Row Of Stationary Blades Coaxial With Disperser Whirls Air Patents (Class 431/183)
  • Patent number: 10427172
    Abstract: Separation device comprising a swirler of a sheet material comprising a plurality of vanes (4) with a flow entrance side edge (6) defining an entrance angle (?) and a flow exit side edge (8) defining an exit angle (?). The flow entrance side edge and flow exit side edge extend from a center section (3) to a peripheral edge (9), which extends between end points of the flow entrance edge and the flow exit edge. The entrance angle is larger than the exit angle.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: October 1, 2019
    Assignee: SHELL OIL COMPANY
    Inventors: Hugo Altorf, Jannes Köppen, Joost Jacobus Kroon
  • Patent number: 9644926
    Abstract: A computer regulated and controlled ignition and combustion pyrotechnic display apparatus and method for effecting the same, that includes a graticulate array of flue members oriented with an ignition end disposed in a common plane, each flue member having a thermal potential effective by introduction of combustible fuel thereinto, said thermal potential variable according to mechanical manipulation of at least one variable aperture dispositional between a minimum and a maximum opening and a pressure of said fuel introducible therethrough, wherein a sparking nexus, disposed at the ignition end of each flue member, is selectively productive of a spark when an electrical current is passed therethrough to ignite fuel delivered into said flue member, whereby each flue member is ignitable as a luminous and fiery picture element appropriate for rendering figures in fire in synchrony to the production of signals generated at a performance or programmed by an operator.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: May 9, 2017
    Inventor: Peter Greenwald
  • Patent number: 9400105
    Abstract: This invention relates to a premix burner for operating a heat generator, the burner at least having a swirl generator, a mixing section downstream of the swirl generator and a transition piece for transferring the swirl flow from the swirl generator into the mixing section. The invention further refers to a transition piece for such a premix burner. The transition piece includes an inlet, connected to the swirl generator, an outlet, connected to the mixing tube, and a continuing flow limiting interior contour between said inlet and said outlet, wherein at least in an inlet section said interior contour is curved radially inwards towards the inner diameter of the mixing tube and wherein at the outlet the interior contour is flush with an interior flow limiting contour of the mixing tube.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: July 26, 2016
    Assignee: GENERAL ELECTRIC TECHNOLOGY GMBH
    Inventors: Franklin Marie Genin, Marcel Rieker, Bettina Paikert
  • Patent number: 9328917
    Abstract: A flow control device for partitioning a fluid flow from a common supply stream into at least two delivery streams by means of a common reciprocating damper such as a cylindrical sleeve damper. A combustion device using such a flow control device to partition a gas supply thereto and a combustion apparatus such as a boiler incorporating such combustion devices are also described.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: May 3, 2016
    Assignee: DOOSAN BABCOCK LIMITED
    Inventors: Safwan Yousif, Babak Aghdaee, Gerard John Hesselmann
  • Patent number: 8869535
    Abstract: A turbine burner is provided. The turbine burner has a secondary feed unit and a primary feed unit. The primary feed unit has a primary mixing tube and a fuel nozzle that are arranged concentrically around the secondary feed unit. The primary mixing tube and the fuel nozzle have a fluid flow connection. The fuel nozzle has an annular wall that is radially spaced in the axial direction from the secondary feed unit such that a gap height is fainted by the annular wall and the secondary feed unit. The annular wall has an inside wall directed toward the secondary feed unit and having blades with a leading edge on the upstream side. The fuel nozzle has an inlet and the blades have an axial distance from the inlet. The ratio of the distance to the gap height is greater than 1 and less than the gap height.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: October 28, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Boris Ferdinand Koch, Berthold Köstlin, Bernd Prade
  • Publication number: 20140308619
    Abstract: A lean premix burner has a center fire nozzle, which includes radial gas outlets and a ring of outlets. The gas outlets from the center fire nozzle are fed from a manifold. The center fire gas is controlled separately from the main gas supply, which has several advantages, including enhanced turn down capability.
