Patents by Inventor Takehiro Nakasuji

Takehiro Nakasuji 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: 12157718
    Abstract: A source material gas (31) is supplied to a catalyst (30), a first heating medium (21) is caused to flow through a first heat exchange section (22) so that a temperature of a surface of the first heat exchange section (22) on a catalyst side is maintained higher than a dew point of a reacted gas (32), a second heating medium (51) is caused to flow through a second heat exchange section (52) so that a temperature of a surface of the second heat exchange section (52) on a space (4) side is maintained not higher than the dew point of the reacted gas (32), and a liquid obtained by condensation in the space (4) is allowed to fall down so as to be separated from the source material gas.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: December 3, 2024
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Tetsuya Suzuta, Masato Matsuda, Takehiro Nakasuji, Yuichi Sato
  • Publication number: 20240391852
    Abstract: To enable highly efficient production of an olefin with a low environmental impact. The production includes a thermal cracking step of thermal cracking plastic to obtain a thermally cracked gas (G1) and a catalytic cracking step of cracking the thermally cracked gas (G1) in the presence of a catalyst to obtain a catalytically cracked gas (G2). When a ratio of an olefin to paraffin in the thermally cracked gas (G1) is indicated as R1 and a ratio of an olefin to paraffin in the catalytically cracked gas (G2) is indicated as R2, the following formula is satisfied: R2/R1 ?1.
    Type: Application
    Filed: September 7, 2022
    Publication date: November 28, 2024
    Applicants: MURORAN INSTITUTE OF TECHNOLOGY, SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Yasuharu KANDA, Yoshio UEMICHI, Nozomi ISHIHARA, Takehiro NAKASUJI
  • Publication number: 20240286080
    Abstract: A membrane separation method where a reverse osmosis method can be applied as a method for separating or concentrating a to-be-treated liquid having a high osmotic pressure or as a water recovery method. The membrane separation method for a to-be-treated liquid having an osmotic pressure includes a first step of separating the to-be-treated liquid into a first permeate and a first retentate by a reverse osmosis method using a loose RO membrane (50). The to-be-treated liquid satisfies ?Cb?>?Pmax when an osmotic pressure of a to-be-treated liquid side membrane surface concentration Cb? is represented by ?Cb? and a maximum operating pressure difference is represented by ?Pmax, or has an osmotic pressure of 5 MPa or more and 100 MPa or less. The loose RO membrane (50) is a membrane through which at least a part of a solute contained in the to-be-treated liquid passes together with a solvent.
    Type: Application
    Filed: June 8, 2022
    Publication date: August 29, 2024
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Takehiro NAKASUJI, Naoki YOKOKAWA, Masahiro KINOSHITA, Shinichi NAKAO
  • Publication number: 20230312444
    Abstract: This method includes a gas acquisition step (S1) of obtaining a gas containing a carbon oxide and hydrogen from a waste material from which methanol is to be produced and a conversion step (S6) of bringing at least a portion of the gas into contact with a catalyst to convert the portion of the gas into methanol in a gas phase, in which, in the conversion step (S6), the reaction is allowed to proceed by condensing a high-boiling-point component containing methanol obtained as the result of the conversion and water and then discharging the condensed product to the outside of a reaction system.
    Type: Application
    Filed: August 30, 2021
    Publication date: October 5, 2023
    Inventors: Masato MATSUDA, Tetsuya SUZUTA, Takehiro NAKASUJI, Yuichi SATO
  • Publication number: 20230311092
    Abstract: In a chemical reaction device that improves a yield of a product and that causes a reaction, progress of which in a gaseous phase is restricted by a chemical equilibrium between a source material and the product, a cumulative value is not less than 500 mm2, the cumulative value being obtained by cumulatively adding, from one end to the other end of a cooling surface in a height direction, products of (i) a distance L between (a) a surface of a catalyst layer which surface is in contact with a transmission wall and (b) an outer surface of the cooling surface and (ii) a height H of the catalyst layer corresponding to the outer surface having the distance L.
    Type: Application
    Filed: August 30, 2021
    Publication date: October 5, 2023
    Inventors: Takehiro NAKASUJI, Tetsuya SUZUTA, Masato MATSUDA, Yuichi SATO
  • Patent number: 11534722
    Abstract: A gas separation apparatus includes a separation membrane module including at least one gas separation membrane element in a housing, a casing for blocking external air, and a heat source unit for adjusting a temperature of a heat medium with which the casing is filled. The casing holds greater than or equal to two separation membrane modules.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: December 27, 2022
    Assignees: SUMITOMO CHEMICAL COMPANY, LIMITED, RENAISSANCE ENERGY RESEARCH CORPORATION
    Inventors: Nobutaka Kodama, Takehiro Nakasuji, Osamu Okada, Masaaki Teramoto, Nobuaki Hanai
  • Publication number: 20220363617
    Abstract: A source material gas (31) is supplied to a catalyst (30), a first heating medium (21) is caused to flow through a first heat exchange section (22) so that a temperature of a surface of the first heat exchange section (22) on a catalyst side is maintained higher than a dew point of a reacted gas (32), a second heating medium (51) is caused to flow through a second heat exchange section (52) so that a temperature of a surface of the second heat exchange section (52) on a space (4) side is maintained not higher than the dew point of the reacted gas (32), and a liquid obtained by condensation in the space (4) is allowed to fall down so as to be separated from the source material gas.
