Patents Assigned to The Kansai Electric Power Co., Inc.
  • Patent number: 10137407
    Abstract: An absorbent is prepared by dissolving in water 1) monoethanolamine (MEA) and 2) a primary amine represented by the following formula (1) and having high steric hindrance. Releasability of CO2 or H2S during regeneration of the absorbent is thereby improved, and the amount of water vapor used during regeneration of the absorbent in a facility for recovering CO2 or H2S can be reduced. R1 to R3: H or a hydrocarbon group having 1 to 3 carbon atoms, at least one of R1 to R3 being a hydrocarbon.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: November 27, 2018
    Assignees: MITSUBISHI HEAVY INDUSTRIES ENGINEERING, LTD., THE KANSAI ELECTRIC POWER CO., INC.
    Inventors: Hiroshi Tanaka, Hiromitsu Nagayasu, Takuya Hirata, Tsuyoshi Oishi, Takashi Kamijo
  • Publication number: 20180280867
    Abstract: An absorbent liquid which absorbs at least one of CO2 and H2S from a gas, including a secondary linear monoamine; a tertiary linear monoamine or a sterically hindered primary monoamine; and a secondary cyclic diamine, wherein a concentration of each of the secondary linear monoamine, the tertiary linear monoamine or the sterically hindered primary monoamine; and the secondary cyclic diamine is less than 30% by weight.
    Type: Application
    Filed: September 23, 2016
    Publication date: October 4, 2018
    Applicants: Mitsubishi Heavy Industries Engineering, Ltd., The Kansai Electric Power Co., Inc.
    Inventors: Hiroshi Tanaka, Takuya Hirata, Masami Kondo, Takashi Kamijo, Tatsuya Tsujiuchi
  • Publication number: 20180283799
    Abstract: A geothermal heat utilization system includes a heat source well facility, a heat source device having a refrigeration cycle including a compressor, a condenser, an expanded portion, and an evaporator, a primary refrigerant circuit that is connected to a first unit which is one of the condenser and the evaporator of the heat source device, heat exchange being able to be performed between the first unit and the well-side pipe, a secondary refrigerant circuit that is connected to a second unit which is the other of the condenser and the evaporator of the heat source device, heat exchange being able to be performed between the second unit and a load, and a mode switching unit that switches between a cold heat storage operation mode in which the primary refrigerant circuit is connected to the evaporator and the secondary refrigerant circuit is connected to the condenser and a cold heat discharge operation mode in which the primary refrigerant circuit is connected to the condenser and the secondary refrigerant cir
    Type: Application
    Filed: March 23, 2018
    Publication date: October 4, 2018
    Applicants: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD., THE KANSAI ELECTRIC POWER CO., INC., OSAKA CITY UNIVERSITY, NEWJEC Inc.
    Inventors: Masanobu SAKAI, Takeshi FUCHIMOTO, Rinnichi SAI, Yasuhisa NAKASO, Shinsuke SAKAE, Masaki NAKAO, Masatoshi NISHIOKA, Kazuhiro NAKAMURA
  • Patent number: 10000383
    Abstract: A CO2 recovery apparatus capable of recovering CO2 by using only a low-quality exhaust heat at 100° C. or less is provided. The present invention includes an absorption tower for allowing a basic aqueous solution to absorb CO2; and a regenerator for heating a basic aqueous solution with CO2 absorbed therein using a heating medium having a temperature of 100° C. or less, thereby desorbing CO2.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: June 19, 2018
    Assignee: THE KANSAI ELECTRIC POWER CO., INC.
    Inventors: Tsunenori Watanabe, Tetsuo Sasaki, Michio Hirose, Yasuyuki Yagi, Hiroshi Deguchi
  • Publication number: 20180117571
    Abstract: This invention provides a CO2 desorption catalyst that has an excellent CO2 desorption activity and that can be used to replace metal filler. This invention provides a CO2 desorption catalyst comprising an inorganic powder or inorganic powder compact, the inorganic powder or inorganic powder compact having a BET specific surface area of 7 m2/g or more.
