Burning Waste Gas, E.g., Furnace Gas, Etc. Patents (Class 431/5)
  • Patent number: 10690341
    Abstract: The present disclosure generally relates to systems and methods for the combustive abatement of waste gas formed during the manufacture of semiconductor wafers. In particular, the systems described herein are capable of combusting air-polluting perfluorocarbons, including those having high greenhouse gas indexes such as hexafluoroethane (C2F6) and tetrafluoromethane (CF4), as well as particulate-forming silicon dioxide precursors, such as silane (SiH4) and tetraethoxysilane (Si(OC2H5)4, abbreviated TEOS), with greater efficiency and lower energy usage than prior abatement systems.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: June 23, 2020
    Assignee: ALZETA CORPORATION
    Inventors: Michael J. Silberstein, David Frederick Bartz
  • Patent number: 10502417
    Abstract: The present invention provides an exhaust gas treatment method and an exhaust gas treatment device which prevent the generation of NOX, and treat a first exhaust gas and a second exhaust gas with a small amount of fuel, and the exhaust gas treatment method comprises a first combustion step which treats a first exhaust gas discharged from a carbonization furnace for carbonizing a fibrous substance in an inert atmosphere and a graphitization furnace for graphitizing a fibrous substance in an inert atmosphere and a second combustion step of treating a second exhaust gas discharged from a flameproofing furnace for flameproofing a fibrous substance in air atmosphere, wherein the first exhaust gas is combusted at an oxygen ratio of 0.8 or less in the first combustion step, and the second exhaust gas is combusted in the second combustion step using sensible heat and latent heat of a third exhaust gas discharged in the first combustion step.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: December 10, 2019
    Assignee: TAIYO NIPPON SANSO CORPORATION
    Inventors: Yasuyuki Yamamoto, Kimio Iino, Yoshiyuki Hagihara
  • Patent number: 9726374
    Abstract: Described herein are embodiments of systems and methods for oxidizing gases. In some embodiments, a reaction chamber is configured to receive a fuel gas and maintain the gas at a temperature within the reaction chamber that is above an autoignition temperature of the gas. The reaction chamber may also be configured to maintain a reaction temperature within the reaction chamber below a flameout temperature. In some embodiments, heat and product gases from the oxidation process can be used, for example, to drive a turbine, reciprocating engine, and injected back into the reaction chamber.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: August 8, 2017
    Assignee: ENER-CORE POWER, INC.
    Inventors: Boris A. Maslov, Jeffrey Armstrong
  • Patent number: 9464804
    Abstract: The gas flare system includes a vertical flare stack having an opened top end and a bottom floor wall. A weatherproof protective hood arrangement prevents rain and snow from entering through the opened top end. The gas flare system also includes a burner arrangement provided through the bottom floor wall. The burner arrangement receives a waste gas stream from a waste gas circuit and also primary air. Secondary air orifices around the burner supply secondary air coming from a plenum housing located directly underneath the bottom floor wall. The gas flare system can destroy the flammable gas in the waste gas stream with a combustion efficiency of more than 99% under almost any operating conditions. It can start automatically and operate efficiently without any supervision under any possible atmospheric conditions. A method of destroying a flammable gas in a waste gas stream is also disclosed.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: October 11, 2016
    Assignee: RTJ TECHNOLOGIES INC.
    Inventors: Charles Tremblay, Alain Roy, Simon Jasmin
  • Patent number: 9239190
    Abstract: A furnace system includes at least one lower radiant section having a first firebox disposed therein and at least one upper radiant section disposed above the at least one lower radiant section. The at least one upper radiant section has a second firebox disposed therein. The furnace system further includes at least one convection section disposed above the at least one upper radiant section and an exhaust corridor defined by the first firebox, the second firebox, and the at least one convection section. Arrangement of the at least one upper radiant section above the at least one lower radiant section reduces an area required for construction of the furnace system.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: January 19, 2016
    Assignee: Foster Wheeler USA Corporation
    Inventors: Ronald T. Myszka, Bruce T. Young
  • Patent number: 9192891
    Abstract: Methods for control of NOx emission in the incineration of tail gas are provided wherein tail gas that comprises NOx, NOx precursors, or both is introduced into a combustor and diluent is introduced into the combustor for controlling the combustor temperature to a temperature of from about 950° C. to about 1100° C. Methods also are provided for reducing NOx emissions by controlling air-to-fuel ratio in a tail gas combustor while controlling the combustor flame temperature through diluent injections. A boiler unit for carrying out these methods also is provided. A system for carbon black production using the boiler unit also is provided.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: November 24, 2015
    Assignee: CABOT CORPORATION
    Inventors: William R. Williams, Daxiang Wang, Theis F. Clarke
  • Patent number: 9089811
    Abstract: A treatment module for use in an abatement system for process exhaust gases. The treatment module has a centrally located flame wall oxidizer module that cause the process exhaust gases to travel within a cylinder of gas a short distance upon exiting the exhaust conduit before the gases are oxidized. Following oxidation, two coaxial cylinders of water spray flush solid, liquid and water soluble components of the oxidation products from the resulting oxidation products stream into a bottom water reservoir. The first inner water spray cylinder coaxially surrounds the flame wall oxidizer module and flows co-currently with the downward flow of oxidation products. The gaseous oxidation products then turn 180 degrees and pass upward through a second outer water spray cylinder located coaxial to and surrounding the first water spray. Thereafter, the remaining water insoluble gaseous oxidation products exit the treatment module.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: July 28, 2015
    Assignee: Highvac Corp.
