Patents by Inventor Rajeev S. PRABHAKAR

Rajeev S. PRABHAKAR has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9285113
    Abstract: A burner has a fuel/oxidant nozzles and a pair of dynamical lances spaced on either side thereof that inject a jet of fuel and primary oxidant along a fuel injection axis, and jets of secondary oxidant, respectively. Jets of actuating fluid impinge against the jets of secondary oxidant to fluidically angle the jets of secondary oxidant away from the fuel injection axis. The action of the angling away together with staging of the oxidant between primary and secondary oxidant injections allows achievement of distributed combustion conditions.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: March 15, 2016
    Assignees: L'Air Liquide Société Anonyme Pour L'Étude Et L'Exploitation Des Procedes Georges Clause, American Air Liquide, Inc., Air Liquide Advanced Technologies U.S. LLC
    Inventors: Taekyu Kang, Vivek Gautam, Rajeev S. Prabhakar, Benoit Grand, Bertrand Leroux, Magnus Mortberg, Nicolas Docquier
  • Publication number: 20150068437
    Abstract: A burner has a fuel/oxidant nozzles and a pair of dynamical lances spaced on either side thereof that inject a jet of fuel and primary oxidant along a fuel injection axis, and jets of secondary oxidant, respectively. Jets of actuating fluid impinge against the jets of secondary oxidant to fluidically angle the jets of secondary oxidant away from the fuel injection axis. The action of the angling away together with staging of the oxidant between primary and secondary oxidant injections allows achievement of distributed combustion conditions.
    Type: Application
    Filed: November 6, 2014
    Publication date: March 12, 2015
    Inventors: Taekyu KANG, Vivek GAUTAM, Rajeev S. PRABHAKAR, Benoit GRAND, Bertrand LEROUX, Magnus MORTBERG, Nicolas DOCQUIER
  • Patent number: 8915731
    Abstract: A burner has a fuel/oxidant nozzles and a pair of dynamical lances spaced on either side thereof that inject a jet of fuel and primary oxidant along a fuel injection axis, and jets of secondary oxidant, respectively. Jets of actuating fluid impinge against the jets of secondary oxidant to fluidically angle the jets of secondary oxidant away from the fuel injection axis. The action of the angling away together with staging of the oxidant between primary and secondary oxidant injections allows achievement of distributed combustion conditions.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: December 23, 2014
    Assignees: L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude, American Air Liquide, Inc., Air Liquide Advanced Technologies, U.S. LLC
    Inventors: Taekyu Kang, Vivek Gautam, Rajeev S. Prabhakar, Benoit Grand, Bertrand Leroux, Magnus Mortberg, Nicolas Docquier
  • Patent number: 8827691
    Abstract: During a heating phase, injection of a jet of fuel and oxidant (fuel annularly enshrouding oxidant or oxidant annularly enshrouding fuel) from a fuel-oxidant nozzle is combusted in a combustion space. During a transition from the heating phase to a distributed combustion phase, an amount of a secondary portion of either the fuel or oxidant is injected as a jet into the combustion space while the primary portion of that same reactant from the fuel-oxidant nozzle is decreased. At some point during the transition phase, a jet of actuating fluid is injected at an angle towards the jet of reactants from the fuel-oxidant nozzle and/or towards the jet of the secondary portion of reactant. The jet of primary portions of reactants and/or secondary portion of reactant is caused to be bent/deviated towards the other of the two jets. The staging of the secondary portion of reactant is increased until a desired degrees of staging and commencement of a distributed combustion phase are achieved.
    Type: Grant
    Filed: July 31, 2010
    Date of Patent: September 9, 2014
    Assignees: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude, American Air Liquide, Inc.
    Inventors: Rajeev S. Prabhakar, Remi Pierre Tsiava, Magnus Mortberg, Benoit Grand, Bertrand Leroux, Vivek Gautam
  • Publication number: 20130344404
    Abstract: A hybrid humidifier fuel cell for ensuring adequate humidification of a reactant gas stream in a fuel cell stack, during both steady-state, as well as transient operation. The device provides for improved performance through the use a primary humidification and a secondary humidification.
    Type: Application
    Filed: November 16, 2012
    Publication date: December 26, 2013
    Applicant: L'Air Liquide Societe Anonyme Pour l'Etude et l'Expoitation des Procedes Georges Claude
    Inventors: Philippe A. COIGNET, Rajeev S. Prabhakar
  • Publication number: 20130344405
    Abstract: A method of using a hybrid humidifier fuel cell for ensuring adequate humidification of a reactant gas stream in a fuel cell stack, during both steady-state, as well as transient operation. The device provides for improved performance through the use a primary humidification and a secondary humidification.
    Type: Application
    Filed: November 16, 2012
    Publication date: December 26, 2013
    Applicant: L'Air Liquide Societe Anonyme Pour l'Etude et l'Expoitation des Procedes Georges Claude
    Inventors: Philippe A. COIGNET, Rajeev S. PRABHAKAR
  • Publication number: 20120171629
    Abstract: A burner has a fuel/oxidant nozzles and a pair of dynamical lances spaced on either side thereof that inject a jet of fuel and primary oxidant along a fuel injection axis, and jets of secondary oxidant, respectively. Jets of actuating fluid impinge against the jets of secondary oxidant to fluidically angle the jets of secondary oxidant away from the fuel injection axis. The action of the angling away together with staging of the oxidant between primary and secondary oxidant injections allows achievement of distributed combustion conditions.