    Type: Application
    Filed: January 31, 2014
    Publication date: October 16, 2014
    Applicant: Hauck Manufacturing Company
    Inventor: Bruce Wartluft
  • Publication number: 20140234787
    Abstract: A mixed-fuel vacuum burner-reactor includes a primary combustion chamber having a conical interior and a first set of directing blades. The conical interior is connected to an intake manifold on one end and a reduction nozzle on the other end. Injectors are mounted perpendicularly to the reduction nozzle to inject a second fuel into the primary combustion chamber. The reduction nozzle is connected to a cylindrical secondary combustion chamber having a second set of directing blades configured to direct air into the secondary combustion chamber. Methods of efficiently burning mixed fuels in a triple-vortex vacuum burner-reactor are also disclosed. Vacuum conditions are created and fuels are introduced into a conical primary combustion chamber. The fuels are passed over a first set of directing blades to form three vortices before additional fuels are injected in a direction opposite to a direction of rotation of the first set of fuels.
    Type: Application
    Filed: February 20, 2013
    Publication date: August 21, 2014
    Inventor: Jorge DE LA SOVERA
  • Patent number: 8777609
    Abstract: A heater having first and second oxygen depletion sensors and a main burner injector and configurable for the delivery of at least first and second types of fuels.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: July 15, 2014
    Assignee: Coprecitec, S.L.
    Inventor: Ruben Mateos Martin
  • Patent number: 8775049
    Abstract: A method for evaluating the state of a fuel-air mixture and/or the combustion in a combustion chamber of an internal combustion engine, with sample signals of flame light signals being stored in a database, and with flame light signals of the combustion in the combustion chamber being detected and compared with the stored sample signals, and with an evaluation of the state being output in the case of coincidence between the measured and stored signal patterns. In order to enable the monitoring of the combustion in the simplest possible way the sample signals in the database are stored with the assigned emission values and an evaluation of the state of the combustion is performed with respect to the obtained emissions in the case of coincidence between the measured and stored signal patterns for the combustion chamber of the respective cylinder.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: July 8, 2014
    Assignee: AVL List GmbH
    Inventors: Ernst Winklhofer, Heribert Fuchs, Alois Hirsch, Harald Philipp
  • Publication number: 20140170573
    Abstract: A method of providing oxygen enriched fuel into a combustion atmosphere of a furnace includes injecting a fuel stream into the combustion atmosphere, and providing oxygen into the fuel stream during the injecting of the fuel stream into the combustion atmosphere. A fluid injection apparatus for a combustion atmosphere of a furnace is also provided and includes a housing having a space therein and a discharge orifice in communication with the space, a lance for oxygen disposed in the space and in communication with the discharge orifice, and an inlet duct for a fuel stream in communication with the space external to the lance.
    Type: Application
    Filed: March 14, 2013
    Publication date: June 19, 2014
    Inventor: Neil G. SIMPSON
  • Patent number: 8689707
    Abstract: A replacement burner system which facilitates reduction of nitrous oxide produced during combustion of a fuel. The replacement burner system comprising a fuel supply duct having an inlet and an outlet with a fuel deflector located within the fuel supply duct to facilitate redistribution of a flow of the fuel. An adjustable coal nozzle is located within the fuel supply duct between the fuel deflector and the outlet. An exterior surface of the fuel supply duct supports an air swirling device, and the air swirling device obstructs between 65% and 75% of the transverse flow area, located between an exterior surface of the fuel supply duct and the inwardly facing surface of the venturi register, after the replacement burner system is accommodated within the windbox of a combustion boiler.
    Type: Grant
    Filed: May 26, 2006
    Date of Patent: April 8, 2014
    Assignee: Fuel Tech, Inc.
    Inventors: Peter D. Marx, Robert W. Pickering, Charles E. Trippel
  • Publication number: 20140065562
    Abstract: This invention relates to a premix burner for operating a heat generator, the burner at least having a swirl generator, a mixing section downstream of the swirl generator and a transition piece for transferring the swirl flow from the swirl generator into the mixing section. The invention further refers to a transition piece for such a premix burner. The transition piece includes an inlet, connected to the swirl generator, an outlet, connected to the mixing tube, and a continuing flow limiting interior contour between said inlet and said outlet, wherein at least in an inlet section said interior contour is curved radially inwards towards the inner diameter of the mixing tube and wherein at the outlet the interior contour is flush with an interior flow limiting contour of the mixing tube.
    Type: Application
    Filed: August 30, 2013
    Publication date: March 6, 2014
    Applicant: ALSTOM Technology Ltd
    Inventors: Franklin Marie GENIN, Marcel Rieker, Bettina Paikert
  • Patent number: 8561602
    Abstract: Gas fire devices are provided that produce a swirling flame by passive means using the kinetic energy of gas exiting through burner ports located in a burner and the kinetic energy of air drawn through louvers or flaps radially positioned on the base of a plenum. Situated above the burner and plenum is a chimney, which surrounds the flame and may be a translucent or transparent material to help observers better see the flame.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: October 22, 2013
    Assignee: Agio International Company, Ltd.
