Recirculation About Mixing Or Combustion Chamber Wall Or Baffle Patents (Class 431/116)
  • Patent number: 10991087
    Abstract: Operation of a combustion control system of furnace is controlled by image analysis, outside of the furnace or within the furnace, of a flame produced by combustion within the furnace, to correlate the image with carbon monoxide content of the flame, and adjustment of the oxygen and/or fuel flow into the furnace in response to the correlation.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: April 27, 2021
    Assignee: Praxair Technology, Inc.
    Inventors: Valmiro Correia e Sa Neto, Euan J. Evenson, Kevin W. Albrecht, James E. Kelly, Joaquín de Diego Rincón, Jorge Visús Pool
  • Patent number: 10920979
    Abstract: A flow momentum enhancing device having an airfoil shape is used in a new or refurbished burner to increase the momentum of the burner combustion air stream and create a reduced pressure region which pulls inert products of combustion into the combustion process. The inert products of combustion mix with the burner air and/or fuel streams to lower the peak flame temperature of the burner and provide reduced NOx production.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: February 16, 2021
    Assignee: ZEECO, INC.
    Inventors: Darton J. Zink, Rex K. Isaacs, John Petersen, Cody Little, Tim Kirk
  • Patent number: 10690411
    Abstract: A circulation channel circularly supplying air heated by a burner is connected to a drying chamber into which a painted workpiece is supplied. The circulation channel includes a flame holding cylinder surrounding a flame of the burner and a casing surrounding the flame holding cylinder from outside and protrudes further than the flame holding cylinder toward a front end side, opposite to a side of the burner, of the flame holding cylinder. The casing includes a low temperature air inlet port that introduces low temperature air from outside into the casing, an exhaust port that exhausts high temperature air heated by the burner and the low temperature air to the circulation channel, and a mixing mechanism that is formed in the casing and mixes the high temperature air and the low temperature air before the high temperature air and the low temperature air are exhausted from the exhaust port.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: June 23, 2020
    Inventor: Satoshi Tamura
  • Patent number: 10533741
    Abstract: The pre-mix burner assembly includes a jet pump comprising a suction chamber, a flue gas inlet, and a combustion air tube with a combustion air nozzle. The combustion air inlet includes a combustion air tube with a tapered nozzle, and it is connected to a combustion air fan. The flue gas inlet is connected to the suction chamber and the combustion air fan. The suction chamber surrounds the combustion air tube, and it has a jet pump nozzle with a discharge. The assembly includes a fuel gas inlet connected to the combustion air tube. The combustion air and fuel gas mixture exits the combustion air nozzle creating a negative pressure in the suction chamber and drawing flue gas into the suction chamber. The assembly includes a mixing tube positioned downstream of the jet pump discharge, and a burner block connected to an outlet of the mixing tube.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: January 14, 2020
    Assignee: Honeywell International Inc.
    Inventors: Curtis L. Taylor, Bradley D. Patterson, William R. Berkenbush
  • Patent number: 10451271
    Abstract: The pre-mix burner assembly includes a jet pump comprising a combustion air tube, a flue gas inlet, and a suction chamber. The combustion air tube has an inlet and a tapered nozzle, and it is connected to a combustion gas fan. The flue gas inlet is connected to the suction chamber and the furnace chamber or other flue gas source. The suction chamber surrounds the combustion air tube, and it has a jet pump nozzle with a discharge. The combustion air exiting the combustion air nozzle creates a negative pressure in the suction chamber and draws flue gas into the suction chamber. There is a burner housing positioned downstream of the jet pump discharge. There is a fuel gas inlet connected to a mixing tube in the burner housing, and a burner block connected to the outlet of the burner housing.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: October 22, 2019
    Inventors: Curtis L. Taylor, Bradley D. Patterson, Marek Scholler, Jayson Perdue
  • Patent number: 10364983
