Decarbonizing, Cleaning Or Purging Patents (Class 431/3)
  • Patent number: 9284888
    Abstract: A system for supplying fuel to a combustor includes a combustion chamber, a liner that circumferentially surrounds at least a portion of the combustion chamber, and a flow sleeve that circumferentially surrounds at least a portion of the liner. A tube provides fluid communication for a working fluid to flow through the flow sleeve and the liner and into the combustion chamber, and the tube includes a tube wall. A plurality of fuel ports through the tube wall provide fluid communication for fuel to flow through the tube wall and into the tube, and the fuel ports are non-circular.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: March 15, 2016
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Bryan Wesley Romig, Lucas John Stoia
  • Patent number: 9027332
    Abstract: An exhaust treatment system may include a burner, a flame sensor assembly and a control module. The flame sensor assembly may be at least partially disposed within the burner and may include an insulator and an electric heating element in heat transfer relation with the insulator. The control module may be in communication with the flame sensor assembly. The control module may determine whether a flame is present in a combustion chamber based on feedback from the flame sensor assembly. The control module may detect contamination on the insulator based on feedback from the flame sensor assembly. The control module may operate the heating element in a first mode in response to detection of a contamination in which the control module causes electrical power to be applied to the heating element to raise a temperature of the heating element to burn contamination off of the insulator.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: May 12, 2015
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventor: Keith G. Olivier
  • Patent number: 8974225
    Abstract: A combustion process wherein a comburent, a fuel and the following components are fed: i) component B) sulphur or compounds containing sulphur in an amount to have a molar ration B1/C1?0.
    Type: Grant
    Filed: November 27, 2008
    Date of Patent: March 10, 2015
    Assignee: ITEA S.p.A.
    Inventors: Massimo Malavasi, Grazia Di Salvia, Edoardo Rossetti
  • Patent number: 8973567
    Abstract: A carbon fuel combustion process, employing an air gas separation unit, a combustion unit operating either with air or with an oxidizer leaner in nitrogen than air, coming from the air gas separation unit, and a unit for compressing and/or purifying the CO2 coming from the combustion flue gas, wherein the power consumed by the air gas separation unit and/or the flow of oxygen produced by the air gas separation unit and/or the capture of the CO2 coming from the combustion flue gas are variable over time is presented.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: March 10, 2015
    Assignee: L'Air Liquide, Societe Anonyme pour l 'Etude et l 'Exploitation des Procedes Georges Claude
    Inventors: Philippe Court, Arthur Darde, Jean-Pierre Tranier, Patrick Le Bot, Jean-Marc Tsevery
  • Publication number: 20140287367
    Abstract: A system for operating a combustor includes a sensor that measures an operating parameter associated with the combustor and generates a signal reflective of the operating parameter. The operating parameter is reflective of an ash deposition rate or an accumulated ash buildup. A controller receives the signal, compares the signal to a predetermined limit, and generates a control signal. A method for operating a combustor includes operating the combustor at a first power level that produces a first temperature that is less than or equal to a first predetermined temperature and creating a layer of ash. The method further includes measuring an operating parameter reflective of an ash deposition rate or an accumulated ash buildup, comparing the operating parameter to a limit, and operating the combustor at a second power level that produces a second temperature that is greater than or equal to the first predetermined temperature.
    Type: Application
    Filed: June 6, 2014
    Publication date: September 25, 2014
    Inventors: Robert Thomas Thatcher, Gilbert Otto Kraemer, Andrew Mitchell Rodwell, Matthew M. Scheid
  • Patent number: 8783007
    Abstract: The present application provides a liquid fuel system for use with a flow of a liquid fuel and a combustor of a gas turbine engine. The liquid fuel system may include a number of fuel lines in communication with the combustor, a purge air inlet positioned about each of the fuel lines, a number of drain lines with each drain line in communication with a respective fuel line, and a number of drain valves with each drain valve in communication with a respective drain line so as to drain the flow of liquid fuel in the fuel lines via a flow of purge air through the purge air inlet and opening the drain valves.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: July 22, 2014
    Assignee: General Electric Company
    Inventors: Julio Enrique Mestroni, Douglas Byrd, Charles Steber, Rahul J. Chillar, Robert R. Reed
  • 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
  • Patent number: 8678813
    Abstract: A stream of exhaust gases from the combustion of hydrocarbon-containing fuels with a variable temperature can be produced by dividing the exhaust gases into two separate part-streams, cooling one part-stream and then combining the two part-streams again. The temperature of the exhaust-gas stream which has been combined again can be set to between the temperature of the combustion of the hydrocarbon-containing fuels and the temperature of the cooled exhaust-gas part-stream by corresponding throttling of the two part-streams before they are brought together again. The exhaust-gas stream produced in this way is preferably used for the defined ageing of automotive exhaust catalysts. In this context, it is particularly advantageous that the change in the temperature of the exhaust-gas stream has no influence on its air/fuel ratio.
