Patents by Inventor Shinji Sekikawa

Shinji Sekikawa 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: 7618469
    Abstract: The present invention provides a fuel gasification furnace including a gasification chamber (1) for fluidizing a high-temperature fluidizing medium therein to form a gasification chamber fluidized bed having an interface, and for gasifying a fuel in the gasification chamber fluidized bed, a char combustion chamber (2) for fluidizing a high-temperature fluidizing medium therein to form a char combustion chamber fluidized bed having an interface, and for combusting char generated by gasification in the gasification chamber (1) in the char combustion chamber fluidized bed to heat the fluidizing medium, and a first energy recovery device (109) for using gases generated by the gasification chamber (1) as a fuel. The gasification chamber (1) and the char combustion chamber (2) are integrated with each other.
    Type: Grant
    Filed: May 13, 2008
    Date of Patent: November 17, 2009
    Assignee: Ebara Corporation
    Inventors: Norihisa Miyoshi, Seiichiro Toyoda, Shugo Hosoda, Nobutaka Kashima, Katsutoshi Naruse, Katsuyuki Aoki, Shinji Sekikawa, Shuichi Nagato, Hiroshi Hashimoto
  • Publication number: 20080263952
    Abstract: The present invention provides a fuel gasification furnace including a gasification chamber (1) for fluidizing a high-temperature fluidizing medium therein to form a gasification chamber fluidized bed having an interface, and for gasifying a fuel in the gasification chamber fluidized bed, a char combustion chamber (2) for fluidizing a high-temperature fluidizing medium therein to form a char combustion chamber fluidized bed having an interface, and for combusting char generated by gasification in the gasification chamber (1) in the char combustion chamber fluidized bed to heat the fluidizing medium, and a first energy recovery device (109) for using gases generated by the gasification chamber (1) as a fuel. The gasification chamber (1) and the char combustion chamber (2) are integrated with each other.
    Type: Application
    Filed: May 13, 2008
    Publication date: October 30, 2008
    Inventors: Norihisa Miyoshi, Seiichiro Toyoda, Shugo Hosoda, Nobutaka Kashima, Katsutoshi Naruse, Katsuyuki Aoki, Shinji Sekikawa, Shuichi Nagato, Hiroshi Hashimoto
  • Patent number: 7390337
    Abstract: The present invention provides a fuel gasification furnace including a gasification chamber (1) for fluidizing a high-temperature fluidizing medium therein to form a gasification chamber fluidized bed having an interface, and for gasifying a fuel in the gasification chamber fluidized bed, a char combustion chamber (2) for fluidizing a high-temperature fluidizing medium therein to form a char combustion chamber fluidized bed having an interface, and for combusting char generated by gasification in the gasification chamber (1) in the char combustion chamber fluidized bed to heat the fluidizing medium, and a first energy recovery device (109) for using gases generated by the gasification chamber (1) as a fuel. The gasification chamber (1) and the char combustion chamber (2) are integrated with each other.
    Type: Grant
    Filed: March 8, 2005
    Date of Patent: June 24, 2008
    Assignee: Ebara Corporation
    Inventors: Norihisa Miyoshi, Seiichiro Toyoda, Shugo Hosoda, Nobutaka Kashima, Katsutoshi Naruse, Katsuyuki Aoki, Shinji Sekikawa, Shuichi Nagato, Hiroshi Hashimoto
  • Publication number: 20070012230
    Abstract: A gasification furnace has a gasification chamber for pyrolyzing a raw material in a fluidized medium being fluidized therein to produce a pyrolysis gas and a pyrolysis residue. The gasification furnace also has a combustion chamber for receiving the pyrolysis residue together with the fluidized medium, combusting the pyrolysis residue in the fluidized medium being fluidized therein to heat the fluidized medium, and returning the fluidized medium to the gasification chamber. The gasification furnace includes a partition wall for separating the gasification chamber and the combustion chamber from each other. The partition wall includes a first steel plate having a cooling structure to prevent the pyrolysis gas from flowing between the gasification chamber and the combustion chamber. The gasification furnace allows a general material to be used for components therein and have a long repair period.
    Type: Application
    Filed: July 12, 2005
    Publication date: January 18, 2007
    Inventors: Hiroshi Hashimoto, Shinji Sekikawa, Tatsuya Hasegawa, Fumiaki Morozumi
  • Patent number: 6949224
    Abstract: The present invention provides a fuel gasification furnace including a gasification chamber (1) for fluidizing a high-temperature fluidizing medium therein to form a gasification chamber fluidized bed having an interface, and for gasifying a fuel in the gasification chamber fluidized bed, a char combustion chamber (2) for fluidizing a high-temperature fluidizing medium therein to form a char combustion chamber fluidized bed having an interface, and for combusting char generated by gasification in the gasification chamber (1) in the char combustion chamber fluidized bed to heat the fluidizing medium, and a first energy recovery device (109) for using gases generated by the gasification chamber (1) as a fuel. The gasification chamber (1) and the char combustion chamber (2) are integrated with each other.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: September 27, 2005
    Assignee: Ebara Corporation
    Inventors: Norihisa Miyoshi, Seiichiro Toyoda, Shugo Hosoda, Nobutaka Kashima, Katsutoshi Naruse, Katsuyuki Aoki, Shinji Sekikawa, Shuichi Nagato, Hiroshi Hashimoto
  • Publication number: 20050144844
    Abstract: The present invention provides a fuel gasification furnace including a gasification chamber (1) for fluidizing a high-temperature fluidizing medium therein to form a gasification chamber fluidized bed having an interface, and for gasifying a fuel in the gasification chamber fluidized bed, a char combustion chamber (2) for fluidizing a high-temperature fluidizing medium therein to form a char combustion chamber fluidized bed having an interface, and for combusting char generated by gasification in the gasification chamber (1) in the char combustion chamber fluidized bed to heat the fluidizing medium, and a first energy recovery device (109) for using gases generated by the gasification chamber (1) as a fuel. The gasification chamber (1) and the char combustion chamber (2) are integrated with each other.
    Type: Application
    Filed: March 8, 2005
    Publication date: July 7, 2005
    Inventors: Norihisa Miyoshi, Seiichiro Toyoda, Shugo Hosoda, Nobutaka Kashima, Katsutoshi Naruse, Katsuyuki Aoki, Shinji Sekikawa, Shuichi Nagato, Hiroshi Hashimoto