Patents by Inventor Hiromi Ishii

Hiromi Ishii 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).

  • Publication number: 20250172082
    Abstract: A gas turbine facility includes: a gas turbine; an ammonia supply device that supplies ammonia to a combustor of the gas turbine; a flow path forming frame forming an exhaust gas flow path through which exhaust gas from the gas turbine flows; a sprinkling device having a sprinkler that sprinkles water into the exhaust gas flow path; and a sprinkling controller that controls an operation of the sprinkling device. The sprinkling controller instructs the sprinkling device to start sprinkling the water on condition that an instruction to start supply of the ammonia to the combustor from the ammonia supply device or an instruction to stop the supply of the ammonia is received.
    Type: Application
    Filed: January 17, 2025
    Publication date: May 29, 2025
    Inventors: Hiromi ISHII, Ryo IKEDA, Akira HATTORI, Hiroyuki TAKEISHI
  • Publication number: 20250154417
    Abstract: The present invention includes: at least one feed hopper for retaining char separated from a generated gas that is generated in a gasifier; a char feed line for feeding char to the gasifier; a char flow rate adjustment device; a fuel feed line that feeds a carbon-containing solid fuel to the gasifier; a fuel flow rate adjustment device provided on the fuel feed line; an oxidant feed line for feeding an oxidant to the gasifier; an oxidant flow rate adjustment device provided on the oxidant feed line; and a control device. The control device is configured to control the char flow rate adjustment device so as to control the char flow rate depending on the load on a unit that uses a combustible gas, and to control at least one of the fuel flow rate adjustment device and the oxidant flow rate adjustment device depending on a total char level.
    Type: Application
    Filed: February 10, 2023
    Publication date: May 15, 2025
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kazuhiro Domoto, Eiki Tanaka, Hiromi Ishii, Shigetaka Takeda, Kenichi Yamashita, Ryusuke Fukushima, Kohei Kawasaki, Toru Katsuyama, Masaya Iwasaki
  • Patent number: 12228059
    Abstract: A gas turbine facility includes: a gas turbine; an ammonia supply device that supplies ammonia to a combustor of the gas turbine; a flow path forming frame forming an exhaust gas flow path through which exhaust gas from the gas turbine flows; a sprinkling device having a sprinkler that sprinkles water into the exhaust gas flow path; and a sprinkling controller that controls an operation of the sprinkling device. The sprinkling controller instructs the sprinkling device to start sprinkling the water on condition that an instruction to start supply of the ammonia to the combustor from the ammonia supply device or an instruction to stop the supply of the ammonia is received.
    Type: Grant
    Filed: June 16, 2022
    Date of Patent: February 18, 2025
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hiromi Ishii, Ryo Ikeda, Akira Hattori, Hiroyuki Takeishi
  • Patent number: 12173645
    Abstract: This gas turbine plant is provided with a gas turbine and a fuel supply facility. The fuel supply facility is provided with: a liquid ammonia line; a warm water line through which warm water can flow; a vaporizer which can perform the heat exchange between the warm water coming from the warm water line and liquid ammonia coming from the liquid ammonia line to heat and vaporize the liquid ammonia; a heat exchanger which can perform the heat exchange between the warm water in the warm water line and a medium; a heat exchange amount controller which can control the amount of heat exchange between the warm water and the medium to control the temperature of the warm water flowing into the vaporizer; and a gaseous ammonia line which can introduce gaseous ammonia that is ammonia vaporized by the vaporizer into the gas turbine.
    Type: Grant
    Filed: February 14, 2022
    Date of Patent: December 24, 2024
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Ryo Ikeda, Hiromi Ishii, Akira Hattori, Michio Sasaki, Takahiro Sugawara
  • Publication number: 20240337207
    Abstract: A gas turbine facility includes: a gas turbine; an ammonia supply device that supplies ammonia to a combustor of the gas turbine; a flow path forming frame forming an exhaust gas flow path through which exhaust gas from the gas turbine flows; a sprinkling device having a sprinkler that sprinkles water into the exhaust gas flow path; and a sprinkling controller that controls an operation of the sprinkling device. The sprinkling controller instructs the sprinkling device to start sprinkling the water on condition that an instruction to start supply of the ammonia to the combustor from the ammonia supply device or an instruction to stop the supply of the ammonia is received.