    Type: Grant
    Filed: December 17, 2005
    Date of Patent: March 25, 2014
    Assignee: Umicore AG & Co. KG
    Inventors: Juergen Gieshoff, Hartmut Finkbeiner, Thomas Kreuzer
  • Publication number: 20130263893
    Abstract: The present application provides a pulse detonation combustor cleaning device. The pulse detonation combustor cleaning device may include a combustion section and one or more combustion tube sections downstream of the combustion section. The combustion tube sections may a divergent shape and a number of divergent obstacles therein.
    Type: Application
    Filed: April 4, 2012
    Publication date: October 10, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Tian Xuan Zhang, David Michael Chapin, Robert Warren Taylor, Miles Alan Peregoy
  • Patent number: 8496471
    Abstract: Pilot light gas line connector assemblies and methods for cleaning a pilot light orifice are disclosed herein. An exemplary connector assembly for coupling to a pilot light gas line and cleaning a pilot orifice has a first fitting end, a second fitting end, and a passageway therebetween. The first fitting end is adapted to receive a first end of the pilot light gas line and the second fitting end is adapted to receive a valve capable of directing forced air from a forced air source into the second fitting end. Methods of cleaning a pilot orifice of a pilot light system include removing the pilot light gas line from a gas port and coupling the pilot light gas line to a pilot light gas line connector assembly. Then forced air is directed into the connector assembly and through the pilot light gas line, thereby cleaning the pilot orifice.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: July 30, 2013
    Inventor: Daniel B. Griffith
  • Patent number: 8486301
    Abstract: The disclosure relates to a method of utilizing a catalyst system for an oxidation process on a gaseous hydrocarbon stream with a mitigation of carbon accumulation. The system is comprised of a catalytically active phase deposited onto an oxygen conducting phase, with or without supplemental support. The catalytically active phase has a specified crystal structure where at least one catalytically active metal is a cation within the crystal structure and coordinated with oxygen atoms within the crystal structure. The catalyst system employs an optimum coverage ratio for a given set of oxidation conditions, based on a specified hydrocarbon conversion and a carbon deposition limit. Specific embodiments of the catalyst system are disclosed.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: July 16, 2013
    Assignee: U.S. Department of Energy
    Inventors: David A Berry, Dushyant Shekhawat, Mark Smith, Daniel Haynes
  • Patent number: 8443609
    Abstract: A gas-turbine burner for a gas turbine includes a fuel nozzle 1 having several fuel exit holes 23, which are each connected to a fuel line 5, 7, 29, 30, through which fuel can be passed selectively Between individual fuel exit holes 23, different static pressures of the airflow are provided between fuel lines flown by fuel and fuel lines not flown by fuel.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: May 21, 2013
    Assignee: Rolls-Royce Deutschland Ltd & Co KG
    Inventors: Thomas Doerr, Leif Rackwitz, Waldemar Lazik
  • Patent number: 8414288
    Abstract: A combustion system comprising a combustion chamber fed by fuel and oxidant delivery lines. The oxidant line has an oxidant tank pressurized by a compressor. The fuel delivery line has a fuel source and a fuel feed mechanism. An ignition device ignites the oxidant and fuel mixture in the combustion chamber. The coolant line is adapted to inject cooling fluid directly into the combustion chamber. An energy production device is disposed downstream a combustion chamber exhaust valve for converting energy from both exhausted combustion gases and coolant gases exhausted from the combustion chamber. In some embodiments the coolant is the oxidant, while in other embodiments the coolant is another fluid introduced from a separate coolant delivery line.
    Type: Grant
    Filed: November 2, 2009
    Date of Patent: April 9, 2013
    Inventor: Ilan Tzriker
  • Patent number: 8408148
    Abstract: The invention provides a method of increasing the efficiency of a combustion process by adding bentonite to the flame, fireball or burner region combustion zone of the combustion process. Also provided is a combustion chamber that includes a bentonite feed system and a fuel additive composition of a bentonite such as sodium bentonite having a particle size range that may be employed in the method of the present invention.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: April 2, 2013
    Assignee: Atlantic Combustion Technologies Inc.