    Type: Application
    Filed: September 17, 2020
    Publication date: November 17, 2022
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Tetsuya SUZUTA, Masato MATSUDA, Takehiro NAKASUJI, Yuichi SATO
  • Publication number: 20220340521
    Abstract: The present specification discloses a method of producing a concentrated carbonate aqueous solution. The present invention relates to a method for producing a concentrated carbonate aqueous solution, comprising a step of dewatering a hydrogen carbonate aqueous solution by means of a salt blocking membrane to prepare a concentrated hydrogen carbonate aqueous solution, wherein the concentrated hydrogen carbonate aqueous solution obtained in the above step is heated to thermally decompose the hydrogen carbonate into carbonate, carbon dioxide and water, and to evaporate water to obtain a concentrate of the carbonate aqueous solution.
    Type: Application
    Filed: September 11, 2020
    Publication date: October 27, 2022
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Takehiro NAKASUJI, Tetsuya SUZUTA, Masato MATSUDA, Yuichi SATO, Shinichi NAKAO
  • Publication number: 20200376438
    Abstract: A gas separation apparatus includes a separation membrane module including at least one gas separation membrane element in a housing, a casing for blocking external air, and a heat source unit for adjusting a temperature of a heat medium with which the casing is filled. The casing holds greater than or equal to two separation membrane modules.
    Type: Application
    Filed: October 25, 2018
    Publication date: December 3, 2020
    Inventors: Nobutaka KODAMA, Takehiro NAKASUJI, Osamu OKADA, Masaaki TERAMOTO, Nobuaki HANAI
  • Patent number: 10441917
    Abstract: Provided is a method for separating, from a raw gas containing a specific gas, the specific gas using a gas separation membrane module. The gas separation membrane module includes a housing and a gas separation membrane element enclosed in the housing. The gas separation membrane element includes a gas separation membrane including a hydrophilic resin composition layer for selectively allowing for permeation of the specific gas. The method includes the steps of: increasing pressure in an interior of the gas separation membrane module; increasing a temperature in the interior of the gas separation membrane module; and feeding a raw gas to the interior of the gas separation membrane module in that order.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: October 15, 2019
    Assignees: SUMITOMO CHEMICAL COMPANY, LIMITED, RENAISSANCE ENERGY RESEARCH CORPORATION
    Inventors: Takenori Kitaura, Hisaaki Miyamoto, Yudai Ota, Takehiro Nakasuji, Osamu Okada, Masaaki Teramoto
  • Patent number: 10315156
    Abstract: Provided is a method for separating a specific gas from a raw gas using a gas separation membrane module that includes a gas separation membrane element enclosed in a housing. The element includes a gas separation membrane including a hydrophilic resin composition layer. The method includes: preparing the module; increasing pressure in an interior of the module; increasing a temperature in the interior; and feeding a raw gas to the interior. The layer of the module prepared is adjusted to contain moisture, and a moisture content thereof is an amount that allows an equilibrium relative humidity at a temperature of 23° C. of a gas phase portion in the housing to be 10% RH or more. The raw gas feeding step is performed after the preparation step. The pressure increase step and the temperature increase step are performed after the preparation step and before the raw gas feeding step.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: June 11, 2019
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Takenori Kitaura, Hisaaki Miyamoto, Yudai Ota, Takehiro Nakasuji
  • Publication number: 20190083925
    Abstract: Provided is a method for separating a specific gas from a raw gas using a gas separation membrane module that includes a gas separation membrane element enclosed in a housing. The element includes a gas separation membrane including a hydrophilic resin composition layer. The method includes: preparing the module; increasing pressure in an interior of the module; increasing a temperature in the interior; and feeding a raw gas to the interior. The layer of the module prepared is adjusted to contain moisture, and a moisture content thereof is an amount that allows an equilibrium relative humidity at a temperature of 23° C. of a gas phase portion in the housing to be 10% RH or more. The raw gas feeding step is performed after the preparation step. The pressure increase step and the temperature increase step are performed after the preparation step and before the raw gas feeding step.
