Patents by Inventor Kosuke Kitakaze
Kosuke Kitakaze 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: 11692705Abstract: A solid fuel burner to be inserted into a burner throat bored in a wall portion of a furnace, comprising: a solid fuel nozzle for ejecting mixed fluid of solid fuel and primary air; a secondary air nozzle for ejecting secondary air; a tertiary air nozzle for ejecting tertiary air; a secondary air guide member for guiding a flow of the secondary air outwardly in a radial direction; and one or more tertiary air guide members for guiding a flow of the tertiary air outwardly in the radial direction at a first angle with respect to a central axis (C) of the solid fuel burner, wherein a distal end position (X2) of each of the tertiary air guide members in an axial direction of the solid fuel burner is at a closer side of the furnace than a distal end position (X1) of the secondary air guide member.Type: GrantFiled: April 23, 2020Date of Patent: July 4, 2023Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kenji Kiyama, Kenichi Ochi, Shohei Mito, Kosuke Kitakaze, Toshihiko Mine
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Patent number: 11649962Abstract: A burner characterized by being equipped with: a fuel supply nozzle to which a mixed flow of a solid fuel and a solid fuel transport gas is supplied; a flow passage that is arranged on the outside of the fuel supply nozzle and that supplies combustion air separated from the mixed flow; and ammonia supply nozzles which are capable of supplying ammonia on the downstream side of the outlet of the fuel supply nozzle toward a reduction region in which oxygen in the transport gas has been consumed due to ignition of the fuel and the progress of combustion, resulting in a low oxygen concentration. Thus, it is possible to provide a burner capable of burning a mixture of a solid fuel and ammonia, and a combustion device equipped with this burner.Type: GrantFiled: May 13, 2019Date of Patent: May 16, 2023Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kenji Kiyama, Yasuhiro Yamauchi, Kenichi Ochi, Hitoshi Taniguchi, Kosuke Kitakaze
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Patent number: 11519600Abstract: A solid fuel burner is provided with a guide member arranged on an outer circumferential section of a distal end of a first gas nozzle so as to guide a fluid flowing through a second flow passage outward in a radial direction; and a contraction forming member that is arranged on an upstream side of the guide member with respect to the flow direction of the second flow passage so as to reduce the cross sectional area of the second flow passage. An outer diameter of the guide member is formed to be smaller than an inner diameter of an outer peripheral wall of a second gas nozzle. The first gas nozzle, the guide member, and the contraction forming member are configured so as to be integrally attachable/detachable along an axial direction of the first gas nozzle toward the outside of a furnace.Type: GrantFiled: December 18, 2018Date of Patent: December 6, 2022Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Satoshi Tadakuma, Akira Baba, Koji Kuramashi, Takeshi Aruga, Shohei Mito, Kosuke Kitakaze, Toshihiko Mine
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Patent number: 11346546Abstract: This solid fuel burner is provided with: a venturi tube in which a channel for mixed fluid in a fuel nozzle narrows toward the center in the channel cross section; a fuel concentrator that imparts, to the mixed fluid, a velocity component away from the center of the fuel nozzle; and a channel separation member that separates the channel of the fuel nozzle into an internal side and an external side; wherein the channel separation member is shaped in such a way that the cross sectional area of an external channel is larger at the downstream end than at the upstream end, and the upstream end of the fuel concentrator is located between the upstream end and the downstream end of an expanded portion of the venturi tube. This solid fuel burner prevents solid fuel particles, which is ground biomass fuel, from adhering and depositing inside the nozzle.Type: GrantFiled: April 16, 2018Date of Patent: May 31, 2022Assignee: MITSUBISHI POWER, LTD.Inventors: Kenichi Ochi, Hitoshi Taniguchi, Akira Baba, Koji Kuramashi, Kosuke Kitakaze, Shohei Mito, Hitoshi Kikuchi
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Publication number: 20210364163Abstract: A burner characterized by being equipped with: a fuel supply nozzle to which a mixed flow of a solid fuel and a solid fuel transport gas is supplied; a flow passage that is arranged on the outside of the fuel supply nozzle and that supplies combustion air separated from the mixed flow; and ammonia supply nozzles which are capable of supplying ammonia on the downstream side of the outlet of the fuel supply nozzle toward a reduction region in which oxygen in the transport gas has been consumed due to ignition of the fuel and the progress of combustion, resulting in a low oxygen concentration. Thus, it is possible to provide a burner capable of burning a mixture of a solid fuel and ammonia, and a combustion device equipped with this burner.Type: ApplicationFiled: May 13, 2019Publication date: November 25, 2021Applicant: Mitsubishi Power, Ltd.Inventors: Kenji KIYAMA, Yasuhiro YAMAUCHI, Kenichi OCHI, Hitoshi TANIGUCHI, Kosuke KITAKAZE