    Inventor: Earl Vickery
  • Patent number: 9004910
    Abstract: Method for combustion of a fuel uses an existing air burner (1), including a first supply opening (5) for fuel and a second supply opening (7) for air, which supply openings (5,7) open out into a combustion zone (3). The method is characterised in that a gaseous fuel with an LHV (Lower Heating Value) of less than 7.5 MJ/Nm3 is supplied through the second supply opening (7), in that an oxidant including at least 85 percent by weight oxygen is also supplied to the combustion zone (3) through a supply device for oxidant, and in that the gaseous fuel is caused to be combusted with the oxidant in the combustion zone (3).
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: April 14, 2015
    Assignee: Linde AG
    Inventors: Tomas Ekman, Anders Lugnet, Ola Ritzén
  • Publication number: 20150099231
    Abstract: According to one aspect, an apparatus includes a separator vessel adapted to separate solid and liquid materials from gas materials; a flame arrestor in fluid communication with the separator vessel and through which the gas materials are adapted to flow; and a flare stack adapted to burn off the gas materials. The flare stack includes a vent pipe and an igniter. In another aspect, a system at a wellsite includes one or more separators adapted to be in fluid communication with a wellbore; one or more vent gas lines in fluid communication with the one or more separators; and an integrated vent gas separator and flare stack. In an exemplary embodiment, the one or more separators comprise at least one of a mud-gas separator and a shale-gas separator. In yet another aspect, a kit has first and second configurations. In still yet another aspect, a method is provided.
    Type: Application
    Filed: October 3, 2014
    Publication date: April 9, 2015
    Inventors: Timothy Long, Matthew B. Green, John Mathena
  • Patent number: 8967995
    Abstract: A dual-pressure flare system and a method of its use. The dual-pressure flare system includes a dual-pressure flare stack having a central axis that is aligned with the center of a high-pressure outlet; a high-pressure flue having a central axis that is co-linear with the central axis of the dual-pressure flare stack; and a low-pressure flue connected to a low-pressure tip. Some exemplary embodiments of the system further include an air-assist assembly having an air-supply connection connected to an air blower and a mixing chamber, wherein the mixing chamber surrounds the low-pressure tip. In some exemplary embodiments, the air-supply connection is disposed outside the dual-pressure flare stack and the high-pressure flue.
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: March 3, 2015
    Inventors: Danny Edward Griffin, Andrew Avila, Jr.
  • Publication number: 20150050603
    Abstract: A dual-pressure flare system and a method of its use. The dual-pressure flare system includes a dual-pressure flare stack having a central axis that is aligned with the center of a high-pressure outlet; a high-pressure flue having a central axis that is co-linear with the central axis of the dual-pressure flare stack; and a low-pressure flue connected to a low-pressure tip. Some exemplary embodiments of the system further include an air-assist assembly having an air-supply connection connected to an air blower and a mixing chamber, wherein the mixing chamber surrounds the low-pressure tip. In some exemplary embodiments, the air-supply connection is disposed outside the dual-pressure flare stack and the high-pressure flue.
    Type: Application
    Filed: August 14, 2013
    Publication date: February 19, 2015
    Inventors: Danny Edward Griffin, Andrew Avila, JR.
  • Publication number: 20150050604
    Abstract: A dual-pressure flare system and a method of its use. The dual-pressure flare system includes a dual-pressure flare stack having a central axis that is aligned with the center of a high-pressure outlet; a high-pressure flue having a central axis that is co-linear with the central axis of the dual-pressure flare stack; and a low-pressure flue connected to a low-pressure tip. Some exemplary embodiments of the system further include an air-assist assembly having an air-supply connection connected to an air blower and a mixing chamber, wherein the mixing chamber surrounds the low-pressure tip. In some exemplary embodiments, the air-supply connection is disposed outside the dual-pressure flare stack and the high-pressure flue.
    Type: Application
    Filed: October 7, 2013
    Publication date: February 19, 2015
    Inventors: Danny Edward Griffin, Andrew Avila, JR.
