Annular Arrangement With Fuel Directed On Surrounding Combustion Chamber Wall Patents (Class 431/177)
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Patent number: 4887961Abstract: A radiant wall burner which is designed to be mounted on a wall of a radiant-type furnace such as an ethylene decomposing surface has a fuel supply tube defining a fuel supply passage for a fuel which may be a gaseous fuel and provided with a fuel outlet nozzle, and an air supply tube combined with the fuel supply tube so as to provide a double-tube structure such that one of the fuel supply tube and the air supply tube constitutes an inner tube while the other constitutes an outer tube, the air supply tube defining an air supply passage for combustion air separate from the fuel supply passage and having an air outlet which opens towards the core region of the radiant-type furnace. The burner apparatus further has a plate disposed so as to oppose the air outlet of the air supply tube thereby to deflect the flow of combustion air form the air outlet in the radial directions.Type: GrantFiled: March 14, 1988Date of Patent: December 19, 1989Assignee: Kabushiki Kaisha Kuwabara SeisakushoInventors: Kenichi Kuwabara, Makoto Miyata
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Patent number: 4859173Abstract: In its simplest sense, the burner of the present invention includes a swirl chamber for creating a swirling flow path for primary combustion air. The burner also includes means communicating with the swirl chamber for introducing low heating value gas to the primary combustion air for discharge with the air into a flame zone. Also provided are means adjacent to each other for introducing secondary air and for introducing secondary low heating value gas positioned so that the secondary air and secondary low heating value gas intersect the flame zone, preferably above the region of the recirculating core of the flame and at such a point that the secondary air and low heating value gas have a minimal effect on the swirl aerodynamics of the flame.Type: GrantFiled: September 28, 1987Date of Patent: August 22, 1989Assignee: Exxon Research and Engineering CompanyInventors: Lester W. Davis, Jr., John P. Geosits, Dennis L. Juedes, Edward F. Kiczek
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Patent number: 4650416Abstract: A combustor using D.sub.2 /NF.sub.3 /He is used in a laser gain generator in a cylindrical gas laser. The combustor includes a plurality of primary rings having fuel, oxidizer and diluent orifices therein. Fuel and oxidizer orifices form a triplet injector set that provides a reactant set. Two diluent orifices form a diluent injector set that provides a diluent set. These sets alternate about each primary ring and from one primary ring to the adjacent primary ring. Because the diluent set does not mix directly with the reactant set initially, a greater percentage of lasing products are formed because of the higher temperature in the reacting zone. Diluent is mixed as required at a later stage in the flow.Type: GrantFiled: November 8, 1985Date of Patent: March 17, 1987Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Walter R. Warren, Jr., Norman Cohen
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Patent number: 4618323Abstract: A method and burner tip for suppressing the production of oxides of nitrogen when burning a fuel in a combustion chamber containing a flame zone are described. The burner tip comprises at least one port for introducing fuel into the combustion zone and at least one port for introducing a control gas into the combustion zone, where both the fuel and control gas are introduced substantially perpendicular to the direction of introduction of combustion gas into the combustion zone. The ports are laterally spaced apart from each other. The control gas is used for controlled localized quenching of the flame zone and/or for controlled atomization of the fuel in the case of the liquid fuel to reduce the emissions of nitrogen oxides (NOx). By proper selection of the size and location of the fuel and control gas ports, and the quantity and velocity of the fuel and control gas introduced into the combustion zone, a stable flame with minimal emission of oxides of nitrogen can be obtained.Type: GrantFiled: August 6, 1984Date of Patent: October 21, 1986Assignee: Southers California EdisonInventor: Mansour N. Mansour
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Patent number: 4492562Abstract: A burner distributor tip for projecting a fuel-oxygen mixture from a premix-type gaseous fuel burning system to a refractory furnace surface is disclosed.Type: GrantFiled: April 27, 1983Date of Patent: January 8, 1985Assignee: Standard Oil Company (Indiana)Inventor: Frederick A. Michel
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Patent number: 4453914Abstract: A low heat loss combustion chamber for a gain generator assembly is shown. The gain generator assembly operates in a cylindrical gas laser. The combustion chamber includes a plurality of primary rings having fuel and oxidizer injectors therein as well as primary nozzles. End caps attached to the primary rings contain reaction products so that they flow through the primary nozzles on the primary rings past a secondary injector array into a lasing cavity of the gas laser.Type: GrantFiled: December 15, 1982Date of Patent: June 12, 1984Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Sam Huniu, William C. Bailey