    Type: Application
    Filed: June 16, 2022
    Publication date: October 10, 2024
    Inventors: Hiromi ISHII, Ryo IKEDA, Akira HATTORI, Hiroyuki TAKEISHI
  • Publication number: 20240316520
    Abstract: An ammonia decomposition system includes: a reactor filled with a catalyst for a decomposition reaction where ammonia which is a raw material is decomposed into hydrogen and nitrogen; and a diluent gas supply line for supplying a diluent gas having a lower ammonia concentration than the raw material, such that the diluent gas is mixed with the raw material before the raw material flows into the catalyst.
    Type: Application
    Filed: December 7, 2021
    Publication date: September 26, 2024
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Masakazu Sakaguchi, Shinya Tachibana, Hiroyuki Furuichi, Takahito Yonekawa, Erika Oda, Hiromi Ishii
  • Publication number: 20240093639
    Abstract: This gas turbine plant is provided with a gas turbine and a fuel supply facility. The fuel supply facility is provided with: a liquid ammonia line; a warm water line through which warm water can flow; a vaporizer which can perform the heat exchange between the warm water coming from the warm water line and liquid ammonia coming from the liquid ammonia line to heat and vaporize the liquid ammonia; a heat exchanger which can perform the heat exchange between the warm water in the warm water line and a medium; a heat exchange amount controller which can control the amount of heat exchange between the warm water and the medium to control the temperature of the warm water flowing into the vaporizer; and a gaseous ammonia line which can introduce gaseous ammonia that is ammonia vaporized by the vaporizer into the gas turbine.
    Type: Application
    Filed: February 14, 2022
    Publication date: March 21, 2024
    Inventors: Ryo IKEDA, Hiromi ISHII, Akira HATTORI, Michio SASAKI, Takahiro SUGAWARA
  • Patent number: 11833467
    Abstract: A boiler plant includes a carbon dioxide capture system. The carbon dioxide capture system has an absorbing-liquid regeneration device and an absorber. The absorbing-liquid regeneration device includes a regenerator, a first circulation line in which the absorbing liquid is taken out from the regenerator and is returned to the regenerator, and a second circulation line in which the absorbing liquid is taken out from the regenerator and is returned to the regenerator, a heat exchanger, a heater, and a switcher. The heat exchanger heats the absorbing liquid by exchanging heat between the absorbing liquid flowing through the first circulation line and steam from the boiler. The heater heats the absorbing liquid flowing in the second circulation line. The switcher switches between a first heating state, in which the absorbing liquid flows in the first circulation line, and a second heating state, in which the absorbing liquid flows in the second circulation line.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: December 5, 2023
    Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., MITSUBISHI HEAVY INDUSTRIES ENGINEERING, LTD.
    Inventors: Atsushi Tsutsumi, Hiromi Ishii, Tetsuya Tanaka, Naoyuki Nagafuchi, Takashi Kamijo
  • Publication number: 20230021855
    Abstract: This exhaust gas processing equipment is provided with an exhaust line through which exhaust gas discharged from a boiler circulates, a carbon dioxide recovering device for recovering carbon dioxide included in the exhaust gas, and an exhaust gas heating device provided downstream of the carbon dioxide recovering device to heat the exhaust gas. The carbon dioxide recovering device includes a first medium line through which a first medium circulates, and a second medium line through which a second medium higher in temperature than the first medium circulates. The exhaust gas heating device includes a first heating unit for heating the exhaust gas by means of heat exchange with the first medium, and a second heating unit for heating the exhaust gas passing through the first heating unit even more by heat exchange with the second medium.
    Type: Application
    Filed: November 24, 2020
    Publication date: January 26, 2023
    Inventors: Takashi KAMIJO, Atsushi TSUTSUMI, Hiromi ISHII, Takahiro ARAYA, Tetsuya TANAKA, Kazunori TSUJII, Naoyuki NAGAFUCHI
  • Publication number: 20220410062
    Abstract: Provided is a boiler plant including a carbon dioxide capture system. The carbon dioxide capture system has an absorbing-liquid regeneration device and an absorber. The absorbing-liquid regeneration device includes a regenerator, a first circulation line in which the absorbing liquid is taken out from the regenerator and is returned to the regenerator, and a second circulation line in which the absorbing liquid is taken out from the regenerator and is returned to the regenerator, a heat exchanger, a heater, and a switcher. The heat exchanger heats the absorbing liquid by exchanging heat between the absorbing liquid flowing through the first circulation line and steam from the boiler. The heater heats the absorbing liquid flowing in the second circulation line. The switcher switches between a first heating state in which the absorbing liquid flows in the first circulation line and a second heating state in which the absorbing liquid flows in the second circulation line.
