Patents by Inventor Kuang-Tsai Wu

Kuang-Tsai Wu 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).

  • ENHANCEMENT OF THERMOCHEMICAL REGENERATION OPERATION
    Publication number: 20220146202
    Abstract: A combustion method in which heated flue gas heats a regenerator through which a mixture of fuel and flue gas is then passed to undergo endothermic reactions that produce syngas which is fed into a furnace together with a motive gas stream, wherein fuel is combusted with the motive gas stream to provide heat in alternate cycles.
    Type: Application
    Filed: April 15, 2020
    Publication date: May 12, 2022
    Inventors: Arthur W. Francis, Hisashi Kobayashi, Robert L. Bell, Kuang-Tsai Wu
  • Reduction of regenerator clogging
    Patent number: 10712092
    Abstract: A thermochemical regenerator system is operated without encountering accumulation of unwanted solids on the interior surfaces of the passages through which flue gas passes.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: July 14, 2020
    Assignee: Praxair Technology, Inc.
    Inventors: Hisashi Kobayashi, Kuang-Tsai Wu
  • THERMOCHEMICAL REGENERATION WITH SOOT FORMATION
    Publication number: 20200109853
    Abstract: Operation of a thermochemical regenerator to generate soot or to increase the amount of soot generated improves the performance of a furnace with which the thermochemical regenerator is operated.
    Type: Application
    Filed: December 5, 2019
    Publication date: April 9, 2020
    Inventors: Kuang-Tsai Wu, Hisashi Kobayashi
  • Thermochemical regeneration with superadiabatic flame temperature
    Patent number: 10611976
    Abstract: Operation of a thermochemical regenerator at a controlled ratio of recycled flue gas to reforming fuel provides formation of fuel species that permit a higher flame temperature upon combustion of the resulting combustible mixture.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: April 7, 2020
    Assignee: Praxair Technology, Inc.
    Inventors: Hisashi Kobayashi, Kuang-Tsai Wu
  • Thermochemical regeneration with soot formation
    Patent number: 10533743
    Abstract: Operation of a thermochemical regenerator to generate soot or to increase the amount of soot generated improves the performance of a furnace with which the thermochemical regenerator is operated.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: January 14, 2020
    Assignee: Praxair Technology, Inc.
    Inventors: Kuang-Tsai Wu, Hisashi Kobayashi
  • COMBUSTION METHOD FOR LOW VELOCITY REACTANT STREAMS
    Publication number: 20190337832
    Abstract: A combustion method in which heated flue gas heats a regenerator through which a mixture of fuel and flue gas is then passed to undergo endothermic reactions that produce syngas which is fed into a furnace together with a motive gas stream.
    Type: Application
    Filed: June 28, 2019
    Publication date: November 7, 2019
    Inventors: Arthur W. Francis, JR., Hisashi Kobayashi, Kuang-Tsai Wu
  • Combustion method for low velocity reactant streams
    Patent number: 10392284
    Abstract: A combustion method in which heated flue gas heats a regenerator through which a mixture of fuel and flue gas is then passed to undergo endothermic reactions that produce syngas which is fed into a furnace together with a motive gas stream.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: August 27, 2019
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Arthur W. Francis, Jr., Hisashi Kobayashi, Kuang-Tsai Wu
  • Low-NOx combustion method
    Patent number: 10184659
    Abstract: Disclosed is a combustion method in which heated flue gas heats a regenerator through which a mixture of fuel and flue gas containing NOx is passed to undergo endothermic reactions that produce syngas and destroy NOx.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: January 22, 2019
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Kuang-Tsai Wu, Hisashi Kobayashi
  • Thermochemical regeneration with fuel additions
    Patent number: 10112860
    Abstract: Operation of a thermochemical regenerator combustion system in which fuel is fed with furnace flue gas into the regenerators to reduce the oxygen content and optionally to establish a reducing atmosphere in both cycles in which the regenerators operate.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: October 30, 2018
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Hisashi Kobayashi, Kuang-Tsai Wu
  • REDUCTION OF REGENERATOR CLOGGING
    Publication number: 20180283789
    Abstract: A thermochemical regenerator system is operated without encountering accumulation of unwanted solids on the interior surfaces of the passages through which flue gas passes.
    Type: Application
    Filed: March 23, 2018
    Publication date: October 4, 2018
    Inventors: Hisashi Kobayashi, Kuang-Tsai Wu
  • THERMOCHEMICAL REGENERATION WITH SUPERADIABATIC FLAME TEMPERATURE
    Publication number: 20180201853
    Abstract: Operation of a thermochemical regenerator at a controlled ratio of recycled flue gas to reforming fuel provides formation of fuel species that permit a higher flame temperature upon combustion of the resulting combustible mixture.
