Disperser Adjustably Mounted For Movement Relative To Furnace Wall Opening Patents (Class 431/189)
  • Patent number: 11162676
    Abstract: A head assembly for a radiant burner, an inlet assembly and a method are disclosed. The head assembly is for a radiant burner. The head assembly may include a housing defining a plurality of identical housing apertures extending therethrough, an insulator received by the housing and defining a corresponding plurality of identical, complimentarily-located insulator apertures extending therethrough, and at least one inlet assembly configured to be received by one of the identical housing apertures. Each inlet assembly may include a housing portion configured to be received by the one of the identical housing apertures, and an insulator portion configured to fill the complimentarily-located insulator aperture. In this way, a head assembly is provided which has a number of apertures, any of which may receive an inlet assembly.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: November 2, 2021
    Assignee: Edwards Limited
    Inventor: Andrew James Seeley
  • Patent number: 10465610
    Abstract: Combustion sections and sealing systems for fuel ignition assemblies of gas turbine engine combustion sections are provided. For example, a sealing system comprises a ferrule positioned on an outer surface of a ceramic matrix composite (CMC) combustor liner an aperture defined in the CMC liner; a sleeve positioned within an adapter of the fuel ignition assembly such that an inner end portion of the sleeve is in contact with the ferrule, the sleeve having an end wall that forms an inner boundary of a cavity defined by the sleeve; and a biasing member positioned within the cavity. The biasing member extends between a bushing and the end wall of the sleeve. The biasing member continuously urges the sleeve into contact with the ferrule to seal the aperture against fluid leakage therethrough. The exemplary sealing system may be part of a fuel ignition assembly of a gas turbine engine combustion section.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: November 5, 2019
    Assignee: General Electric Company
    Inventors: Fei Huang, Daniel Kirtley, Glenn Edward Wiehe
  • Patent number: 10408456
    Abstract: A combustion chamber assembly includes a combustion chamber casing, a combustion chamber, a plurality of fuel injectors and respective seals. The axis of each fuel injector head is arranged at an angle to the axis of the combustion chamber casing and parallel to the center line of the combustion chamber. Each seal is positioned between a fuel injector head and an aperture in an upstream wall of the combustion chamber. Each seal has an aperture extending through the seal which is arranged parallel to the axis of the combustion chamber casing or the flange of the fuel injector. Each fuel injector head has a part spherical surface located in a seal. The assembly provides a clearance required to engage, or disengage, a fuel injector head while minimizing the amount of material removed from the between the apertures in the upstream wall of the combustion chamber.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: September 10, 2019
    Assignee: ROLLS-ROYCE PLC
    Inventor: Thomas Gerard Mulcaire
  • Publication number: 20150132704
    Abstract: A burner retraction system includes a mounting assembly having a mounting sleeve, an insertion assembly having a tubular sleeve including an insertion portion sized and shaped for insertion into the mounting sleeve and an opening therethrough, a pivot rod rigidly mounted to and extending rearwardly from the mounting plate, and a pivot assembly rigidly mounted to the insertion sleeve and including a pivot tube surrounding and coaxially rotatable about the pivot rod, one of the pivot rod and the pivot tube having a slot including a straight axially extending portion and an angled portion extending rearwardly from the straight portion at an angle ?, and a stop pin slidably inserted into the slot in the one of the pivot rod and the pivot tube, the stop pin being secured to the other of the pivot rod and the pivot tube.
    Type: Application
    Filed: November 8, 2013
    Publication date: May 14, 2015
    Applicant: Air Products And Chemicals, Inc.
    Inventors: Michael David Buzinski, Reed Jacob Hendershot, Shailesh Pradeep Gangoli, Larry Saul Zelson
  • 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: 20150044618
    Abstract: A radiant wall burner apparatus. The apparatus includes an orifice for the introduction of fuel gas into an elongated mixing conduit for the directional flow and mixing of the fuel gas with combustion air provided through an inlet. The fuel gas and air mixture terminates through an adjustable burner tip. The radiant wall burner apparatus and burner tip allow for a two-leaf, adjustable radiant wall burner tip design that is less susceptible to heat deformation, flashback, and self-destruction, having fewer manufacturing issues, and having the capability to use hydrogen as a fuel source.
    Type: Application
    Filed: March 15, 2013
    Publication date: February 12, 2015
    Applicant: UOP LLC
    Inventor: Matthew Martin
  • Publication number: 20150000344
    Abstract: Apparatus includes a first and second conduits configured to form an annulus between them. An adjustable structure includes a body having an upper surface, a lower surface, and a circumferential surface abutting a portion of the internal surface of the second conduit. The structure is adjustable axially in relation to and removably attached to the first conduit via a hub. The hub defines a central passage for fuel or oxidant. The body has one or more non-central through passages configured such that flow of an oxidant or fuel therethrough causes the fuel or oxidant to intersect flow of fuel or oxidant exiting from the central passage in a region above the upper surface of the body.