    Inventor: William T. Digdon
  • 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
  • Publication number: 20120308940
    Abstract: Systems and methods for purging air and/or one or more inert gases from a flammable gas system, such as a natural gas pipeline, are described. In particular, this application discusses systems and methods for making and using a gas purge burner to purge air/inert gases from a flammable gas system. The gas purge burner includes a burner having a gas inlet and a gas escape vent. The burner also has a continuous ignition mechanism that includes an igniter (such as a pilot light and/or an electric igniter) that is disposed near the gas escape valve. The burner also has a gas outlet that can be disposed between the gas inlet and the gas escape vent and which is also configured to direct gases from the burner to a gas measurement device. The burner can be used to monitor the amount of flammable gas flowing into the burner and to continually ignite and burn off such gas until the stream of gas passing through the burner is substantially pure.
    Type: Application
    Filed: June 2, 2011
    Publication date: December 6, 2012
    Inventor: Vincent J. Caso
  • Patent number: 8316647
    Abstract: Methods and apparatuses are provided for protecting a catalyst within a combustor. In one embodiment, a catalytic reactor includes a protective coating that may be chemically removed or mechanically removed while the catalytic reactor is disposed in a combustor.
    Type: Grant
    Filed: January 19, 2009
    Date of Patent: November 27, 2012
    Assignee: General Electric Company
    Inventors: Gilbert Otto Kraemer, Cristina Colindres Kraemer
  • Patent number: 8246751
    Abstract: The present application provides a pulsed detonation cleaning system for cleaning an enclosed structure. The pulsed detonation cleaning system may include a pulsed detonation combustor cleaner and an external fuel-air flow. The pulsed detonation combustor cleaner delivers the external fuel-air flow into the enclosed structure and ignites the external fuel-air flow to clean the enclosed structure.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: August 21, 2012
    Assignee: General Electric Company
    Inventors: Tian Xuan Zhang, David Michael Chapin
  • Patent number: 8202083
    Abstract: A process and an installation for increasing the burning energy of a natural fuel gas upon burning the same for domestic or industrial purposes. The process includes the step of supplying the natural gas into a treatment chamber confined by a cylindrical-shaped wall made up of a diamagnetic material, in front of which electromagnetic units are placed in a spiral shape to create a rotating magnetic field which acts on the gas with only one polarity. The installation has a reactor equipped with electromagnetic units and with a heat circuit, with an oil tank, where a number of electric resistors are placed in order to heat the oil, a pump, an oil cooler and a circuit for the transport of oil from the tank to the electromagnetic units of the reactor, an electric panel, and conduits for the transport of the natural gas.
    Type: Grant
    Filed: May 19, 2006
    Date of Patent: June 19, 2012
    Inventors: Aurel Enache, Liviu Luca
  • Publication number: 20120138004
    Abstract: The invention relates to quaternary ammonium amide and/or ester salts and their use as additives, including their use in fuels, such as diesel fuel. The invention particularly relates to the use of quaternary ammonium amide and/or ester salts as detergents in diesel fuels.
    Type: Application
    Filed: May 6, 2010
    Publication date: June 7, 2012
    Applicant: THE LUBRIZOL CORPORATION
    Inventors: Paul R. Stevenson, James C. Ray, David J. Moreton, James H. Bush
  • Publication number: 20120107751
    Abstract: In order to stably operate a boiler using several kinds of solid fuels including depleted ash as fuels, adhesion of ash is suppressed. A calculator (9) preliminarily collects properties of a solid fuel, such as the content rate of ash and the composition of an ash constituent, as data (8). The calculator (9) uses the mix ratio of solid fuels as a parameter and calculates the composition of an ash constituent of the mixed fuels on the basis of the preliminarily measured composition of the ash constituent of each solid fuel. The calculator (9) determines a reference value of the rate of slug by which the ash deposition ratio is reduced on the basis of the relationship between the preliminarily measured ash deposition ratio and the slag ratio. Further, the calculator (9) calculates the mix ratio of each solid fuel using a thermodynamic equilibrium calculation so as to obtain an ash composition in which the slag ratio is not more than the determined reference value.
    Type: Application
    Filed: July 22, 2010
    Publication date: May 3, 2012
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Katsuya Akiyama, Haeyang Pak
  • Patent number: 8136740
    Abstract: A thermodynamic system that produces mechanical, electrical power, and/or fluid streams for heating or cooling. The cycle contains a combustion system that produces an energetic fluid by combustion of a fuel with an oxidant. A thermal diluent may be used in the cycle to improve performance, including but not limited to power, efficiency, economics, emissions, dynamic and off-peak load performance, and/or turbine inlet temperature (TIT) regulation and cooling heated components. The cycle preferably includes a heat recovery system and a condenser or other means to recover and recycle heat and the thermal diluent from the energetic fluid to improve the cycle thermodynamic efficiency and reduce energy conversion costs. The cycle may also include controls for temperatures, pressures, and flow rates throughout the cycle, and controls power output, efficiency, and energetic fluid composition.
