Patents by Inventor Kentaro Nariai

Kentaro Nariai 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: 11795121
    Abstract: A hydrocarbon generation system includes a first generation apparatus configured to generate a hydrocarbon with two or more carbon atoms from a first raw material containing: at least one of carbon monoxide or carbon dioxide; and hydrogen. The hydrocarbon generation system includes a second generation apparatus configured to generate methane from a second raw material including: hydrogen; and at least one of carbon monoxide or carbon dioxide contained in the first raw material and discharged from the first generation apparatus.
    Type: Grant
    Filed: July 5, 2022
    Date of Patent: October 24, 2023
    Assignee: IHI CORPORATION
    Inventors: Hiroyuki Kamata, Wonyoung Choi, Toshiyuki Suda, Kentaro Nariai
  • Publication number: 20220332663
    Abstract: A hydrocarbon generation system includes a first generation apparatus configured to generate a hydrocarbon with two or more carbon atoms from a first raw material containing: at least one of carbon monoxide or carbon dioxide; and hydrogen. The hydrocarbon generation system includes a second generation apparatus configured to generate methane from a second raw material including: hydrogen; and at least one of carbon monoxide or carbon dioxide contained in the first raw material and discharged from the first generation apparatus.
    Type: Application
    Filed: July 5, 2022
    Publication date: October 20, 2022
    Applicant: IHI CORPORATION
    Inventors: Hiroyuki KAMATA, Wonyoung CHOI, Toshiyuki SUDA, Kentaro NARIAI
  • Patent number: 10967382
    Abstract: A vertical roller mill includes a housing, a chute that supplies materials to be grinded to a center portion of the housing, a grinder that is provided below the chute and grinds the materials to be grinded, an exhaust pipe that is provided above the grinder, a transport mechanism that forms an air flow for transporting, to the exhaust pipe, grinded materials grinded by the grinder, and a flow-constricting flow path provided between the grinder and the exhaust pipe and narrows a flow path area for the air flow, in which the flow-constricting flow path is formed between a first flow-constricting ring provided in the center portion of the housing and a second flow-constricting ring provided to protrude from the housing toward the center portion of the housing.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: April 6, 2021
    Assignee: IHI Corporation
    Inventors: Kentaro Nariai, Emi Ohno, Kazuhiro Watanabe, Takahiro Kozaki, Akira Kobayashi
  • Publication number: 20190143338
    Abstract: A vertical roller mill includes a housing, a chute that supplies materials to be grinded to a center portion of the housing, a grinder that is provided below the chute and grinds the materials to be grinded, an exhaust pipe that is provided above the grinder, a transport mechanism that forms an air flow for transporting, to the exhaust pipe, grinded materials grinded by the grinder, and a flow-constricting flow path provided between the grinder and the exhaust pipe and narrows a flow path area for the air flow, in which the flow-constricting flow path is formed between a first flow-constricting ring provided in the center portion of the housing and a second flow-constricting ring provided to protrude from the housing toward the center portion of the housing.
    Type: Application
    Filed: January 17, 2019
    Publication date: May 16, 2019
    Applicant: IHI Corporation
    Inventors: Kentaro NARIAI, Emi Ohno, Kazuhiro Watanabe, Takahiro Kozaki, Akira Kobayashi
  • Publication number: 20130288311
    Abstract: A fermentation apparatus (A) of the present invention comprising: an enzymatic reactor (4) for degrading cellulose using a diastatic enzyme, and a first catalytic reactor (5) for degrading the degradation product produced by the enzymatic reactor (4) into glucose, using a solid acid catalyst (X). According to this fermentation apparatus (A), saccharification treatment of cellulose can be performed while reducing diastatic enzyme costs.
