Patents by Inventor Tetsuya KASEDA
Tetsuya KASEDA 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).
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Patent number: 11278842Abstract: 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.Type: GrantFiled: August 20, 2020Date of Patent: March 22, 2022Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Shinji Murai, Yukishige Maezawa, Tetsuya Kaseda, Takehiko Muramatsu, Satoshi Saito, Mitsuru Udatsu, Daigo Muraoka, Masatoshi Hodotsuka
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Patent number: 11235277Abstract: 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: GrantFiled: January 28, 2019Date of Patent: February 1, 2022Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Koshito Fujita, Hideo Kitamura, Daigo Muraoka, Mitsuru Udatsu, Yusuke Handa, Tetsuya Kaseda, Yasuhiro Kato
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Patent number: 11014046Abstract: An acid component removal device for removing an acid component from an acid gas absorbent containing an amine, comprising: an anode; a cathode; and an electrodialysis structure having four compartments formed by arranging an first membrane which is either an anion exchange membrane or a cation exchange membrane, a second membrane which is a bipolar membrane, and a third membrane which is either an anion exchange membrane or a cation exchange membrane and which is the other of the first membrane, in this order, from the anode end to the cathode end between the anode and the cathode, with a space each between the membranes.Type: GrantFiled: December 21, 2018Date of Patent: May 25, 2021Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Yasuhiro Kato, Masatoshi Hodotsuka, Tetsuya Kaseda
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Publication number: 20200376428Abstract: 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.Type: ApplicationFiled: August 20, 2020Publication date: December 3, 2020Applicants: KABUSHIKI KASSHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Shinji MURAI, Yukishige MAEZAWA, Tetsuya KASEDA, Takehiko MURAMATSU, Satoshi SAITO, Mitsuru UDATSU, Daigo MURAOKA, Masatoshi HGDOTSUKA
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Patent number: 10850227Abstract: 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: GrantFiled: November 27, 2018Date of Patent: December 1, 2020Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Shinji Murai, Yukishige Maezawa, Tetsuya Kaseda, Takehiko Muramatsu, Satoshi Saito, Mitsuru Udatsu, Daigo Muraoka, Masatoshi Hodotsuka
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Patent number: 10737213Abstract: 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: GrantFiled: June 5, 2017Date of Patent: August 11, 2020Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Koshito Fujita, Tetsuya Kaseda, Mitsuru Udatsu, Hideo Kitamura
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Patent number: 10596514Abstract: 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: GrantFiled: June 27, 2017Date of Patent: March 24, 2020Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Tetsuya Kaseda, Koshito Fujita, Mitsuru Udatsu
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Publication number: 20190232215Abstract: 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: ApplicationFiled: January 28, 2019Publication date: August 1, 2019Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Koshito FUJITA, Hideo KITAMURA, Daigo MURAOKA, Mitsuru UDATSU, Yusuke HANDA, Tetsuya KASEDA, Yasuhiro KATO
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Publication number: 20190193025Abstract: An acid component removal device for removing an acid component from an acid gas absorbent containing an amine, comprising: an anode; a cathode; and an electrodialysis structure having four compartments formed by arranging an first membrane which is either an anion exchange membrane or a cation exchange membrane, a second membrane which is a bipolar membrane, and a third membrane which is either an anion exchange membrane or a cation exchange membrane and which is the other of the first membrane, in this order, from the anode end to the cathode end between the anode and the cathode, with a space each between the membranes.Type: ApplicationFiled: December 21, 2018Publication date: June 27, 2019Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Yasuhiro Kato, Masatoshi Hodotsuka, Tetsuya Kaseda
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Publication number: 20190160422Abstract: 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: ApplicationFiled: November 27, 2018Publication date: May 30, 2019Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Shinji Murai, Yukishige Maezawa, Tetsuya Kaseda, Takehiko Muramatsu, Satoshi Saito, Mitsuru Udatsu, Daigo Muraoka, Masatoshi Hodotsuka
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Patent number: 10022665Abstract: The present embodiments provide an acidic gas recovery apparatus or method capable of efficiently reducing emission of amine to the environment. In the embodiment, an acidic gas recovery apparatus 10A comprises: an acidic gas-absorber 11a; a regeneration tower 12; a gas-cleaner 11b; a cleaning liquid drawing-out line L23; an absorbing liquid drawing-out line L21; and an acidic component-remover 13A. The cleaning water 27c from the cleaning liquid drawing-out line L23 and a purified lean solution 23C from the absorbing liquid drawing-out line L21 are supplied to the acidic component-remover 13A. The acidic component-remover 13A comprises a cathode 53, an anode 54, an absorbing liquid-purification compartment 57 for removing acidic components from the objective lean solution 23B, and cleaning liquid compartments 58-1 and 58-2. The cleaning water 27 is supplied to the cleaning liquid compartments.Type: GrantFiled: August 24, 2017Date of Patent: July 17, 2018Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Yasuhiro Kato, Masatoshi Hodotsuka, Tetsuya Kaseda
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Publication number: 20180056232Abstract: The present embodiments provide an acidic gas recovery apparatus or method capable of efficiently reducing emission of amine to the environment. In the embodiment, an acidic gas recovery apparatus 10A comprises: an acidic gas-absorber 11a; a regeneration tower 12; a gas-cleaner 11b; a cleaning liquid drawing-out line L23; an absorbing liquid drawing-out line L21; and an acidic component-remover 13A. The cleaning water 27c from the cleaning liquid drawing-out line L23 and a purified lean solution 23C from the absorbing liquid drawing-out line L21 are supplied to the acidic component-remover 13A. The acidic component-remover 13A comprises a cathode 53, an anode 54, an absorbing liquid-purification compartment 57 for removing acidic components from the objective lean solution 23B, and cleaning liquid compartments 58-1 and 58-2. The cleaning water 27 is supplied to the cleaning liquid compartments.Type: ApplicationFiled: August 24, 2017Publication date: March 1, 2018Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Yasuhiro Kato, Masatoshi Hodotsuka, Tetsuya Kaseda
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Publication number: 20180001253Abstract: 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: ApplicationFiled: June 27, 2017Publication date: January 4, 2018Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Tetsuya KASEDA, Koshito FUJITA, Mitsuru UDATSU
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Publication number: 20180001254Abstract: 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: ApplicationFiled: June 5, 2017Publication date: January 4, 2018Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Koshito FUJITA, Tetsuya KASEDA, Mitsuru UDATSU, Hideo KITAMURA