    Type: Grant
    Filed: August 25, 2008
    Date of Patent: March 20, 2012
    Assignee: Vast Power Portfolio, LLC
    Inventors: David L. Hagen, Gary Ginter, Alberto Traverso, Bill Goheen, Allan McGuire, Janet Rankin, Aristide Massardo, Ronald L. Klaus
  • Publication number: 20120037096
    Abstract: A combustion apparatus includes combustion means generating combustion exhaust by combustion of fuel, heat exchange means exchanging heat of the combustion exhaust, and exhaust dilution unit supplying dilution air after the heat exchange by the heat exchange means and diluting the combustion exhaust after the heat exchange, and controls a temperature of the combustion exhaust after the heat exchange below a predetermined temperature by dilution by air supply.
    Type: Application
    Filed: August 16, 2010
    Publication date: February 16, 2012
    Applicant: TAKAGI INDUSTRIAL CO., LTD.
    Inventors: Akito Watanabe, Mituru Sano, Toshinobu Muku
  • Patent number: 8104258
    Abstract: The fuel system of a dual fuel turbine includes a flow control valve having a metering purge valve that in one state directly meters fuel to injectors of the turbine, in another state closes of fuel flow and passes purge air to the injectors and in another state positively closes of flow of both fuel and purge air. The metering purge valve is a pressure compensated spool valve that has a unique cross-ported interchange that passes fuel from the inlet through the spool to the metering edge. The direct metering of the valve to the injectors eliminates the need for additional shut off valves, and if used with a combining valve having an integral distributor section metering fuel to multiple injectors, the need for a separate flow divider is also eliminated. The valve can be actively cooled by dedicated coolant lines or lines shared with other flow control components such as additional metering valves for either the primary or secondary fuel.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: January 31, 2012
    Assignee: Jansen's Aircraft Systems Controls, Inc.
    Inventors: Harvey B. Jansen, Schuyler V. McElrath
  • Patent number: 8079845
    Abstract: There is a process for operating a utility boiler. The process has the following steps: a) continuously adding one or more slag control agents, one or more oxygen-generating agents, and a fuel oil to a furnace of the utility boiler; b) providing air to the furnace; c) burning the fuel oil to generate heat and an exhaust gas; d) periodically or continuously varying the dosage rates of the one or more slag control agents and/or the one or more oxygen-generating agents to maintain to substantially maintain one or more emissions variables in the exhaust gas within pre-determined limits. There is also a method for reducing emissions from a utility boiler and a method for reducing slag deposits within a utility boiler.
    Type: Grant
    Filed: December 19, 2005
    Date of Patent: December 20, 2011
    Assignee: Environmental Energy Services, Inc.
    Inventors: Ken Nowak, Rick Nowak, Chuck Noeding, Mark Pastore
  • Publication number: 20110256487
    Abstract: A detonation device cleaning system includes a vessel having a main body including an outer surface and an inner surface that collectively define an interior chamber. A detonation combustor cleaning device is mounted to the vessel. The detonation combustor cleaning device includes at least one combustion chamber that defines a combustion flow path. The at least one combustion chamber includes a deflection member arranged along the combustion flow path. An ignition device is operatively connected to the at least one combustion chamber. The ignition device is selectively activated to ignite fuel within the at least one combustion chamber to produce a shockwave that moves in a first direction along the combustion flow path, is redirected back along the flow path within the at least one combustion chamber, and passes into the interior chamber to dislodge particles clinging to the inner surface of the vessel.
    Type: Application
    Filed: June 24, 2011
    Publication date: October 20, 2011
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Anthony John Dean, David Michael Chapin, Donnell Eugene Crear
  • Patent number: 8029271
    Abstract: A self-cleaning burner system incorporates an automatic clean cycle when the burner is started up. Cycles may be programmed for once-a-day cleaning cycle or for other desired interval. On start-up, the cycle routes a small amount of fuel to the burner for ignition inside the burner to clean the burner surfaces. The system incorporates an igniter for fast, routine, and safe ignition of the fuel. Thus, small amounts of debris that accumulate on a surface burner are automatically ignited when the burner is started, keeping the burner clean and operating at a high state of efficiency at all times. The self-cleaning burner system may be incorporated into a fryer or other heating appliance for reliable, efficient operation.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: October 4, 2011
    Assignee: Pitco Frialator Inc.