    Type: Application
    Filed: September 13, 2018
    Publication date: March 21, 2019
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Takenori KITAURA, Hisaaki MIYAMOTO, Yudai OTA, Takehiro NAKASUJI
  • Publication number: 20190083926
    Abstract: Provided is a method for separating, from a raw gas containing a specific gas, the specific gas using a gas separation membrane module. The gas separation membrane module includes a housing and a gas separation membrane element enclosed in the housing. The gas separation membrane element includes a gas separation membrane including a hydrophilic resin composition layer for selectively allowing for permeation of the specific gas. The method includes the steps of: increasing pressure in an interior of the gas separation membrane module; increasing a temperature in the interior of the gas separation membrane module; and feeding a raw gas to the interior of the gas separation membrane module in that order.
    Type: Application
    Filed: September 13, 2018
    Publication date: March 21, 2019
    Applicants: SUMITOMO CHEMICAL COMPANY, LIMITED, RENAISSANCE ENERGY RESEARCH CORPORATION
    Inventors: Takenori KITAURA, Hisaaki MIYAMOTO, Yudai OTA, Takehiro NAKASUJI, Osamu OKADA, Masaaki TERAMOTO
  • Patent number: 9833746
    Abstract: Provided is a facilitated CO2 transport membrane having improved CO2 permeance and improved CO2 selective permeability. The facilitated CO2 transport membrane includes a separation-functional membrane comprising a hydrophilic polymer gel membrane which contains a CO2 carrier and a CO2 hydration catalyst, wherein the hydrophilic polymer is a copolymer including a first structural unit derived from an acrylic acid cesium salt or an acrylic acid rubidium salt and a second structural unit derived from vinyl alcohol. More preferably, the CO2 hydration catalyst has catalytic activity at a temperature of 100° C. or higher.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: December 5, 2017
    Assignees: Renaissance Energy Research Corporation, Sumitomo Chemical Company, Limited
    Inventors: Osamu Okada, Nobuaki Hanai, Peng Yan, Junya Miyata, Takehiro Nakasuji, Hayato Sugiyama
  • Patent number: 9724652
    Abstract: The present invention relates to a copolymer containing a constitutional unit derived from acrylic acid cesium salt or acrylic acid rubidium salt and a constitutional unit derived from vinyl alcohol, a resin composition containing the copolymer, a carbon dioxide gas separation membrane which can be manufactured with the resin composition, a carbon dioxide gas separation membrane module having the separation membrane, and a carbon dioxide gas separation apparatus including at least one type of the module.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: August 8, 2017
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Kenichi Hirose, Hayato Sugiyama, Takehiro Nakasuji, Shinichi Furukawa
  • Publication number: 20160051938
    Abstract: Provided is a facilitated CO2 transport membrane having improved CO2 permeance and improved CO2 selective permeability. The facilitated CO2 transport membrane includes a separation-functional membrane comprising a hydrophilic polymer gel membrane which contains a CO2 carrier and a CO2 hydration catalyst, wherein the hydrophilic polymer is a copolymer including a first structural unit derived from an acrylic acid cesium salt or an acrylic acid rubidium salt and a second structural unit derived from vinyl alcohol. More preferably, the CO2 hydration catalyst has catalytic activity at a temperature of 100° C. or higher.
    Type: Application
    Filed: March 24, 2014
    Publication date: February 25, 2016
    Applicants: Sumimoto Chemical Company, Limited, Renaissance Energy Research Corporation
    Inventors: Osamu Okada, Nobuaki Hanai, Peng Yan, Junya Miyata, Takehiro Nakasuji, Hayato Sugiyama
  • Publication number: 20150283518
    Abstract: The present invention relates to a copolymer containing a constitutional unit derived from acrylic acid cesium salt or acrylic acid rubidium salt and a constitutional unit derived from vinyl alcohol, a resin composition containing the copolymer, a carbon dioxide gas separation membrane which can be manufactured with the resin composition, a carbon dioxide gas separation membrane module having the separation membrane, and a carbon dioxide gas separation apparatus including at least one type of the module.
    Type: Application
    Filed: October 18, 2013
    Publication date: October 8, 2015
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Kenichi Hirose, Hayato Sugiyama, Takehiro Nakasuji, Shinichi Furukawa
  • Publication number: 20110319659
    Abstract: A method for producing methionine includes a hydrolyzing step of hydrolyzing 5-(?-methylmercaptoethyl)hydantoin, and a crystallizing step of crystallizing with carbon dioxide introduced into a reaction solution after hydrolysis, to obtain methionine. In the crystallizing step, as carbon dioxide introduced into the hydrolysis reaction solution, carbon dioxide that is separated in a carbon dioxide separation section from a reformed gas formed by steam reforming reaction in a steam reformation section and carbon dioxide that is separated in an exhaust gas separation section from a combustion exhaust gas generated by pure oxygen combustion in a hydrocarbon heating furnace and a reformation reaction heating furnace are used.
    Type: Application
    Filed: June 28, 2011
    Publication date: December 29, 2011
    Inventors: Motonobu YOSHIKAWA, Takehiro Nakasuji