Patents by Inventor Noboru Takikawa
Noboru Takikawa 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: 8951490Abstract: A CO2 recovery method and apparatus for desorbing and recovering carbon dioxide with low energy consumption from a gas discharged from a power generation plant having a boiler and a steam turbine. The adsorption and the desorption of carbon dioxide are performed alternately in two CO2 absorbers and located in a CO2 recovery apparatus, which each hold a carbon dioxide adsorbent. When carbon dioxide is desorbed, steam discharged from an outlet of a steam turbine of a power generation plant is partially branched before introduced into a condenser, and sent to a steam compressor. The partially branched steam is compressed in this compressor, and then sent to a cooling device. By cooling, the steam for desorption is prepared. The steam prepared in the cooling device is supplied into a CO2 absorber to desorb carbon dioxide. Accordingly, waste steam, before it is introduced into the condenser, is usable for desorption.Type: GrantFiled: May 18, 2012Date of Patent: February 10, 2015Assignee: Kawaski Jukogyo Kabushiki KaishaInventors: Takeshi Okumura, Yoshiharu Nonaka, Tomoyuki Ogino, Takatoshi Shoji, Masatoshi Hirokawa, Noboru Takikawa, Kazuto Kamazawa
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Publication number: 20140105809Abstract: A CO2 recovery method and apparatus for desorbing and recovering carbon dioxide with low energy consumption from a gas discharged from a power generation plant having a boiler and a steam turbine. The adsorption and the desorption of carbon dioxide are performed alternately in two CO2 absorbers and located in a CO2 recovery apparatus, which each hold a carbon dioxide adsorbent. When carbon dioxide is desorbed, steam discharged from an outlet of a steam turbine of a power generation plant is partially branched before introduced into a condenser, and sent to a steam compressor. The partially branched steam is compressed in this compressor, and then sent to a cooling device. By cooling, the steam for desorption is prepared. The steam prepared in the cooling device is supplied into a CO2 absorber to desorb carbon dioxide. Accordingly, waste steam, before it is introduced into the condenser, is usable for desorption.Type: ApplicationFiled: May 18, 2012Publication date: April 17, 2014Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Takeshi Okumura, Yoshiharu Nonaka, Tomoyuki Ogino, Takatoshi Shoji, Masatoshi Hirokawa, Noboru Takikawa, Kazuto Kamazawa
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Patent number: 8653394Abstract: The present invention provides an electrostatic separation method and an electrostatic separation device each of which, even in a case where the concentration of unburned components of coal ash produced by a boiler of a coal-fired power plant is as high as 15% to 30%, can stably separate the ash without generating spark, reuse the high unburned component ash as fuel, and reuse the low unburned component ash as, for example, an auxiliary material of concrete. The electrostatic separation device may include a substantially flat plate lower side electrode and an upper side electrode including a high dielectric resin element. A separation zone is formed in a region of electrostatic force between the lower side electrode and the upper side electrode, with one of the electrodes having positive polarity and the other having negative polarity. Unburned carbon ash in the coal ash supplied to the separation zone is separated.Type: GrantFiled: October 27, 2011Date of Patent: February 18, 2014Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Noboru Takikawa, Keiichi Mashio, Manabu Masamoto, Kouji Fukumoto, Yasuhiro Mayumi
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Patent number: 8286900Abstract: A method of estimating the hydration reactivity of coal ash with high precision and determining the amount of milling water for obtaining a milling product in funicular form at the stage of milling; and a molding method being free from the problem of adhesion to a pressurization board at the stage of molding after the milling. When any collected coal ash exhibits a corrected basicity ((CaO+Fe2O3+MgO)/SiO2 (weight ratio)) of 0.1 or higher and a reactivity index (corrected basicity/(R2O/Al2O3) (weight ratio)) of 10 or higher, the coal ash as a raw ash is transferred to raw ash silo (2). Otherwise, the coal ash is transferred to waste ash silo (3). The raw ash within the raw ash silo (2) is poured in mill (8), and lime and gypsum are added and further milling water is charged thereto and milled.Type: GrantFiled: October 25, 2007Date of Patent: October 16, 2012Assignees: Kawasaki Plant Systems Kabushiki Kaisha, Japan Coal Energy Center, Kawasaki Jukogyo Kabushiki KaishaInventors: Noboru Takikawa, Yasunori Shibata, Atsushi Kondo, Tamaki Sakurai, Yoshiteru Kato, Kozo Kuga, Tomokazu Tengan, Tatsuya Ishihara, Atsushi Chinen, Yoshimichi Daijyo, Noboru Yasuda, Masahiko Doi
