Patents by Inventor Mitsuru Udatsu

Mitsuru Udatsu 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: 10737213
    Abstract: In one embodiment, a carbon dioxide capturing system includes an absorber configured to include a first contact portion that brings a combustion exhaust gas containing carbon dioxide into contact with an absorbing liquid containing an amine compound, cause the absorbing liquid to absorb at least a portion of the carbon dioxide in the combustion exhaust gas at the first contact portion, and release the combustion exhaust gas. The system further includes a washing apparatus configured to include a second contact portion that brings the combustion exhaust gas released from the first contact portion of the absorber into contact with a washing liquid, and configured such that the combustion exhaust gas and the washing liquid are individually fed to an upstream side of the second contact portion.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: August 11, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Koshito Fujita, Tetsuya Kaseda, Mitsuru Udatsu, Hideo Kitamura
  • Patent number: 10722838
    Abstract: A carbon dioxide absorbent of an embodiment includes a solid resin compound containing a structural unit expressed by the following formula (1). X in the formula (1) is a halogen element.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: July 28, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Asato Kondo, Takashi Kuboki, Akiko Suzuki, Mitsuru Udatsu, Hiroko Watando
  • Patent number: 10625200
    Abstract: A carbon dioxide absorbent of an embodiment includes a chain amine, a cyclic amine, and an acid. The chain amine is a compound expressed by Formula (1) of FIG. 1. R1 in Formula (1) is hydrogen or an alkyl chain having at least one hydroxyl group and 1 to 7 carbon atoms. R2 in Formula (1) is an alkyl chain having at least one hydroxyl group and 1 to 7 carbon atoms. R3 in Formula (1) is hydrogen, a straight alkyl chain having 1 to 7 carbon atoms, a branched alkyl chain having 1 to 7 carbon atoms, or a cyclic alkyl chain having 5 to 7 carbon atoms.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: April 21, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Akiko Suzuki, Asato Kondo, Takashi Kuboki, Shinji Murai, Mitsuru Udatsu
  • Patent number: 10596514
    Abstract: An acid-gas capturing apparatus according to an embodiment includes an absorption unit configured to discharge an absorption-unit exhaust gas, and a regeneration unit configured to discharge a regeneration unit exhaust gas. The regeneration unit exhaust gas is compressed in a compression unit. The absorption-unit exhaust gas or the regeneration unit exhaust gas before it is compressed by the compression unit is cleaned in a first cleaning unit by means of a first cleaning liquid. A compression-condensate liquid, which is generated by the compression of the regeneration unit exhaust gas in the compression unit, is mixed into the first cleaning liquid through a first compression-condensate-liquid line whose one end is connected to the compression unit.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: March 24, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tetsuya Kaseda, Koshito Fujita, Mitsuru Udatsu
  • Publication number: 20200086266
    Abstract: The embodiments provide an acidic gas absorbent having low diffusibility, an acidic gas removal method, and an acidic gas removal apparatus. The acidic gas absorbent according to the embodiment comprises: an amine compound having a vapor pressure of 0.001 to 10 Pa at 20° C.; a water-soluble polymer compound having a mass-average molecular weight of 900 to 200000 and not containing a functional group having a pKa value greater than 7 except for hydroxy; and water.
    Type: Application
    Filed: March 8, 2019
    Publication date: March 19, 2020
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION
    Inventors: Akiko Suzuki, Yoshihiko Nakano, Reiko Yoshimura, Toshihiro Imada, Takashi Kuboki, Kenji Sano, Mitsuru Udatsu
  • Publication number: 20200086265
    Abstract: The embodiments provide an acidic gas absorbent, an acidic gas removal method, and an acidic gas removal apparatus. The absorbent absorbs an acidic gas in a large amount and hardly diffuses in air. The acidic gas absorbent according to the embodiment comprises an amine compound having a sulfonyl group and two or more amino groups.