    Abstract: A system and method for controlling the direction of a burner flame exposed to potentially impinging wind or other air flows. At least one fluid nozzle is mounted in proximity to a burner nozzle. The fluid nozzle is configured to produce a spray of fluid provided by a fluid supply system. As the spray is produced, an area of low pressure is created near the fluid nozzle, creating a buffer air flow around the spray. The buffer air flow is directed towards the potentially impinging air flow such that at least a portion of the potentially impinging air flow is counteracted and no longer impinges upon the burner flame. One or more fluid nozzles may be used in the burner flame control system to counteract one or more air flows.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: July 30, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Christopher Michael McMillon
  • Patent number: 10352555
    Abstract: A burner, particularly Low-NOx-burner, the method for generating a flame by combustion of a fuel, having a tile surrounding an opening of the tile extending along a burner axis, the tile further having a front side and a rear side facing away from the front side, wherein the rear side comprises an air inlet connected to the opening for feeding air into the opening, and wherein the front side having a discharge outlet connected to the opening for discharging a flame generated by the burner into a surrounding area, and wherein the tile further having an inside facing the opening as well as an outside facing away from the opening. The burner further has at least one oxygen lance extending along the burner axis in a first recess of the tile.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: July 16, 2019
    Assignee: Linde Aktiengesellschaft
    Inventors: Bernhard Schreiner, Lennart Rangmark, Tomas Ekman, Ambrogio Gusberti
  • Patent number: 10316715
    Abstract: The burner includes a first tube portion having a tube end including an ejection port and a second tube portion extending toward the ejection port in the first tube portion. The combustion gas generated by combusting air-fuel mixture is ejected from the ejection port. The second tube portion includes a heat exchanging portion that vaporizes liquid fuel with combustion heat of the combustion chamber and supplies the vaporized fuel to the premixing chamber. The outer surface of the second tube portion functions as a heat receiving surface of the heat exchanging portion. A fuel supply section of the burner is configured to vaporize liquid fuel and supply the vaporized fuel to the premixing chamber, and supply liquid fuel to the heat exchanging portion.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: June 11, 2019
    Assignee: HINO MOTORS, LTD.
    Inventors: Ichiro Tsumagari, Ryo Shibuya, Shun Nakagawa
  • Patent number: 10281140
    Abstract: A steam generator system employing a fired burner with a flue gas recirculation system with low NOx emission is disclosed. A method to retrofit fired burners for low NOx emission is also disclosed. In the system, the flue gas recirculation system is configured to include a pre-mixer, and the recirculated flue gas (RFG) is routed to the stage of the pre-mixer for mixing with a portion of the fuel stream, forming a secondary RFG fuel mixture. The secondary RFG fuel mixture is routed to the secondary stage of the burner via a plurality of injector ports. The injection of the second RFG fuel mixture results in a reduction of temperature for the NOx emission to be less than 5 ppm at 3% O2, dry basis.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: May 7, 2019
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Thomas F. Robertson, John J. Nowakowski, Mark C. Hannum, Stein J. Storslett
  • Patent number: 10240780
    Abstract: A high turn-down burner adapted to receive a fuel flow for combustion including an outer housing including a central axis, a side wall having a top edge and a bottom edge, a plurality of apertures disposed on the side wall, a top wall adjoining the side wall at the top edge and a bottom wall adjoining the side wall at the bottom edge; an inner housing including a central axis, a side wall, a plurality of apertures disposed on the side wall, the inner housing is coaxially rotatable with respect to the outer housing; and an actuator adapted to harness and convert the power exerted by the fuel flow to a movement of the inner housing with respect to the outer housing, wherein the alignment of the apertures of the inner and outer housings is adapted to modify an effective combustion area of the burner.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: March 26, 2019
    Assignee: Intellihot, Inc.