    Inventors: Derik Andors, Stephen F. Richardson, Douglas DeFouw
  • Patent number: 8517719
    Abstract: A simple, economical and reliable swirl register [1000] is described for use with a wall burner of a commercial boiler. It employs a number of spaced swirl blocks [1150] that connect side plates [1110, 1120]. A number of moveable vanes [1130] are provided in the air ducts [1155] created between the swirl blocks [1150]. The vanes [1130] are attached to vane rods [1160] that operate the vanes [1130]. The swirl blocks [1150] are lightweight and rigid structures for holding the side plate [1110] a fixed distance from side plate [1120]. The block construction reduces binding of the vanes [1130] as the swirl register [1000] receives differential heating. The vane rods [1160] extend through a windbox front plate [1250] outside of the windbox area. A linkage assembly [1200] rotates the vane rods [1160]. A motor and gearbox [1230] cause all vanes [1130] to rotate the same amount.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: August 27, 2013
    Assignee: ALSTOM Technology Ltd
    Inventor: Oliver G. Briggs, Jr.
  • Patent number: 8469700
    Abstract: A system for predicting fouling and corrosion of a combustion system in an industrial process includes a pipe, a restrictive element, and a fouling and corrosion detector. The pipe contains a fuel. The restrictive element is coupled to the pipe and the fuel passes through the restrictive element. The fouling and corrosion detector is coupled to the pipe and is adapted to detect a characteristic signature of the restrictive element and to generate an alarm if a change in the detected signature exceeds a predetermined limit relative to a baseline signature.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: June 25, 2013
    Assignee: Rosemount Inc.
    Inventors: Marcos Peluso, Scott Eliason, Gregory C. Brown
  • Patent number: 8454353
    Abstract: The invention relates to a method for evaluating the state of a fuel/air mixture and/or the combustion in a combustion chamber of an internal combustion engine, with sample signals of flame light signals, preferably the flame intensity (FI), with associated mixture states being saved to a database, with flame light signals, preferably the flame light intensity (FI), of the combustion in the combustion chamber being detected and thus being compared with the saved sample signals, and with conclusions being drawn on the state of the mixture in the combustion chamber in the case of coincidence between measured and saved signal patterns. In order to enable a simple and precise monitoring of the mixture state and the combustion it is provided that a pressure measurement is also performed in the cylinder simultaneously with the detection of the flame light signals.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: June 4, 2013
    Assignee: AVL List GmbH
    Inventor: Ernst Winklhofer
  • Patent number: 8424310
    Abstract: A mixing chamber with a wall and at least one vortex generating element arranged on the wall is provided. The vortex generating element has at least three surfaces, at least one of the surfaces forming a top surface and the other surfaces forming at least first and second side surfaces, the first and second side surfaces arranged not in parallel, the top surface being in contact with the wall via a front edge of the top surface, the front edge extending traverse to a flow direction, the top surface further abutting the first and second side faces forming first and second edges, the first side surface extending in parallel to the flow direction so that the first edge does not contribute to generating a vortex, and the second side surface extending not in parallel to the flow direction so that the second edge contributes to generating the vortex.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: April 23, 2013
    Assignee: Siemens Aktiengesellschaft
    Inventor: Khawar Syed
  • Patent number: 8393893
    Abstract: In order to provide a rotary-furnace burner in which the quantity fraction of cost-effective particulate secondary fuels to be used as energy carriers can be increased and the configuration of the burner flame can be influenced, even during the operation of the burner, it is proposed, according to the invention, to arrange an expansion chamber open towards the burner mouth and having a widened cross section, as compared with the tube or individual tubes in the burner in front of the issue of the tube or tubes for blowing out the secondary fuels, and to make the axial length and the volume of the expansion chamber variable, during the operation of the burner, by means of the axial displacement of the secondary-fuel tubes, so that the particulate secondary fuel particles blown out at the burner mouth with a considerably reduced velocity do not fly past the burner flame, but, instead, burn out in the flame.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: March 12, 2013
    Assignee: KHD Humboldt Wedag GmbH
    Inventors: Ernst Schröder, Alexander Knoch
  • Patent number: 8390981
    Abstract: A flare ignition apparatus for igniting a flare having a power supply, a flare igniter, and a power-out cable for providing a spark. The flare igniter can be solar powered, and can have a water-tight enclosure, an actuating member, a coil, a condenser, and time-delay relays. The power-out cable can be disposed proximate a designated flare point on a flare stack.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: March 5, 2013
    Inventors: Bruce Treadaway, William C. Treadaway
  • Patent number: 8308477
    Abstract: An apparatus and process is provided for combining fuel and combustion air to produce a mixture. The mixture is burned in a combustion chamber to produce a flame.