    Type: Application
    Filed: December 7, 2020
    Publication date: December 29, 2022
    Inventors: Atsushi TSUTSUMI, Hiromi ISHII, Tetsuya TANAKA, Naoyuki NAGAFUCHI, Takashi KAMIJO
  • Patent number: 11084995
    Abstract: A carbonaceous feedstock gasification power generation facility, and a method for regulating a gas for drying gas this carbonaceous feedstock, are disclosed with which it is possible to expand the range of the types of carbonaceous feedstocks that can be used. High-temperature exhaust gas, low-temperature exhaust gas and extreme high-temperature exhaust gas are bled from the furnace respectively at a high-temperature bleed position, a low-temperature bleed position and an extreme high-temperature bleed position. When these exhaust gases are mixed, the flow volume of the extreme high-temperature exhaust gas supplied to at least one of the exhaust gases, that is, the high-temperature exhaust gas or the low-temperature exhaust gas, is adjusted such that the temperature of at least one of these exhaust gases, that is, the high-temperature exhaust gas or the low-temperature exhaust gas, reaches a prescribed temperature.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: August 10, 2021
    Assignee: MITSUBISHI POWER, LTD.
    Inventors: Koichi Sakamoto, Hiromi Ishii, Takashi Fujii, Shogo Yoshida
  • Publication number: 20190144769
    Abstract: A carbonaceous feedstock gasification power generation facility, and a method for regulating a gas for drying gas this carbonaceous feedstock, are disclosed with which it is possible to expand the range of the types of carbonaceous feedstocks that can be used. High-temperature exhaust gas, low-temperature exhaust gas and extreme high-temperature exhaust gas are bled from the furnace respectively at a high-temperature bleed position, a low-temperature bleed position and an extreme high-temperature bleed position. When these exhaust gases are mixed, the flow volume of the extreme high-temperature exhaust gas supplied to at least one of the exhaust gases, that is, the high-temperature exhaust gas or the low-temperature exhaust gas, is adjusted such that the temperature of at least one of these exhaust gases, that is, the high-temperature exhaust gas or the low-temperature exhaust gas, reaches a prescribed temperature.
    Type: Application
    Filed: May 10, 2017
    Publication date: May 16, 2019
    Applicant: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Koichi Sakamoto, Hiromi Ishii, Takashi Fujii, Shogo Yoshida
  • Patent number: 9890331
    Abstract: A gasification facility which uses flammable gas as a carrier medium for air-transporting powder fuel, used as a gasification raw material, to a gasification furnace and which can safely release the flammable gas, exhausted from a fuel feed hopper, to the atmosphere. In the gasification facility using flammable gas as a carrier medium for transporting pulverized coal as powder fuel from a pulverized coal feed hopper (7) to a gasification furnace (11), the flammable gas discharged from the pulverized coal feed hopper (7) is subjected to incineration treatment and then released to the atmosphere, so that safe release to the atmosphere can be implemented.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: February 13, 2018
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yasutaka Mizokoshi, Hiromi Ishii, Takashi Iwahashi, Katsuhiko Yokohama, Takashi Yamamoto
  • Patent number: 9487715
    Abstract: Provided is a coal gasifier enabling a reduction in size of a shift reactor by generating hydrogen-rich gasified coal gas. In a coal gasifier (G) generating gasified coal gas by a gasification reaction proceeding in a furnace fed with a gasifiable raw material, such as coal, and a gasifying agent, at least one of water and steam is fed to the furnace as a material accelerating a hydrogen-generating reaction that proceeds simultaneously with the gasification reaction.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: November 8, 2016
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Takashi Yamamoto, Katsuhiko Yokohama, Yoshinori Koyama, Katsuhiro Ota, Hiromi Ishii
  • Patent number: 9261020
    Abstract: Synthesis gas (syngas) gasified in a gasification furnace to which coal is introduced burns in a combustor. An exhaust-heat recovery boiler generates steam by using exhaust gas let out from a gas turbine equipped with the combustor. The steam generated in the exhaust-heat recovery boiler is introduced to a steam turbine. A generator is driven by the steam turbine and the gas turbine to generate electrical power. Part of the exhaust gas let out from the gas turbine is introduced to a carbon-dioxide recovery unit, where carbon dioxide is recovered therefrom. Coal is carried to the gasification furnace by the carbon dioxide.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: February 16, 2016