    Inventors: Sridhar Deivasigamani, Sivaprasad Akasam
  • Patent number: 10088155
    Abstract: The invention relates to a central burner for multi-fuel multiple lance burner systems having a central lance with an inner pipe and an outer pipe. The inner pipe and the outer pipe form an annular clearance duct. A plurality of outer lances are arranged around the central lance. A funnel-like mixing device is provided in the extension of the annular clearance duct in the region of the end of the inner pipe. This funnel-like mixing device has openings in its wall for combustion media to flow through. The outer lances each have a nozzle which has openings along the lateral circumferential area, said openings being arranged asymmetrically.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: October 2, 2018
    Assignee: Loesche GmbH
    Inventors: Andre Baetz, Guenther Balgar, Ramazan Keles, Holger Wulfert
  • Patent number: 9920927
    Abstract: A low NOx burner has a housing that includes a burner head defining a gas manifold and a primary flame zone downstream of the burner head. The burner has a gas inlet for receiving gas. Flow-through air vents are disposed around a center of the burner head and extending through the burner head thereby enabling cold core air to flow from an annular core space upstream of the burner head to the primary flame zone downstream of the burner head. The burner also includes a plurality of premix air vents in fluid communication with the manifold for premixing air and gas within the manifold and for emitting premixed air and gas into the primary flame zone. A plurality of staging pipes extend from the manifold into the primary flame zone for conveying gas into the primary flame zone. The burner includes an ignition device extending into the primary flame zone.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: March 20, 2018
    Assignee: Haul-All Equipment Ltd.
    Inventors: Sergiu Desi-Seulean, Jerry Ejdrygiewicz, David Neufeldt
  • Patent number: 9909493
    Abstract: An assembly includes a gas turbine and a heat exchanger for heating up a gas turbine process fluid by thermal energy. The gas turbine has a compressor, a combustor and a turbine downstream of the combustor, wherein the thermal energy is from the solar receiver. To improve efficiency and reduce power generation fluctuations, the assembly includes a first line to conduct the gas turbine process fluid downstream a compression by the compressor to the heat exchanger, and a second line to conduct the gas turbine process fluid from the heat exchanger to the combustor to generate hot combustion gas from the warmed up gas turbine process fluid burning fuel in the combustor.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: March 6, 2018
    Inventors: Mats Andersson, Jacek Janczewski, Olle Lindman, Magnus Persson
  • Patent number: 9851099
    Abstract: According to the present disclosure, a flat-flame nozzle is provided for producing a flat flame in a flame chamber included in a burner assembly. The flat-flame nozzle is configured to conduct fuel from a fuel supply to an ignition zone in the flame chamber. In some illustrative embodiments, the flat-flame nozzle is also configured to conduct oxygen from an oxygen supply to the ignition zone to produce a combustible oxygen-fuel mixture in the flame chamber. In illustrative embodiments, a removable first plate-separation border frame is positioned to lie between a first lower plate and a companion first upper plate. This border frame is configured to cooperate with those plates to form in the flat-flame nozzle a fuel-discharge outlet and a fuel-transport passageway communicating with the fuel-discharge outlet.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: December 26, 2017
    Assignee: Honeywell International Inc.
    Inventors: Curtis L. Taylor, Brad Patterson, Tracy Fine, Jayson Perdue
  • Patent number: 9803865
    Abstract: A system includes a turbine combustor that includes a head end portion having a head end chamber, a combustion portion having a combustion chamber disposed downstream from the head end chamber, a cap disposed between the head end chamber and the combustion chamber, and a flow distributor configured to distribute an exhaust flow circumferentially around the head end chamber. The flow distributor includes at least one exhaust gas flow path.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: October 31, 2017
    Assignees: General Electric Company, ExxonMobil Upstream Research Company
    Inventors: Carolyn Ashley Antoniono, William Lawrence Byrne, Elizabeth Angelyn Fadde
  • Patent number: 9677813
    Abstract: A method for providing fresh air fed through a fan to a burner of a dryer, thereby charging the burner, when the dryer is operated with recirculating air. In commercial dryers in which the drying air is heated by a burner, it is customary to reuse the moist air leaving a drum containing the laundry to be dried as recirculating air. The recirculating air component is increased with increasing drying of the laundry. At the end of the drying operation, when the moist air no longer contains as much moisture as at the start, the moist air is used as recirculating air. The burner then no longer gets enough combustion air, which leads to an incomplete combustion. The dryer can be operated with a higher recirculating air component, an optimal combustion being guaranteed through the charging of the burner with fresh air. The invention permits more economical drying.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: June 13, 2017
    Assignee: Herbert Kannegiesser GmbH
    Inventors: Wilhelm Bringewatt, Engelbert Heinz
  • Patent number: 9638420
    Abstract: A cyclone ignition gun includes a housing, an igniter, an electric fan, a battery pack, a gas can and a duct pipe respectively mounted inside the housing, a slide switch mounted in the top side of the housing for controlling the operation of the igniter and the electric fan, and a push switch mounted in the bottom side of the housing for controlling the gas can to discharge gas for burning. The slide switch and the push switch can be simultaneously operated to selectively achieve the function of fire burning and air blowing, the function of fire burning, or the function of air blowing.
