Patents by Inventor Norihisa Miyoshi
Norihisa Miyoshi 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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Publication number: 20240125527Abstract: Provided is a air purge device that can effectively discharge air.Type: ApplicationFiled: February 18, 2022Publication date: April 18, 2024Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.Inventors: Nobuki OKA, Ryo KAMITO, Yoshiaki ITO, Taichi YOSHII, Tatsuo ISHIGURO, Yoshie TOGANO, Norihisa HORAGUCHI, Masahiko NAGAI, Naoya MIYOSHI
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Publication number: 20230081521Abstract: The present invention relates to a technique for treating a raw material, such as combustible waste, and more particularly to combustion, and pyrolysis and gasification treatment techniques that does not emit carbon dioxide into the atmosphere. A treatment apparatus includes a fluidized-bed furnace having a pyrolysis chamber and a combustion chamber therein, the pyrolysis chamber and the combustion chamber are separated by a partition wall, an electrolysis device configured to electrolyze water to generate hydrogen and oxygen, a methanation reactor configured to produce methane from carbon dioxide discharged from the combustion chamber and the hydrogen, a first fluidizing-gas supply line configured to supply a first fluidizing gas to the pyrolysis chamber, and a second fluidizing-gas supply line configured to introduce a second fluidizing gas to the combustion chamber, the second fluidizing gas including the oxygen and a part of the carbon dioxide.Type: ApplicationFiled: December 8, 2020Publication date: March 16, 2023Applicant: EBARA ENVIRONMENTAL PLANT CO., LTD.Inventors: Takayuki IHARA, Takashi FUJIWARA, Norihisa MIYOSHI
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Patent number: 7618469Abstract: The present invention provides a fuel gasification furnace including a gasification chamber (1) for fluidizing a high-temperature fluidizing medium therein to form a gasification chamber fluidized bed having an interface, and for gasifying a fuel in the gasification chamber fluidized bed, a char combustion chamber (2) for fluidizing a high-temperature fluidizing medium therein to form a char combustion chamber fluidized bed having an interface, and for combusting char generated by gasification in the gasification chamber (1) in the char combustion chamber fluidized bed to heat the fluidizing medium, and a first energy recovery device (109) for using gases generated by the gasification chamber (1) as a fuel. The gasification chamber (1) and the char combustion chamber (2) are integrated with each other.Type: GrantFiled: May 13, 2008Date of Patent: November 17, 2009Assignee: Ebara CorporationInventors: Norihisa Miyoshi, Seiichiro Toyoda, Shugo Hosoda, Nobutaka Kashima, Katsutoshi Naruse, Katsuyuki Aoki, Shinji Sekikawa, Shuichi Nagato, Hiroshi Hashimoto
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Publication number: 20080263952Abstract: The present invention provides a fuel gasification furnace including a gasification chamber (1) for fluidizing a high-temperature fluidizing medium therein to form a gasification chamber fluidized bed having an interface, and for gasifying a fuel in the gasification chamber fluidized bed, a char combustion chamber (2) for fluidizing a high-temperature fluidizing medium therein to form a char combustion chamber fluidized bed having an interface, and for combusting char generated by gasification in the gasification chamber (1) in the char combustion chamber fluidized bed to heat the fluidizing medium, and a first energy recovery device (109) for using gases generated by the gasification chamber (1) as a fuel. The gasification chamber (1) and the char combustion chamber (2) are integrated with each other.Type: ApplicationFiled: May 13, 2008Publication date: October 30, 2008Inventors: Norihisa Miyoshi, Seiichiro Toyoda, Shugo Hosoda, Nobutaka Kashima, Katsutoshi Naruse, Katsuyuki Aoki, Shinji Sekikawa, Shuichi Nagato, Hiroshi Hashimoto
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Patent number: 7390337Abstract: The present invention provides a fuel gasification furnace including a gasification chamber (1) for fluidizing a high-temperature fluidizing medium therein to form a gasification chamber fluidized bed having an interface, and for gasifying a fuel in the gasification chamber fluidized bed, a char combustion chamber (2) for fluidizing a high-temperature fluidizing medium therein to form a char combustion chamber fluidized bed having an interface, and for combusting char generated by gasification in the gasification chamber (1) in the char combustion chamber fluidized bed to heat the fluidizing medium, and a first energy recovery device (109) for using gases generated by the gasification chamber (1) as a fuel. The gasification chamber (1) and the char combustion chamber (2) are integrated with each other.Type: GrantFiled: March 8, 2005Date of Patent: June 24, 2008Assignee: Ebara CorporationInventors: Norihisa Miyoshi, Seiichiro Toyoda, Shugo Hosoda, Nobutaka Kashima, Katsutoshi Naruse, Katsuyuki Aoki, Shinji Sekikawa, Shuichi Nagato, Hiroshi Hashimoto