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Patent number: 4437831Abstract: A gas burner head for bushing out or spreading a gas flame adapted for use in an oil burning firebox which comprises in combination with a gas delivery tube and an air power, forced air, surrounding, air delivery duct, a pair of closely adjacent plates spaced at right angles to the cylinder-axis of the nozzle of the gas delivery tube. The nozzle abutts the outer or spreading one of the plates and is circumferentially perforate on its upper sides in the space between the plates to deliver gas therebetween. The air delivery duct has an air discharge opening surrounding the outer edges of the plates which is of an area greater than that of said nozzle and spreading plate but providing relatively narrow circumscribing air passage therebetween. The areas of said plates are predominately circular with the outer spreading plate of smaller diameter than the inner nozzle plate.Type: GrantFiled: October 27, 1980Date of Patent: March 20, 1984Assignee: Aero Environmental LimitedInventors: Michael F. C. Brooker, Steven J. McKerihen, Hashmukrai D. Attwala, Antonio L. Cautillo
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Patent number: 4412808Abstract: The present invention resides in a dual fueled burner gun providing reduced production of oxides of nitrogen. The gun operates in a gaseous fueled mode when it is charged with a gaseous fuel or in a liquid fueled mode when it is charged with a liquid fuel. The gun may also operate in a gaseous/liquid fueled mode in which it is charged with both the gaseous and liquid fuels.Type: GrantFiled: June 19, 1980Date of Patent: November 1, 1983Assignee: TRW Inc.Inventors: Douglas B. Sheppard, James A. Kezerle, Ellis W. Sheffield
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Patent number: 4402666Abstract: A forced draft, radiant wall, fuel burner, comprises a burner constructed with a central circular pipe for the conduction of pressurized combustion air, a second larger diameter pipe coaxial with the air pipe, with pressurized gas supplied to the closed annular space between the two pipes. The inner pipe extends forwardly beyond the end of the outer pipe. Fuel orifices are drilled in the forward end of the annular space, so that the gas flow will be parallel to the axis of the pipes. A second series of gas orifices are drilled through the outer wall of the second tube so that the gas glow is radial along the front of the burner tile. A plurality of air orifices are drilled radially in the forward end of the air pipe, so that the air flow is radial and directed perpendicularly against the principal longitudinal gas flow. The air tube spreads conically outwardly at its forward end.Type: GrantFiled: December 9, 1980Date of Patent: September 6, 1983Assignee: John Zink CompanyInventors: Horst M. Glomm, Klaus E. Sawatzki, Dieter Fischer
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Patent number: 4351251Abstract: A combustion apparatus which has a burner having an inner wall lined with a refractory material forming a combustion chamber and an outer wall spaced from the inner wall by spacing members. A primary air supply supplies air to the burner combustion chamber through the outer and inner walls. A pulverizer for pulverizing solid fuel is connected to the primary air supply for feeding the pulverized solid fuel to the burner combustion chamber. A secondary air supply supplies air to the burner between the inner and outer walls and into the burner combustion chamber. The secondary air supply supplies air to an area of negative pressure in the combustion chamber created by the swirling flow of air from the primary and secondary air supply. An ignition pilot is mounted through the burner inner and outer walls adjacent to the primary air and fuel feed. The ignition pilot has a pilot flame detector which looks at the pilot and the main combustion flame.Type: GrantFiled: June 29, 1981Date of Patent: September 28, 1982Assignee: Mechtron International Corp.Inventor: David F. Brashears
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Patent number: 4303386Abstract: A burner which has a central liquid fuel atomizing nozzle is disclosed. An inner member defines a steam chamber and is surrounded by a shell that defines a liquid fuel compartment. A conduit extends from the steam chamber forming a steam core flow. A first passage feeds liquid fuel about the steam core flow to form an annular liquid fuel stream thereabout. A second passage forms an outer steam flow which envelops the annular liquid fuel flow. The burner further includes ducts to form a first combustion airflow co-axially about the nozzle, a second combustion airflow which surrounds the first flow, and a third combustion airflow which envelops the second flow and generally protects the furnace wall from coming into contact with the flame generated by the burner.Type: GrantFiled: May 18, 1979Date of Patent: December 1, 1981Assignee: Coen Company, Inc.Inventors: Temple S. Voorheis, Ralph R. Vosper, Chester S. Binasik, Norman Harthun