    Type: Grant
    Filed: November 2, 2014
    Date of Patent: May 2, 2017
    Inventor: Yi-Jue Li
  • Patent number: 9618204
    Abstract: The dry oxygen content in the exhaust of an industrial furnace may be controlled to 1% or less by determining one or more of: the temperature of: each or a group of one or more burner (flame); one or more section of the radiant walls adjacent (e.g., within 5 feet of the burner); the temperature gradient across the process coils; the combustion products of one or more burners; the mass flow rate or the volume flow rate of air to each burner (e.g., the pressure drop across the variable forced air aperture ii) comparing the result to said target value; and iii) adjusting either a) the opening of the variable forced air aperture; or b) adjusting the mass flow rate or the volume flow rate of air from said one or more fans.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: April 11, 2017
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: Leslie Wilfred Benum, Eric Clavelle, Grazyna Petela, Randall E Saunders, Mark Williamson
  • Patent number: 9494078
    Abstract: The present invention is a prime mover with recovered energy driven compression for stationary and motor vehicle application. Efficient low compression operation, especially beneficial to small gas turbines, is enabled with either ambient or cryogenic intake air. Recovered energy, liquefied air cooling and re-liquefaction of air by a cryogenic sink minimize motive fluid compression work of a jet compressor driving exhaust gas recirculation. Regenerative heat exchanger terminal temperature difference relative to turbine temperature drop and heat exchanger surface area are reduced.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: November 15, 2016
    Inventor: Jay Stephen Kaufman
  • Patent number: 9347375
    Abstract: In one embodiment, a system includes a turbine combustor of a turbine system with the turbine combustor at least partially enclosed within a compressor discharge casing. The turbine system also includes an exhaust gas recovery system that includes an exhaust gas recirculation duct. The exhaust gas recirculation duct is configured to recirculate exhaust gas from a downstream end of the turbine combustor to an upstream end of the turbine combustor. This exhaust gas recirculation duct is entirely enclosed within the compressor discharge casing.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: May 24, 2016
    Assignee: General Electronic Company
    Inventor: Michael John Hughes
  • Patent number: 9074762
    Abstract: A burner of a gas turbine including a reaction chamber and a plurality of jet nozzles opening into the reaction chamber is provided. Fluid is injected through an outlet into the reaction chamber by the jet nozzles using of a fluid stream wherein the fluid is burned into hot gas in the reaction chamber. An annular gap is disposed about the fluid stream for at least one jet nozzle so that a part of the hot gas is drawn out of the reaction chamber and flows opposite the fluid flow direction into the annular gap and is mixed with the fluid stream within the jet nozzle. The ring gap is formed by means of an insert tube, and wherein the insert rube includes a thickening at the upstream end. A method for stabilizing the flame of such a burner of a gas turbine is also provided.
    Type: Grant
    Filed: August 2, 2010
    Date of Patent: July 7, 2015
    Inventors: Matthias Hase, Werner Krebs, Bernd Prade
  • Patent number: 8899970
    Abstract: Burner device (2) for an industrial furnace (1) comprising a channel (3) for fuel, a channel (4) for a first oxidant, an outlet (9) for flue gases, a control device (10) and a heat buffer (7), where the first oxidant and the flue gases alternatingly are led through the heat buffer (7). The invention is characterized in that a separate lancing device (6) is arranged to supply a second oxidant to the burner device (2).