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Publication number: 20120043261Abstract: The present invention provides an electrostatic separation method and an electrostatic separation device each of which, even in a case where the concentration of unburned components of coal ash produced by a boiler of a coal-fired power plant is as high as 15% to 30%, can stably separate the ash without generating spark, reuse the high unburned component ash as fuel, and reuse the low unburned component ash as, for example, an auxiliary material of concrete. The electrostatic separation device may include a substantially flat plate lower side electrode and an upper side electrode including a high dielectric resin element. A separation zone is formed in a region of electrostatic force between the lower side electrode and the upper side electrode, with one of the electrodes having positive polarity and the other having negative polarity. Unburned carbon ash in the coal ash supplied to the separation zone is separated.Type: ApplicationFiled: October 27, 2011Publication date: February 23, 2012Applicant: KAWASAKI PLANT SYSTEMS KABUSHIKI KAISHAInventors: Noboru Takikawa, Keiichi Mashio, Manabu Masamoto, Kouji Fukumoto, Yasuhiro Mayumi
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Patent number: 8071904Abstract: The present invention provides an electrostatic separation method and an electrostatic separation device each of which, even in a case where the concentration of unburned components of coal ash produced by a boiler of a coal-fired power plant is as high as 15% to 30%, can stably separate the ash (into high unburned component ash and low unburned component ash) without generating spark, reuse the high unburned component ash as fuel, and reuse the low unburned component ash as, for example, an auxiliary material of concrete.Type: GrantFiled: October 26, 2006Date of Patent: December 6, 2011Assignee: Kawasaki Jukogyo Kabushiki KaishaInventors: Noboru Takikawa, Keiichi Mashio, Manabu Masamoto, Kouji Fukumoto, Yasuhiro Mayumi
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Publication number: 20100108788Abstract: A method of estimating the hydration reactivity of coal ash with high precision and determining the amount of milling water for obtaining a milling product in funicular form at the stage of milling; and a molding method being free from the problem of adhesion to a pressurization board at the stage of molding after the milling. When any collected coal ash exhibits a corrected basicity ((CaO+Fe2O3+MgO)/SiO2 (weight ratio)) of 0.1 or higher and a reactivity index (corrected basicity/(R2O/Al2O3) (weight ratio)) of 10 or higher, the coal ash as a raw ash is transferred to raw ash silo (2). Otherwise, the coal ash is transferred to waste ash silo (3). The raw ash within the raw ash silo (2) is poured in mill (8), and lime and gypsum are added and further milling water is charged thereto and milled.Type: ApplicationFiled: October 25, 2007Publication date: May 6, 2010Applicant: Kawasaki Plant Systems Kabushiki KaishaInventors: Noboru Takikawa, Yasunori Shibata, Atsushi Kondo, Tamaki Sakurai, Yoshiteru Kato, Kozo Kuga, Tomokazu Tengan, Tatsuya Ishihara, Atsushi Chinen, Yoshimichi Daijyo, Noboru Yasuda, Masahiko Doi
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Publication number: 20090065402Abstract: [Object]The present invention provides an electrostatic separation method and an electrostatic separation device each of which, even in a case where the concentration of unburned components of coal ash produced by a boiler of a coal-fired power plant is as high as 15% to 30%, can stably separate the ash (into high unburned component ash and low unburned component ash) without generating spark, reuse the high unburned component ash as fuel, and reuse the low unburned component ash as, for example, an auxiliary material of concrete.Type: ApplicationFiled: October 26, 2006Publication date: March 12, 2009Applicant: Kawasaki Plant Systems Kabushiki KaishaInventors: Noboru Takikawa, Keiichi Mashio, Manabu Masamoto, Kouji Fukumoto, Yasuhiro Mayumi