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Patent number: 7331299Abstract: An incombustible withdrawing system withdraws an incombustible from a fluidized-bed furnace having a fluidized bed formed therein by a fluidized medium. The incombustible withdrawing system has a mixture delivery path to deliver a mixture of the fluidized medium and the incombustible from a bottom of the fluidized-bed furnace. The incombustible withdrawing system also has a fluidized-bed separating chamber disposed downstream of the mixture delivery path to fluidize the mixture by a fluidizing gas and to separate the mixture into a first separated mixture and a second separated mixture. The incombustible withdrawing system includes a return passage to return the first separated mixture to the fluidized-bed furnace, and an incombustible discharge passage to discharge the second separated mixture to an exterior of the fluidized-bed furnace.Type: GrantFiled: February 28, 2007Date of Patent: February 19, 2008Assignee: Ebara CorporationInventors: Norihisa Miyoshi, Yasuhiro Sawada, Tatsuya Hasegawa, Koh Sasaki
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Patent number: 7285144Abstract: A gasification furnace and a combustion furnace are integrated with each other to form a single fluidized-bed gasification and combustion furnace in which unburned char generated in the gasification furnace is combusted in the combustion furnace, and the thus generated heat of combustion is utilized as a heat source for gasification. The fluidized-bed gasification and combustion furnace (1) comprises a gasification furnace (3) and a combustion furnace (4) which are divided by a first partition wall (2). In the gasification furnace (3), a revolving flow of the fluidized medium is formed by diffusion devices (32, 33) provided on furnace bottoms, and an upward flow of the fluidized medium partly flows in the combustion furnace (4). The combustion furnace (4) is divided into a main partition wall (5).Type: GrantFiled: August 25, 2005Date of Patent: October 23, 2007Assignee: Ebara CorporationInventors: Shuichi Nagato, Takahiro Oshita, Norihisa Miyoshi, Seiichiro Toyoda, Shugo Hosoda, Nobutaka Kashima, Katsutoshi Naruse
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Publication number: 20070144413Abstract: An incombustible withdrawing system withdraws an incombustible from a fluidized-bed furnace having a fluidized bed formed therein by a fluidized medium. The incombustible withdrawing system has a mixture delivery path to deliver a mixture of the fluidized medium and the incombustible from a bottom of the fluidized-bed furnace. The incombustible withdrawing system also has a fluidized-bed separating chamber disposed downstream of the mixture delivery path to fluidize the mixture by a fluidizing gas and to separate the mixture into a first separated mixture and a second separated mixture. The incombustible withdrawing system includes a return passage to return the first separated mixture to the fluidized-bed furnace, and an incombustible discharge passage to discharge the second separated mixture to an exterior of the fluidized-bed furnace.Type: ApplicationFiled: February 28, 2007Publication date: June 28, 2007Inventors: Norihisa Miyoshi, Yasuhiro Sawada, Tatsuya Hasegawa, Koh Sasaki
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Patent number: 7159522Abstract: An incombustible withdrawing system withdraws an incombustible from a fluidized-bed furnace having a fluidized bed formed therein by a fluidized medium. The incombustible withdrawing system has a mixture delivery path to deliver a mixture of the fluidized medium and the incombustible from a bottom of the fluidized-bed furnace. The incombustible withdrawing system also has a fluidized-bed separating chamber disposed downstream of the mixture delivery path to fluidize the mixture by a fluidizing gas and to separate the mixture into a first separated mixture and a second separated mixture. The incombustible withdrawing system includes a return passage to return the first separated mixture to the fluidized-bed furnace, and an incombustible discharge passage to discharge the second separated mixture to an exterior of the fluidized-bed furnace.Type: GrantFiled: January 27, 2006Date of Patent: January 9, 2007Assignee: Ebara CorporationInventors: Norihisa Miyoshi, Yasuhiro Sawada, Tatsuya Hasegawa, Koh Sasaki
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Publication number: 20060260190Abstract: An organic matter such as sewage sludge (101) is treated by gasifying the organic matter into a combustible gas and using the combustible gas as a fuel for a gas engine or a gas turbine to recover power (energy). In a method of treating the organic matter, an organic matter as a raw material is dried in a drying process (51), the dried raw material is gasified to produce a generated gas (123), and the sensible heat from the generated gas and/or a combustion gas produced by gasification is recovered by using a heating medium in a recovery process. Then, the heating medium heated in the recovery process is introduced into the drying process as a heating medium gas for drying.Type: ApplicationFiled: April 14, 2005Publication date: November 23, 2006Inventors: Norihisa Miyoshi, Takashi Imaizumi, Kenji Sawai, Morio Iriyama, Shutaro Takakura