  • Patent number: 8899975
    Abstract: A combustor having wake air injection is provided. The combustor includes a fuel nozzle, first and second vessels formed and disposed to define a flow path along which a first fluid flows in first and second opposite directions toward the fuel nozzle, a vane disposed in the flow path and an injector to inject a second fluid into wake formed by an obstruction disposed in the flow path upstream from the vane.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: December 2, 2014
    Assignee: General Electric Company
    Inventors: Abdul Rafey Khan, Bradley Donald Crawley, Rajendra Paniharam, Nishant Govindbhai Parsania
  • Publication number: 20140329186
    Abstract: An apparatus and method for minimizing smoke formation in the operation of a flaring stack. The apparatus includes a generally annular gas deflector having an outer surface for deflecting the waste gas therealong. A plurality of lobes extend radially from the deflector to provide improved mixing between the waste gas and combustion air during combustion to reduce smoke formation.
    Type: Application
    Filed: May 1, 2014
    Publication date: November 6, 2014
    Applicant: UOP LLC
    Inventors: Donnie Dee McClain, Richard R. Martin, Jay D. Jennings
  • Publication number: 20140329185
    Abstract: An apparatus and method for minimizing smoke formation in the operation of a flaring stack. The apparatus includes a generally annular gas deflector having an outer surface for deflecting the waste gas therealong. A plurality of lobes extend radially from the deflector to provide improved mixing between the waste gas, steam, and combustion air during combustion to reduce smoke formation.
    Type: Application
    Filed: May 1, 2014
    Publication date: November 6, 2014
    Applicant: UOP LLC
    Inventors: Donnie Dee McClain, Richard R. Martin, Jay D. Jennings
  • Publication number: 20140322657
    Abstract: A thermal afterburning system and a method for operating such a system are described, in which method or system a burner gas is fed in a conventional manner to a burner heating the combustion space of a combustion chamber, and exhaust air with a pollutant load is fed to the combustion space of the combustion chamber. The clean air produced inside the combustion space during the combustion processes is discharged. At the same time the carbon monoxide content of said air is measured. The supply of burner gas to the burner is regulated in such a manner that a predetermined target value for the carbon monoxide content is maintained. In this manner, the temperature in the combustion space is kept only sufficiently high as is required to achieve the desired purity of the clean gas given the respective pollutant load of the exhaust air.
    Type: Application
    Filed: September 6, 2012
    Publication date: October 30, 2014
    Applicant: EISENMANN AG
    Inventor: Apostolos Katefidis
  • Patent number: 8849171
    Abstract: In a device or method to fix print images on a recording material, a printing fluid comprising a carrier fluid and chromophoric solid particles are applied to the recording material, the chromophoric solid particles being applied in a form of the print images to be fixed. Hot waste gas and infrared radiation are generated with aid of a porous burner. The infrared radiation is directed towards the recording material in a drying chamber such that the carrier fluid polymerizes or is vaporized, whereby a gaseous air/oil mixture arises in the drying chamber. The air/oil mixture is influenced with aid of the hot waste gas of the porous burner.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: September 30, 2014
    Assignee: Océ Printing Systems GmbH
    Inventors: Revdin Dedic, Stefan Roehl
  • Publication number: 20140272729
    Abstract: The present device is a fluid bed regenerative thermal oxidizer configured to minimize dead spaces within it and eliminate the need for complex valve systems, which are typically required to move treated and untreated air across fixed beds. The present device can be a fluid bed regenerative thermal oxidizer comprising a vertical stack having a combustion chamber near its interior center and desorber shelves located within the vertical stack above the combustion chamber and adsorber shelves located within the vertical stack below the combustion shelves. Ceramic spheres can be used as heat sinks that flow from the desorber shelves, around the combustion chamber and onto the adsorber shelves and then back to the desorber shelves. In this way heat from the combustion can be captured by the heat exchange material on the desorber shelves and released to preheat untreated air on the adsorber shelves.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: James L. Nester, Rick Reimlinger
  • Patent number: 8833052
    Abstract: Systems and methods for controlling fuel mixing are provided. One or more parameters associated with the operation of a machine configured to receive a combined fuel may be identified. A fuel flow of the combined fuel that is provided to the machine may be determined. Based at least in part on the identified parameters, a ratio of a first fuel type included in the combined fuel to the determined fuel flow may be determined. The first fuel type may have a heating value that is greater than a second fuel type included in the combined fuel. A flow of the first fuel type may be set based at least in part on the ratio. Subsequent to setting the flow of the first fuel type, an energy content of the fuel flow of the combined fuel may be determined, and the flow of the first fuel type may be adjusted based at least in part on the determined energy content.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: September 16, 2014
    Assignee: General Electric Company
    Inventor: Robert J. Loeven, II
  • Patent number: 8795616
    Abstract: A system and method of using a double-effect-reactor to dispose incinerated flue gas and improve cement yields. The double-effect-reactor features an incinerated reaction chamber and a gas-solid suspension mixing chamber. The system includes the double-effect-reactor, a high temperature dust-arrester, a system for recovery of thermal energy and dust removal, a triple valve, and an independent chimney. Also disclosed is a method in which combines the double-effect-reactor with a cement production system.