    Type: Application
    Filed: March 8, 2019
    Publication date: March 19, 2020
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Energy Systems & Solutions Corporation
    Inventors: Yoshihiko Nakano, Akiko Suzuki, Takashi Kuboki, Toshihiro Imada, Shinji Murai, Reiko Yoshimura, Kenji Sano, Mitsuru Udatsu
  • Publication number: 20200047110
    Abstract: The embodiments provide an acidic gas absorbent, an acidic gas removal method using the absorbent, and an acidic gas removal apparatus using the absorbent. The absorbent absorbs an acidic gas in a large amount and is hardly diffused. The acidic gas absorbent according to the embodiment comprises an amine compound represented by the following formula (1): [In the formula, each R1 is independently hydrogen, an alkyl group, or a primary or secondary amino-containing aminoalkyl group provided that at least one of R1s is the aminoalkyl group, each R2 is independently hydrogen, an alkyl group, hydroxy, amino, hydroxyamino, or a primary or secondary amino-containing aminoalkyl group, the alkyl or aminoalkyl group contained in R1 or R2 has a straight-chain or branched-chain skeleton and may be substituted with hydroxy or carbonyl, and p is 2 to 4.
    Type: Application
    Filed: March 8, 2019
    Publication date: February 13, 2020
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION
    Inventors: Akiko SUZUKI, Yoshihiko NAKANO, Reiko YOSHIMURA, Toshihiro IMADA, Takashi KUBOKI, Kenji SANO, Shinji MURAI, Mitsuru UDATSU
  • Publication number: 20190358579
    Abstract: The embodiment provides an acidic gas absorbent. The acidic gas absorbent comprises an amine compound of the formula (1) and a cyclic amino compound of the formula (2) or (3): [In the formulas, each R1 is independently a straight-chain hydroxyalkyl having a hydroxy at the terminal; R2 is a branched-chain secondary alkyl group; R3 and R4 are hydrogen, hydroxy, a hydroxyalkyl or aminoalkyl, provided that at least one of R3 and R4s is a hydroxyalkyl or aminoalkyl; each p is independently an integer of 2 to 4; each R5 is independently hydrogen, hydroxy, or a hydroxyalkyl or aminoalkyl, provided that at least one of R5s is a hydroxyalkyl or aminoalkyl; and q is an integer of 3 to 8.] The acidic gas removal method and apparatus according to the embodiment uses the above acidic gas absorbent.
    Type: Application
    Filed: March 22, 2019
    Publication date: November 28, 2019
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION
    Inventors: Shinji MURAI, Yasuhiro KATO, Akiko SUZUKI, Mitsuru UDATSU
  • Publication number: 20190232215
    Abstract: A carbon dioxide capture system according to an embodiment includes a carbon dioxide capturer, a first washer, and a second washer. The first washer includes a spray configured to spray first cleaning liquid supplied under first pressure. The second washer includes a cleaning liquid diffuser configured to diffuse and drop second cleaning liquid supplied under second pressure lower than the first pressure.
    Type: Application
    Filed: January 28, 2019
    Publication date: August 1, 2019
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION
    Inventors: Koshito FUJITA, Hideo KITAMURA, Daigo MURAOKA, Mitsuru UDATSU, Yusuke HANDA, Tetsuya KASEDA, Yasuhiro KATO
  • Publication number: 20190160422
    Abstract: Disclosed herein are acid gas absorbents that afford high acid gas (CO2) absorption amount per unit volume and high absorption speed and can prevent the absorbent components from diffusing. Also disclosed herein is a method and device for removing an acid gas, in which the energy required for separating the acid gas and regenerating the absorbent is reduced, are provided.
    Type: Application
    Filed: November 27, 2018
    Publication date: May 30, 2019
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION
    Inventors: Shinji Murai, Yukishige Maezawa, Tetsuya Kaseda, Takehiko Muramatsu, Satoshi Saito, Mitsuru Udatsu, Daigo Muraoka, Masatoshi Hodotsuka
  • Publication number: 20190126192
    Abstract: A carbon dioxide capturing system according to an embodiment is provided with a reboiler which heats an absorption liquid in a regeneration tower with a heated steam, and condenses the heated steam to generate a downstream side condensed water. The heated steam is supplied to the reboiler by an upstream side line. The downstream side condensed water is discharged from the reboiler by a downstream side line. A branched line branches from the upstream side line. The heated steam supplied to the branched line is cooled and condensed by an upstream side cooler, and an upstream side condensed water is generated. A physical quantity of an absorption liquid component in the upstream side condensed water and a physical quantity of an absorption liquid component in the downstream side condensed water are measured by a physical quantity measurement device.
