharges into the combustion chamber (16), is provided in a front face (34) of the burner front plate (32), which is arranged essentially parallel to a combustion chamber rear wall (28).
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: July 5, 2011
    Assignee: ALSTOM Technology Ltd.
    Inventors: Stefano Bernero, Peter Flohr, Gijsbertus Oomens, Martin Zajadatz
  • Publication number: 20110076629
    Abstract: An air-fuel burner includes a heat-transfer tube, an air-fuel mixing chamber, and an air-fuel nozzle. The air-fuel nozzle is coupled to the air-fuel chamber to communicate a combustible air-fuel mixture into a combustion chamber defined between the air-fuel nozzle and the heat-transfer tube. The combustible air-fuel mixture, when ignited, establishes a flame in the combustion chamber to produce heat which is transferred through heat-transfer tube to an adjacent medium external to the heat-transfer tube.
    Type: Application
    Filed: September 29, 2009
    Publication date: March 31, 2011
    Inventor: Pawel Mosiewicz
  • Patent number: 7910494
    Abstract: A gas delivery system for supplying a process gas from a gas supply to a thermal processing furnace, a thermal processing furnace equipped with the gas delivery system, and methods for delivering process gas to a thermal processing furnace. The gas delivery system comprises a plurality of regulators, such as mass flow controllers, in a process gas manifold coupling a gas supply with a thermal processing furnace. The regulators establish a corresponding plurality of flows of a process gas at a plurality of flow rates communicated by the process gas manifold to the thermal processing furnace. The gas delivery system may be a component of the thermal processing furnace that further includes a liner that surrounds a processing space inside the thermal processing furnace.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: March 22, 2011
    Assignee: Tokyo Electron Limited
    Inventors: Anthony Dip, Eric J. Malstrom
  • Patent number: 7909601
    Abstract: A burner for use in furnaces such as those employed in steam cracking. The burner includes a primary air chamber for supplying a first portion of air, a burner tube having an upstream end and a downstream end, a burner tip having an outer diameter, the burner tip mounted on the downstream end of the burner tube adjacent a first opening in the furnace, so that combustion of the fuel takes place downstream of the burner tip producing a gaseous fuel flame, at least one air port in fluid communication with a secondary air chamber for supplying a second portion of air, the at least one air port radially positioned beyond the outer diameter of the burner tip and at least one non-gaseous fuel gun for supplying atomized non-gaseous fuel, the at least one non-gaseous fuel gun having at least one fuel discharge orifice, the at least one non-gaseous fuel gun positioned within the at least one air port.
    Type: Grant
    Filed: January 24, 2006
    Date of Patent: March 22, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: George Stephens, David Spicer, Kurt Edward Kraus
  • Patent number: 7901204
    Abstract: A dual-fuel burner for use in furnaces such as in steam cracking. The burner includes a primary air chamber, a burner tube having an upstream end and a downstream end, a fuel orifice located adjacent the upstream end of the burner tube for introducing gaseous fuel into the burner tube, a burner tip having an outer diameter mounted on the downstream end of the burner tube adjacent a first opening in the furnace, so that combustion of the gaseous fuel takes place downstream of the burner tip, and at least one non-gaseous fuel gun, the at least one non-gaseous fuel gun having at least one fuel discharge orifice for combusting the non-gaseous fuel downstream of the discharge orifice, wherein the at least one non-gaseous fuel gun is radially positioned beyond the outer diameter of the burner tip so that a flame emanating from the combustion of the non-gaseous fuel is substantially aligned in parallel with a flame emanating from the combustion of the gaseous fuel.
    Type: Grant
    Filed: January 24, 2006
    Date of Patent: March 8, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: George Stephens, David Spicer
  • Patent number: 7837462
    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: May 21, 2008
    Date of Patent: November 23, 2010
    Assignee: Fives North American Combustion, Inc.
    Inventors: Thomas B Neville, John J Nowakowski, Mark C Hannum, Thomas F Robertson
  • Publication number: 20100291495
    Abstract: A burner is provided and includes a cylindrical burner head housed in a combustion chamber of a heating apparatus, on which an air and gas mixture is burnt, the head including a cylindrical shell with through apertures, fixed at a first axial end by a connecting flange to a shutter element intended to seal the combustion chamber, while its opposite axial end has a solid end wall which seals the head, an element for distributing the air and gas mixture, positioned inside the burner head and intended to distribute the flow of combustible mixture reaching the burner on to the burner head. The distributor element includes a plate-like portion extending as a continuation of the connecting flange and extending substantially in an orthogonal direction to the axial direction of extension of the cylindrical head, the plate-like portion having through apertures for distributing the mixture to the burner head.
    Type: Application
    Filed: November 4, 2008
    Publication date: November 18, 2010
    Applicant: SIT LA PRECISA S.P.A. CON SOCIO UNICO
    Inventors: Gianfranco Scribano, Maurizio Beghi
  • Publication number: 20100275602
    Abstract: A burner for a gas turbine engine is provided. The burner includes a radial swirler for creating a swirling fuel/air mix, a combustion chamber where combustion of the swirling fuel/air mix occurs, and a pre-chamber located between the radial swirler and the combustion chamber. The radial swirler includes a plurality of vanes arranged in a circle, generally radially inwardly extending flow slots are defined between adjacent vanes in the circle, each flow slot includes a radially outer inlet end, a radially inner outlet end, first and second generally radially inwardly extending sides provided by adjacent vanes, and a base and top. A flow slot includes a first gas fuel injection hole in its base and a flow slot includes a second gas fuel injection hole in its first side wherein the amounts of gas fuel injected via the first and second gas fuel injection holes are independently variable.