    Type: Grant
    Filed: December 26, 2011
    Date of Patent: August 5, 2014
    Assignee: Satarem Technologies Limited
    Inventor: Ching Chiu Leung
  • Publication number: 20140208998
    Abstract: The invention relates to a process for advantageously efficiently treating a sulfureous combustible effluent stream by recovering the sulfur in elemental form. This process consists especially of the succession of two steps: a step of combustion of the sulfureous combustible effluent stream with an oxidant gas in excess, a step of post-combustion of the effluents from the combustion step with an acidic gas. The stream of the post-combustion effluents, free of chemical compounds that are harmful to the efficacy of the Claus catalysts, is treated in a Claus unit which performs the recovery of the sulfur in elemental form.
    Type: Application
    Filed: August 22, 2012
    Publication date: July 31, 2014
    Applicant: TOTAL SA
    Inventors: Jean Nougayrede, Soufene Maktouf
  • Publication number: 20140199639
    Abstract: There is provided a process for growing a phototrophic biomass in a reaction zone, wherein the reaction zone includes a reaction mixture that is operative for effecting photosynthesis upon exposure to photosynthetically active light radiation, wherein the reaction mixture includes phototrophic biomass that is operative for growth within the reaction zone. The process includes supplying at least a fraction of gaseous exhaust material, being discharged from an industrial process, to the reaction zone, exposing the reaction mixture to photosynthetically active light radiation and effecting growth of the phototrophic biomass in the reaction zone, wherein the effected growth includes growth effected by photosynthesis, and modulating distribution of a molar rate of supply of carbon dioxide, being exhausted from the reaction zone, as between a smokestack and at least another point of discharge.
    Type: Application
    Filed: March 14, 2013
    Publication date: July 17, 2014
    Applicant: Pond Biofuels Inc.
    Inventors: Jaime A. Gonzalez, Steven C. Martin, Max Kolesnik
  • Patent number: 8753108
    Abstract: A method and apparatus for treatment of unburnts in a flue stream 9 of a chemical looping combustion system. Unburnts present in the flue stream 9 are treated after CO2 is removed from the flue stream in a gas processing unit 13. As shown in FIG. 2, oxidation of the unburnts occurs primarily in an air reactor 2 in the presence of air 1, allowing the system to maintain CO2 capture effectiveness and removing the need for creation of enriched or pure oxygen 11.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: June 17, 2014
    Assignee: ALSTOM Technology Ltd
    Inventors: Marc Ajhar, Jörgen Grubbström
  • Publication number: 20140147795
    Abstract: The gas flare system includes a vertical flare stack having an opened top end and a bottom floor wall. A weatherproof protective hood arrangement prevents rain and snow from entering through the opened top end. The gas flare system also includes a burner arrangement provided through the bottom floor wall. The burner arrangement receives a waste gas stream from a waste gas circuit and also primary air. Secondary air orifices around the burner supply secondary air coming from a plenum housing located directly underneath the bottom floor wall. The gas flare system can destroy the flammable gas in the waste gas stream with a combustion efficiency of more than 99% under almost any operating conditions. It can start automatically and operate efficiently without any supervision under any possible atmospheric conditions. A method of destroying a flammable gas in a waste gas stream is also disclosed.
    Type: Application
    Filed: November 19, 2013
    Publication date: May 29, 2014
    Applicant: RTJ TECHNOLOGIES INC.
    Inventors: Charles TREMBLAY, Alain ROY, Simon JASMIN
  • Patent number: 8714968
    Abstract: An oxygen fueled integrated pollutant removal and combustion system includes a combustion system and an integrated pollutant removal system. The combustion system includes a furnace having at least one burner that is configured to substantially prevent the introduction of air. An oxygen supply supplies oxygen at a predetermine purity greater than 21 percent and a carbon based fuel supply supplies a carbon based fuel. Oxygen and fuel are fed into the furnace in controlled proportion to each other and combustion is controlled to produce a flame temperature in excess The integrated. pollutant removal system includes at least one direct contact heat exchanger for bringing the flue gas into intimated contact with a cooling liquid to produce a pollutant-laden liquid stream and a stripped flue gas stream and at least one compressor for receiving and compressing the stripped flue gas stream.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: May 6, 2014
    Assignee: Jupiter Oxygen Corporation
    Inventors: Brian R. Patrick, Thomas L. Ochs, Cathy A. Summers, Danylo B. Oryshchyn, Paul C. Turner
  • Patent number: 8703064
    Abstract: An apparatus and method is presented for reducing mono nitrogen oxide emissions in a hydrocarbon processing furnace. A preferred embodiment hydrocarbon cracking furnace includes a firebox with a set of wall burners and a set of floor burners, the floor burners comprising secondary burner tips burning a fuel-rich mixture and positioned below primary burner tips burning a fuel-lean mixture. A portion of flue gases are recirculated from the primary burner combustion area to the secondary burner combustion area and back to the primary burner combustion area. The floor burners further comprise a set of steam injection ports that inject steam into a conical flow to contact flames at the primary burner tips, reducing flame temperature and thereby reducing thermal NOx. The steam injection ports are positioned in the firebox above the primary burner tips.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: April 22, 2014
    Assignee: WPT LLC
    Inventor: David C. Payne
  • Publication number: 20140106282
    Abstract: The disclosure relates to a waste gas purification method, and more particularly, to a waste gas burning method of reducing CO and NOx by burning waste gases using a system for individually controlling CO and NOx. In accordance with the disclosure, there is provided a low-pollution burning method using a system for individually controlling CO and NOx including a waste gas introduction and flame injection step; a first waste gas burning step; and a second waste gas burning step.