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hiromi Ishii, Yuichiro Kitagawa, Yasunari Shibata, Yuichiro Urakata
  • Patent number: 9199806
    Abstract: A bin system and a char recovery unit are provided with: a bin for storing char; three char discharge lines placed at the predetermined slope angle for causing the char to fall with the force of gravity so as to discharge the char into the bin; four switching lines placed at the predetermined slope angle for causing the char to fall with the force of gravity so as to feed the char stored in the bin; and assist gas feed units as assist devices for assisting the flow of the char that falls with the force of gravity through the char discharge lines. This allows for equipment downsizing.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: December 1, 2015
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Yoshinori Koyama, Osamu Shinada, Yasunari Shibata, Hiromi Ishii, Takashi Yamamoto
  • Publication number: 20150159096
    Abstract: It is intended to provide a fuel gasification system, a control method and a control program for the fuel gasification system, and a fuel gasification combined power generation system provided with the fuel gasification system, whereby even when types and properties of the fuel changes, a calorific value of combustible gas produced by gasification of the fuel is stable while increase or decrease in the amount of char generation is suppressed. A control device (26) of a fuel gasification system (12) controls, depending on an indicator corresponding to the calorific value (SG calorific value) of the combustible gas, the supply of the fuel to a gasification furnace (16) and the supply of the oxygen gas to the gasification furnace (16) so as to change a ratio of the supply of the oxygen gas to the supply of the air supplied to the gasification furnace (16).
    Type: Application
    Filed: November 26, 2012
    Publication date: June 11, 2015
    Inventors: Takanori Tsutsumi, Hiromi Ishii, Takashi Fujii, Yoshinori Koyama
  • Publication number: 20150144843
    Abstract: Provided is a coal gasifier enabling a reduction in size of a shift reactor by generating hydrogen-rich gasified coal gas. In a coal gasifier (G) generating gasified coal gas by a gasification reaction proceeding in a furnace fed with a gasifiable raw material, such as coal, and a gasifying agent, at least one of water and steam is fed to the furnace as a material accelerating a hydrogen-generating reaction that proceeds simultaneously with the gasification reaction.
    Type: Application
    Filed: January 30, 2015
    Publication date: May 28, 2015
    Inventors: Takashi YAMAMOTO, Katsuhiko YOKOHAMA, Yoshinori KOYAMA, Katsuhiro OTA, Hiromi ISHII
  • Publication number: 20140231239
    Abstract: In a bin system and a char recovery apparatus, reduction in size of the apparatus can be achieved. Provided are: a bin (44) that can store char; three char discharge lines (47, 49a, 49b) that are arranged at a predetermined inclination angle at which the char can be discharged in the bin (44) by means of gravitational fall; four switching lines (51a, 51b, 51c, 51d) that are arranged at the predetermined inclination angle theta at which the char stored in the bin (44) can be fed by means of the gravitational fall; and assist gas feed parts (54, 55a, 55b) as an assist device that assist flow of the char gravitationally falling down the char discharge lines (47, 49a, 49b).
    Type: Application
    Filed: November 22, 2012
    Publication date: August 21, 2014
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yoshinori Koyama, Yuichiro Urakata, Osamu Shinada, Yasunari Shibata, Takashi Yamamoto, Koji Nishimura, Hiromi Ishii
  • Patent number: 8667912
    Abstract: In a burner for highly caking coal in which a solid fuel channel that is attached penetrating through a surrounding wall of a gasifier for gasifying a highly caking solid fuel that has been pulverized into particles and that supplies the solid fuel into the gasifier by gas flow transportation, and a gasifying agent channel that supplies a gasifying agent into the gasifier are provided, a blockage detection unit that detects a blockage situation of the solid fuel channel is provided, and a process for reducing the temperature of the solid fuel is performed when the blockage detection unit detects a predetermined blockage situation.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: March 11, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Yoshinori Koyama, Takeshi Aruga, Hiromi Ishii