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: December 2, 2014
    Assignee: AGA AB
    Inventors: Tomas Ekman, Anders Lugnet
  • Patent number: 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
  • Patent number: 8814561
    Abstract: Stable operation of oxyfuel combustion boiler is ensured and amplification in likelihood of or downsizing of forced draft fan is attained. Upon change of commanded boiler load from start value to target value by target time, a feed amount of oxygen from oxygen producing device is regulated for attainment of oxygen concentration on entry side of the boiler body from reference value to attainment point or target entry-side oxygen concentration within entry-side oxygen concentration regulation range by target time. After attainment to attainment point, control is made to return entry-side oxygen concentration to reference value at return point. Airflow rate of forced draft fan is controlled with change rate smaller than change rate with which air flow rate of forced draft fan reaches target value by target time.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: August 26, 2014
    Assignee: IHI Corporation
    Inventors: Tetsuya Hori, Toshihiko Yamada, Yohei Akutsu
  • Patent number: 8794960
    Abstract: A low NOx burner for installation on a furnace wall has an elongated tube connected to a combustion air supply, the furnace side end of which mounts a combustion air spinner that is spaced from the furnace wall. A plurality of air ports extend through the wall into the combustion chamber. Downstream ends of the air ports are spaced from the furnace wall as well as from the spinner, and they are configured to bias the discharged air flow towards the spinner. A plurality of first fuel gas spuds with fuel gas discharge orifices arranged about the spinner and discharges fuel gas into the combustion chamber downstream of the spinner. A second fuel gas spud is disposed in pockets between adjacent pairs of air ports which are closed against the furnace wall so that no combustion air flows through the pockets. The third gas spuds are placed inside the air ports.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: August 5, 2014
    Assignee: John Zink Company, LLC
    Inventors: Vladimir Lifshits, Stephen B. Londerville
  • 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
  • Patent number: 8678813
    Abstract: A stream of exhaust gases from the combustion of hydrocarbon-containing fuels with a variable temperature can be produced by dividing the exhaust gases into two separate part-streams, cooling one part-stream and then combining the two part-streams again. The temperature of the exhaust-gas stream which has been combined again can be set to between the temperature of the combustion of the hydrocarbon-containing fuels and the temperature of the cooled exhaust-gas part-stream by corresponding throttling of the two part-streams before they are brought together again. The exhaust-gas stream produced in this way is preferably used for the defined ageing of automotive exhaust catalysts. In this context, it is particularly advantageous that the change in the temperature of the exhaust-gas stream has no influence on its air/fuel ratio.
    Type: Grant
    Filed: December 17, 2005
    Date of Patent: March 25, 2014
    Assignee: Umicore AG & Co. KG
    Inventors: Juergen Gieshoff, Hartmut Finkbeiner, Thomas Kreuzer
  • Patent number: 8622736
    Abstract: In a highly efficient recuperator burner, which comprises at least one combustion chamber for warm-up operation and is otherwise set up for FLOX® operation, and a recuperator for preheating combustion air by means of thermal exhaust gas energy in a counter-current heat exchange mode via heat exchanger pipes, each heat exchanger pipe has, in a heat exchange section thereof, a flattened gap cross-section and, at its end facing a volume to be heated, a nozzle cross-section, which differs from the flattened gap cross-section of the heat exchanger pipe.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: January 7, 2014
    Assignee: WS-Wärmeprozesstechnik GmbH
    Inventors: Joachim G. Wünning, Joachim A. Wünning
  • Patent number: 8529247
    Abstract: A gas burner apparatus for discharging a mixture of fuel gas, air and flue gas into a furnace space of a furnace wherein the mixture is burned and flue gas having a low content of nitrous oxides and carbon monoxide is formed is provided. The burner tile includes at least one gas circulation port extending though the wall of the tile. The interior surface of the wall of the tile includes a Coanda surface. Fuel gas and/or flue gas conducted through the gas circulation port follows the path of the Coanda surface which allows more flue gas to be introduced into the stream. The exterior surface of the wall of the tile also includes a Coanda surface for facilitating the creation of a staged combustion zone. Also provided are improved burner tiles, improved gas tips and methods of burning a mixture of air, fuel gas and flue gas in a furnace space.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: September 10, 2013
    Assignee: John Zink Company, LLC
    Inventors: Roger L. Poe, James Wilkins, Michael G. Claxton
  • Patent number: 8454349
    Abstract: An improved burner and a method for combusting fuel used in furnaces such as those found in steam cracking. The burner includes a burner tube having a downstream end and an upstream end, a burner tip adjacent a first opening in the furnace, so that combustion of the fuel takes place at the burner tip, a lighting chamber adjacent to the first opening in the furnace, and a removable lighting chamber plug having a shape effective to substantially fill the lighting chamber when positioned within the lighting chamber.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: June 4, 2013
    Assignee: ExxonMobile Chemical Patents Inc.