    Type: Application
    Filed: September 15, 2014
    Publication date: January 1, 2015
    Inventor: Mark William Charbonneau
  • Publication number: 20140041559
    Abstract: A furnace-heating combustion apparatus that allows adjustment of a ratio between the amount of primary air and the amount of secondary air. A double-tube elongate burner extends through a rear wall portion of an air box disposed away from a furnace wall. The leading end portion of the burner is disposed inside a tube section such that a secondary air conduit is formed between an outer circumferential face of the leading end portion and an inner circumferential face of the tube section. A primary air conduit is provided at the leading end portion of the burner to introduce the air inside the air box from the rear end portion and cause it to flow toward the leading end portion. A burner supporting means is provided for to allow adjustment of the position of the burner in the longitudinal direction relative to the rear wall of the air box.
    Type: Application
    Filed: January 28, 2011
    Publication date: February 13, 2014
    Applicant: OSAKA GAS CO., LTD.
    Inventor: Makoto Hirano
  • Publication number: 20130260323
    Abstract: A method and apparatus for a burner adapted to heat a furnace or other environment of use. In particular, a burner for providing a fuel gas in combination with an oxidant to effect controlled reaction of the fuel gas in a manner to reduce NOx emissions is described. Combustion of the fuel gas is shifted from the burner combustor to a location outside the burner once the temperature within the furnace/radiant tube has reached a sufficient level to complete combustion of the fuel gas.
    Type: Application
    Filed: April 2, 2013
    Publication date: October 3, 2013
    Applicant: Eclipse, Inc.
    Inventors: Jianhui Hong, John William Wheeler
  • 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
  • Publication number: 20120174837
    Abstract: A combustor assembly in a coal burning power plant includes a combustor housing that defines a combustion zone in which pulverized coal is burned, at least one burner that introduces pulverized coal into the combustion zone, and an overfire air port that injects air into the combustor housing above the combustion zone, the overfire air port being generally not movable with respect to the combustor housing. The combustor assembly further includes a nozzle assembly associated with the overfire air port. The nozzle assembly includes a flow directing structure disposed within the overfire air port, which flow directing structure is tiltable with respect to the overfire air port to effect a change in a flow direction of the air being injected into the combustor housing through the overfire air port.
    Type: Application
    Filed: October 20, 2011
    Publication date: July 12, 2012
    Inventors: JIEFENG SHAN, Sergey Kaushansky
  • Patent number: 8197250
    Abstract: Disclosed are heaters having at least one adjustable fired burner and an adjustable fired burner for use with various types of heaters. The heaters may be part of an industrial processes such as petroleum refining. The adjustable burners are configured to be adjusted and positioned in any direction and then be locked into place. The adjustable burners may be adjusted automatically or manually. The ability to quickly adjust the position of an adjustable burner results in substantially less or virtually no damage to elements in the heater and provides for a more even distribution of heat within the heater.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: June 12, 2012
    Assignee: UOP LLC
    Inventors: Edward R. Morgan, Kenneth D. Peters, Dennis M. Clary
  • Patent number: 8177548
    Abstract: Device for mounting a forced-air burner 2 to a combustion chamber housing 4, having an attaching section to attach the device to a combustion chamber housing 4 demarcating a combustion chamber or to a unit 5 located on a combustion chamber housing 4 and a seating section to absorb forces and/or moments caused by a forced-air burner 2 located on the device.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: May 15, 2012
    Assignee: Elco Burners GmbH
    Inventors: Sebastian Kretschmer, Enrico Seemann, Torsten Lohse, Klaus Beckmann, Hendrik Kretzschmar
  • Patent number: 8105075
    Abstract: To enable a significant flow of liquid, gas or mixed hydrocarbons to be eliminated cleanly and safely, particularly during a well test phase, a burner comprises two concentric apertures, rotationally symmetrical about a common axis, enabling a hollow flame to be generated. The central aperture (20), intended for liquid or mixed products supplied by a conduit (12), consists of 2 concentric male (22) and female (21) conical parts, with the spacing (25) therebetween being continuously adjusted by the axial movement of the rod (23) which carries the male component (22) and which is centered by a centring component (24) in the conduit pipe (12), which carries the female component (21). The peripheral aperture (60), intended for gas products or an auxiliary airflow, also consists of two concentric male (62) and female (61) conical parts, between which the spacing (65) is not necessarily continuously variable during burning.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: January 31, 2012
    Inventor: Christian Bernard Huau
  • Publication number: 20110117507
    Abstract: Disclosed herein is a novel nozzle tip assembly 250 for rapid replacement of nozzle tips 200 in a solid fuel furnace. The nozzle tip assembly 250 employs a pivot pin assembly 410, 420 430 that is recessed and protected from corrosion/abrasion. It pivotally attaches the nozzle tip 200 to the stationary nozzle 110. It employs a fastener 411 that is accessible from through the central opening of the nozzle tip 200. This allows removal of the nozzle tip from inside the furnace greatly simplifying nozzle tip 200 replacement.