    Type: Application
    Filed: July 19, 2018
    Publication date: May 2, 2019
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Energy Systems & Solutions Corporation
    Inventors: Ryosuke SHIBATA, Hideo KITAMURA, Kiyohiko IWASA, Masatoshi HODOTSUKA, Mitsuru UDATSU
  • Publication number: 20190083922
    Abstract: A carbon dioxide absorbent of an embodiment includes a chain amine, a cyclic amine, and an acid. The chain amine is a compound expressed by Formula (1) of FIG. 1. R1 in Formula (1) is hydrogen or an alkyl chain having at least one hydroxyl group and 1 to 7 carbon atoms. R2 in Formula (1) is an alkyl chain having at least one hydroxyl group and 1 to 7 carbon atoms. R3 in Formula (1) is hydrogen, a straight alkyl chain having 1 to 7 carbon atoms, a branched alkyl chain having 1 to 7 carbon atoms, or a cyclic alkyl chain having 5 to 7 carbon atoms.
    Type: Application
    Filed: March 6, 2018
    Publication date: March 21, 2019
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Akiko SUZUKI, Asato Kondo, Takashi Kuboki, Shinji Murai, Mitsuru Udatsu
  • Publication number: 20190083921
    Abstract: A carbon dioxide absorbent of an embodiment includes a heterocyclic amine expressed by Formula (1), and the heterocyclic amine having a pKa of any one amino group included in a heterocyclic ring in Formula (1) in a range of 7.0 or more to 8.6 or less and an organic solvent having a boiling point of 150° C. or more at 1 atm. A total mass of the heterocyclic amine and the organic solvent is 70 mass % or more to 100 mass % or less of the carbon dioxide absorbent. Each of R1 to R4 in Formula (1) is H, oxygen double-bonded with carbon of the heterocyclic ring, CH3, OH, or an alkyl chain optionally including a functional group. X1 in Formula (1) is H, CH3, CO, C(O)OC2H5, C(O)OC3H7, C(O)OCH(CH3)2, C(O)OC(CH3)3, C(O)OCH3, C(O)CH3, or C(O)C2H5.
    Type: Application
    Filed: February 23, 2018
    Publication date: March 21, 2019
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Akiko Suzuki, Asato Kondo, Takashi Kuboki, Shinji Murai, Mitsuru Udatsu, Toshihiro Imada, Yoshihiko Nakano, Reiko Yoshimura
  • Patent number: 10173166
    Abstract: A method of operating a carbon dioxide recovering apparatus includes introducing flue gas into an absorbing tower, bringing the flue gas into contact with an absorbing solution, and discharging a first rich solution, which is then divided into second and third rich solutions. The second rich solution is heated using a lean solution from a releasing tower. The third rich solution is heated using steam from the releasing tower. The lean solution and the steam are generated in the releasing tower from the second and third rich solutions. The steam used to heat the third rich solution is separated, in a gas-liquid separator, into carbon dioxide and condensate water. The amount of condensate water formed in the gas-liquid separator is measured, and a flow dividing ratio between the second rich solution and the third rich solution is controlled based on a change in the amount of the condensate water.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: January 8, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Satoshi Saito, Hideo Kitamura, Mitsuru Udatsu, Toshihisa Kiyokuni
  • Publication number: 20180272267
    Abstract: A carbon dioxide absorbent of an embodiment includes a solid resin compound containing a structural unit expressed by the following formula (1). X in the formula (1) is a halogen element.