    Inventors: George Stephens, David B. Spicer
  • Patent number: 8413648
    Abstract: A barbecue having a manual operating mode and an automatic operating mode. In the manual operating mode a user is required to act affirmatively on the burner or burners of the barbecue in order to light them. In the automatic operating mode, a controller operably controls an igniter and/or a pilot to automatically light the burner or burners without the need for a user to affirmatively act on the burners themselves.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: April 9, 2013
    Assignee: Coprecitec, S.L.
    Inventors: Félix Querejeta Andueza, JoséJoaquin Antxia Uribetxebarria, Aitor Zabalo Bayón, Iñigo Albizuri Landa, José Ignacio Múgica Odriozola
  • Patent number: 8375722
    Abstract: An apparatus and method for inducing waves within a container arranged to permit a through-flow of fluid flowing generally from an inlet of the container to an exit of the container, wherein the container has wave inducing means located at the exit of the container, the wave inducing means being operable to vary the area of the exit thereby inducing waves within the container. The apparatus may form part of a combustor test rig.
    Type: Grant
    Filed: July 3, 2007
    Date of Patent: February 19, 2013
    Assignee: Rolls-Royce plc
    Inventors: Nickolaos Pilatis, Arthur L Rowe
  • Patent number: 8246343
    Abstract: In one embodiment, a method for generating heat energy includes injecting a stream having a concentration of at least 50% oxygen (O2 stream) into a primary gas stream through a mixer, the mixer discharging the O2 stream as two or more spaced jets traversing the primary stream, thereby enriching the primary gas stream. The method further includes mixing fuel with the enriched primary gas stream, thereby forming a fuel stream; and combusting the fuel stream, thereby forming a flue gas stream.
    Type: Grant
    Filed: November 26, 2007
    Date of Patent: August 21, 2012
    Assignee: L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: M. Usman Ghani, Florian Gautier, Rajani K. Varagani, Susie Levesque, Bernard Labegorre, Frederic Camy-Peyret, Sylvain Grillon, Pavol Pranda
  • Patent number: 8161961
    Abstract: A gas-heated laundry dryer having a heating device. The heating device includes a gas burner, a valve with a gas nozzle configured to supply primary air for formation of a flame and a tubular heating channel configured to enclose the flame. The tubular heating channel includes an inlet opening configured to receive secondary air as combustion air and an outlet opening configured to receive tertiary air mixable with hot gases of the burner. The outlet opening is connected to a process air duct of the laundry dryer. An annular baffle member is disposed in the outlet opening of the heating channel and configured to center, by the secondary and tertiary air, at least one of the flame and a hot air stream in the channel.
    Type: Grant
    Filed: May 17, 2006
    Date of Patent: April 24, 2012
    Assignee: Miele & Cie. KG
    Inventors: Heinz Freese, Wolfhard Jording, Wiebke Riedel, Frank Schiwy
  • 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: 8113821
    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: Grant
    Filed: March 7, 2008
    Date of Patent: February 14, 2012
    Assignee: Hauck Manufacturing Company
    Inventors: James J. Feese, Bruce A. Wartluft, Jacob W. Mattern
  • Patent number: 8105076
    Abstract: A radiant tube heater with a burner assembly, a radiant tube assembly and a combustion air pre-heater; wherein the burner assembly comprises: a burner fuel nozzle; a plenum chamber and a pre-mixer chamber; the plenum chamber having a combustion air inlet; wherein in use: combustion air flows from said plenum chamber through an orifice to said pre-mixer where said air is mixed with burner fuel entering said pre-mixer through said nozzle prior to being combusted at a burner head; said pre-mixer being at least partly located within said radiant tube assembly; and where in use at least part of the combustion air supplied to said plenum is preheated in said air pre-heater using residual sensible heat of the hot combustion gas products of the heater.
