Patents by Inventor Tetsu Ushiku
Tetsu Ushiku 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: 11364467Abstract: Provided is a desulfurization device that allows for the easy and accurate disposition of a spray pipe inside an absorption tower. Provided is a desulfurization device including: an absorption tower (10); and a spray pipe (20) disposed inside the absorption tower (10). The spray pipe (20) includes: a cylindrical pipe portion (21), the leading end of which is closed; and an attachment flange (24) attached to the pipe portion (21). The absorption tower (10) includes: an opening hole (14e) opening toward the side; and a flange (14a) disposed around the opening hole (14e). The attachment flange (24) and the flange (14a) are detachably attached.Type: GrantFiled: September 18, 2018Date of Patent: June 21, 2022Assignee: MITSUBISHI POWER, LTD.Inventors: Satoru Sugita, Tetsu Ushiku, Ryozo Sasaki, Naoyuki Yoshizumi, Tsuyoshi Miyachi, Seiji Kagawa
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Patent number: 11325850Abstract: An apparatus is disclosed including a desulfurization device which removes sulfur oxides contained in boiler flue gas, a spray drying device which sprays desulfurization waste water discharged from the desulfurization device and which dries the waste water by introducing a drying gas, a flue gas supplying line L13 which returns, to a main flue L11, flue gas obtained after the desulfurization waste water is evaporated and dried, an alkaline agent supplying unit which adds an alkaline agent to a desulfurization waste water line L21, and a pH meter which measures the pH in the desulfurization waste water at locations before and after the alkaline agent supplying unit in the desulfurization waste water line L21, wherein the alkaline agent is added in accordance with a measurement result of a measured pH to cause the desulfurization waste water added with the alkaline agent to have a pH fall within a predetermined pH.Type: GrantFiled: March 27, 2018Date of Patent: May 10, 2022Assignee: MITSUBISHI POWER, LTD.Inventors: Naoyuki Kamiyama, Nobuyuki Ukai, Koichiro Hirayama, Satoru Sugita, Tetsu Ushiku, Toshihiro Fukuda
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Patent number: 10967327Abstract: A spray drying system for drying wastewater to be dried includes: an exhaust as introduction line for introducing the exhaust gas discharged from an exhaust gas generation source, the exhaust gas introduction line being connected to a plurality of exhaust gas ducts for allowing the exhaust gas to flow through; and at least one spray drying device connected to the exhaust gas introduction line and configured to bring the exhaust gas introduced from the exhaust gas introduction line into contact with the wastewater. The number of spray drying device is smaller than the number of the plurality of exhaust gas ducts.Type: GrantFiled: October 11, 2017Date of Patent: April 6, 2021Assignee: MITSUBISHI POWER, LTD.Inventors: Toshihiro Fukuda, Satoru Sugita, Tetsu Ushiku, Seiji Kagawa
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Patent number: 10953363Abstract: A method for installing a spray pipe, including an insertion step of inserting a spray pipe from an opening portion, a positioning step of positioning the spray pipe such that an installation surface of a leg portion faces a supporting surface of a supporting portion, a provisional tightening step of provisionally tightening a first fastening portion to couple an attachment flange with the opening portion, an adjusting step of adjusting the height of the installation surface relative to the supporting surface such that an axis along which a pipe portion extends coincides with the horizontal plane, in the provisionally tightened state resulting from the provisional tightening step, a coupling step of coupling the leg portion to the supporting portion by means of a second fastening portion, after the adjusting step, and a final tightening step of performing a final tightening of the first fastening portion after the coupling step.Type: GrantFiled: July 12, 2018Date of Patent: March 23, 2021Assignee: MITSUBISHI POWER, LTD.Inventors: Satoru Sugita, Tetsu Ushiku, Ryozo Sasaki, Naoyuki Yoshizumi, Tsuyoshi Miyachi, Seiji Kagawa
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Publication number: 20210073701Abstract: Provided is an operation support system for a desulfurization apparatus evaluates soundness of the desulfurization apparatus by comparing an analytic performance calculated based on operation data of the desulfurization apparatus and a measured performance and creates support information including an operation condition candidate set based on the evaluation result and a balance forecast.Type: ApplicationFiled: February 28, 2019Publication date: March 11, 2021Applicant: Mitsubishi Power, Ltd.Inventors: Naoyuki Kamiyama, Seiji Kagawa, Tetsu Ushiku, Shogo Mori
