Patents by Inventor Kenji Arisaki

Kenji Arisaki 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).

  • Pyrolysis furnace for olefin production
    Patent number: 5181990
    Abstract: A pyrolysis furnace for cracking hydrocarbons comprising a furnace; a pair of inlet tubes extending generally vertically within the furnace and connected to an outlet tube having a larger diameter than either of the inlet tubes and extending generally vertically within the furnace to an outlet; and burners for imparting radiant heat adjacent to the inlet tubes and adjacent to the outlet tube. The inlet tubes and the outlet tube define a single pass configuration through the furnace.
    Type: Grant
    Filed: May 16, 1991
    Date of Patent: January 26, 1993
    Assignee: Babcock-Hitachi Kabushiki Kaisha
    Inventors: Kenji Arisaki, Hisashi Morimoto
  • Heat recovery process in coal gasification
    Patent number: 4464183
    Abstract: An overall process of cooling, dust removal, tar removal and heat recovery of high temperature gas generated in coal gasification furnaces, and apparatuses employed therefor are provided. In this process, specific apparatuses such as fluidized bed-cooler, fluidized bed-combustion furnace for regenerating granules, granular bed filter, gas cooler and, tar scrubber are successively and effectively employed. During the process, high, medium and low pressure steam, for example, are recovered by heat exchange in these apparatuses.
    Type: Grant
    Filed: May 9, 1983
    Date of Patent: August 7, 1984
    Assignee: Babcock-Hitachi, Ltd.
    Inventor: Kenji Arisaki
  • Heat recovery process in coal gasification
    Patent number: 4461629
    Abstract: An overall process of cooling, dust removal, tar removal and heat recovery of high temperature gas generated in coal gasification furnaces, and apparatuses employed therefor are provided. In this process, specific apparatuses such as fluidized bed-cooler, fluidized bed-combustion furnace for regenerating granules, granular bed filter, gas cooler, and tar scrubber are successively and effectively employed. During the process, high, medium and low pressure steam, for example, are recovered by heat exchange in these apparatuses.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: July 24, 1984
    Assignee: Babcock-Hitachi, Ltd.
    Inventor: Kenji Arisaki
  • Apparatus for regenerating fluidizing medium
    Patent number: 4281605
    Abstract: This invention relates to an apparatus of regenerating fluidizing medium employed in a fluidized-bed incinerator, wherein the sticking matter attached to the fluidizing medium employed in the incinerator in the process of burning up in the incinerator the ash collected from power plant boiler exhaust gases (EP ash) is removed from the fluidizing medium chemically and physically.
    Type: Grant
    Filed: September 4, 1979
    Date of Patent: August 4, 1981
    Assignee: Babcock-Hitachi Kabushiki Kaisha
    Inventors: Toshio Uemura, Hiroshi Kagabu, Kenji Arisaki, Noboru Kajimoto, Shinshi Akatsuka, Takuaki Fujimoto