    Type: Grant
    Filed: February 28, 2007
    Date of Patent: November 13, 2012
    Assignee: Honeywell International Inc.
    Inventors: Douglas M. Perry, Jeffrey T. Rafter
  • Patent number: 8177547
    Abstract: The invention relates to a method for starting a burner for combusting synthesis gases, wherein said burner comprises first and second fuel passages, the first fuel passage encompasses the second fuel passage in a substantially concentric manner and the gas transferred to the burner is mixed with combusting air and is combusted. According to said invention, in order to start the burner, the second fuel passage is first loaded with a synthesis gas to a predefined burner power at a first starting phase and the first fuel passage is loaded with the synthesis gas at a second starting phase.
    Type: Grant
    Filed: November 15, 2005
    Date of Patent: May 15, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: Berthold Köstlin, Frank Hannemann, Andreas Heilos, Gerhard Zimmermann
  • Publication number: 20120064465
    Abstract: A combustion apparatus is described having a generally elongated combustion container with a longitudinal axis, a proximal end, an exhaust end spaced axially forward from the proximal end, a proximal end wall, an exhaust end wall, and an all-around sidewall extending between the end walls and about the longitudinal axis. The end walls and sidewall substantially define a combustion chamber. The apparatus also includes a combustion chamber exhaust positioned on the exhaust end, a fuel-air delivery system positioned to direct fuel into the combustion chamber, and an air inlet located generally tangentially on the sidewall to direct air flow generally tangentially into the chamber and induce swirl about the longitudinal axis.
    Type: Application
    Filed: September 8, 2011
    Publication date: March 15, 2012
    Applicant: General Vortex Energy, Inc.
    Inventors: Anatoli Borissov, Vladimir Shtern
  • 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: 8033821
    Abstract: A premix burner is provided, with a swirl generator and a downstream mixer tube for combusting gaseous and liquid fuel which during entry of combustion air is introduced into the burner interior space of the swirl generator and/or is introduced into the burner interior of the swirl generator on a burner axis, and also with a fuel lance which is arranged on the burner axis. The premix burner, in the transition section from the swirl generator to the mixer tube, includes at least one additional feed for introducing gaseous and/or liquid premix fuel from the wall region into the burner interior space of the mixer tube.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: October 11, 2011
    Assignee: Alstom Technology Ltd.
    Inventor: Adnan Eroglu
  • Patent number: 7878797
    Abstract: A burner assembly including a housing having an air inlet and a burner end, a motor, and an impeller mounted in the housing. The impeller is in fluid communication with the air inlet, in mechanical communication with the motor, and adapted to direct air from the air inlet towards the burner end of the housing. The burner assembly also includes at least one pre-mix gas injection nozzle mounted in the housing. Each of the at least one pre-mix gas injection nozzle has at least one orifice adapted to direct gaseous fuel into the housing. The burner assembly further includes a spin vane comprising at least one spin vane blade. The spin vane is mounted in the burner end of the housing and adapted to direct the flow of air in the burner end. The burner assembly still further includes a flattening screen located in the housing downstream from the impeller and an igniter mounted in the burner end of the housing.
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: February 1, 2011
    Assignee: Astec, Inc.
    Inventors: Malcolm Swanson, Michael Swanson
  • Patent number: 7849682
    Abstract: An aftertreatment burner for an exhaust treatment device is disclosed. The aftertreatment burner may have a mounting member, and a canister connected to the mounting member to form a combustion chamber. The aftertreatment burner may also have a fuel injector disposed within the mounting member to selectively inject fuel into combustion chamber, and an air supply line configured to supply air to the combustion chamber. The aftertreatment burner may further have an igniter disposed within the mounting member to ignite the fuel/air mixture, and a thermal couple configured to detect the ignition.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: December 14, 2010
    Assignee: Caterpillar Inc
    Inventors: Robert L. Miller, Thomas Randall McClure, Kevin James Karkkainen
  • Publication number: 20100190119
    Abstract: An apparatus and process is provided for combining fuel and combustion air to produce a mixture. The mixture is burned in a combustion chamber to produce a flame.