    Type: Application
    Filed: January 3, 2018
    Publication date: July 19, 2018
    Inventors: Hisashi Kobayashi, Kuang-Tsai Wu
  • COMBUSTION METHOD FOR LOW VELOCITY REACTANT STREAMS
    Publication number: 20180118600
    Abstract: A combustion method in which heated flue gas heats a regenerator through which a mixture of fuel and flue gas is then passed to undergo endothermic reactions that produce syngas which is fed into a furnace together with a motive gas stream.
    Type: Application
    Filed: April 14, 2016
    Publication date: May 3, 2018
    Inventors: Arthur W. Francis, Jr., Hisashi Kobayashi, Kuang-Tsai Wu
  • THERMOCHEMICAL REGENERATION WITH SOOT FORMATION
    Publication number: 20160370005
    Abstract: Operation of a thermochemical regenerator to generate soot or to increase the amount of soot generated improves the performance of a furnace with which the thermochemical regenerator is operated.
    Type: Application
    Filed: June 16, 2016
    Publication date: December 22, 2016
    Inventors: Kuang-Tsai Wu, Hisashi Kobayashi
  • LOW-NOX COMBUSTION METHOD
    Publication number: 20160305656
    Abstract: Disclosed is a combustion method in which heated flue gas heats a regenerator through which a mixture of fuel and flue gas containing NOx is passed to undergo endothermic reactions that produce syngas and destroy NOx.
    Type: Application
    Filed: April 8, 2016
    Publication date: October 20, 2016
    Inventors: KUANG-TSAI WU, HISASHI KOBAYASHI
  • COMBUSTION OF CO AND COMBUSTIBLES IN STEEL FURNACE OFFGASES
    Publication number: 20140076106
    Abstract: A hot oxygen stream containing radicals is fed into an offgas stream from a steelmaking vessel to convert carbon monoxide in the offgas to carbon dioxide.
    Type: Application
    Filed: November 22, 2013
    Publication date: March 20, 2014
    Inventors: Kuang Tsai Wu, Euan John Evenson
  • Reducing crown corrosion in a glassmelting furnace
    Patent number: 8640500
    Abstract: Corrosion of the inner surface of the crown of a glassmelting furnace is reduced or avoided by directing at low velocity along that surface a gaseous stream comprising water vapor, or comprising the combustion products of an oxy-fuel burner operated at a stoichiometric ratio of at least 1.0, or the combustion products of a burner operated at a stoichiometric ratio less than 1.0, or by injecting into the furnace interior a gaseous reactant which reacts with alkali species in said space.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: February 4, 2014
    Assignee: Praxair Technology, Inc.
    Inventors: Kuang-Tsai Wu, Hisashi Kobayashi
  • Reducing crown corrosion in a glassmelting furnace
    Patent number: 8640499
    Abstract: Corrosion of the inner surface of the crown of a glassmelting furnace is reduced or avoided by directing at low velocity along that surface a gaseous stream comprising water vapor, or comprising the combustion products of an oxy-fuel burner operated at a stoichiometric ratio of at least 1.0, or the combustion products of a burner operated at a stoichiometric ratio less than 1.0, or by injecting into the furnace interior a gaseous reactant which reacts with alkali species in said space.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: February 4, 2014
    Assignee: Praxair Technology, Inc.
    Inventors: Kuang-Tsai Wu, Hisashi Kobayashi
  • Reduction of CO and NOin full burn regenerator flue gas
    Patent number: 8425870
    Abstract: A hot oxygen stream containing radicals is fed into a gas stream, such as a catalyst regenerator flue gas stream, that contains carbon monoxide to convert carbon monoxide to carbon dioxide.
    Type: Grant
    Filed: May 6, 2011
    Date of Patent: April 23, 2013
    Assignee: Praxair Technology, Inc.
    Inventors: Kuang-Tsai Wu, Lee Rosen, David Lenhert, Christopher Leger
  • COMBUSTION OF CO AND COMBUSTIBLES IN STEEL FURNACE OFFGASES
    Publication number: 20120213684
    Abstract: A hot oxygen stream containing radicals is fed into an offgas stream from a steelmaking vessel to convert carbon monoxide in the offgas to carbon dioxide.
    Type: Application
    Filed: April 27, 2012
    Publication date: August 23, 2012
    Inventors: Kuang Tsai Wu, Euan John Evenson
  • Method for preheating glassmaking materials
    Patent number: 8056366
    Abstract: Heat in a stream of combustion products obtained from a glassmelting furnace heated by oxy-fuel combustion is passed to incoming glassmaking materials in a heat exchanger without requiring reduction of the temperature of the stream yet without causing softening of the glassmaking material.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: November 15, 2011
    Assignee: Praxair Technology, Inc.
    Inventors: Hisashi Kobayashi, Kuang Tsai Wu