    Type: Application
    Filed: April 27, 2010
    Publication date: November 4, 2010
    Inventors: Andrew Cant, Paul Headland, Daniel Leggett
  • Publication number: 20100248175
    Abstract: A NOx suppression apparatus is configured for use with a burner that injects fuel into a stream of process air flowing into and through a rotary kiln. The apparatus comprises a premix injection system that forms a premix of fuel gas and air, and injects the premix into the stream of process air upstream of the burner port. This enables premix products of combustion to suppress the production of NOx by vitiating a combustion air portion of the process air before the combustion air portion combusts with fuel injected from the burner port.
    Type: Application
    Filed: September 2, 2009
    Publication date: September 30, 2010
    Inventors: Bruce E. Cain, Thomas F. Robertson, John J. Nowakowski
  • Patent number: 7789658
    Abstract: A fired heater has two types of burners. The first burner is located in a duct which provides oxygen-containing gas to the heater to be combusted with the fuel provided by the burner. The second burner is located in the heater and provides both air and fuel for combustion. The heater may be located downstream of a gas turbine engine that cogenerates electricity and provides the oxygen-containing gas.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: September 7, 2010
    Assignee: UOP LLC
    Inventors: Gavin P. Towler, Randy S. Stier, Christopher Naunheimer
  • Patent number: 7788897
    Abstract: Clean combustion and equilibration equipment and methods are provided to progressively deliver, combust and equilibrate mixtures of fuel, oxidant and aqueous diluent in a plurality of combustion regions and in one or more equilibration regions to further progress oxidation of products of incomplete combustion, in a manner that sustains combustion while controlling temperatures and residence times sufficiently to reduce CO and NOx emissions to below 25 ppmvd, and preferably to below 3 ppmvd at 15% O2.
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: September 7, 2010
    Assignee: Vast Power Portfolio, LLC
    Inventors: Paul Andrew Campbell, David Hagen
  • Publication number: 20100180598
    Abstract: A method for operating a burner including a burner outlet opening with at least two sectors, each sector is assigned at least one fuel nozzle, is provided. The method is characterized in that fuel is supplied separately to the fuel nozzles of different sectors. Also described is a burner which includes at least two sectors wherein each sector is assigned at least one fuel nozzle. The burner includes at least two separate fuel supply lines and a device for adjusting the fuel mass flow which flows through the respective fuel supply line. The fuel supply lines supply fuel to the fuel nozzles of different sectors. Also described is a gas turbine which is fitted with at least one burner.
    Type: Application
    Filed: January 18, 2008
    Publication date: July 22, 2010
    Inventors: Eberhard Deuker, Anil Gulati, Andreas Heilos
  • Publication number: 20100021853
    Abstract: A burner assembly for and method of combusting fuel gas in a furnace is provided. The burner assembly includes a burner tile having a burner throat disposed therethrough. Combustion air is conducted through the burner throat into a combustion zone in the furnace. A pilot assembly is used to generate a pilot flame within the burner throat. Fuel gas is injected into an ignition zone located outside the burner throat and ignited therein. The pilot flame generated in the burner throat can be used to ignite the fuel gas in the ignition zone. The ignited fuel gas is admixed with combustion air in the combustion zone. The burner assembly can be operated without admixing a significant amount of fuel gas with combustion air in the burner throat, which can help control the formation of undesirable nitrogen oxides (NOX).
    Type: Application
    Filed: July 25, 2008
    Publication date: January 28, 2010
    Applicant: John Zink Company, LLC
    Inventor: Wesley R. Bussman
  • Publication number: 20090274986
    Abstract: A method of injection and combustion control and related injection nozzles and lances are described which facilitate the merging of the combustion of fossil fuels and separately added solid biomass waste product fuels in the form of pelletized chars and fine particulates. The teachings of this inventor's earlier patent, “Variable Gas Atomization,” U.S. Pat. No. 4,314,670, (referred to herein as VGA) are employed. They are applied in a distinctly different manner so as to enable air conveyed and injected solids to be accelerated, propelled and distributed in the combustion zone of fossil or biomass fuel boilers. While the use of an annular nozzle configuration with conically flared exit tips is generally similar, the functions to be performed, and the related conical exit configuration, differ.
    Type: Application
    Filed: April 22, 2009
    Publication date: November 5, 2009
    Inventor: William Arthur Walsh, JR.
  • Publication number: 20090239182
    Abstract: The invention concerns a combustion method for industrial furnace comprising an arrangement of two substantially parallel and symmetrical burner assemblies (G, D). Each burner assembly comprises a fuel injector (10<SUB>G</SUB>, 10<SUB>D</SUB>) and three oxidant injectors (1<SUB>G</SUB>, 2<SUB>G</SUB>, 3<SUB>G</SUB>, 1<SUB>D</SUB>, 2<SUB>D</SUB>, 3<SUB>D</SUB>) arranged at increasing distances from the fuel injector. An oxidant supply system cyclically distributes a specific flow of oxidant among some at least of the second and third injectors of the burner assemblies (2<SUB>G</SUB>, 3<SUB>G</SUB>, 2<SUB>D</SUB>, 3<SUB>D</SUB>). The amount of nitrogen monoxide produced upon combustion is thus reduced, while ensuring a good distribution of the heating power in the furnace.
    Type: Application
    Filed: December 5, 2005
    Publication date: September 24, 2009
    Inventors: Rémi Tsiava, Benoit Grand, Patrick Recourt, Bertrand Leroux