    Type: Application
    Filed: April 1, 2010
    Publication date: July 29, 2010
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Douglas M. Perry, Jeffrey T. Rafter
  • Patent number: 7753677
    Abstract: Burners in prior art exhibit combustion instabilities in certain ranges. The operating range of burners is restricted by said instabilities. In an inventive burner, the combustible has a concentration distribution, whereby the concentration of the combustible reduces in a radial direction from the interior to the exterior.
    Type: Grant
    Filed: August 20, 2003
    Date of Patent: July 13, 2010
    Assignee: Siemens Aktiengesellschaft
    Inventors: Peter Berenbrink, Malte Blomeyer, Werner Krebs, Bernd Prade, Holger Streb
  • Publication number: 20100037614
    Abstract: Disclosed is a fuel nozzle for a combustor including a mixing passage through which fluid is directed toward a combustion area and a plurality of swirler vanes disposed in the mixing passage. Each swirler vane of the plurality of swirler vanes includes at least one fuel hole through which fuel enters the mixing passage in an injection direction substantially parallel to an outer surface of the plurality of swirler vanes thereby decreasing a flameholding tendency of the fuel nozzle. Further disclosed is a method of operating a fuel nozzle for a combustor including flowing a fluid through a mixing passage past a plurality of swirler vanes and injecting a fuel into the mixing passage in an injection direction substantially parallel to an outer surface of the plurality of swirler vanes.
    Type: Application
    Filed: August 13, 2008
    Publication date: February 18, 2010
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: William David York
  • Patent number: 7566218
    Abstract: A burner assembly has a burner head and a deflector plate extending radially therefrom and across a firetube housing for supporting the burner assembly therein. The deflector plate has a plurality of angled vanes for re-directing secondary combustion air flowing through the housing. Secondary air is deflected away from a nozzle tip at the burner head to minimize lifting of the flame by the deflector plate or by a low pressure ring formed around the nozzle tip above the deflector plate for creating an area of low pressure. Preferably, a combination of the deflector plate and low pressure ring provides a stable flame positioned at the nozzle tip under low-fire and high-fire conditions enabling use of a pilotless ignition and flame sensing system which is consistent under low and high fire conditions. More preferably, the deflector plate supports the igniter and optionally a heat return tube for heat tracing of the freeze-prone burner assembly components.
    Type: Grant
    Filed: September 14, 2005
    Date of Patent: July 28, 2009
    Assignee: ACL Manufacturing Inc.
    Inventor: Chris Aldrich
  • Patent number: 7524186
    Abstract: A low emissions burner includes a diffusion burner surrounded by an annular array of premix burners. The diffusion burner operates at maximum swirl air flow and at a low constant fuel rate to reduce NOx emissions. The diffusion burner provides a stable swirling diffusion flame. An annular array of premix burners surrounds the diffusion burner and provides a non-swirling premix flame about the diffusion flame to advantageously provide a higher heat content about the periphery of the burner flame to facilitate industrial drying processes using the burner. The diffusion burner flame maintains the premixed flame stabilized. Water injection nozzles are provided each of the premix and diffusion burners.
    Type: Grant
    Filed: April 21, 2003
    Date of Patent: April 28, 2009
    Assignee: Gencor Industries, Inc.
    Inventors: David F. Brashears, Grover T. Butler, Joseph T. Mollick
  • Publication number: 20090029302
    Abstract: A burner system that utilizes a plurality of single stage rapid mix burner cells which are organized into one or more self-stabilizing matrices. The assemblage combines the advantageous operating characteristics of nozzle mix and premixed type burners and achieves extremely low NOx, CO, and hydrocarbon emissions.
    Type: Application
    Filed: July 24, 2008
    Publication date: January 29, 2009
    Inventor: Steven Bortz
  • Patent number: 7448218
    Abstract: The invention relates to a pre-mix burner for burning a low-calorie combustion gas, said burner comprising an air duct which extends along an axis of the burner and can be used to supply combustion air. A swirling device is arranged in the air duct and is used to apply a swirling motion to the combustion air. An injection device for the low-calorie combustion gas is provided downstream of the swirling device. The injection device comprises inlets for the combustion gas, such that the formation of wake regions in the air channel is prevented. The invention also relates to a method for burning a low-calorie combustion gas, according to which a swirling motion is applied to the combustion air, low-calorie combustion gas is injected into the swirled combustion air and intensively mixed therewith, and the mixture is then burned.