    Type: Application
    Filed: November 28, 2012
    Publication date: April 17, 2014
    Applicant: GLOBAL STANDARD TECHNOLOGY CO., LTD
    Inventors: Jong Chul KIM, Jong Kook CHUNG, Sung Wook LEE, Wan Gi ROH, Sun Ho KIM, Suk-Ho KANG
  • Patent number: 8690976
    Abstract: A fuel reformer is provided that is capable of improving endurance and performance. The fuel reformer includes a first burner having a first-burner first end, a first-burner second end, and a first opening formed in the first-burner first end; a second burner surrounding the first burner and having a second-burner second end, a second-burner second end, and a second opening in the second-burner first end, wherein the second-burner second end is coupled to the first-burner second end to communicate a fluid. The reforming reactor is configured to generate heat from the first and second burners, and has a fuel supply including a nozzle unit in the first burner and supplies a second oxidation fuel from the outside to the first burner. A first oxidation fuel is introduced into the first opening and flows through the first burner in a first direction and flows through the second burner in a third direction opposite to the first direction.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: April 8, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventor: In-Hyuk Son
  • Publication number: 20140080071
    Abstract: A gas treatment plant (3) for treating an industrial waste gas comprising carbon dioxide comprises an oxyfuel boiler (100) and a pipe (109; 122; 180) arranged for forwarding the industrial waste gas to the oxyfuel boiler (100) and injecting the industrial waste gas into the oxyfuel boiler (100) to participate in the combustion process occurring in the boiler (100) to cause oxidation of at least a portion of the content of at least one oxidizable substance of the industrial waste gas. The gas treatment plant (3) further comprises a gas cleaning system (108), and a pipe (126) for forwarding a carbon dioxide rich flue gas generated in the boiler (100) to the gas cleaning system (108) for being cleaned therein, such that an at least partly cleaned carbon dioxide rich flue gas is formed.
    Type: Application
    Filed: September 20, 2012
    Publication date: March 20, 2014
    Applicant: ALSTOM TECHNOLOGY LTD
    Inventors: Ulrich Koss, Glen D. Jukkola
  • Patent number: 8662883
    Abstract: Apparatus is described for combusting exhaust gases output from a plurality of process chambers. The apparatus comprises a plurality of exhaust gas combustion nozzles (22) connected to a combustion chamber (24). Each nozzle receives a respective exhaust gas (26), and comprises means for receiving a fuel (40) and an oxidant (30) for use in forming a combustion flame within the chamber. A controller receives data indicative of the chemistry of the exhaust gas supplied to each nozzle, and adjusts the relative amounts of fuel and oxidant supplied to each nozzle in response to the received data. This can enable the nature of each combustion flame to be selectively modified according to the nature of the exhaust gases to be destroyed by that flame, thereby enhancing the destruction rate efficiency of the exhaust gas and optimising fuel consumption.