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Patent number: 4273527Abstract: A multiple fuel burning system that may be employed in conjunction with a furnace includes a first annular tubular conduit connected to a source of pressurized fluid and a second annular conduit concentric with the first annular tubular conduit and coupled to a source of pressurized fuel. A third annular tubular conduit is also included that is concentric with the first and second tubular conduits but of a lesser diameter so as to be within the first and second annular tubular conduits. The third annular tubular conduit is connected to a source of heat retaining liquid such as water or the like. The first, second and third tubular conduits define an elongated combustion chamber with three nozzles mounted at one end. Two of the three nozzles are connected to a source of combustible fuel such as fuel oil. The third nozzle may be connected to a source of pulverized combustible fuel.Type: GrantFiled: September 4, 1979Date of Patent: June 16, 1981Inventor: Cyril F. Meenan
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Patent number: 4257762Abstract: A multi-fuel gas burner using preheated forced draft air, comprising a cylindrical inner burner tube, supported by the wall of a furnace, and inserted into an opening in said wall, and including means to inject through the upstream end combustion air preheated to a selected temperature, and compressed to a selected pressure. The downstream end of the inner burner tube closed, and a plurality of longitudinal slots, circumferentially spaced, in the wall of the tube at the closed end. Means to inject rich fuel gas up to 3,500 btu/cu feet under selected pressure into the inner burner tube along its axis. An outer burner tube axially surrounding said inner burner tube and forming an annular passage therebetween. Means to pass low pressure, lean, combustible gas of as low as 50 btu/cu feet down said annular passage and outwardly through a circumferential slot at the end of said outer burner tube inside the furnace.Type: GrantFiled: September 5, 1978Date of Patent: March 24, 1981Assignee: John Zink CompanyInventors: John S. Zink, Robert D. Reed, Horst M. Glomm, Klaus E. Sawatski
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Patent number: 4098075Abstract: An annular pilot combustor for a turbine type power plant includes radial inflow air and fuel nozzles judiciously oriented to improve heat load characteristics, eliminate a diffuser passage and shorten the overall combustor and supporting parts.Type: GrantFiled: June 1, 1976Date of Patent: July 4, 1978Assignee: United Technologies CorporationInventors: Paul B. Greenberg, Robert P. Lohmann, Philip M. Wing
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Patent number: 4083674Abstract: A film-evaporating combustion chamber with an evaporator pipe whose inner wall surfaces are wetted with a fuel film from a fuel supply installation, and in which the evaporating fuel is seized by a swirling combustion air flow sweeping along the inner diameter of the evaporator pipe so as to mix the film with the combustion air; the fuel supply installation is thereby equipped with at least one feedline which extends from the inside toward the inner wall of the evaporator pipe and whose discharge opening is located substantially in front of the inner wall.Type: GrantFiled: March 15, 1976Date of Patent: April 11, 1978Assignee: Daimler-Benz AktiengesellschaftInventor: Immanuel Holzapfel
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Patent number: 4054409Abstract: The swirling burner comprises a vertical combustion chamber and an annular blast member located beneath the combustion chamber and provided with a central cylindrical space and a plurality of alternately superposed fuel gas passages and air passages. These passages are communicated with the cylindrical space through blow openings which are inclined in the same direction with respect to the radii of the cylindrical space. In a modification, the burner is further combined with straight blowing type burner for promoting the effect of the air-gas mixing.Type: GrantFiled: May 12, 1976Date of Patent: October 18, 1977Assignee: Nippon Kokan Kabushiki KaishaInventors: Ryo Ando, Kazuo Sano, Takao Miyazaki
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Patent number: 3989444Abstract: A gas gun for producing a hydrogen and carbon monoxide rich reduction gas by partially combusting a gaseous fuel. The tip of the gas gun is provided with at least two groups of radially-directed gas discharge nozzles, the nozzles of one group having a larger diameter than those of the other group.Type: GrantFiled: December 9, 1974Date of Patent: November 2, 1976Assignee: Shell Oil CompanyInventor: Gernot Staudinger
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Patent number: 3961475Abstract: A combustion chamber for a gas turbine engine which has staged combustion in two toroidal vortices of opposite hand arranged one upstream of the other. A burner delivers air/fuel mixture in a radial direction to support the vortices and the burner has a convergent outlet for the air/fuel mixture.Type: GrantFiled: March 31, 1975Date of Patent: June 8, 1976Assignee: Rolls-Royce (1971) LimitedInventor: Robert David Wood