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Patent number: 10926217Abstract: A ship desulfurization device for desulfurizing exhaust gas discharged from an exhaust gas generation device mounted to a ship includes: an absorber including an absorber body unit defining an interior space having a longitudinal direction and having an exhaust gas introducing port formed on an end portion of the absorber body unit with respect to the longitudinal direction, the exhaust gas introducing port being in communication with the interior space; and an exhaust gas introducing device for introducing exhaust gas discharged from the exhaust gas generation device to the absorber body unit. When L is a maximum length of the interior space of the absorber body unit with respect to the longitudinal direction, and W is a maximum width of the interior space of the absorber body unit with respect to a lateral direction that is orthogonal to the longitudinal direction, a ratio (W:L) of the maximum width W to the maximum length L is within a range of 1:over 1.1 and 1:6.0 or under 6.0.Type: GrantFiled: January 27, 2017Date of Patent: February 23, 2021Assignees: Mitsubishi Power, Ltd., Mitsubishi Shipbuilding Co., Ltd.Inventors: Ryozo Sasaki, Tetsu Ushiku, Satoru Sugita, Tatsuto Nagayasu, Seiji Kagawa, Naoyuki Kamiyama, Yusuke Watanabe
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Publication number: 20200406185Abstract: A ship desulfurization device includes an absorber including an absorber body unit defining an interior space having a longitudinal direction and having an exhaust gas introducing port on an end portion of the absorber body unit with respect to the longitudinal direction, the exhaust gas introducing port in communication with the interior space; and an exhaust gas introducing device for introducing exhaust gas discharged from the exhaust gas generation device to the absorber body unit. When L is a maximum length of the interior space of the absorber body unit with respect to the longitudinal direction, and W is a maximum width of the interior space of the absorber body unit with respect to a lateral direction that is orthogonal to the longitudinal direction, a ratio (W:L) of the maximum width W to the maximum length L is within a range of 1:X, where 1.1<X?6.0.Type: ApplicationFiled: January 27, 2017Publication date: December 31, 2020Applicants: Mitsubishi Hitachi Power Systems, Ltd., MITSUBISHI SHIPBUILDING CO., LTD.Inventors: Ryozo Sasaki, Tetsu Ushiku, Satoru Sugita, Tatsuto Nagayasu, Seiji Kagawa, Naoyuki Kamiyama, Yusuke Watanabe
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Publication number: 20200398215Abstract: A water treatment tank includes: a tank body including a bottom surface extending in a horizontal direction; an overflow wall partitioning the inside of the tank body into an upstream tank into which treatment water having absorbed sulfur from an exhaust gas is introduced and a downstream tank into which the treatment water overflowing from the upstream tank is introduced to flow therein; and an inclined part that is provided between the bottom surface of the tank body and the overflow wall in the downstream tank and is inclined downward as it goes from the overflow wall toward a downstream side inside the downstream tank to be connected to the bottom surface of the tank body.Type: ApplicationFiled: February 22, 2019Publication date: December 24, 2020Inventors: Masamichi IINO, Takashi KAWANO, Hiroshi KAWANE, Hideaki SAKURAI, Naoyuki KAMIYAMA, Ryozo SASAKI, Tetsu USHIKU
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Publication number: 20200384407Abstract: An object is to provide a spray pipe and a desulfurization apparatus provided with the spray pipe that facilitate determination of abrasion of the spray pipe and determination of necessity of repair and replacement of the spray pipe. The spray pipe according to the present disclosure includes: a tubular strength layer that is configured of :fiber-reinforced plastic; an outer abrasion resistant layer that covers an outer peripheral side of the strength layer; and an inner abrasion resistant layer that covers an inner peripheral side of the strength layer. The outer abrasion resistant layer is a laminated body of a plurality of first abrasion resistant layers, and colors of the plurality of first abrasion resistant layers are different from each other.Type: ApplicationFiled: November 16, 2018Publication date: December 10, 2020Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Ryuji Yoshiyama, Kairi Yamada, Naoyuki Kamiyama, Seiji Kagawa, Tsuyoshi Miyachi, Naoyuki Yoshizumi, Takuro Soeda, Tetsu Ushiku
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Patent number: 10780473Abstract: A cement solidification device for waste includes a slurrying vessel 14 that dissolves and slurries waste 11 containing harmful substances and deliquescent compounds in solvent water 12 to obtain slurried material 13; an iron-based additive supply unit 16 that adds an iron-based additive 15 to the slurrying vessel 14; a cement kneading vessel 20 that adds a cement solidifying agent 17 from a cement-solidifying agent supply unit 18 to the slurried material 13 in which the iron-based additive 15 is mixed to obtain a cement kneaded product 19; and a cement solidification unit 22 that cures the cement kneaded product 19 to form a cement solidified product 21.Type: GrantFiled: February 25, 2016Date of Patent: September 22, 2020Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Naoyuki Kamiyama, Seiji Kagawa, Tetsu Ushiku, Satoru Sugita, Toshihiro Fukuda