    Type: Grant
    Filed: May 3, 2006
    Date of Patent: March 4, 2014
    Assignee: Edwards Limited
    Inventors: Darren Mennie, Nicholas Benjamin Jones, Colin Michael Harrison
  • Patent number: 8656708
    Abstract: A burner for an exhaust gas treatment system treats an exhaust flow from an engine and includes an inner housing defining a primary combustion zone and a secondary combustion zone. The inner housing includes a plurality of apertures upstream of the secondary combustion zone for receipt of a first portion of the exhaust flow. An outer housing surrounds the inner housing to define a bypass flow path between the inner and outer housings to bypass a second portion of the exhaust flow around the inner housing outside of the primary and secondary combustion zones. The outer housing includes an exhaust inlet coaxially aligned with an exhaust outlet along a central longitudinal axis. A mixing zone is provided downstream of the second combustion chamber in receipt of the first and second portions of the exhaust flow.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: February 25, 2014
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: Nicholas Morley, Lawrence Dalimonte, Jagandeep Sandhu
  • Patent number: 8647111
    Abstract: A method of combusting ammonia is described, in which an exhaust gas containing varying amounts of at least ammonia and hydrogen is conveyed from a chamber to a combustion nozzle (34) connected to a combustion chamber (36). A combustion gas for forming a combustion flame within the chamber is supplied to the chamber. Depending on the relative amounts of ammonia and hydrogen exhaust from the chamber, hydrogen is added to the exhaust gas so that, when the exhaust gas contains ammonia, the gas combusted by the flame contains at least a predetermined amount of hydrogen.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: February 11, 2014
    Assignee: Edwards Limited
    Inventors: Darren Mennie, Nicholas Benjamin Jones
  • Patent number: 8641411
    Abstract: A method of operating an emission abatement assembly includes separating the exhaust gas flow entering through the gas inlet port of the fuel-fired burner into a combustion flow which is advanced through the combustion chamber, and a bypass flow which bypasses the combustion chamber. An emission abatement assembly is also disclosed.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: February 4, 2014
    Assignee: Faureua Emissions Control Technologies, USA, LLC
    Inventors: Wilbur H. Crawley, Randall J. Johnson, Yougen Kong, John B. Abel, Shoja Farr, Nicholas Birkby, David Pearson
  • Publication number: 20140020399
    Abstract: The invention relates to a method and an apparatus for generating current from hydrogen sulphide-containing exhaust gases, particularly from the natural gas industry. The method according to the invention is characterized in that the hydrogen sulphide-containing exhaust gases are delivered to a current generation device and are burnt there, preferably with air being supplied, the energy released during combustion being employed at least partially for current generation. The apparatus according to the invention is characterized by a current generation device in which supplied hydrogen sulphide-containing exhaust gases are burnt, preferably with air being supplied, the energy released during combustion being employed at least partially for current generation.
    Type: Application
    Filed: January 11, 2012
    Publication date: January 23, 2014
    Applicant: KNAUF GIPS KG
    Inventor: Rolf Hueller
  • Patent number: 8632741
    Abstract: A system and method according to which exhaust is directed from a stationary exhaust source and through a burner, and a combustible fluid is vented from at least one combustible fluid source other than the stationary exhaust source. The combustible fluid is captured and directed to flow from the combustible fluid source and towards the burner, and at least air is mixed with the captured combustible fluid to form a mixture. The mixture is introduced into the burner and burned therein to thereby pre-heat the exhaust flowing therethrough. The pre-heated exhaust contacts a catalyst.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: January 21, 2014
    Assignee: Dresser-Rand Company
    Inventors: Jon K. Tice, Loran Novacek
  • Patent number: 8629313
    Abstract: A method of operating a flare assembly is provided. If it is determined that the injection of primary steam into the combustion zone is necessary to achieve smokeless operation, primary steam is injected through a steam injector assembly into the combustion zone. If it is determined that steam is not necessary, an alternative gas is discharged though the steam injector assembly into the combustion zone. In one embodiment, the alternative gas is heated. In another embodiment, if it is determined that steam is necessary, a maximum allowable flow rate of steam is calculated, and the flow rate of steam is modulated to achieve smokeless operation and avoid a flow rate of steam in excess of the maximum allowable flow rate of steam. A flare assembly is also provided.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: January 14, 2014
    Assignee: John Zink Company, LLC
    Inventors: Jianhui Hong, James Charles Franklin, Dennis Lee Knott, Zachary Lewis Kodesh, Scott Joseph Fox
  • Patent number: 8623286
    Abstract: A system for collecting carbon dioxide in flue gas includes a stack that discharges flue gas discharged from an industrial facility to outside, a blower that is installed at the downstream side of the stack and draws the flue gas therein, a carbon-dioxide collecting device that collects carbon dioxide in the flue gas drawn in by the blower, and a gas flow sensor arranged near an exit side within the stack. A drawing amount of the flue gas by the blower to the carbon-dioxide collecting device is increased until an flow rate of the flue gas from the stack becomes zero in the gas flow sensor, and when the discharged amount of flue gas from the stack becomes zero, drawing in any more than that amount is stopped, and the carbon dioxide in the flue gas is collected while the flue gas is drawn in by a substantially constant amount.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: January 7, 2014
    Assignees: Mitsubishi Heavy Industries, Ltd., The Kansai Electric Power Co., Inc.
    Inventors: Masaki Iijima, Takashi Kamijo, Yasuyuki Yagi, Kouki Ogura
  • Publication number: 20130309616
    Abstract: An apparatus and method are provided for a gas distribution system that allows for the rapid displacement of an extraneous gas in the distribution system by a primary gas. The gas distribution system utilizes a gas accumulator to aid in the rapid displacement of the extraneous gas. In one embodiment a flare pilot system uses the inventive distribution system to allow for the rapid purge of air from the flare pilot system by a fuel.