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Patent number: 7128004Abstract: A supplying apparatus supplies a combustible material capable of enhancing the sealing effects of a supplying system for supplying a combustible material, such as combustible wastes, to a fluidized-bed chamber, stably supplies a combustible material having an undefined shape, and reduces cost for installation. A facility is also provided for gasifying a combustible material using the supplying apparatus for supplying a combustible material, and a method of gasifying combustible materials is also provided. The supplying apparatus supplies a combustible material onto the fluidized bed of a fluidized-bed gasifier chamber or a fluidized-bed combustion chamber. A screw conveyor is inclined, with transportation of the combustible material directed upward, at an angle of 20 degrees or more and 80 degrees or less with respect to a horizontal plane, causing a bed material to flow into a conveyor casing of the screw conveyor.Type: GrantFiled: April 30, 2004Date of Patent: October 31, 2006Assignee: Ebara CorporationInventors: Norihisa Miyoshi, Tatsuya Hasegawa, Katsutoshi Naruse, Yasuhiro Sawada, Koh Sasaki
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Publication number: 20060194990Abstract: A recycling system has a pyrolysis apparatus (40) having a combustion section (42) for selectively combusting a carbon component in materials, and a gasification section (41) for pyrolyzing and gasifying the materials by using heat of combustion in the combustion section (42). The materials include residual oil from an atmospheric distillation unit (10), a vacuum distillation unit (20), and a decomposition unit (28), various wastes including waste plastics (181), wastes (182), and shredder dust (183), and organic matter such as biomass (184). The recycling system has a passage for supplying pyrolysates (120) produced in the gasification section (41) to an oil refinery system or a petrochemical system.Type: ApplicationFiled: August 26, 2004Publication date: August 31, 2006Inventors: Norihisa Miyoshi, Takashi Imaizumi, Yuki Iwadate, Takao Kobayashi, Seiichiro Toyoda
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Publication number: 20060137580Abstract: An incombustible withdrawing system withdraws an incombustible from a fluidized-bed furnace having a fluidized bed formed therein by a fluidized medium. The incombustible withdrawing system has a mixture delivery path to deliver a mixture of the fluidized medium and the incombustible from a bottom of the fluidized-bed furnace. The incombustible withdrawing system also has a fluidized-bed separating chamber disposed downstream of the mixture delivery path to fluidize the mixture by a fluidizing gas and to separate the mixture into a first separated mixture and a second separated mixture. The incombustible withdrawing system includes a return passage to return the first separated mixture to the fluidized-bed furnace, and an incombustible discharge passage to discharge the second separated mixture to an exterior of the fluidized-bed furnace.Type: ApplicationFiled: January 27, 2006Publication date: June 29, 2006Inventors: Norihisa Miyoshi, Yasuhiro Sawada, Tatsuya Hasegawa, Koh Sasaki
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Publication number: 20060137579Abstract: A gasification system has a gasification furnace (1) for gasifying wastes to produce a combustible gas and a combustion furnace (2) for combusting char and/or tar produced by gasification in the gasification furnace (1). The gasification system also has a return line for returning a combustion gas discharged from the combustion furnace (2) to the gasification furnace (1) and the combustion furnace (2).Type: ApplicationFiled: July 23, 2004Publication date: June 29, 2006Inventors: Hiroyuki Fujimura, Takahiro Oshita, Norihisa Miyoshi, Seiichiro Toyoda, Kei Matsuoka, Tatsuya Hasegawa
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Patent number: 7025007Abstract: An incombustible withdrawing system withdraws an incombustible from a fluidized-bed furnace having a fluidized bed formed therein by a fluidized medium. The incombustible withdrawing system has a mixture delivery path to deliver a mixture of the fluidized medium and the incombustible from a bottom of the fluidized-bed furnace. The incombustible withdrawing system also has a fluidized-bed separating chamber disposed downstream of the mixture delivery path to fluidize the mixture by a fluidizing gas and to separate the mixture into a first separated mixture and a second separated mixture. The incombustible withdrawing system includes a return passage to return the first separated mixture to the fluidized-bed furnace, and an incombustible discharge passage to discharge the second separated mixture to an exterior of the fluidized-bed furnace.Type: GrantFiled: March 25, 2004Date of Patent: April 11, 2006Assignee: Ebara CorporationInventors: Norihisa Miyoshi, Yasuhiro Sawada, Tatsuya Hasegawa, Koh Sasaki