    Type: Application
    Filed: November 13, 2009
    Publication date: May 19, 2011
    Applicant: ALSTOM TECHNOLOGY LTD
    Inventors: Oliver G. Briggs, JR., Thomas J. Campanelli, Kevin T. Grzebien
  • Patent number: 7715585
    Abstract: In the speaker of the invention, a circular outer magnet type magnetic circuit 8, and a diaphragm 13 to which a circular voice coil 14 driven by the circuit is fixed are held on a rectangular frame 1. The circular outer magnet type magnetic circuit 8 is configured by: a yoke 9 in which a rectangular flange 9b is disposed in one end of a circular center pole 9a; a plate-like magnet 10 which has a circular center hole 10a, which is placed with forming a circular annular gap around the yoke center pole 9a, and which has a rectangular outer shape that is substantially identical with the outer shape of the yoke flange 9b; and a circular annular pole piece 11 which is substantially equal in inner diameter to the magnet center hole 10a, in which the outer diameter is substantially equal to short side dimensions of the yoke flange 9b and the magnet 10, and which cooperates with the yoke flange 9b to clampingly hold the magnet 10.
    Type: Grant
    Filed: March 11, 2005
    Date of Patent: May 11, 2010
    Assignee: Hosiden Corporation
    Inventors: Yuka Nagata, Masahide Suzuki
  • Publication number: 20090311639
    Abstract: The invention relates to a method for heating a charge using a flame generated by a lance and/or a burner, characterized in that, in a first phase, the flame is directed towards the charge and in that, in a second phase, the flame is directed more or less parallel to the charge.
    Type: Application
    Filed: July 5, 2007
    Publication date: December 17, 2009
    Applicant: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Ex ploitation Des Procedes Georges Claude
    Inventors: Nicolas Docquier, Bernard Labegorre, Bernard Zamuner
  • Patent number: 7566217
    Abstract: A variable orifice combustor unit 10 comprises an annular combustion chamber 12 extending about a central axis 14 and ending in a discharge nozzle 16. Charging of the chamber 12 takes place from combustion fuel and air supply chambers 18 and 20 via a fuel charging orifice array 22 and an air charging orifice array 24. The orifices 28.1, 28.2 of the orifice arrays 22, 24 are positioned and slanted at the same forward angle in the direction of the nozzle 16 to the effect of their central axes 38, 40 cutting along the longitudinal centre of the combustion chamber 12. The cross sectional sizes of the orifices 28 are adjustable by means of an orificed displaceably mounted cyndrically shaped covering body 44 for the fuel charging side and an orificed cylindrical body 58 for the air charging side both being displaceable in the direction of the axis 12.
    Type: Grant
    Filed: April 19, 2005
    Date of Patent: July 28, 2009
    Inventor: Johann Carl Mörsner
  • Patent number: 6946101
    Abstract: A burner for producing carbon black, includes a combustion chamber which can be supplied with fuel gas and an oxidizing gas in such a way that a diffusion flame producing carbon black particles is generated in the combustion chamber. The burner is also provided with a carbon-black discharge line. Carbon black formed in the combustion chamber can be discharged via an opening in the combustion chamber which feeds into the carbon-black discharge line. The discharge line is also provided with an opening through which an extinguishing gas can be supplied to the carbon-line. The burner permits the stable and reproducible production of carbon black particles which present well defined chemical and physical characteristics.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: September 20, 2005
    Inventor: Lianpeng Jing
  • Patent number: 6783357
    Abstract: A burner apparatus comprises a conduit adapted to convey preheated oxidant and having outlet and inlet ends, and a conduit adapted to convey preheated fuel and having outlet and inlet ends. The conduit adapted to convey preheated fuel is substantially parallel to the conduit adapted to convey preheated oxidant. The conduit adapted to convey preheated oxidant is positioned substantially vertically above the conduit adapted to convey preheated fuel. The conduit adapted to convey preheated oxidant and the conduit adapted to convey preheated fuel each are positioned within its own respective elongate cavity in a refractory burner block. Each of the conduits are positioned in their respective cavity such that a substantially annular region is present between an outer surface of each conduit and its respective cavity. Each conduit inlet end extends through a respective plenum for receiving an ambient temperature fluid, the plenums adapted to pass the ambient temperature fluid into the respective annular regions.
    Type: Grant
    Filed: January 3, 2003
    Date of Patent: August 31, 2004
    Assignees: L'Air Liquide, American Air Liquide, Inc.
    Inventors: Mahendra L. Joshi, Arnaud Fossen, Harley A. Borders, Remi P. Tsiava, Olivier Charon
  • Publication number: 20040123861
    Abstract: A boiler includes an outlet and with multi-positioning piping. The outlet is located on an angle on the boiler formed by angling the edge formed by the top side and back side of the boiler. One end of the piping is cut on an angle such that the piping may be connected to the boiler via the outlet to extend either vertically or horizontally from the boiler.
