Patents by Inventor Daigo MURAOKA
Daigo MURAOKA 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: 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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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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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: 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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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: 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: 10046269Abstract: There are provided an acidic gas absorbing agent that is large in recovery amount of an acidic gas. The acidic gas absorbing agent comprising an amine compound represented by general formula (1), and an acidic gas removing method and an acidic gas removing apparatus using the absorbing agent: wherein R1 represents a cycloalkyl group having 3 to 6 carbon atoms; R2 represents an alkyl group having 1 to 3 carbon atoms or a hydrogen atom; R3 and R4 each independently represent an alkyl group having 1 to 3 carbon atoms or a hydrogen atom; and R5 represents an alkyl group having 1 to 3 carbon atoms.Type: GrantFiled: April 4, 2016Date of Patent: August 14, 2018Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Shinji Murai, Yasuhiro Kato, Takehiko Muramatsu, Satoshi Saito, Daigo Muraoka, Yukishige Maezawa
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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: 20160296882Abstract: There are provided an acidic gas absorbing agent that is large in recovery amount of an acidic gas. The acidic gas absorbing agent comprising an amine compound represented by general formula (1), and an acidic gas removing method and an acidic gas removing apparatus using the absorbing agent: wherein R1 represents a cycloalkyl group having 3 to 6 carbon atoms; R2 represents an alkyl group having 1 to 3 carbon atoms or a hydrogen atom; R3 and R4 each independently represent an alkyl group having 1 to 3 carbon atoms or a hydrogen atom; and R5 represents an alkyl group having 1 to 3 carbon atoms.Type: ApplicationFiled: April 4, 2016Publication date: October 13, 2016Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Shinji MURAI, Yasuhiro KATO, Takehiko MURAMATSU, Satoshi SAITO, Daigo MURAOKA, Yukishige MAEZAWA
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Patent number: 9181174Abstract: A method for isolating an amino alcohol simply from an amino alcohol aqueous solution containing a heterocyclic amine compound is provided. The method is a method for isolating a tertiary amino alcohol from a tertiary amino alcohol aqueous solution containing a heterocyclic amine compound, and for generating an enamine by adding a ketone to the tertiary amino alcohol aqueous solution, isolating the enamine from the tertiary amino alcohol aqueous solution, and isolating the tertiary amino alcohol from a residual liquid obtained by isolating the enamine.Type: GrantFiled: March 19, 2014Date of Patent: November 10, 2015Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Shinji Murai, Takehiko Muramatsu, Daigo Muraoka, Satoshi Saito
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Publication number: 20150298054Abstract: The CO2 recovery apparatus 10A includes: an absorption tower 11 in which a discharge gas 21 is contacted with a second lean solution 22B to allow the second lean solution 22B to absorb CO2; a temperature regulator 12 in which a first rich solution 23A discharged from the absorption tower is heated or cooled to allow the first rich solution 23A to be a solution in which a precipitate containing the reaction accelerator is dispersed; a phase separator 13 in which a second rich solution 23B passed through the temperature regulator 12 is separated into an amino group-containing compound rich phase 31 and a reaction accelerator rich phase 32; a regeneration tower 15 in which a third rich solution 23C is regenerated; and a solution mixing line L13A through which a reaction accelerator rich solution 34 is supplied to a first lean solution 22A discharged from the regeneration tower 15.Type: ApplicationFiled: March 25, 2015Publication date: October 22, 2015Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Daigo MURAOKA, Shinji Murai, Yukishige Maezawa, Masatoshi Hodotsuka
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Publication number: 20150044114Abstract: An acid gas absorbent according to an embodiment includes at least one kind of amino acid salt represented by the following general formula (1). In the above-described formula (1), R1 indicates a cyclic alkyl group having 3 to 8 carbon atoms, R2 indicates a cyclic alkyl group having 3 to 8 carbon atoms, a chain alkyl group having 1 to 8 carbon atoms, or a hydrogen atom, R3 indicates a methylene group, an alkylene group having 2 to 4 carbon atoms, an alkylidene group having 2 to 4 carbon atoms, or a polymethylene group having 3 to 4 carbon atoms, and M indicates alkali metal.Type: ApplicationFiled: August 4, 2014Publication date: February 12, 2015Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Shinji MURAI, Yasuhiro KATO, Yukishige MAEZAWA, Takehiko MURAMATSU, Daigo MURAOKA, Satoshi SAITO
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Publication number: 20140296576Abstract: A method for isolating an amino alcohol simply from an amino alcohol aqueous solution containing a heterocyclic amine compound is provided. The method is a method for isolating a tertiary amino alcohol from a tertiary amino alcohol aqueous solution containing a heterocyclic amine compound, and has generating an imine and/or enamine by adding an aldehyde and/or ketone to the tertiary amino alcohol aqueous solution, isolating the imine and/or enamine from the tertiary amino alcohol aqueous solution, and isolating the tertiary amino alcohol from a residual liquid obtained by isolating the imine and/or enamine.Type: ApplicationFiled: March 19, 2014Publication date: October 2, 2014Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Shinji MURAI, Takehiko MURAMATSU, Daigo MURAOKA, Satoshi SAITO
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Patent number: 8741028Abstract: In one embodiment, a carbon dioxide separating and recovering system includes an absorption tower to cause carbon dioxide to be absorbed in an absorbing solution, a regeneration tower to release the carbon dioxide from the absorbing solution, and at least one measuring apparatus to measure an ultrasound propagation speed in the absorbing solution. Each of the at least one measuring apparatus calculates a dissolved carbon dioxide concentration in the absorbing solution, based on a temperature measured by a temperature measuring unit, the ultrasound propagation speed measured by an ultrasound propagation speed measuring unit, and a correlation expression which shows a relationship between the dissolved carbon dioxide concentration and the ultrasound propagation speed in the absorbing solution, and is changed according to the temperature of the absorbing solution.Type: GrantFiled: January 4, 2012Date of Patent: June 3, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Daigo Muraoka, Koshito Fujita, Takashi Ogawa, Hideo Kitamura, Satoshi Saito, Masatoshi Hodotsuka
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Publication number: 20120167760Abstract: In one embodiment, a carbon dioxide separating and recovering system includes an absorption tower to cause carbon dioxide to be absorbed in an absorbing solution, a regeneration tower to release the carbon dioxide from the absorbing solution, and at least one measuring apparatus to measure an ultrasound propagation speed in the absorbing solution. Each of the at least one measuring apparatus calculates a dissolved carbon dioxide concentration in the adsorbing solution, based on a temperature measured by a temperature measuring unit, the ultrasound propagation speed measured by an ultrasound propagation speed measuring unit, and a correlation expression which shows a relationship between the dissolved carbon dioxide concentration and the ultrasound propagation speed in the absorbing solution, and is changed according to the temperature of the absorbing solution.Type: ApplicationFiled: January 4, 2012Publication date: July 5, 2012Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Daigo MURAOKA, Koshito Fujita, Takashi Ogawa, Hideo Kitamura, Satoshi Saito, Masatoshi Hodotsuka