Patents by Inventor Koshito Fujita
Koshito Fujita 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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Acid gas removal control apparatus, acid gas removal control method, and acid gas removing apparatus
Patent number: 11865492Abstract: In one embodiment, an acid gas removing apparatus includes an absorber configured to bring a first gas including an acid gas and a lean solution into contact to discharge a rich solution that is the lean solution having absorbed the acid gas, a regenerator configured to separate the acid gas from the rich solution discharged by the absorber to discharge the lean solution that is the rich solution separated from the acid gas, and a measuring instrument configured to measure a temperature of the rich or lean solution in the regenerator. Furthermore, an acid gas removal control apparatus that controls the acid gas removing apparatus includes a receiver configured to receive the measured temperature, and a controller configured to control resupply of a resupplied solution to the rich or lean solution or removal of an acid component from the rich or lean solution, based on the received temperature.Type: GrantFiled: September 8, 2021Date of Patent: January 9, 2024Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Yasuhiro Kato, Mitsuru Udatsu, Daigo Muraoka, Hayato Morigaki, Shinji Murai, Koshito Fujita -
Publication number: 20230330626Abstract: A porous metal organic framework having gas adsorption selectivity and excellent water resistance, an adsorbent consisting of the porous metal organic framework, and a method for separating carbon dioxide using the same are provided, which are: a porous metal organic framework, which is characterized by comprising a metal oxalate, a cycloazocarbyl compound, and a bidentate organic ligand; an adsorbent consisting of the porous metal organic framework; and a method for separating carbon dioxide using the same.Type: ApplicationFiled: March 14, 2023Publication date: October 19, 2023Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Shinji MURAI, Yasuhiro KATO, Hayato MORIGAKI, Koshito FUJITA, Satoshi SAITO
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Publication number: 20230257889Abstract: A hydrogen production system according to an embodiment includes an evaporator that evaporates seawater to generate water vapor, an electrolytic device that electrolyzes the water vapor supplied from the evaporator to produce hydrogen, and a removal mechanism that is provided between the evaporator and the electrolytic device and removes a seawater component from the water vapor.Type: ApplicationFiled: January 26, 2023Publication date: August 17, 2023Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Riko INUZUKA, Yuka TSUKADA, Yusuke SUZUKI, Jyunpei MATSUMOTO, Norikazu OSADA, Koshito FUJITA, Shinya MIYAMOTO, Yu YAMASHITA, Naomi TSUCHIYA, Ayaka TAJIMA
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Publication number: 20220314161Abstract: According to one embodiment, a gas processing equipment includes an oxygen remover 2 that removes oxygen contained in exhaust gas G, and a gas processing device 3 that processes pretreated exhaust gas G (P), from which the oxygen has been removed by the oxygen remover 2, with a carbon dioxide absorbent solvent S as a treatment agent.Type: ApplicationFiled: March 15, 2022Publication date: October 6, 2022Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Daigo MURAOKA, Koshito FUJITA, Shinji MURAI, Hayato MORIGAKI, Osamu SHIBASAKI, Yasuhiro KATO, Satoshi SAITO, Takehiko MURAMATSU, Ryosuke SHIBATA, Yusuke HANDA
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Publication number: 20220226770Abstract: A carbon dioxide capture system according to an embodiment includes: a carbon dioxide capturer, an absorbing liquid regenerator, a first washer, a second washer, and an absorbing liquid line. The first washer washes the combustion exhaust gas discharged from the carbon dioxide capturer with a mist of a first cleaning liquid sprayed by a first spray to capture the amine accompanying the combustion exhaust gas. The absorbing liquid line supplies the absorbing liquid regenerated in the absorbing liquid regenerator as the first cleaning liquid to the first spray. The first cleaning liquid sprayed by the first spray is supplied as the absorbing liquid to the carbon dioxide capturer.Type: ApplicationFiled: January 14, 2022Publication date: July 21, 2022Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Koshito FUJITA, Daigo MURAOKA, Yasuhiro KATO, Yusuke HANDA, Satoshi SAITO
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ACID GAS REMOVAL CONTROL APPARATUS, ACID GAS REMOVAL CONTROL METHOD, AND ACID GAS REMOVING APPARATUS