    Type: Grant
    Filed: August 6, 2007
    Date of Patent: January 31, 2012
    Assignee: Thomas & Betts International, Inc.
    Inventors: Glyn Wilfred Turner, Lee Brian Herbert
  • Publication number: 20110250550
    Abstract: The invention relates to a device and a method for biomass combustion and simultaneous CO2 capture for capturing the CO2 generated in said combustion to generate a substantially pure CO2 stream (9) which can be subsequently stored. The device comprises a combustor-carbonator reactor (a) which is fed with biomass and air; at least one solids recycling cyclone (b, c) which separates solids (5) returning to the combustor-carbonator and from which there exits a solids and gases stream (4). The device comprises a calciner B which regenerates CaO, a fluidized bed (d) and means for feeding fresh CaCO3 (12) and for purging solids (11).
    Type: Application
    Filed: November 18, 2009
    Publication date: October 13, 2011
    Applicant: GAS NATURAL SDG, S.A.
    Inventors: Juan Carlos Abanades Garcia, Mónica Alonso Carreño, Nuria Rodriguez Gómez
  • 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: 8021144
    Abstract: A catalytic combustor (1) is provided for combustion of gaseous and liquid fuels, which combustor comprises a housing (2) having an inlet (3) and an outlet (4) through which an airflow is directed, and a fuel injector (10) for injecting fuel in the airflow. The combustor also comprises at least one catalytic element (12, 14, 15) for combusting the mixture of air and fuel. A fuel-evaporating device (7) is arranged for evaporating a liquid fuel, which device is heated by the catalytic element (12), either through combustion therein or by means of an electrical heating element (13) arranged adjacent thereto.
    Type: Grant
    Filed: July 5, 2006
    Date of Patent: September 20, 2011
    Assignee: Zemission AB
    Inventor: Anders Erik Vestin
  • Patent number: 7993130
    Abstract: Method of combustion with a gas burner having a burner head at one end of an inner gas pipe surrounded by an outer protective pipe, wherein gases from the burner head flow inside the inner pipe and inside the outer pipe and thereafter flow into an exhaust channel. The inner pipe terminates short of the burner head; a sleeve downstream of the burner head, is inserted into and/or placed concentrically with the inner pipe so that the sleeve orifice is located within the inner pipe; a gap is provided between the opening of the inner pipe and the sleeve. The gap is sized such that the mixture of fuel and combustion air from the burner head and recycled exhaust gases passing through the gap will be mixed in quantities at which the temperature of combustion will be lower than the temperature in which NOx is formed.
    Type: Grant
    Filed: October 10, 2005
    Date of Patent: August 9, 2011
    Assignee: Sandvik Intellectual Property AB
    Inventors: Thomas Lewin, Pauli Mäenpää, Jörgen Sjöberg, Ole Stadum
  • Patent number: 7975628
    Abstract: The combustion system for implementing the process has a combustion grate, hoppers below the combustion grate for supplying primary combustion gas through the grate and nozzles that lead into the furnace above the combustion grate to supply secondary combustion gas. At least one extraction duct for flue gas is provided at the rear end of the furnace above the combustion grate. This duct is connected to the suction side of a fan. The pressure side is connected to nozzles arranged in the upper area of the flue gas pass. The nozzle height allows the flue gases a residence time of at least 1 second after secondary gas is supplied.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: July 12, 2011
    Assignees: Martin GmbH für Umwelt- und Energietechnik, Covanta Energy Corporation
    Inventors: Johannes Martin, Joachim Horn, Oliver Gohlke
  • Patent number: 7959431
    Abstract: A burner fires into a radiant tube to provide a downstream flow of combustion products within the radiant tube. Staged fuel is injected upstream into the radiant tube. A recirculation conduit inside the radiant tube receives the staged fuel along with combustion products that are inspirated into the recirculation conduit by the staged fuel. The recirculation conduit has an outlet for discharging a mixture of the inspirated combustion products and staged fuel into the downstream flow of combustion products.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: June 14, 2011
    Assignee: Fives North American Combustion, Inc.