    Type: Grant
    Filed: February 15, 2005
    Date of Patent: November 11, 2008
    Assignee: Siemens Aktiengesellschaft
    Inventors: Andreas Heilos, Berthold Köstlin, Bernd Prade
  • Patent number: 7430970
    Abstract: A new burner apparatus and method of combusting fossils fuels for commercial and industrial application is provided wherein the new burner apparatus achieves low NOx emissions by supplying oxygen to the center of the burner flame in as manners so as to create a fuel rich internal combustion zone within the burner flame.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: October 7, 2008
    Inventors: Albert D. LaRue, Alan N. Sayre, William J. Kahle, Hamid Sarv, Daniel R. Rowley
  • Patent number: 7416404
    Abstract: A feed injector for use in a gasification apparatus comprising plural concentric tubes converging at an outlet tip, at least one interior tube of the plural concentric tubes having a plurality of static, helically-twisted mixing elements fixed to an exterior surface thereof.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: August 26, 2008
    Assignee: General Electric Company
    Inventor: Henry Choisun Chan
  • Patent number: 7367798
    Abstract: An air swirler capable of liquid fuel atomization for a fuel fired burner in a furnace or boiler having a hollow guide pipe supporting several swirl blades at an end adjacent to the furnace. Openings connected by tunnels to the inside of the guide pipe are provided in the trailing edges of each swirl blade. A fuel pipe is concentric with the guide pipe forming an annular space therebetween. Gaseous substances such as oxygen or natural gas are provided through the annular space and liquid fuel is provided through the fuel pipe. The fuel and gaseous substances travel through the tunnels to the openings for liquid fuel atomization and pre-mixing at the burner throat to reduce NOx formation.
    Type: Grant
    Filed: June 8, 2005
    Date of Patent: May 6, 2008
    Inventor: Hamid Sarv
  • Patent number: 7267809
    Abstract: The invention relates to a burner with a burner head (1) and a gas feed pipe (2) that is located in the burner head (1) and that is surrounded by an ring channel (3) for feed of another gas. In the gas feed pipe (2) and in the ring channel (3), there are means (10, 11) for producing a swirl of the gas flowing through the gas feed pipe (2) and that flowing through the ring channel (3).
    Type: Grant
    Filed: October 18, 2001
    Date of Patent: September 11, 2007
    Assignee: The Linde Group
    Inventors: Harald Ranke, Michael Heisel, Sebastian Muschelknautz, Hanno Tautz
  • Publication number: 20070207426
    Abstract: An apparatus and process is provided for combining fuel and combustion air to produce a mixture. The mixture is burned in a combustion chamber to produce a flame.
    Type: Application
    Filed: February 28, 2007
    Publication date: September 6, 2007
    Applicant: Maxon Corporation
    Inventors: Douglas M. Perry, Jeffrey T. Rafter
  • Patent number: 7229483
    Abstract: A method for gasifying carbonaceous materials to fuel gases comprises the formation of an ultra-superheated steam (USS) composition substantially containing water vapor, carbon dioxide and highly reactive free radicals thereof, at a temperature of about 2400° F. (1316° C.) to about 5000° F. (2760° C.). The USS composition comprising a high temperature clear, colorless flame is contacted with a carbonaceous material for rapid gasification/reforming thereof. The need for significant superstoichiometric steam addition for temperature control. Methods for controlling a gasification/reforming system to enhance efficiency are described. A USS burner for a fluidized bed gasification/reforming reactor, and methods of construction, are described.
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: June 12, 2007
    Inventor: Frederick Michael Lewis
  • Patent number: 7066728
    Abstract: An improved process for burning solid fuel particles in a combustion chamber and creating a flue gas is disclosed. The method comprises creating a fuel gas stream by mixing the solid fuel particles with a conveying gas, transporting the fuel gas stream through a fuel duct terminating at the combustion chamber at a fuel exit plane and injecting an oxygen stream through an injection device into said fuel gas at an oxygen injection location selected to create a mixing zone to mix the oxygen stream and the fuel gas stream immediately prior to or coincident with combustion of the fuel. Operating parameters of the process can be varied to optimally reduce NOx emissions.
    Type: Grant
    Filed: January 15, 2004
    Date of Patent: June 27, 2006
    Assignee: American Air Liquide, Inc.