    Inventors: Anthony F. Reale, David W. Tucci, George McMahon, John P. Gardner, Francis H. Ingram, Steven J. Savage, Nathaniel A. Lambert, Martin W. Lawrence
  • Publication number: 20110183276
    Abstract: An apparatus for the degassing of a dust from a synthesis gas produced by a gasification process, is disclosed. The apparatus comprises a main dust separator, a multi-purpose vessel, fluid for degassing and cooling and a storage facility for dust. The synthesis gas produced is conducted via a connecting pipe to a main dust separator, from which a de-dusted raw synthesis gas stream and a dust-like solid which also contains raw synthesis gas in the voids between the dust particles can be removed. The dust-like solid is directed into a multi-purpose vessel equipped with devices for reducing the pressure level so that a tail gas is obtained and a solid containing lower gas quantities in the void fraction remains. There is a device for transporting a solid into a gas exchange apparatus, the latter comprising a gas exchange tank, a dust separator and a feed device for exchange gas. It is possible to reduce the gas exchange tank to atmospheric pressure.
    Type: Application
    Filed: July 29, 2009
    Publication date: July 28, 2011
    Applicant: UHDE GMBH
    Inventor: Stefan Hamel
  • Publication number: 20110183275
    Abstract: With a method and a device for igniting and operating burners when gasifying a carbon-containing fuel using at least two gasification burners, start of the pressure gasification with short start times is made possible, at high pressures, without prior inertization of the gas space, while avoiding continuous fuel gas consumption in the pilot burner or ignition burner and also protecting stationary ignition burners against contamination by configuring one gasification burner as a start-up burner, which is ignited by at least one pilot burner using an electrical ignition device. A combustible gas mixture including a fuel gas and oxygen-containing gas is ignited by the pilot burner, in the start-up burner. After ignition of the start-up burner, at least one further gasification burner is ignited by this burner. The start-up burner is operated further as one of the gasification burners of the carbon-containing fuel via a change in medium.
    Type: Application
    Filed: July 7, 2009
    Publication date: July 28, 2011
    Applicant: UHDE GmbH
    Inventors: Eberhard Kuske, Johannes Kowoll, Hubert Werneke, Frank Dziobek
  • Patent number: 7959432
    Abstract: A device for cleaning contamination in heat exchangers, waste-heat boilers, or combustion chambers is provided. In some embodiments, the device comprises a tube, a blasting body, and a combustible gas mixture within the tube. In some embodiments, the tube is destroyed after blasting. In some embodiments, the device further comprises a second tube comprising a blasting cord that is connected to a fuse, wherein the second tube is coupled to the first tube by a hinge.
    Type: Grant
    Filed: June 1, 2005
    Date of Patent: June 14, 2011
    Inventor: Frans Steur, Jr.
  • Patent number: 7934924
    Abstract: A system and method for providing continuous measurement and control of a combustion device by altering the fuel composition delivered thereto. The system includes devices for sensing combustion characteristics or other device characteristics, and controlling the performance of the combustion device based on the sensed information. Performance control occurs via addition of one or more additives to the fuel to adjust combustion characteristics. Via such sensing and performance control, consistent combustion device performance may be maintained, despite varying fuel characteristics. In one variation,—characteristics of the combustion device in operation, such as flame characteristics, are sensed and used to adjust fuel characteristics via iterative addition of one or more additives.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: May 3, 2011
    Assignee: Combustion Science & Engineering, Inc.
    Inventors: Richard G. Joklik, Richard J. Roby, Michael S. Klassen, John L. Battaglioli, Andrew J. Hamer, Diwakar Vashishat
  • Patent number: 7910075
    Abstract: A method of protecting a NOx reducing catalyst 140 from fouling, where the NOx reducing catalyst 140 is downstream of a circulating fluidized bed (CFB) boiler 120 and upstream of a particulate removal device 150. The method includes introducing a SOx removing reagent 212 in a calcium to sulfur molar ratio greater than that required for SO2 removal from a flue gas 122 generated by a CFB 120, thereby preventing SO3 formation and fouling of the NOx reducing catalyst 140.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: March 22, 2011
    Assignee: ALSTOM Technologies Ltd.
    Inventors: Lawrence J. Czarnecki, Mikael Larsson
  • Publication number: 20110003259
    Abstract: A self-cleaning burner system incorporates an automatic clean cycle when the burner is started up. Cycles may be programmed for once-a-day cleaning cycle or for other desired interval. On start-up, the cycle routes a small amount of fuel to the burner for ignition inside the burner to clean the burner surfaces. The system incorporates an igniter for fast, routine, and safe ignition of the fuel. Thus, small amounts of debris that accumulate on a surface burner are automatically ignited when the burner is started, keeping the burner clean and operating at a high state of efficiency at all times. The self-cleaning burner system may be incorporated into a fryer or other heating appliance for reliable, efficient operation.