    Type: Application
    Filed: December 31, 2002
    Publication date: July 1, 2004
    Inventor: Kenneth Moskwa
  • Patent number: 6416317
    Abstract: The oxy-fuel burner comprises at least one fuel supply pipe (16) and at least one pipe (18) for supplying an oxygen-rich gas, the said outlets of the pipes being directed approximately in the same direction, the burner being designed to be mounted through a wall of a furnace with the pipes directed into the furnace. It carries at least one auxiliary member (50, 60) intended to act on the flame and the said auxiliary member (50, 60) is placed on the burner upstream of the zone where the fuel gas and the oxygen-rich gas meet.
    Type: Grant
    Filed: November 19, 1998
    Date of Patent: July 9, 2002
    Assignee: L'Air Liquide Societe Anonyme A Directoire et Conseil de Surveillance Pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Stéphane Arnoux, Dominique Robillard
  • Patent number: 6382959
    Abstract: A burner includes a motor driven blower, an air tube having an inlet end portion and an outlet end portion, a housing forming an air flow path between the blower and the air tube, a nozzle for spraying liquid fuel or orifice for dispersing gas toward the outlet end portion of the air tube and a conduit for feeding the fuel to the nozzle or orifice. An air flow control device and method enable air flow and pressure to be regulated at locations near the nozzle and between the blower and the nozzle. A contour of a throttle member of the burner is designed so as to achieve a prescribed pressure in a region between the throttle member and head of the burner over the range of the burner.
    Type: Grant
    Filed: December 30, 2000
    Date of Patent: May 7, 2002
    Assignee: R. W. Beckett Corporation
    Inventors: Victor J. Turk, John M. Laisy, Len Fisher
  • Publication number: 20010036608
    Abstract: A burner includes a motor driven blower, an air tube having an inlet end portion and an outlet end portion, a housing forming an air flow path between the blower and the air tube, a nozzle for spraying liquid fuel or orifice for dispersing gas toward the outlet end portion of the air tube and a conduit for feeding the fuel to the nozzle or orifice. An air flow control device and method enable air flow and pressure to be regulated at locations near the nozzle and between the blower and the nozzle. A contour of a throttle member of the burner is designed so as to achieve a prescribed pressure in a region between the throttle member and head of the burner over the range of the burner.
    Type: Application
    Filed: December 30, 2000
    Publication date: November 1, 2001
    Inventors: Victor J. Turk, John M. Laisy, Len Fisher
  • Patent number: 6244855
    Abstract: A burner includes a motor driven blower, an air tube having an inlet end portion and an outlet end portion, a housing forming an air flow path between the blower and the air tube, a nozzle for spraying liquid fuel or orifice for dispersing gas toward the outlet end portion of the air tube and a conduit for feeding the fuel to the nozzle or orifice. An air flow control device and method enable air flow and pressure to be regulated at locations near the nozzle and between the blower and the nozzle.
    Type: Grant
    Filed: August 11, 1999
    Date of Patent: June 12, 2001
    Assignee: R. W. Beckett Corporation
    Inventors: Victor J. Turk, John M. Laisy, Len Fisher
  • Patent number: 6220852
    Abstract: A method and apparatus for adjusting the flame exit velocity of a high velocity burner. The burner includes burner combustor chamber having a fluid accelerating nozzle and a burner combustor exhaust port. Fuel is delivered to the burner combustor through a fuel inlet. An ignitor is provided to initiate combustion of the fuel which is mixed with air from an air inlet. An adjusting device is provided to vary the flame exit area of the burner. The adjusting device includes an adjusting rod connected to an extension rod which preferably extends through the burner ignition chamber to the burner combustion exit port. For example, a tapered plug is attached to the end of the extension rod. The tapered plug is tapered in a direction decreasing toward the burner combustion exit port and can include fins attached around a periphery of the plug.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: April 24, 2001
    Assignee: Hauck Manufacturing Company
    Inventor: Edward E. Moore
  • Patent number: 6171100
    Abstract: Burner firing method and device are presented where an oxidizing oxygen-fuel burner is fired at an angle to the reducing air-fuel burner flame to reduce overall NOx emissions from high temperature furnaces. The oxidizing oxy-fuel burner stoichiometric equivalence ratio (oxygen/fuel) is maintained in the range of about 1.5 to about 12.5. The reducing air-fuel burner is fired at an equivalence ratio of 0.6 to 1.00 to reduce the availability of oxygen in the flame and reducing NOx emissions. The oxidizing flame from the oxy-fuel burner is oriented such that the oxidizing flame gas stream intersects the reducing air-fuel flame gas stream at or near the tail section of the air-fuel flame. The inventive methods improve furnace temperature control and thermal efficiency by eliminating some nitrogen and provide an effective burnout of CO and other hydrocarbons using the higher mixing ability of the oxidizing flame combustion products.