    Type: Application
    Filed: May 15, 2012
    Publication date: November 21, 2013
    Applicant: John Zink Company, LLC
    Inventors: Zachary L. Kodesh, Thomas M. Korb, Roger L. Poe
  • Publication number: 20130295509
    Abstract: The invention relates to a method for thermally after-burning the waste gas flows developing during the production of acrolein in a gas phase process and for thermally after-burning the waste gas flows developing during the production of hydrocyanic acid in a gas phase process, characterized in that the waste gas flows from the production of acrolein and the waste gas flows from the production of hydrocyanic acid are supplied to a joint thermal after-burning process.
    Type: Application
    Filed: December 19, 2011
    Publication date: November 7, 2013
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Caspar Heinrich Finkeldei, Pablo Zacchi, Martin Körfer
  • Patent number: 8568134
    Abstract: A gas burner apparatus for discharging a mixture of fuel gas, air and flue gas into a furnace space of a furnace is provided. The burner tile includes at least one gas circulation port extending though the wall of the tile. The interior surface of the wall of the tile includes a Coanda surface. Fuel gas and/or flue gas conducted through the gas circulation port follows the path of the Coanda surface which allows more flue gas to be introduced into the stream. The exterior surface of the wall of the tile also includes a Coanda surface for facilitating the creation of a staged combustion zone. Also provided are improved burner tiles, improved gas tips and methods of burning a mixture of air, fuel gas and flue gas in a furnace space.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: October 29, 2013
    Assignee: John Zink Company, LLC
    Inventors: Roger L. Poe, James Wilkins, Michael G. Claxton
  • Publication number: 20130244187
    Abstract: A high efficiency low NOx emission thermal oxidizer burner apparatus. The apparatus includes a plenum chamber having an inlet for introduction of combustion air and includes a combustion chamber in fluid communication with the plenum chamber. A primary waste gas pipe terminates in a lobed tip nozzle through the plenum chamber for introduction of waste gas into the combustion chamber. A primary fuel gas line is in communication with the plenum chamber for introduction of primary fuel gas.
    Type: Application
    Filed: March 19, 2012
    Publication date: September 19, 2013
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Kurt Kraus, Matthew Martin, Stefano Bietto
  • Patent number: 8506676
    Abstract: A waste heat recovery system is provided. The waste heat recovery system includes a gas separation apparatus that includes a chamber and at least one membrane positioned within the chamber. The gas separation apparatus is configured to produce a retentate that includes at least a combustible gas and a permeate that includes at least a waste gas, wherein the waste gas includes at least a noncombustible gas. Moreover, the waste heat recovery system includes a burner that is coupled to the gas separation apparatus, wherein the burner is configured to receive the permeate and to combust the permeate such that heat is generated from the permeate. Further, a heat recovery steam generator is coupled to the burner and configured to recover heat generated by the burner.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: August 13, 2013
    Assignee: General Electric Company
    Inventor: Robert Warren Taylor
  • Patent number: 8459984
    Abstract: A waste heat recovery system is coupled to a flare or exhaust stack of, for example, a landfill gas treatment system, to recover at least a portion of the energy within the exhaust produced by the gas treatment system and provides the recovered energy either indirectly or directly to a secondary process, such as a wastewater treatment process, to thereby reduce the amount of energy needed to be otherwise input into the secondary process. For indirect transfer of energy the waste heat recovery system includes a transfer pipe connected between the exhaust stack of a primary process and a heat exchange unit while an induction fan connected to the transfer pipe operates to create a draft within the transfer pipe to facilitate movement of some of the exhaust gas from the exhaust stack of the primary process to the heat exchange unit.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: June 11, 2013
    Assignee: Heartland Technology Partners LLC
    Inventors: Bernard F. Duesel, Jr., David L. Fenton, Michael J. Rutsch
  • Publication number: 20130115560
    Abstract: Fuel-fired furnace and a method for operating it, in which method: a main oxidizing agent is injected at a controlled flow rate into the combustion chamber of the furnace; the combustible material is burnt in the combustion chamber with the main oxidizing agent, producing thermal energy and flue gases at a temperature higher than 600° C.; the flue gases are removed via an exhaust duct, said removed flue gases possibly containing residual materials that could be oxidized, the exhaust duct being equipped with an inlet for a diluting oxidizing agent downstream of the combustion chamber; the residual materials that could be oxidized are burnt with the diluting oxidizing agent by means of a flame at the inlet for the diluting oxidizing agent; the flame intensity inside the exhaust duct is detected; and the flow rate at which the main oxidizing agent is injected into the combustion chamber is controlled according to the detected flame intensity.