    Type: Application
    Filed: June 8, 2010
    Publication date: January 6, 2011
    Inventors: Anthony F. Reale, David W. Tucci, George McMahon, John P. Gardner, Francis H. Ingram, Steven J. Savage, Nathaniel A. Lambert, Martin W. Lawrence
  • Patent number: 7845292
    Abstract: A slag and corrosion control process is described. The process entails: identifying the location of at least one slagging problem area in a boiler; introducing a slag control chemical comprising magnesium oxide or hydroxide into combustion gases in a location identified as having a slagging problem; identifying the location of at least one corrosion problem area in a boiler; and introducing a corrosion control chemical comprising a sulfate salt, bisulfite salt, sulfuric acid, or sulfur into combustion gases in a location identified as having a corrosion problem. In operation, these slag deposits will be sufficiently friable to be removed by relatively moderate application of physical energy, thus saving time and reducing any damage to the tubes by the cleaning process. The slag deposits are less voluminous and less in weight and are removed quickly. It is an advantage of the invention that slag can be removed with little or no shut down of a boiler.
    Type: Grant
    Filed: October 12, 2006
    Date of Patent: December 7, 2010
    Assignee: Fuel Tech, Inc.
    Inventors: J. David Martin, Christopher R. Smyrniotis, Kent W. Schulz, William H. Sun, Scott K. Bohlen, Glenn Brewer
  • Patent number: 7731490
    Abstract: A self-cleaning burner system incorporates an automatic clean cycle when the burner is started up. Cycles may be programmed for once-a-day cleaning cycle or for other desired interval. On start-up, the cycle routes a small amount of fuel to the burner for ignition inside the burner to clean the burner surfaces. The system incorporates an igniter for fast, routine, and safe ignition of the fuel. Thus, small amounts of debris that accumulate on a surface burner are automatically ignited when the burner is started, keeping the burner clean and operating at a high state of efficiency at all times. The self-cleaning burner system may be incorporated into a fryer or other heating appliance for reliable, efficient operation.
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: June 8, 2010
    Assignee: Pitco Frialator, Inc.
    Inventors: Anthony F. Reale, David W. Tucci, George McMahon, John P. Gardner, Francis H. Ingram, Steven J. Savage, Nathaniel A. Lambert, Martin W. Lawrence
  • Patent number: 7704375
    Abstract: The invention relates to a process for operating a condensing boiler in which the fuel is a Fischer-Tropsch product which boils for more than 90 wt % between 160 and 400° C. and contains more than 80 wt % of iso and normal paraffins, less than 1 wt % aromatics, less than 5 ppm sulfur and less than 1 ppm nitrogen and wherein the density of the Fischer-Tropsch product is between 0.65 g/cm3 and 0.8 g/cm3 at 15° C.
    Type: Grant
    Filed: July 17, 2003
    Date of Patent: April 27, 2010
    Assignee: Shell Oil Company
    Inventor: Frank Haase
  • Patent number: 7651329
    Abstract: In an exhaust gas processing device wherein in order to efficiently outwardly discharge heat at high temperatures of about 90-150° C. released from a GGH reheater during the shutdown of a desulfurizer, to prevent damage to equipment and corrosion preventive lining material, and to ensure long-term stabilized use of the exhaust gas processing device, at least a GGH heat recovery unit, an absorption tower, a mist eliminator (M/E), and the GGH reheater are placed in a duct for exhaust gases discharged from a fire furnace, in the order named as seen from the upstream side of a flow of exhaust gases, an exhaust gas duct between the M/E and the reheater is provided with a heat radiation device or the like having a heat suppression function for suppressing dissipated heat from the reheater.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: January 26, 2010
    Assignee: Babcock-Hitachi Kabushiki Kaisha
    Inventors: Hajime Okura, Toshio Katsube, Takayuki Saito
  • Patent number: 7618595
    Abstract: An assembly is provided for purifying toxic gases from production processes by thermal conversion in a reactor chamber and subsequent treatment of reaction products with a sorption agent in a washing device in order to bind water-soluble reaction products and to elute solid reaction products. The reactor chamber has an external wall and an internal wall, the internal wall tapering at its base in the form of a funnel at a predetermined angle. A unit for thermal treatment of toxic gases is located on the reactor chamber, sealing the top of the chamber. An inner face of the internal wall of the reactor chamber comprises a film of water flowing downwards in a uniform manner. The exterior of the internal wall is surrounded by a cloak of water. A waste gas outlet and a connection for a water circuit are located at the lower end of the tapering internal wall.