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Publication number: 20060000143Abstract: A gasification furnace and a combustion furnace are integrated with each other to form a single fluidized-bed gasification and combustion furnace in which unburned char generated in the gasification furnace is combusted in the combustion furnace, and the thus generated heat of combustion is utilized as a heat source for gasification. The fluidized-bed gasification and combustion furnace (1) comprises a gasification furnace (3) and a combustion furnace (4) which are divided by a first partition wall (2). In the gasification furnace (3), a revolving flow of the fluidized medium is formed by diffusion devices (32, 33) provided on furnace bottoms, and an upward flow of the fluidized medium partly flows in the combustion furnace (4). The combustion furnace (4) is divided into a main partition wall (5).Type: ApplicationFiled: August 25, 2005Publication date: January 5, 2006Inventors: Shuichi Nagato, Takahiro Oshita, Norihisa Miyoshi, Seiichiro Toyoda, Shugo Hosoda, Nobutaka Kashima, Katsutoshi Naruse
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Patent number: 6949224Abstract: The present invention provides a fuel gasification furnace including a gasification chamber (1) for fluidizing a high-temperature fluidizing medium therein to form a gasification chamber fluidized bed having an interface, and for gasifying a fuel in the gasification chamber fluidized bed, a char combustion chamber (2) for fluidizing a high-temperature fluidizing medium therein to form a char combustion chamber fluidized bed having an interface, and for combusting char generated by gasification in the gasification chamber (1) in the char combustion chamber fluidized bed to heat the fluidizing medium, and a first energy recovery device (109) for using gases generated by the gasification chamber (1) as a fuel. The gasification chamber (1) and the char combustion chamber (2) are integrated with each other.Type: GrantFiled: December 18, 1998Date of Patent: September 27, 2005Assignee: Ebara CorporationInventors: Norihisa Miyoshi, Seiichiro Toyoda, Shugo Hosoda, Nobutaka Kashima, Katsutoshi Naruse, Katsuyuki Aoki, Shinji Sekikawa, Shuichi Nagato, Hiroshi Hashimoto
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Publication number: 20050144844Abstract: The present invention provides a fuel gasification furnace including a gasification chamber (1) for fluidizing a high-temperature fluidizing medium therein to form a gasification chamber fluidized bed having an interface, and for gasifying a fuel in the gasification chamber fluidized bed, a char combustion chamber (2) for fluidizing a high-temperature fluidizing medium therein to form a char combustion chamber fluidized bed having an interface, and for combusting char generated by gasification in the gasification chamber (1) in the char combustion chamber fluidized bed to heat the fluidizing medium, and a first energy recovery device (109) for using gases generated by the gasification chamber (1) as a fuel. The gasification chamber (1) and the char combustion chamber (2) are integrated with each other.Type: ApplicationFiled: March 8, 2005Publication date: July 7, 2005Inventors: Norihisa Miyoshi, Seiichiro Toyoda, Shugo Hosoda, Nobutaka Kashima, Katsutoshi Naruse, Katsuyuki Aoki, Shinji Sekikawa, Shuichi Nagato, Hiroshi Hashimoto
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Publication number: 20050132883Abstract: An acid gas scrubbing apparatus and method brings a gas, to be scrubbed, containing carbon dioxide into contact with a gas scrubbing liquid containing alkaline agent and cooled, and acid gases in the gas are removed. A gas scrubber removes acid gases in a gas, to be scrubbed, containing carbon dioxide by bringing the gas to be scrubbed into contact with a gas scrubbing liquid containing alkaline agent. A scrubbing liquid regenerator regenerates and cools the gas scrubbing liquid by bringing the gas scrubbing liquid into contact with a regenerating gas having components different from the gas scrubbing liquid and the gas to be scrubbed. A circulating device is provided between the gas scrubber and the scrubbing liquid regenerator for circulating the scrubbing liquid.Type: ApplicationFiled: October 18, 2004Publication date: June 23, 2005Inventors: Qingquan Su, Norihisa Miyoshi, Katsutoshi Naruse, Takahiro Oshita, Kazuo Kinoshita
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Publication number: 20050066864Abstract: An incombustible withdrawing system (302a) withdraws an incombustible from a fluidized-bed furnace (305) having a fluidized bed (312) formed therein by a fluidized medium (310). The incombustible withdrawing system (302a) has a mixture delivery path (316) to deliver a mixture (310b) of the fluidized medium and the incombustible from a bottom (311) of the fluidized-bed furnace (305). The incombustible withdrawing system (302a) also has a fluidized-bed separating chamber (390) disposed downstream of the mixture delivery path (316) to fluidize the mixture (310b) by a fluidizing gas (331) and to separate the mixture into a first separated mixture (310g) and a second separated mixture (310f). The incombustible withdrawing system (302a) includes a return passage (391, 394) to return the first separated mixture (310g) to the fluidized-bed furnace (305), and an incombustible discharge passage (392) to discharge the second separated mixture (310f) to an exterior of the fluidized-bed furnace (305).Type: ApplicationFiled: March 25, 2004Publication date: March 31, 2005Inventors: Norihisa Miyoshi, Yasuhiro Sawada, Tatsuya Hasegawa, Koh Sasaki