    Type: Grant
    Filed: September 20, 1999
    Date of Patent: January 9, 2001
    Assignees: American Air Liquide, Inc., L'Air Liquide Societe Anonyme pour l'Elude et l'Exploitation des Procedes George Claude
    Inventors: Mahendra L. Joshi, Benjamin J. Jurcik, Jr., Jean-Francois Simon
  • Patent number: 6162049
    Abstract: A ported, premixed extendable burner provides increased turndown capability relative to conventional burners. The burner has an adjustable flameholder sleeve which can be extended and retracted relative to a flameholder, to increase and decrease the available flameholder area. The burner is suitable for use in modulated heating applications and other applications where high turndown ratios are desired.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: December 19, 2000
    Assignee: Gas Research Institute
    Inventors: Roberto O. Pellizzari, Johannes H. J. Thijssen, Scott Macadam
  • Patent number: 6116893
    Abstract: A burner assembly (10) comprising an elongate housing (12) supplied with a gas-air mixture and an elongate burner port body (28) slidably disposed in an elongate aperture (26) in the housing. The position of the burner port body (26) with respect to the housing is adjustable, resulting in a more accurate adjustment of the assembly, since the position of the housing (12) can remain fixed.
    Type: Grant
    Filed: June 1, 1999
    Date of Patent: September 12, 2000
    Assignee: The Aerogen Company Limited
    Inventor: Alan Peach
  • Patent number: 6089858
    Abstract: Device for protecting an ejection outlet of a burner mounted through a wall of a furnace, comprising a peripheral heat shield around the ejection outlet of the burner comprising a consumable structure comprising a refractory material and a mounting for heat shield comprising a mover which moves the heat shield relative to the wall of the furnace, between at least two positions which are spaced apart along the axis of the burner.
    Type: Grant
    Filed: June 8, 1999
    Date of Patent: July 18, 2000
    Assignee: L'air Liquide, Societe Anonyme pour l'Etude de l'Exploitation des Procedes Georges Claude
    Inventors: Benoit Loiselet, Philippe Beaudoin
  • Patent number: 6089170
    Abstract: A low NOx gas combustor includes an air injection mechanism to create a combustion air path. A set of arc-shaped gas injector arrays are formed in an annular configuration. Each arc-shaped gas injector array injects an arc-shaped stream of gas that intersects with the combustion air path to produce a fuel rich flame segment that is separated from an adjacent fuel rich flame segment from an adjacent arc-shaped gas injector array by an air rich zone. The interaction between the fuel rich flame segment and the air rich zone results in low NOx combustion of the gas.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: July 18, 2000
    Assignee: Electric Power Research Institute, Inc.
    Inventors: Anthony V. Conti, Anthony Facchiano, Dan V. Giovanni, James Lucente, Michael W. McElroy
  • Patent number: 5988157
    Abstract: A furnace having improved heat exchanger, which is particularly suitable for use in a positive pressure, direct-vented hot air furnace. The heat exchanger has a split housing construction allowing the heat exchanger to be partible into halves. Parting the heat exchanger housing of the present invention permits access to the ceramic combustion chamber disposed therein, facilitating periodic repair and replacement. The partible portions of the present heat exchanger housing are connectable using one of several available connection means, including bolted mating flanges, encircling clamps, and twisting quick-locking means. The connection between the partible portions is gasketed to provide a positive pressure seal of the connection, impeding leakage of pressurized combustion gases from within the heat exchanger to the occupied air.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: November 23, 1999
    Assignee: 1036684 Ontario Inc. c.o.b. as Clare Brothers
    Inventors: Michael N. Brown, Gaetan Roy, Dan C. Dobre
  • Patent number: 5984666
    Abstract: A device for mounting burners inside a duct for gas and comprising at least one fuel injection pipe having a nose disposed in the head of said burner on an axis parallel to the axis of the duct. The injection pipe is situated inside a sheath secured to the burner head for feeding it with air from outside the duct and disposed transversely relative to the axis of the duct, and the nose of the injection pipe, situated at the end of a bent portion of the pipe, is movable along the axis relative to a guide orifice secured to the burner head, from which it is suitable for being disengaged by the injection pipe being moved inside the sheath from outside the duct, thereby making it possible, from outside the duct, to extract the injection pipe completely to the outside of the duct.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: November 16, 1999
    Assignee: Entreprise Generale de Chauffage Industrial Pillard
    Inventors: Jean Claude Pillard, Jacques Pizant
  • Patent number: 5961317
    Abstract: A combustion head assembly comprising a mounting plate having a plurality of apertures and adapted for mounting to a boiler, and a plurality of combustion heads removably mounted in each of the apertures. The combustion heads each have a fuel nozzle and ignition tips. There is at least one fuel source removably connected to the fuel nozzles of each of the combustion heads and at least one ignition source removably connected to the ignition tips of each of the combustion heads. There is at least one source of forced air removably connected to said combustion heads, and a controller adapted to operate each combustion head independently of the other combustion heads. Each combustion head can be removed from the assembly for repair and inspection without interrupting the operation of the other combustion heads and the boiler.