    Inventors: Fabienne Chatel-Pelage, Ovidiu Marin, Scott Macadam, Erwin Penfornis
  • Patent number: 6981866
    Abstract: A burner for a thermal post-combustion device comprises a combustion nozzle, which comprises a substantially hollow-cylindrical base member (1) at least virtually closed at one end by a cover (2). Fuel gas is supplied thereto axially at a particular pressure. The fuel gas flows out radially via main discharge openings (8) of the combustion nozzle. These main discharge openings (8) are at such a radial distance from the axis of the base member (1) and exhibit such a cross-section that, at the particular pressure of the supplied fuel gas, individual flames form at the main discharge openings (8) which substantially do not overlap. While maintaining the same total burner power, in this way the individual flames remain colder than in known burners, which produce a cohesive ball of flame instead of individual flames.
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: January 3, 2006
    Assignee: Eisenmann Maschinenbau KG (Komplementar: Eisenmann-Stiftung)
    Inventor: Apostolos Katefidis
  • Patent number: 6951454
    Abstract: A dual fuel burner including an elongated supply pipe and a gas injector for a boiler furnace having a plurality of peripheral openings around a center opening. The peripheral openings are pitched radially away from the longitudinal axis of the gas injector and also pitched either clockwise or counter-clockwise, to impart a swirling motion to gaseous fuel exiting the injector through the openings. A first sleeve member is concentrically spaced about the supply pipe and the gas injector to form an inner annular passageway for conveying a mixture of primary air and pulverized coal to the furnace combustion zone. A second sleeve member is concentrically spaced about the first sleeve member to form an outer annular passageway for conveying secondary air to the furnace combustion zone, and a plurality of circumferentially spaced vanes mounted within the outer annular passageway for inducing a swirling motion to the secondary air discharging from the outer annular passageway into the furnace combustion zone.
    Type: Grant
    Filed: May 21, 2003
    Date of Patent: October 4, 2005
    Assignee: The Babcock & Wilcox Company
    Inventors: Hamid Sarv, Ronald C. Lenzer
  • Patent number: 6908303
    Abstract: A premixed air-fuel mixture supply device is joined to a combustor liner included in a combustor for a gas turbine or an aircraft engine. The premixed air-fuel mixture supply device has a pilot fuel injection unit having an inner wall, and a prevaporizing, premixing main fuel injection unit having an outer wall surrounding the inner wall. A combustion air passage is defined by the inner and the outer wall. An intermediate wall is disposed in the combustion air passage so as to divide an upstream part of the combustion air passage into a secondary combustion air passage surrounding the inner wall, and an outer combustion air passage surrounding the intermediate wall. Fuel inject holes are formed in the intermediate wall to inject fuel radially outward into the outer combustion air passage. A swirling device is disposed in the secondary combustion air passage to swirl combustion air flowing through the secondary combustion air passage. An atomization lip is formed in a tail part of the intermediate wall.
    Type: Grant
    Filed: February 2, 2004
    Date of Patent: June 21, 2005
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Takeo Oda, Hiroyuki Ninomiya, Masayoshi Kobayashi
  • Patent number: 6872070
    Abstract: A U-tube diffusion flame burner assembly having improved flame stabilization with no undesirable acoustic effects. The burners are axial units comprised of flame holders and combustors. The flame holders includes secondary air tubes to support the flow of secondary air that have helical walls forming helical passageways along at least a portion of its inner diameter to impart a swirl to the secondary air. The helical passageways impart a swirl to the secondary air exiting the passageways while simultaneously acting as a heat exchanger to heat primary air. The flame holders includes fuel tubes having first ends connected to a fuel supply and second flame ends. A plurality of radially oriented apertures are located at the second flame ends to distribute fuel in a radial direction. Primary air tube surrounds at least the flame ends of the fuel tubes and extend axially from first air supply ends to second flame ends.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: March 29, 2005
    Assignee: Hauck Manufacturing Company
    Inventors: Edward E. Moore, John A. Marino
  • Patent number: 6832481
    Abstract: A performance-enhancing fuel nozzle is disclosed. The nozzle suitable for use in combustors which combine high-swirl-number combustion in a pilot zone with low-swirl-number combustion in a main combustion zone. The nozzle includes a fuel delivery member adapted for fluid communication with a fuel source and a flow conditioning member having a fuel exit port. The fuel exit port is in fluid communication with the fuel supply and is adapted to ensure that the recirculation region adjacent the nozzle tip remains flame free. In one aspect of the invention, the fuel concentration profile of the nozzle is characterized by a radially-outward region that is flammable and a radially-inward region that is substantially non-flammable. In another aspect of the invention, the fuel exit port being is disposed a radially-outward portion of the flow conditioning member. In another aspect of the invention, the flow conditioning member is characterized by a swirl number lower than about 0.5.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: December 21, 2004
    Assignee: Siemens Westinghouse Power Corporation
    Inventors: Michael Herbert Koenig, Bernd Prade
  • Publication number: 20040234912
    Abstract: A gas injector for a furnace or boiler gas-fired burner has a plurality of peripheral openings around a center opening. The peripheral openings are pitched radially away from the longitudinal axis of the gas injector and also pitched either clockwise (CW) or counter-clockwise (CCW), to impart a swirling motion to gaseous fuel exiting the injector through the openings. The gas injector with the radial plus CW or CCW pitched peripheral openings has reduced flame length and lower CO emissions and only slightly elevated levels of NOx emissions relative to a gas injector with only radially pitched openings. The gas injector is useful in furnaces having small enclosures to prevent burner flames from impinging on the opposing walls.