    Type: Grant
    Filed: September 22, 2005
    Date of Patent: November 17, 2009
    Assignee: Centrotherm Clean Solutions GmbH & Xo. KG
    Inventors: Robert Michael Hartung, Volker Kinzig, Rolf Hartung
  • Publication number: 20090092935
    Abstract: A process for degassing or presoaking wicks used in the manufacturing of candles. Spools of raw wick are placed in a wax bath. The door to the vacuum chamber is then closed and the pressure in the chamber is reduced. The reduction of the pressure forces wax into the wick fiber to ensure complete saturation of the wick.
    Type: Application
    Filed: October 5, 2007
    Publication date: April 9, 2009
    Applicant: The Yankee Candle Company, Inc.
    Inventor: John E. Cagle
  • Patent number: 7507084
    Abstract: A method and apparatus for on-line wash-down of a heat sink media bed in a regenerative heat exchanger of a regenerative fume incinerator is disclosed. When a heat sink media bed requires cleaning, the selected regenerative heat exchanger is cooled while the remaining regenerative heat exchangers are operated in their normal mode of operation. When the selected media bed reaches a temperature which is less than the thermal-shock temperature of the media material, a cleaning fluid is sprayed on the media surfaces through spray-pipes which are installed within the media bed. After the media surfaces are washed down, the selected regenerative heat-exchanger is reverted back to its normal mode of operation. The regenerative heat exchanger can also be automatically burnt-out of deposited gasifiable matter prior to the wash-down. Random or sequential burn-out and wash-down of the regenerative heat-exchangers can be performed.
    Type: Grant
    Filed: November 17, 2005
    Date of Patent: March 24, 2009
    Assignee: Pro-Environmental Inc
    Inventors: Joseph David Chiles, Jeffrey J. Yerkes, John G. Kirkland, Agustin Cabarlo, Anu D. Vij
  • Publication number: 20090075219
    Abstract: The invention relates to an oxycombustion method with capture of the CO2 produced. Mixer M supplies chamber CC with a mixture of oxygen from unit O and of recycled fumes from storage drum SG. Chamber CC is supplied with oxidizer from mixer M and with fuel flowing in through line 8. All of the combustion fumes are sent to water condensation unit CT, then fed into storage drum SG. Part of the fumes containing all the CO2 produced by combustion is compressed to about 60 bars, then cooled and partly liquefied to about 15° C. in liquefaction unit L1, and stored in drum SM. According to the invention, the partly liquefied CO2 is compressed by means of a multiphase pump in order to be discharged through line 16 and stored in an underground reservoir.
    Type: Application
    Filed: October 4, 2006
    Publication date: March 19, 2009
    Inventors: Regis Vilagines, Thorsten Burkhardt, Jean Falcimaigne, Paul Broutin
  • Publication number: 20080292998
    Abstract: The burning of fuel (e.g., coal) in industrial equipment generates an exhaust flow containing airborne particulate. The flow is passed through a rotary heat exchanger to preheat inlet air. The heat exchanger element is subject to fouling and is cleaned by a pulsed combustion device. The device is operated by introducing a fuel and oxidizer charge to at least one conduit and initiating combustion of the charge. The combustion generates a shock wave to which the element is exposed, dislodging and/or otherwise removing the deposits.
    Type: Application
    Filed: May 25, 2007
    Publication date: November 27, 2008
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: James R. Hochstein, JR., David E. Steele, Thomas R.A. Bussing, John P. Harty
  • Patent number: 7442034
    Abstract: An apparatus for cleaning a surface within a vessel has an elongate combustion conduit extending from an upstream end to a downstream end. The downstream end is associated with an aperture in the wall of the vessel and is positioned to direct a shockwave toward the surface. At least one hanger supports the combustion conduit at at least one location along a length of the combustion conduit.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: October 28, 2008
    Assignee: SHOCKSystem, Inc.
    Inventors: Blake C. Chenevert, Ralph E. McDonald, Raymond N Henderson, Paul M. Brown
  • Patent number: 7435080
    Abstract: A system and method for providing continuous measurement and control of a combustion device by altering the fuel composition delivered thereto. The system includes devices for sensing related information, such as fuel characteristics, combustion characteristics, or other device characteristics, and controlling the performance of the combustion device based on the sensed information. Performance control occurs via addition of one or more additives to the fuel to adjust combustion characteristics. Via such sensing and performance control, consistent combustion device performance may be maintained, despite varying fuel characteristics. In one variation, sensing occurs for the fuel delivered to the combustion device, and one or more additives are added to the fuel, based on the composition and flow rate for the fuel.
    Type: Grant
    Filed: January 12, 2005
    Date of Patent: October 14, 2008
    Assignee: Combustion Science & Engineering, Inc.