    Type: Grant
    Filed: May 19, 1998
    Date of Patent: October 5, 1999
    Inventor: Joseph Fauci
  • Patent number: 5961316
    Abstract: An oil burner includes a pivotal cover that exposes a unitary gun assembly. The gun assembly is movable longitudinally with respect to the central axis of the air tube of the burner by rotating a cam. A spinner assembly is positioned on the gun assembly. The air cone is divided into various surfaces, some of which are at angles to the axis of the air tube. The burner further includes an adjustable air entry port. A work station for facilitating nozzle replacement is also included. The firing rate is controlled by the air entry port setting, the nozzle used, and the position of the nozzle and spinner assembly in the air cone.
    Type: Grant
    Filed: October 25, 1995
    Date of Patent: October 5, 1999
    Assignee: Weil-McLain
    Inventors: James E. Wellman, Edward W. Johann, Eric Warry, Donald C. Metrish
  • Patent number: 5944507
    Abstract: A liquid fuel burner is provided with a central fuel outlet having a generally divergent conical inner surface, formed of two contiguous divergent conical surfaces of different angles of divergence, and a plurality of oxygen outlets shaped and positioned for creating a converging, rotating stream of oxygen which intersects with any liquid fuel issuing from the fuel outlet. Such oxygen/fuel interaction results in two zones of combustion and a recirculation effect which assists in the complete or substantially complete combustion of undesirable exhaust gas components. The oxygen and fuel are preferably supplied such that their velocities are approximately equal at the point at which the two zones of combustion meet.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: August 31, 1999
    Assignee: The BOC Group plc
    Inventor: Christian J. Feldermann
  • Patent number: 5878676
    Abstract: A burner is provided for a furnace having at least one windbox that is supplied with air for combustion and has extending therethrough at least one such burner, which opens out toward the combustion chamber. The burner has at least one primary air channel, which is supplied from the outside with a coal dust/air mixture, at least one secondary air channel, which surrounds the primary air channel, and at least one tertiary air channel, which surrounds the secondary air channel. The secondary and tertiary air channels can be supplied with air from the windbox in a regulated manner. Along a rotationally symmetrical portion of an outer surface of each of the secondary and tertiary air channels there is respectively provided at least one air inlet opening. Respective annular valve sections are rotatably disposed about one of the rotationally symmetrical portions of the secondary and tertiary air channels.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: March 9, 1999
    Assignee: L. & C. Steinmuller GmbH
    Inventors: Matthias Jochem, Hans-Ulrich Thierbach
  • Patent number: 5833451
    Abstract: A premix burner (1) essentially comprises at least two sectional cone bodies (12, 13) which are nested one inside the other in the direction of flow and the respective cone axes of which are offset relative to a center axis (10). Tangential slots (16) are thereby formed for the combustion air (9). Starting from the tip of the sectional cone bodies (12, 13), a feed lance (1) is arranged which extends downstream into the interior of the premix burner (11) and runs essentially symmetrically to the center axis (10). At least one fuel nozzle (8) is arranged at the downstream end of the feed lance (1).
    Type: Grant
    Filed: November 6, 1996
    Date of Patent: November 10, 1998
    Assignee: Asea Brown Boveri AG
    Inventor: Robin McMillan
  • Patent number: 5725367
    Abstract: A method and apparatus for injecting fuel and oxidant into a combustion burner. At a fuel exit plane of a fuel discharge nozzle, fuel is discharged in a generally planar fuel layer which has an upper boundary and a lower boundary. At an oxidant exit plane, oxidant is preferably discharged in both a top layer along the upper boundary of the fuel layer and a bottom layer along the lower boundary of the fuel layer. In a downstream flow direction, the fuel and oxidant preferably converge in a generally vertical plane and diverge in a generally horizontal plane. The discharged fuel and oxidant form a fishtail or fan-shaped flame configuration. The fuel exit plane can be moved upstream or downstream with respect to the oxidant exit plane to vary the flame characteristics and the flame shape. A refractory manifold can be used to further enhance the fishtail or fan-shaped flame configuration.
    Type: Grant
    Filed: December 28, 1995
    Date of Patent: March 10, 1998
    Assignee: Combustion Tec, Inc.