    Type: Application
    Filed: March 30, 2011
    Publication date: May 9, 2013
    Applicant: L'Air Liquide Societe Anonyme Pour L'Etude ET L'Exploitation Des Proceded Georges Claude
    Inventors: Philippe Beaudoin, Benoit Loiselet
  • Patent number: 8425223
    Abstract: An apparatus, a system and a method by which fuel gas to drive a heat source is heated are provided. The apparatus includes a first gas passage by which at least a portion of the fuel gas is transported from an inlet to an outlet, the outlet being fluidly coupled to the heat source, a plurality of heat pipes in thermal communication, at respective first ends thereof, with the portion of the fuel gas transported by the first gas passage, and a heating element, fluidly coupled to the heat source to receive exhaust of the heat source, through which respective second ends of the heat pipes extend to be in position to be heated by the exhaust.
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: April 23, 2013
    Assignee: General Electric Company
    Inventors: Hua Zhang, Jatila Ranasinghe, Dean Matthew Erickson
  • Publication number: 20130089822
    Abstract: The invention refers to the method for the utilization of low-concentration mixtures of a combustible gas and air with the stable recovery of heat and the flow-reversal device for the embodiment of the method.
    Type: Application
    Filed: December 8, 2011
    Publication date: April 11, 2013
    Applicants: KATALIZATOR Sp. z.o.o., INSTYTUT INZYNIERII CHEMICZNEJ POLSKIEJ AKADEMII NAUK
    Inventors: Krzysztof Gosiewski, Manfred Jaschik, Anna Pawlaczyk, Krzysztof Warmuzinski, Marek Tanczyk, Krzysztof Gielzak, Artur Wojdyla, Tadeusz Machej, Leszek Michalski
  • Patent number: 8414289
    Abstract: A whirlwind-type oxidation combustion apparatus for processing semiconductor fabrication exhaust gas is disclosed. An inlet head is set on the top of an exhaust gas processing tank. An exhaust gas passage is set inside the inlet head and connected to an external exhaust gas supply terminal and the exhaust gas processing tank, for guiding the exhaust gas into the exhaust gas processing tank. An ignition chamber is formed between two partitions outside the exhaust gas passage. The two partitions have multiple inclined holes interconnecting an external combustion gas supply terminal, the ignition chamber, and the exhaust gas processing tank. The inclined holes guide a combustion gas to swirl into the exhaust gas processing tank through the ignition chamber. An igniter in the ignition chamber ignites the combustion gas to form a vortex flame which burns the exhaust gas. The exhaust gas is further caused to swirl onto a water screen.
    Type: Grant
    Filed: March 5, 2011
    Date of Patent: April 9, 2013
    Assignee: Orient Service Co., Ltd.
    Inventor: Wu Liang Feng
  • Patent number: 8382469
    Abstract: Apparatus and method for collecting fugitive combustible gases and adding the gases as a supplementary fuel source to an engine. The fugitive combustible gases are added to the air inletted to the air supply and a control is provided to allow adjustment of the normal fuel supplied to the engine following the addition of the fugitive combustible gases. The fugitive combustible gases provide an energy source for the engine and the combustion of the gases reduces the greenhouse effect if the gases contain methane.
    Type: Grant
    Filed: March 9, 2005
    Date of Patent: February 26, 2013
    Assignee: Rem Technology, Inc.
    Inventor: Howard Leigh Malm
  • Patent number: 8356992
    Abstract: An oxyfiring system and method for capturing carbon dioxide in a combustion process is disclosed. The oxyfiring system comprises (a) an oxidation reactor for oxidizing a reduced metal oxide; (b) a decomposition reactor wherein a decomposition fuel is combusted and oxidized metal oxide sorbents are reduced with oxygen being released and a flue gas with an oxygen enriched carbon dioxide stream is produced; (c) a fuel combustion reactor for combusting a primary fuel and the oxygen enriched carbon dioxide stream into a primary flue gas; and (d) separation apparatus for separating a portion of the primary flue gas so that a carbon dioxide enriched stream can be prepared. The method comprises providing a primary fuel and an oxygen enriched carbon dioxide stream to a fuel combustion reactor. The primary fuel and oxygen enriched carbon dioxide stream are combusted into a primary flue gas stream which is split into a first flue gas portion and a second flue gas portion.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: January 22, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventor: Raja A Jadhav
  • Patent number: 8317510
    Abstract: The disclosure provides methods and systems for recovering thermal energy from heated exhaust gases. The methods and systems have particular use in conjunction with combustion source effluent/exhaust streams. The methods of energy recovery increase life expectancy of various equipment, while reducing operating and maintenance costs for economic recovery of enthalpy from heated process streams. In certain aspects, the methods of recovering thermal energy include providing a heated low pressure effluent stream. A high velocity stream is injected into an entrainment zone to form a high velocity jet which entrains the heated effluent stream. The momentum of the system is conserved and a mixed stream is pressurized and recirculated to a burning zone of a combustion source. The methods also reduce pollutant emissions.
    Type: Grant
    Filed: July 12, 2007
    Date of Patent: November 27, 2012
    Assignee: The Regents Of The University of Michigan
    Inventor: Arvind Atreya