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Publication number: 20200171425Abstract: A method for installing a spray pipe, including an insertion step of inserting a spray pipe from an opening portion, a positioning step of positioning the spray pipe such that an installation surface of a leg portion faces a supporting surface of a supporting portion, a provisional tightening step of provisionally tightening a first fastening portion to couple an attachment flange with the opening portion, an adjusting step of adjusting the height of the installation surface relative to the supporting surface such that an axis along which a pipe portion extends coincides with the horizontal plane, in the provisionally tightened state resulting from the provisional tightening step, a coupling step of coupling the leg portion to the supporting portion by means of a second fastening portion, after the adjusting step, and a final tightening step of performing a final tightening of the first fastening portion after the coupling step.Type: ApplicationFiled: July 12, 2018Publication date: June 4, 2020Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Satoru Sugita, Tetsu Ushiku, Ryozo Sasaki, Naoyuki Yoshizumi, Tsuyoshi Miyachi, Seiji Kagawa
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Patent number: 10646820Abstract: Flue gas generated when fuel is subjected to combustion by a combustor such as a boiler is supplied, and a sulfur oxide is reduced or removed from the supplied flue gas. A desulfurization apparatus 10A includes an absorber 11, a gas introduction unit 13a, an absorbent jetting unit 15, a plurality of water flow oxidation devices 20, an absorbent supplying unit 25, a demister 30, a gas discharging unit 13b, and a control device 40 that varies the number of water flow oxidation devices 20 that jet absorbent 14 and air 21 based on a rate of the sulfur compound in the absorbent 14 within an absorbent storage tank 11A.Type: GrantFiled: July 15, 2016Date of Patent: May 12, 2020Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Seiji Kagawa, Naoyuki Kamiyama, Takashi Yoshimoto, Tetsu Ushiku, Satoru Sugita
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Publication number: 20200094186Abstract: A spray pipe is disclosed, which includes: a pipe portion, having a cylindrical shape, and configured to extend along an axis in the horizontal direction, a distal end portion of the pipe portion being closed; a plurality of nozzle portions configured to guide an absorbing liquid, flowing through the pipe portion in the horizontal direction, upward in a vertical direction, the plurality of nozzle portions being arranged at a plurality of positions on an upper end portion of the pipe portion in the vertical direction; and a leg portion disposed on a lower end portion of the pipe portion in the vertical direction, and having an installation surface along the horizontal direction, wherein the leg portion-is disposed in a state where the installation surface is made to oppositely face a support surface of a pipe support installed on the absorption tower, the support surface extending along the horizontal direction.Type: ApplicationFiled: June 22, 2017Publication date: March 26, 2020Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Satoru Sugita, Tetsu Ushiku, Ryozo Sasaki, Naoyuki Yoshizumi, Tsuyoshi Miyachi, Seiji Kagawa
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Publication number: 20200071207Abstract: An apparatus is disclosed including a desulfurization device which removes sulfur oxides contained in boiler flue gas, a spray drying device which sprays desulfurization waste water discharged from the desulfurization device and which dries the waste water by introducing a drying gas, a flue gas supplying line L13 which returns, to a main flue L11, flue gas obtained after the desulfurization waste water is evaporated and dried, an alkaline agent supplying unit which adds an alkaline agent to a desulfurization waste water line L21, and a pH meter which measures the pH in the desulfurization waste water at locations before and after the alkaline agent supplying unit in the desulfurization waste water line L21, wherein the alkaline agent is added in accordance with a measurement result of a measured pH to cause the desulfurization waste water added with the alkaline agent to have a pH fall within a predetermined pH.Type: ApplicationFiled: March 27, 2018Publication date: March 5, 2020Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Naoyuki Kamiyama, Nobuyuki Ukai, Koichiro Hirayama, Satoru Sugita, Tetsu Ushiku, Toshihiro Fukuda
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Publication number: 20200061533Abstract: Provided is a desulfurization device that allows for the easy and accurate disposition of a spray pipe inside an absorption tower. Provided is a desulfurization device including: an absorption tower (10); and a spray pipe (20) disposed inside the absorption tower (10). The spray pipe (20) includes: a cylindrical pipe portion (21), the leading end of which is closed; and an attachment flange (24) attached to the pipe portion (21). The absorption tower (10) includes: an opening hole (14e) opening toward the side; and a flange (14a) disposed around the opening hole (14e). The attachment flange (24) and the flange (14a) are detachably attached.Type: ApplicationFiled: September 18, 2018Publication date: February 27, 2020Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Satoru Sugita, Tetsu Ushiku, Ryozo Sasaki, Naoyuki Yoshizumi, Tsuyoshi Miyachi, Seiji Kagawa