    Inventors: Mahendra L. Joshi, Lee Broadway, Patrick J. Mohr
  • Patent number: 5697306
    Abstract: A burner for the combustion of a pulverized coal plus primary air mixture includes a nozzle pipe having an inlet for receiving a pulverized coal plus primary air mixture and an outlet for discharging same. A hollow plug extends axially within the nozzle pipe and defines an annular space between the plug and the nozzle pipe for conveying the pulverized coal plus primary air mixture therethrough. The hollow plug is axially moveable within the nozzle pipe. A variable amount of core air is supplied into the hollow plug so that it mixes with the primary air plus pulverized coal mixture at an outlet of the burner to vary the PA/PC ratio and maintain a desired primary air to primary coal ratio at the outlet of the burner. Natural gas can also be supplied into the hollow plug as a supplemental fuel for cofiring at the outlet end of the burner.
    Type: Grant
    Filed: January 28, 1997
    Date of Patent: December 16, 1997
    Assignee: The Babcock & Wilcox Company
    Inventors: Albert D. LaRue, Hamid Sarv
  • Patent number: 5630713
    Abstract: Rotary burner suitable for installation on a sidewall (11) of a furnace and for cooperating with the inside of the furnace, which comprises at least one sidewall (11) equipped with cooled panels (18), the rotary burner (10) including at least one supporting and fixture assembly (12) solidly associated with the sidewall (11) of the furnace and at least one positioning and orientation assembly (13) rotatably fitted on the axis of the supporting and fixture assembly (12), the positioning and orientation assembly (13) containing a through hole (22) in which a body (14) of the burner (10) is removably secured in a retracted position, the through hole (22) having its axis (34) downwardly inclined towards the inside of the furnace by an angle ".beta." between 10.degree. and 60.degree. in relation to the axis (33) of rotation of the positioning and orientation assembly (13), the positioning and orientation assembly (13) being able to be rotated by at least an arc of a circumference up to .+-.180.degree.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 20, 1997
    Assignees: Danieli & C. Officine Meccaniche SpA, Process Technology International Inc.
    Inventors: Val Shver, Gianni Gensini
  • Patent number: 5513981
    Abstract: A burner for an industrial furnace has a plurality of lines passing through a furnace wall for fuel gas, burner air, and waste gas. Arranged in the furnace space is a combustion chamber (66) in which a mixture of fuel gas and burner air is combusted, and from which a flame (89) is directed into the furnace space. The combustion chamber (66) is delimited by walls (32, 65). The walls (32, 65) are arranged to be movable with respect to one another (65', 65"), so that the volume of the combustion chamber (66) is adjustable (FIG. 2).
    Type: Grant
    Filed: March 29, 1994
    Date of Patent: May 7, 1996
    Assignee: Aichelin GmbH
    Inventors: Wolfgang Harbeck, Theo Woerner, Karl Weiss, Rudolf Distl
  • Patent number: 5292244
    Abstract: A premixed fuel/air burner with velocity and fuel/air ratio control having a nozzle with a nozzle wall forming a Venturi mixer and a nozzle exit, means for separately introducing fuel and air into the Venturi mixer, a hollow body disposed in the nozzle and moveable in a longitudinal direction toward the nozzle exit, the hollow body having at least one orifice through a wall thereof at an angle with respect to a longitudinal axis of the nozzle such that fuel is injected through said orifice into the Venturi mixer. Movement of the hollow body toward the nozzle exit changes the cross-sectional area of the Venturi mixer and nozzle exit thereby permitting control of nozzle velocity of the resulting fuel/air mixture. To control the fuel/air ratio, a fixed orifice baffle is provided inside the hollow body which changes the opening of the orifice as the hollow body is moved toward the nozzle exit.
    Type: Grant
    Filed: June 23, 1993
    Date of Patent: March 8, 1994
    Assignee: Institute of Gas Technology
    Inventor: Tian-yu Xiong
  • Patent number: 5259755
    Abstract: A burning method promotes rapid mixing and a stable flame in a burner to reduce NO.sub.x and CO emissions and to provide a smoother, quieter operation. The burner includes a primary fuel supply, a combustion air supply arranged to supply combustion air at low pressure, and a swirler for swirling the combustion air. When the primary fuel supply is gaseous fuel, the gaseous fuel is introduced radially into the swirling combustion air. A bluff body cone is arranged near the exit of the burner so as to be encountered by at least the swirling combustion air. An atomizer is arranged within the bluff body cone for atomizing liquid fuel when the primary fuel supply is a liquid fuel. Boost gas nozzles are arranged toroidily at the exit of the burner to supply and mix swirling boost gas for combustion with the combustion air when the gaseous fuel is the primary fuel supply, and mixer tabs are disposed around the periphery of the exit.