    Inventors: Richard G. Joklik, Richard J. Roby, Michael S. Klassen, John L. Battaglioli, Andrew J. Hamer, Diwakar Vashishat
  • Publication number: 20080149532
    Abstract: A process for reducing the rate of increase in pressure drop across a furnace convection section, the furnace convection section having a temperature profile. The process includes the steps of establishing a ratio of total dilution H2O to feedstock for the system, injecting a first portion of the total dilution H2O in the form of water into the convection section of the furnace, injecting a second portion of the dilution H2O in the form of steam into the convection section of the furnace, wherein a ratio of dilution H2O in the form of water to dilution H2O in the form of steam is established and varying the temperature profile across the convection section of the furnace by adjusting periodically the ratio of dilution H2O in the form of water to dilution H2O in the form of steam. A similar technique is conducted during decoking to remove asphaltene coke starting from the lower convection section upward.
    Type: Application
    Filed: June 25, 2007
    Publication date: June 26, 2008
    Inventors: Richard C. Stell, James N. McCoy
  • Patent number: 7276094
    Abstract: A hydrocarbonaceous fuel additive, fuel composition, and method all lower both carbon particulate emissions and improve slag properties in combustion systems including, for instance, utility furnaces and boiler systems. The mixed metal catalyst may include a transition metal-containing compound, an alkali metal compound, and a magnesium-containing compound.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: October 2, 2007
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventors: Stephen A. Factor, Joseph W. Roos, Allen A. Aradi
  • Patent number: 7225998
    Abstract: A method and apparatus for vaporizing liquid fuel. The apparatus includes at least one capillary flow passage, the at least one capillary flow passage having an inlet end and an outlet end; a fluid control valve for placing the inlet end of the at least one capillary flow passage in fluid communication with the liquid fuel source and introducing the liquid fuel in a substantially liquid state; a heat source arranged along the at least one capillary flow passage, the heat source operable to heat the liquid fuel in the at least one capillary flow passage to a level sufficient to change at least a portion thereof from the liquid state to a vapor state and deliver a stream of substantially vaporized fuel from the outlet end of the at least one capillary flow passage; and means for cleaning deposits formed during operation of the apparatus. The flow passage can be a capillary tube heated by a resistance heater or a section of a tube heated by passing electrical energy therethrough.
    Type: Grant
    Filed: December 7, 2004
    Date of Patent: June 5, 2007
    Assignee: Philip Morris USA Inc.
    Inventor: Roberto O. Pellizzari
  • Patent number: 7109446
    Abstract: A system for analyzing the impact of operating soot blowers in a heat transfer section of a power plant determines a steam temperature influencing sequence and calculates a feed-forward signal to be applied to a steam temperature control system of the heat transfer section. The system operates a group of soot blowers for a number of times and collects quantitative data related to the steam temperature during and after each soot blowing operation. A computer program used by the system analyzes the quantitative data, generates a number of statistical parameters for evaluating the impact of operating the soot blowers according to a given sequence on the steam temperature, and determines whether the given sequence is a steam temperature influencing sequence.
    Type: Grant
    Filed: February 14, 2005
    Date of Patent: September 19, 2006
    Assignee: Emerson Process Management Power & Water Solutions, Inc.
    Inventors: Xu Cheng, Richard W. Kephart
  • Patent number: 6948926
    Abstract: Residual fuels, as well as lighter distillate fuels, are combusted with greater efficiency by utilizing low concentrations of specific bimetallic or trimetallic fuel-borne catalysts. The catalysts reduce fouling of heat transfer surfaces by unburned carbon while limiting the amount of secondary additive ash which may itself cause overloading of particulate collector devices or emissions of toxic ultra fine particles when used in forms and quantities typically employed. By utilizing a fuel containing a fuel-soluble catalyst comprised of platinum and at least one additional metal comprising cerium and/or iron, production of pollutants of the type generated by incomplete combustion is reduced. Ultra low levels of nontoxic metal combustion catalysts are able to be employed for improved heat recovery and lower emissions of regulated pollutants.
    Type: Grant
    Filed: November 29, 2002
    Date of Patent: September 27, 2005
    Assignee: Clean Diesel Technologies, Inc.
    Inventors: James M. Valentine, Barry N. Sprague
  • Patent number: 6890170
    Abstract: A heater in which, during the glow plug ramp time interval, the amount of energy supplied per unit of time to the glow plug/flame monitor can be successively changed, and a control unit which is operationally coupled to the glow plug/flame monitor. To enable continuous flame monitoring during the starting phase of the heater with the control unit, the resistance value of the glow plug/flame monitor is determined during the glow plug ramp time interval and compared to a threshold value RGS, and when the threshold value RGS is not reached, a flame-out signal is generated.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: May 10, 2005
    Assignee: Webasto Thermosysteme International GmbH
    Inventors: Christian Bäcker, Werner Höglmaier, Felix Wolf