Publication number: 20220080347Abstract: In one embodiment, an acid gas removing apparatus includes an absorber configured to bring a first gas including an acid gas and a lean solution into contact to discharge a rich solution that is the lean solution having absorbed the acid gas, a regenerator configured to separate the acid gas from the rich solution discharged by the absorber to discharge the lean solution that is the rich solution separated from the acid gas, and a measuring instrument configured to measure a temperature of the rich or lean solution in the regenerator. Furthermore, an acid gas removal control apparatus that controls the acid gas removing apparatus includes a receiver configured to receive the measured temperature, and a controller configured to control resupply of a resupplied solution to the rich or lean solution or removal of an acid component from the rich or lean solution, based on the received temperature.Type: ApplicationFiled: September 8, 2021Publication date: March 17, 2022Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Yasuhiro KATO, Mitsuru UDATSU, Daigo MURAOKA, Hayato MORIGAKI, Shinji MURAI, Koshito FUJITA -
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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Publication number: 20210031136Abstract: A carbon dioxide capture system according to the embodiment includes: a carbon dioxide capturer configured to cause a carbon dioxide contained in a combustion exhaust gas into an absorbing liquid containing an amine; a first washer configured to wash the combustion exhaust gas from the carbon dioxide capturer with a mist of a first cleaning liquid sprayed by a spray to capture the amine contained in the combustion exhaust gas; and a cleaning liquid mist capturer configured to capture the mist of the first cleaning liquid contained in the combustion exhaust gas from the first washer. The first washer has a receiver arranged below the spray, and a washing-capturing space arranged between the spray and the receiver. In the washing-capturing space, the mist of the first cleaning liquid comes into gas-liquid contact with the combustion exhaust gas while freely dropping.Type: ApplicationFiled: July 24, 2020Publication date: February 4, 2021Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Koshito FUJITA, Mitsuru UDATSU
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Patent number: 10864478Abstract: A carbon dioxide capture system includes a first capture system and a second capture system. The first capture system including a first absorber that causes carbon dioxide contained in a combustion exhaust gas to be absorbed in a first absorbing liquid. The second capture system causes carbon dioxide contained in a combustion exhaust gas to be absorbed in a second absorbing liquid. The second rich liquid releases carbon dioxide at a lower temperature than the first rich liquid.Type: GrantFiled: November 2, 2016Date of Patent: December 15, 2020Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Koshito Fujita, Mitsuru Udatsu
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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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Patent number: 10518213Abstract: In accordance with an embodiment, a carbon dioxide capturing apparatus includes a first absorbing unit, a regeneration unit, a water washing capturing unit, and a pre-amine capturing unit. The first absorbing unit brings a gas containing carbon dioxide into contact with an absorbing liquid containing an amine compound, and discharges the absorbing liquid which has absorbed carbon dioxide as a rich liquid. The regeneration unit releases a carbon dioxide gas from the rich liquid sent from the first absorbing unit. The water washing capturing unit captures the amine compound entrained in a decarbonated treatment gas sent from the first absorbing unit. The pre-amine capturing unit receives part of the rich liquid from the first absorbing unit, and traps the amine compound entrained in the decarbonated treatment gas by bringing the decarbonated treatment gas from the first absorbing unit into countercurrent contact with the part of the rich liquid.Type: GrantFiled: May 8, 2014Date of Patent: December 31, 2019Assignee: Kabushiki Kaisha ToshibaInventors: Koshito Fujita, Masatoshi Hodotsuka