    Type: Application
    Filed: September 8, 2017
    Publication date: September 27, 2018
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Asato KONDO, Takashi KUBOKI, Akiko SUZUKI, Mitsuru UDATSU, Hiroko WATANDO
  • Patent number: 10005032
    Abstract: In one embodiment, a carbon dioxide recovery apparatus includes a heat exchanger which heats a first rich liquid, a flow divider which divides the first rich liquid heated by the heat exchanger into a second rich liquid and a third rich liquid, a first release device which heats the second rich liquid and discharges a first semi-lean liquid, a second release device which heats the third rich liquid and discharges a second semi-lean liquid, and a regeneration tower which heats the first and second semi-lean liquids to generate a lean liquid. The first release device heats the second rich liquid, using the lean liquid. The second release device heats the third rich liquid, using a carbon dioxide-containing steam discharged at the regeneration tower. The heat exchanger heats the first rich liquid, using the lean liquid which has passed through the first release device.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: June 26, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hideo Kitamura, Satoshi Saito, Mitsuru Udatsu
  • Patent number: 9950296
    Abstract: In a carbon dioxide separation and capture apparatus according to an embodiment, a control device calculates a flow rate range of a carbon dioxide gas based on the concentration of the carbon dioxide gas and an output range of a blower. The control device determines a flow rate of the carbon dioxide gas in which the sum of energy is the least based on relationships, corresponding to a preset target amount of carbon dioxide gas to be captured, between a flow rate of the carbon dioxide gas, and sum of energy obtained by summing the amount of heat to be supplied by a heating medium from the external, power of the blower and power of a pump. The control device controls output of the blower, an opening degree of the first flow rate control valve, and an opening degree of the second flow rate control valve.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: April 24, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Keita Nagano, Satoshi Saito, Masatoshi Hodotsuka, Mitsuru Udatsu
  • Patent number: 9901870
    Abstract: In one embodiment, a carbon dioxide capturing system includes an absorption tower configured to bring a treatment target gas containing carbon dioxide into contact with an absorption liquid, and to discharge the absorption liquid having absorbed the carbon dioxide. The system further includes a regeneration tower configured to make the absorption liquid discharged from the absorption tower dissipate the carbon dioxide, and to discharge the absorption liquid having dissipated the carbon dioxide. The system further includes a treatment target gas line configured to introduce the treatment target gas into the absorption tower, a first introduction module configured to introduce a first gas having a higher carbon dioxide concentration than the treatment target gas into the treatment target gas line, and a second introduction module configured to introduce a second gas having a lower carbon dioxide concentration than the treatment target gas into the treatment target gas line.
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: February 27, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Mitsuru Udatsu, Masatoshi Hodotsuka, Hideo Kitamura, Satoshi Saito, Haruki Fujimoto, Noriko Chiba
  • Publication number: 20180001254
    Abstract: In one embodiment, a carbon dioxide capturing system includes an absorber configured to include a first contact portion that brings a combustion exhaust gas containing carbon dioxide into contact with an absorbing liquid containing an amine compound, cause the absorbing liquid to absorb at least a portion of the carbon dioxide in the combustion exhaust gas at the first contact portion, and release the combustion exhaust gas. The system further includes a washing apparatus configured to include a second contact portion that brings the combustion exhaust gas released from the first contact portion of the absorber into contact with a washing liquid, and configured such that the combustion exhaust gas and the washing liquid are individually fed to an upstream side of the second contact portion.
    Type: Application
    Filed: June 5, 2017
    Publication date: January 4, 2018
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Koshito FUJITA, Tetsuya KASEDA, Mitsuru UDATSU, Hideo KITAMURA
  • Publication number: 20180001253
    Abstract: An acid-gas capturing apparatus according to an embodiment includes an absorption unit configured to discharge an absorption-unit exhaust gas, and a regeneration unit configured to discharge a regeneration unit exhaust gas. The regeneration unit exhaust gas is compressed in a compression unit. The absorption-unit exhaust gas or the regeneration unit exhaust gas before it is compressed by the compression unit is cleaned in a first cleaning unit by means of a first cleaning liquid. A compression-condensate liquid, which is generated by the compression of the regeneration unit exhaust gas in the compression unit, is mixed into the first cleaning liquid through a first compression-condensate-liquid line whose one end is connected to the compression unit.
    Type: Application
    Filed: June 27, 2017
    Publication date: January 4, 2018
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tetsuya KASEDA, Koshito FUJITA, Mitsuru UDATSU