    Inventor: Dennis E. Quinn
  • Patent number: 7914280
    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: Grant
    Filed: May 19, 2005
    Date of Patent: March 29, 2011
    Assignee: Innovative Energy, Inc.
    Inventors: Andrew Schlote, Phil Gerard Langhorst
  • Patent number: 7891971
    Abstract: Combustion head and method for combusting liquid and/or gaseous fuel having a flame front distanced downstream from the combustion head, in which fuel is discharged in a downstream direction radially outward at an angle at the end of the combustion head located downstream toward at least several guide devices and into a combustion chamber.
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: February 22, 2011
    Assignee: Elco Burners GmbH
    Inventors: Thomas Schmidt, Urte Donnerstag, Hans-Jurgen Stittrich
  • Patent number: 7766649
    Abstract: A direct flame impingement method and apparatus employing at least one multi-ported, internally recuperated burner. The burner includes an innermost coaxial conduit having a first fluid inlet end and a first fluid outlet end, an outermost coaxial conduit disposed around the innermost coaxial conduit and having a combustion products outlet end proximate the first fluid inlet end of the innermost coaxial conduit and a combustion products inlet end proximate the first fluid outlet end of the innermost coaxial conduit, and a coaxial intermediate conduit disposed between the innermost coaxial conduit and the outermost coaxial conduit, whereby a second fluid annular region is formed between the innermost coaxial conduit and the intermediate coaxial conduit and a combustion products annular region is formed between the intermediate coaxial conduit and the outermost coaxial conduit.
    Type: Grant
    Filed: March 7, 2005
    Date of Patent: August 3, 2010
    Assignee: Gas Technology Institute
    Inventors: Hamid A. Abbasi, Harry Kurek, Yaroslav Chudnovsky, Vladimir G. Lisienko, German K. Malikov
  • Patent number: 7762806
    Abstract: An afterburner device and a method for operating an afterburner device, especially for chemical reformers for obtaining hydrogen, for making heat available from fuels and/or residual gases from a reforming process and/or a fuel cell process. In this context, heat is supplied in a controlled manner from recirculated combustion gases to a first housing and/or a combustion chamber situated in it and at least in part filled with heat resistant, open-pored foamed ceramics. The regulation takes place, for instance, based on a temperature recorded in the combustion chamber using an infrared light measurement.
    Type: Grant
    Filed: September 3, 2003
    Date of Patent: July 27, 2010
    Assignee: Robert Bosch GmbH
    Inventors: Guenter Hoenig, Frank Miller
  • Patent number: 7749290
    Abstract: A method of cooling syngas in a gasifier is provided. The method includes channeling cooling fluid through at least one platen that extends at least partially through a reaction zone of the gasifier, and circulating reactant fluid around the at least one platen to facilitate heat transfer from the reactant fluid to the cooling fluid.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: July 6, 2010
    Assignee: General Electric Company
    Inventor: Paul Steven Wallace
  • Patent number: 7670135
    Abstract: A low NOx burner and method wherein (a) combustion air flows through the interior of the burner in a manner effective for drawing an amount of inert flue gas diluent from the fired heating system into the combustion air stream, preferably via one or more induction channels provided through the burner wall, and/or (b) air or an inert gas is discharged into the induction channel(s) in a manner effective for delivering flue gas into the combustion air stream.
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: March 2, 2010
    Assignee: Zeeco, Inc.
    Inventors: Darton J. Zink, Rex K. Isaacs, John McDonald, Tim Kirk, Cody L. Little
  • Patent number: 7614877
    Abstract: A gas range having a cook top and a gas burner assembly connected to a source of gas having a variable flow rate. The burner assembly is positioned in the cook top. The gas burner assembly has a burner body with a gas input, the gas input is in a first flow communication with a first chamber and a second flow communication with a second chamber. Each chamber has at least one port in an exterior wall for flow communication to an area external of the burner body for combustion of the gas. The second flow communication has a tripping pin to deflect flow during high flow conditions and to not deflect flow during low flow conditions. A burner cap is positioned on the burner body.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: November 10, 2009
    Assignee: General Electric Company
    Inventors: Paul E. McCrorey, Paul Bryan Cadima, Shree Kumar