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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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Patent number: 10112146Abstract: A carbon dioxide capture system according to an embodiment includes an absorber, a stripper, and a heater. The absorber includes a first cleaning unit and a second cleaning unit. The first cleaning unit uses first cleaning liquid to clean combustion exhaust gas discharged from a carbon dioxide capturer and captures amine flowing together with the combustion exhaust gas. The second cleaning unit uses second cleaning liquid to clean the combustion exhaust gas discharged from the first cleaning unit and captures amine flowing together with the combustion exhaust gas. The heater heats the first cleaning liquid to a temperature higher than the temperature of an upper portion of the carbon dioxide capturer and of the second cleaning liquid.Type: GrantFiled: July 27, 2015Date of Patent: October 30, 2018Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Koshito Fujita, Hideo Kitamura, Masatoshi Hodotsuka
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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
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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: 20170165603Abstract: A carbon dioxide capture system includes a first capture system and a second capture system. The first capture system including a first absorber that causes carbon dioxide contained in a combustion exhaust gas to be absorbed in a first absorbing liquid. The second capture system causes carbon dioxide contained in a combustion exhaust gas to be absorbed in a second absorbing liquid. The second rich liquid releases carbon dioxide at a lower temperature than the first rich liquid.Type: ApplicationFiled: November 2, 2016Publication date: June 15, 2017Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Koshito FUJITA, Mitsuru Udatsu
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Publication number: 20170080411Abstract: A CO2 recovery apparatus according to the present invention comprises: an absorption tower comprising a CO2 absorption unit in which an exhaust gas containing CO2 and a lean solution comprising an amino group-containing compound are brought into contact with each other to allow the lean solution to absorb CO2; a regeneration tower in which CO2 contained in a rich solution is separated to regenerate the rich solution; and a purification unit in which an amino group-containing compound in a CO2-removed exhaust gas obtained by removing CO2 in the CO2 absorption unit is removed from, wherein the purification unit comprises a catalytic unit in which a photocatalyst is supported on a carrier including a gap through which air can pass, an activation member which activates the photocatalyst, and a power supply unit. The activation member is a pair of electrodes comprising a first electrode and a second electrode.Type: ApplicationFiled: December 2, 2016Publication date: March 23, 2017Inventors: Koshito FUJITA, Naohiko Shimura, Daigo Muraoka, Masatoshi Hodotsuka
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Publication number: 20160151742Abstract: A carbon dioxide capture system according to an embodiment includes an absorber, a stripper, and a heater. The absorber includes a first cleaning unit and a second cleaning unit. The first cleaning unit uses first cleaning liquid to clean combustion exhaust gas discharged from a carbon dioxide capturer and captures amine flowing together with the combustion exhaust gas. The second cleaning unit uses second cleaning liquid to clean the combustion exhaust gas discharged from the first cleaning unit and captures amine flowing together with the combustion exhaust gas. The heater heats the first cleaning liquid to a temperature higher than the temperature of an upper portion of the carbon dioxide capturer and of the second cleaning liquid.Type: ApplicationFiled: July 27, 2015Publication date: June 2, 2016Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Koshito FUJITA, Hideo KITAMURA, Masatoshi HODOTSUKA
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Publication number: 20140241967Abstract: In accordance with an embodiment, a carbon dioxide capturing apparatus includes a first absorbing unit, a regeneration unit, a water washing capturing unit, and a pre-amine capturing unit. The first absorbing unit brings a gas containing carbon dioxide into contact with an absorbing liquid containing an amine compound, and discharges the absorbing liquid which has absorbed carbon dioxide as a rich liquid. The regeneration unit releases a carbon dioxide gas from the rich liquid sent from the first absorbing unit. The water washing capturing unit captures the amine compound entrained in a decarbonated treatment gas sent from the first absorbing unit. The pre-amine capturing unit receives part of the rich liquid from the first absorbing unit, and traps the amine compound entrained in the decarbonated treatment gas by bringing the decarbonated treatment gas from the first absorbing unit into countercurrent contact with the part of the rich liquid.Type: ApplicationFiled: May 8, 2014Publication date: August 28, 2014Applicant: Kabushiki Kaisha ToshibaInventors: Koshito FUJITA, Masatoshi HODOTSUKA