    Type: Application
    Filed: September 27, 2011
    Publication date: October 31, 2013
    Inventors: Kenji Sato, Makoto Kitano, Tatsuya Oka, Kentaro Nariai, Norimitsu Kaneko, Michikazu Hara
  • Publication number: 20120288927
    Abstract: A biomass treatment device (A) includes a hot compressed water reaction device (1) that hydrolyzes a biomass by passing hot compressed water to the biomass to prepare polysaccharides, and a solid-acid catalytic reaction device (2 and 3) that generates monosaccharides from the polysaccharides using a solid-acid catalyst, and the device includes at least one of a first heat exchanger (1b and 1b?) for heating the hot compressed water by the heat of a monosaccharide solution including the monosaccharides delivered from the solid-acid-catalytic reaction device and a second heat exchanger (1c) for heating the hot compressed water by the heat of a polysaccharide solution including the polysaccharides introduced into the solid-acid-catalytic reaction device from the hot compressed water reaction device. According to the biomass treatment device, it is possible to improve the energy efficiency more than the related art.
    Type: Application
    Filed: January 18, 2011
    Publication date: November 15, 2012
    Inventors: Norimitsu Kaneko, Makoto Kitano, Kenji Sato, Kentaro Nariai, Michikazu Hara, Daizo Yamaguchi
  • Publication number: 20120279495
    Abstract: A solid-acid-catalyzed saccharification device (A) includes a catalytic reaction vessel (3) configured to contain a polysaccharide feedstock with water and a solid-acid catalyst (X2) as a liquid mixture (X3) to monosaccharify the polysaccharide using the solid-acid catalyst (X2), an agitation device (4) configured to agitate the liquid mixture (X3) in the catalytic reaction vessel (3), an oxidation-reduction electrometer (5) configured to measure the redox potential of the liquid mixture (X3) in the catalytic reaction vessel (3), and a pH meter (6) configured to measure the pH of the liquid mixture (X3) in the catalytic reaction vessel (3). According to the solid-acid-catalyzed saccharification device (A), it is possible to accurately follow the reaction state of a saccharification process of a feedstock using a solid acid catalyst.
    Type: Application
    Filed: January 18, 2011
    Publication date: November 8, 2012
    Inventors: Makoto Kitano, Kenji Sato, Kentaro Nariai, Tatsuya Oka, Michikazu Hara, Daizo Yamaguchi
  • Publication number: 20120279494
    Abstract: The hot water-flowing type saccharification apparatus (A) which hydrolyzes a raw material organic substance (X) stored in a reaction pipe (1) by passing pressurized hot water therethrough, includes a raw material hopper (4) which stores the raw material organic substance (X), a raw material-feeding pipe (3) which receives the raw material organic substance (X) dropped from the raw material hopper (4) and communicates with the reaction pipe (1), a raw material transfer unit (5) which transfers the raw material organic substance (X) to the reaction pipe (1) by extruding the raw material organic substance (X) from one end of the raw material-feeding pipe (3) toward the reaction pipe (1), a shutoff valve (2) provided between the raw material-feeding pipe (3) and the reaction pipe (1), a residue discharge unit (6) provided in the reaction pipe (1) on an opposite side to the raw material-feeding pipe (3) so as to discharge a residue (Xa) outside, a pressurized hot water supply unit (7) which supplies pressurized ho
    Type: Application
    Filed: January 18, 2011
    Publication date: November 8, 2012
    Inventors: Makoto Kitano, Kenji Sato, Kentaro Nariai, Tatsuya Oka
  • Publication number: 20120232264
    Abstract: A biomass treatment apparatus (A) is constituted by a pressurized hot water reaction apparatus (1) in which pressurized hot water is used, biomass is hydrolyzed under first reaction conditions that provide for decomposition of hemicellulose so as to generate a first polysaccharide solution including xylooligosaccharides, and then the biomass is hydrolyzed under second reaction conditions that provide for decomposition of cellulose to generate a second polysaccharide solution including cellooligosaccharides, a first catalysis apparatus (2) in which the first polysaccharide solution that flows out from the pressurized hot water reaction apparatus (1) is hydrolyzed using a solid acid catalyst so as to generate a first monosaccharide solution including xylose, and a second catalysis apparatus (3) in which the second polysaccharide solution that flows out from the pressurized hot water reaction apparatus (1) is hydrolyzed using a solid acid catalyst so as to generate a second monosaccharide solution including gluc
    Type: Application
    Filed: September 24, 2010
    Publication date: September 13, 2012
    Inventors: Kenji Sato, Kentaro Nariai, Makoto Kitano, Norimitsu Kaneko, Michikazu Hara, Daizo Yamaguchi