    Type: Grant
    Filed: July 31, 1992
    Date of Patent: November 9, 1993
    Assignee: Hauck Manufacturing Company
    Inventors: Bruce C. Irwin, Edward E. Moore, Raymond F. Baum
  • Patent number: 5257927
    Abstract: A low NO.sub.x burner combustion system which may be adjusted for optimum burn rates, temperature and oxygen levels. The burner incorporates a plurality of gas nozzles which individually inspirate a portion of the combustion air and a spin vane diffuser to rotate and mix the gases within the primary combustion zone. The diffuser is axially adjustable in order to vary the distance between the vane and the first combustion zone while the blades of the diffuser can be angularly adjusted to optimize the rotation and mix of the gases. Air for combustion is supplied through primary, secondary and tertiary passages to create distinct combustion zones for complete combustion. The flow rate of the combustion air is controlled through a damper in accordance with the burn characteristics. The angular and axial position of the diffuser and the damper control of combustion air can be automatically adjusted throughout the firing range of the burner in response to demand levels.
    Type: Grant
    Filed: November 1, 1991
    Date of Patent: November 2, 1993
    Assignee: Holman Boiler Works, Inc.
    Inventor: Jerry M. Lang
  • Patent number: 5240409
    Abstract: A premixed fuel/air burner with velocity and fuel/air ratio control having a nozzle with a nozzle wall forming a Venturi mixer and a nozzle exit, means for separately introducing fuel and air into the Venturi mixer, a hollow body disposed in the nozzle and moveable in a longitudinal direction toward the nozzle exit, the hollow body having at least on orifice through a wall thereof at an angle with respect to a longitudinal axis of the nozzle such that fuel is injected through said orifice into the Venturi mixer. Movement of the hollow body toward the nozzle exit changes the cross-sectional area of the Venturi mixer and nozzle exit thereby permitting control of nozzle velocity of the resulting fuel/air mixture. To control the fuel/air ratio, a fixed orifice baffle is provided inside the hollow body which changes the opening of the orifice as the hollow body is moved toward the nozzle exit.
    Type: Grant
    Filed: April 10, 1992
    Date of Patent: August 31, 1993
    Assignee: Institute of Gas Technology
    Inventor: Tian-yu Xiong
  • Patent number: 5235813
    Abstract: A mixing device is comprised of a pair of nested flow separator conduits (202, 204) with convolutions (201, 206) on the outlet ends (203, 205) and means of adjusting the relative position of the convolutions on one of the outlet ends relative to the convolutions on the other outlet end. The relative movement of the convolutions (201, 206) provides a method to modulate the rate of mixing between flows passing through the flow separator conduits (202, 204). Exemplary embodiments of the invention include application of the mixing device as a furnace (20) and as a gas turbine combustor (150).
    Type: Grant
    Filed: December 24, 1990
    Date of Patent: August 17, 1993
    Assignee: United Technologies Corporation
    Inventors: John B. McVey, Jan B. Kennedy
  • Patent number: 5217363
    Abstract: An air-cooled oxygen-gas burner for use with a direct fired furnace. The burner comprises a body formed from three concentric metal tubes supported in a cylindrical housing secured about a conical bore in a refractory side wall of a furnace. The three concentric tubes have a cone shaped inner end which are adjustable to define a nozzle with annular openings therebetween of variable size to vary the shape of a flame produced by a mixture of combustible gas, oxygen and air fed under pressure, respectively, in each of two chambers defined between the three concentric metal tubes and a chamber defined between the tubes and the cylinder housing. The combustible gas is fed in the inner chamber, the oxygen in the intermediate chamber, while the air is fed in the outer chamber to cool the concentric tube assembly and the furnace refractory about the burner nozzle.
    Type: Grant
    Filed: June 3, 1992
    Date of Patent: June 8, 1993
    Assignee: Gaz Metropolitan & Co., Ltd. and Partnership
    Inventors: Normand Brais, Jean-Guy Chouinard
  • Patent number: 5209893
    Abstract: An improved premix-type burner for a gas-fired metal processing furnace includes a burner insert externally adjustable over a stepless continuum. The burner insert includes a helical thread disposed on its outer diameter which cooperatively engages with a helical thread disposed on an inner diameter of the burner body bore. Rotation of an adjustment tube, which extends into the burner body and is affixed to the burner insert concentrically disposed therein, causes axial translation of the burner insert, thereby regulating fuel flow to the combustion chamber and controlling the combustion process.
    Type: Grant
    Filed: November 18, 1991
    Date of Patent: May 11, 1993
    Assignee: Southwire Company
    Inventors: Kerim Askin, John D. Butler
  • Patent number: 5199355
    Abstract: A burner for the combustion of a fuel plus air mixture comprises a central nozzle pipe having an inner surface with a portion which diverges outwardly. An axially moveable plug is positioned within the nozzle pipe and includes an outer wall with a diverging section extending within the diverging section of the nozzle pipe. By axially moving the plug, the cross sectional area of the space between the diverging surfaces increases and decreases for respectively decreasing and increasing the velocity of the fuel plus air mixture passing through the nozzle space. This reduces the formation of NO.sub.x and the length of the flame produced by the burner.
    Type: Grant
    Filed: August 23, 1991
    Date of Patent: April 6, 1993
    Assignee: The Babcock & Wilcox Company
    Inventor: Albert D. Larue