    Type: Application
    Filed: May 21, 2003
    Publication date: November 25, 2004
    Inventors: Hamid Sarv, Ronald C. Lenzer
  • Publication number: 20040219469
    Abstract: A burner for a thermal post-combustion device comprises a combustion nozzle, which comprises a substantially hollow-cylindrical base member (1) at least virtually closed at one end by a cover (2). Fuel gas is supplied thereto axially at a particular pressure. The fuel gas flows out radially via main discharge openings (8) of the combustion nozzle. These main discharge openings (8) are at such a radial distance from the axis of the base member (1) and exhibit such a cross-section that, at the particular pressure of the supplied fuel gas, individual flames form at the main discharge openings (8) which substantially do not overlap. While maintaining the same total burner power, in this way the individual flames remain colder than in known burners, which produce a cohesive ball of flame instead of individual flames.
    Type: Application
    Filed: August 15, 2003
    Publication date: November 4, 2004
    Inventor: Apostolos Katefidis
  • Patent number: 6780004
    Abstract: A thermal post-combustion device for the purification of exhaust air comprises an outer housing surrounded by an insulating jacket, a combustion chamber bounded by a combustion chamber housing and arranged within the outer housing, and a burner chargeable with fuel and that comprises a burner nozzle and a first flame tube that surrounds the burner nozzle and connects the space between the outer housing and the combustion chamber housing to the combustion chamber. The burner includes at least one further flame tube that is arranged completely within the combustion chamber, and the end of the first flame tube lying inside the combustion chamber is surrounded by a further flame tube of larger radius so as to form an annular gap between the first flame tube and the further flame tube. In this way a circulating flow of the combustion air becomes possible inside the combustion chamber, which flow is guided repeatedly through the annular gap and the flame of the burner.
    Type: Grant
    Filed: August 16, 2002
    Date of Patent: August 24, 2004
    Assignee: Eisenmann Maschinenbau KG
    Inventor: Apostolos Katefidis
  • Patent number: 6733278
    Abstract: As with most burners and combustors, they utilize fuel and air mixtures. One of the important aspects of burning an air-fuel mixture is that of mixing. Ideally, the fuel should be uniformly distributed throughout the air when ignited. This results in the most complete burn, maximizing beat generation while minimizing unburned and incomplete-combustion products. This disclosure describes an apparatus for enhancing mixing of fuel and air. Combustion air is given a prerotation by passing it through a set of fins before the fuel is injected into the air. Then the mixture is passed through another set of fins, rotating the mixture in a direction opposite that which the air experienced, first.
    Type: Grant
    Filed: August 22, 2002
    Date of Patent: May 11, 2004
    Inventor: David P. Welden
  • Patent number: 6688109
    Abstract: The invention relates to a burner (100) having a combustion air duct (104), in which a swirl generator (109), which is formed from a number of swirl generator elements (108), is arranged in such a way that the swirl generator (109) can increase the mean velocity at which combustion air (112) flows through the swirl generator (109) to a Mach number of at least 0.4. This results in flow-acoustic decoupling of the combustion area from the combustion-air feed area.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: February 10, 2004
    Assignee: Siemens Aktiengesellschaft
    Inventor: Olaf Hein