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Publication number: 20210247064Abstract: A solid fuel burner to be inserted into a burner throat bored in a wall portion of a furnace, comprising: a solid fuel nozzle for ejecting mixed fluid of solid fuel and primary air; a secondary air nozzle for ejecting secondary air; a tertiary air nozzle for ejecting tertiary air; a secondary air guide member for guiding a flow of the secondary air outwardly in a radial direction; and one or more tertiary air guide members for guiding a flow of the tertiary air outwardly in the radial direction at a first angle with respect to a central axis (C) of the solid fuel burner, wherein a distal end position (X2) of each of the tertiary air guide members in an axial direction of the solid fuel burner is at a closer side of the furnace than a distal end position (X1) of the secondary air guide member.Type: ApplicationFiled: April 23, 2020Publication date: August 12, 2021Applicant: MITSUBISHI POWER, LTD.Inventors: Kenji Kiyama, Kenichi Ochi, Shohei Mito, Kosuke Kitakaze, Toshihiko Mine
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Patent number: 10974251Abstract: A pulverizing device includes: a housing; a pulverization table configured to rotate inside the housing; and a throat, disposed inside the housing on a radially outer side of the pulverization table, for forming an upward air flow. The throat includes: an inner ring extending along an outer periphery of the pulverization table; an outer ring, disposed on a radially outer side of the inner ring so as to form an annular flow passage between the inner ring and the outer ring; and a plurality of throat vanes disposed between the inner ring and the outer ring. The following expressions are satisfied: 2.0?L/d?4.0; and 0.5?H/d?1.5, where H is a gap between the inner ring and the outer ring with respect to a radial direction, L is a length of the throat vanes, and ādā is a distance between adjacent two of the throat vanes.Type: GrantFiled: January 13, 2017Date of Patent: April 13, 2021Assignee: MITSUBISHI POWER, LTD.Inventors: Jun Kashima, Shinji Matsumoto, Kosuke Kitakaze, Yasuhito Onishi, Hiroaki Kanemoto
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Publication number: 20200363058Abstract: A solid fuel burner is provided with a guide member arranged on an outer circumferential section of a distal end of a first gas nozzle so as to guide a fluid flowing through a second flow passage outward in a radial direction; and a contraction forming member that is arranged on an upstream side of the guide member with respect to the flow direction of the second flow passage so as to reduce the cross sectional area of the second flow passage. An outer diameter of the guide member is formed to be smaller than an inner diameter of an outer peripheral wall of a second gas nozzle. The first gas nozzle, the guide member, and the contraction forming member are configured so as to be integrally attachable/detachable along an axial direction of the first gas nozzle toward the outside of a furnace.Type: ApplicationFiled: December 18, 2018Publication date: November 19, 2020Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Satoshi Tadakuma, Akira Baba, Koji Kuramashi, Takeshi Aruga, Shohei Mito, Kosuke Kitakaze, Toshihiko Mine
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Publication number: 20200072461Abstract: This solid fuel burner is provided with: a venturi tube in which a channel for mixed fluid in a fuel nozzle narrows toward the center in the channel cross section; a fuel concentrator that imparts, to the mixed fluid, a velocity component away from the center of the fuel nozzle; and a channel separation member that separates the channel of the fuel nozzle into an internal side and an external side; wherein the channel separation member is shaped in such a way that the cross sectional area of an external channel is larger at the downstream end than at the upstream end, and the upstream end of the fuel concentrator is located between the upstream end and the downstream end of an expanded portion of the venturi tube. This solid fuel burner prevents solid fuel particles, which is ground biomass fuel, from adhering and depositing inside the nozzle.Type: ApplicationFiled: April 16, 2018Publication date: March 5, 2020Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Kenichi Ochi, Hitoshi Taniguchi, Akira Baba, Koji Kuramashi, Kosuke Kitakaze, Shohei Mito, Hitoshi Kikuchi
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Publication number: 20200056780Abstract: The present invention provides a solid fuel burner which ensures ignition performance and flame holding performance of a fuel nozzle. The present invention provides a solid fuel burner which achieves cost reduction by simplifying the structure of the fuel nozzle, for example, and which ensures the ignition performance and flame holding performance of the fuel nozzle. Further, the present invention provides a burner which enables stable combustion by both solid fuel and oil combustion with the suppression of soot and dust and mist generated during the oil start-up envisaged.Type: ApplicationFiled: August 15, 2019Publication date: February 20, 2020Inventors: Junya WATANABE, Koji KURAMASHI, Akira BABA, Kosuke KITAKAZE, Kenichi OCHI, Kenji KIYAMA
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Publication number: 20180372313Abstract: A pulverizing device includes: a housing; a pulverization table configured to rotate inside the housing; and a throat, disposed inside the housing on a radially outer side of the pulverization table, for forming an upward air flow. The throat includes: an inner ring extending along an outer periphery of the pulverization table; an outer ring, disposed on a radially outer side of the inner ring so as to form an annular flow passage between the inner ring and the outer ring; and a plurality of throat vanes disposed between the inner ring and the outer ring. The following expressions are satisfied: 2.0?L/d?4.0; and 0.5?H/d?1.Type: ApplicationFiled: January 13, 2017Publication date: December 27, 2018Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Jun Kashima, Shinji Matsumoto, Kosuke Kitakaze, Yasuhito Onishi, Hiroaki Kanemoto