    Type: Application
    Filed: December 30, 2010
    Publication date: July 5, 2012
    Applicants: American Air Liquide, Inc., Air Liquide Advanced Technologies U.S. LLC, L'Air Liquide Societe Anonyme Pour L'Etude Et L 'Exploitation Des Procedes Georges Claude
    Inventors: Taekyu KANG, Vivek GAUTAM, Rajeev S. PRABHAKAR, Benoit GRAND, Bertrand LEROUX, Magnus MORTBERG, Nicolas Docquier
  • Publication number: 20120009531
    Abstract: During a heating phase, injection of a jet of fuel and oxidant (fuel annularly enshrouding oxidant or oxidant annularly enshrouding fuel) from a fuel-oxidant nozzle is combusted in a combustion space. During a transition from the heating phase to a distributed combustion phase, an amount of a secondary portion of either the fuel or oxidant is injected as a jet into the combustion space while the primary portion of that same reactant from the fuel-oxidant nozzle is decreased. At some point during the transition phase, a jet of actuating fluid is injected at an angle towards the jet of reactants from the fuel-oxidant nozzle and/or towards the jet of the secondary portion of reactant. The jet of primary portions of reactants and/or secondary portion of reactant is caused to be bent/deviated towards the other of the two jets. The staging of the secondary portion of reactant is increased until a desired degrees of staging and commencement of a distributed combustion phase are achieved.
    Type: Application
    Filed: July 31, 2010
    Publication date: January 12, 2012
    Applicants: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude, American Air Liquide, Inc.
    Inventors: Rajeev S. Prabhakar, Remi Pierre TSIAVA, Magnus MORTBERG, Vivek GAUTAM, Benoit GRAND, Bertrand LEROUX
  • Publication number: 20120009532
    Abstract: During a heating phase, injection of a jet of fuel and oxidant (fuel annularly enshrouding oxidant or oxidant annularly enshrouding fuel) from a fuel-oxidant nozzle is combusted in a combustion space. During a transition from the heating phase to a distributed combustion phase, an amount of a secondary portion of either the fuel or oxidant is injected as a jet into the combustion space while the primary portion of that same reactant from the fuel-oxidant nozzle is decreased. At some point during the transition phase, a jet of actuating fluid is injected at an angle towards the jet of reactants from the fuel-oxidant nozzle and/or towards the jet of the secondary portion of reactant. The jet of primary portions of reactants and/or secondary portion of reactant is caused to be bent/deviated towards the other of the two jets. The staging of the secondary portion of reactant is increased until a desired degrees of staging and commencement of a distributed combustion phase are achieved.
    Type: Application
    Filed: July 31, 2010
    Publication date: January 12, 2012
    Inventors: Rajeev S. Prabhakar, Remi Pierre Tsiava, Magnus Mortberg, Benoit Grand, Bertrand Leroux, Vivek Gautam
  • Publication number: 20110183278
    Abstract: The invention relates to a combustion tool including a quarl block made of refractory material, the quarl block defining a quarl exit and a passage between the entry surface and quarl block, said tool including an injector of oxidizer and/or fuel that extends through the passage and opens into the quarl block, and also including a sheath that surrounds the injector in the passage section.
    Type: Application
    Filed: February 25, 2009
    Publication date: July 28, 2011
    Applicant: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude
    Inventors: Brenice Belasse, Robert Kalcevic, Chendhil Periasamy, Rajeev S. Prabhakar
  • Publication number: 20110000261
    Abstract: A burner recessed from a combustion space in a burner block adjacent the combustion space injects a secondary reactant (a second portion of a first reactant) around and upstream of a stream of a primary reactant (a first portion of the first reactant) and a stream of a second reactant in order to prevent or inhibit deposition of material from recirculating gases in the combustion space upon the burner. The first reactant is one of a fuel and an oxidant while the second reactant is the other of a fuel and an oxidant. The secondary stream may be injected from a continuous annulus formed in an outer body of the burner or from a plurality of radially spaced holes formed in the outer body. The primary stream is injected from one of an inner bore formed in an inner body of the burner and a reactant annulus defined between the inner and outer bodies while the second reactant is injected from the other of the inner bore and the reactant annulus.
    Type: Application
    Filed: July 2, 2009
    Publication date: January 6, 2011
    Applicant: American Air Liquide, Inc.
    Inventors: Rajeev S. PRABHAKAR, Chendhil Periasamy, Justin J. Wang, Robert Kalcevic
  • Publication number: 20100275777
    Abstract: Disclosed is a membrane-based method and system for treatment of flue gases from an oxy-combustion coal-fired boiler to recover approximately 90% (vol/vol) to approximately 95% (vol/vol) of the carbon dioxide in the flue gas and produce a carbon dioxide product having a carbon dioxide concentration of approximately 90% (vol/vol dry basis) to approximately 97% (vol/vol dry basis).
    Type: Application
    Filed: April 30, 2009
    Publication date: November 4, 2010
    Inventors: David J. HASSE, Rajeev S. PRABHAKAR
  • Publication number: 20090007779
    Abstract: A feed gas is separated into a CO2-lean stream and a CO2-enriched stream at a CO2 enriching unit. The CO2-enriched gas is fed to a greenhouse to enhance plant growth. The feed gas may include air and/or vent gas from the greenhouse.
    Type: Application
    Filed: December 28, 2007
    Publication date: January 8, 2009
    Inventors: Philippe A. COIGNET, Rajeev S. PRABHAKAR