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Patent number: 10471382Abstract: An air pollution control system includes a denitration device that removes nitrogen oxide in flue gas from a boiler; a heat transfer tube for recovering part of heat of the flue gas after denitration; a precipitator that removes soot and dust in the flue gas after heat recovery; a desulfurization device that removes sulfur oxide in the flue gas discharged from the precipitator; a heat transfer tube for heating the flue gas discharged from the desulfurization device; a circulation pump that circulates a heat medium between the heat transfer tubes; a heat medium heater provided to the circulation pipe to heat the heat medium; and a control device that controls the heat medium heater based on an ammonia concentration at an outlet of the denitration device. The control device causes the heat medium heater to heat the heat medium when the ammonia concentration is higher than a certain value.Type: GrantFiled: February 21, 2017Date of Patent: November 12, 2019Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Tsuyoshi Miyachi, Seiji Kagawa, Naoyuki Kamiyama, Tetsu Ushiku
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Patent number: 10436096Abstract: A heat exchanger includes a heat recovery unit that causes a heat medium to recover heat from flue gas through first heat exchange by bringing the flue gas into contact with a fin tube; a reheater including a preheating unit configured to preheat flue gas through second heat exchange by bringing the flue gas into contact with a tube, and heating units that heat the flue gas through third heat exchange by bringing the flue gas into contact with the heat medium; and a control unit that calculates a recovered heat quantity to be recovered by the heat recovery unit from the flue gas through the first heat exchange, and that controls temperature of the heat medium after the first heat exchange within a predetermined range.Type: GrantFiled: November 4, 2015Date of Patent: October 8, 2019Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Tsuyoshi Miyachi, Seiji Kagawa, Naoyuki Kamiyama, Tetsu Ushiku
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Publication number: 20190270049Abstract: A spray flying system for drying wastewater to be dried includes: an exhaust as introduction line for introducing the exhaust gas discharged from an exhaust gas generation source, the exhaust gas introduction line being connected to a plurality of exhaust gas ducts for allowing the exhaust gas to flow through; and at least one spray drying device connected to the exhaust gas introduction line and configured to bring the exhaust gas introduced from the exhaust gas introduction line into contact with the wastewater. The number of spray drying device is smaller than the number of the plurality of exhaust gas ducts.Type: ApplicationFiled: October 11, 2017Publication date: September 5, 2019Applicant: Mitsubishi Hitachi Power Systems, Ltd.Inventors: Toshihiro Fukuda, Satoru Sugita, Tetsu Ushiku, Seiji Kagawa
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Publication number: 20190099714Abstract: An air pollution control system includes adenitration device that removes nitrogen oxide in flue gas from a boiler; a heat transfer tube for recovering part of heat of the flue gas after denitration; a precipitator that removes soot and dust in the flue gas after heat recovery; a desulfurization device that removes sulfur oxide in the flue gas discharged from the precipitator; a heat transfer tube for heating the flue gas discharged from the desulfurization device; a circulation pump that circulates a heat medium between the heat transfer tubes; a heat medium heater provided to the circulation pipe to heat the heat medium; and a control device that controls the heat medium heater based on an ammonia concentration at an outlet of the denitration device. The control device causes the heat medium heater to heat the heat medium when the ammonia concentration is higher than a certain value.Type: ApplicationFiled: February 21, 2017Publication date: April 4, 2019Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Tsuyoshi Miyachi, Seiji Kagawa, Naoyuki Kamiyama, Tetsu Ushiku
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Publication number: 20180200667Abstract: Flue gas generated when fuel is subjected to combustion by a combustor such as a boiler is supplied, and a sulfur oxide is reduced or removed from the supplied flue gas. A desulfurization apparatus 10A includes an absorber 11, a gas introduction unit 13a, an absorbent jetting unit 15, a plurality of water flow oxidation devices 20, an absorbent supplying unit 25, a demister 30, a gas discharging unit 13b, and a control device 40 that varies the number of water flow oxidation devices 20 that jet absorbent 14 and air 21 based on a rate of the sulfur compound in the absorbent 14 within an absorbent storage tank 11A.Type: ApplicationFiled: July 15, 2016Publication date: July 19, 2018Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Seiji Kagawa, Naoyuki Kamiyama, Takashi Yoshimoto, Tetsu Ushiku, Satoru Sugita