    Type: Application
    Filed: December 22, 2017
    Publication date: May 3, 2018
    Applicant: THE KANSAI ELECTRIC POWER CO., INC.
    Inventors: Hiroshi Deguchi, Tsunenori Watanabe, Yasuyuki Yagi
  • Patent number: 9914088
    Abstract: A CO2 recovery unit for recovery and removal of CO2 in a CO2-containing flue gas using a CO2-absorbent within a CO2 absorber is provided. The CO2 absorber includes a CO2-absorbing unit for the absorption of CO2 in a CO2-containing flue gas, a main water rinsing unit that is provided on a gas flow downstream side of the CO2-absorbing unit and that uses rinsing water to recover the accompanying CO2-absorbent while cooling decarbonated flue gas, and a preliminary water rinsing unit provided between the CO2-absorbing unit and the main water rinsing unit. A portion of the rinsing water containing the CO2-absorbent that is circulated in the main water rinsing unit is withdrawn and is subjected to preliminary water rinsing in the preliminary water rinsing unit. The preliminary rinsing water is allowed to meet with a CO2-absorbent while allowing the rinsing water to directly flow down on the CO2-absorbing unit side.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: March 13, 2018
    Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., THE KANSAI ELECTRIC POWER CO., INC.
    Inventors: Hiroshi Tanaka, Hiromitsu Nagayasu, Takuya Hirata, Tsuyoshi Oishi, Takashi Kamijo
  • Patent number: 9907533
    Abstract: According to one embodiment, an ultrasonic diagnosis apparatus includes a display unit to display an ultrasonic image, a comparison unit to compare the signal/echo intensity of a cardiac chamber portion of an ultrasonic image with the signal/echo intensity of a myocardial portion of the image, and an indication generating unit to generate a specific indication at a time point when the signal/echo intensity of the cardiac chamber portion changes from a higher value to a lower value than the signal/echo intensity of the myocardial portion or at another time point with reference to the time point.
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: March 6, 2018
    Assignees: Toshiba Medical Systems Corporation, THE KANSAI ELECTRIC POWER CO., INC.
    Inventors: Tetsuya Kawagishi, Katsuhisa Ishii
  • Patent number: 9662607
    Abstract: A CO2 recovery unit includes an absorber that reduces CO2 in flue gas (101) discharged from a combustion facility (50) by absorbing CO2 by an absorbent, a regenerator that heats the absorbent having absorbed CO2 to emit CO2, and regenerates and supplies the absorbent to the absorber, and a regenerating heater that uses steam (106) supplied from the combustion facility (50) for heating the absorbent in the regenerator and returns heated condensed water (106a) to the combustion facility (50). The CO2 recovery unit further includes a condensed water/flue gas heat exchanger (57) that heats the condensed water (106a) to be returned from the regenerating heater to the combustion facility (50) by heat-exchanging the condensed water (106a) with the flue gas (101) in a flue gas duct (51) in the combustion facility (50).
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: May 30, 2017
    Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., THE KANSAI ELECTRIC POWER CO., INC.
    Inventors: Tatsuya Tsujiuchi, Hiromitsu Nagayasu, Takuya Hirata, Keiji Fujikawa, Tetsuya Imai, Hiroshi Tanaka, Tsuyoshi Oishi, Masahiko Tatsumi, Yasuyuki Yagi, Kazuhiko Kaibara
  • Patent number: 9625191
    Abstract: The condensing apparatus 71 includes: a compressor 10 which has a compression part 20 compressing a working fluid; a condenser 13 which condenses the working fluid compressed by the compression part 20; and a spray mechanism 81 including a nozzle 82 which sprays a cooling fluid into a fluid passage 91 to cool the working fluid flowing through the fluid passage 91 between a discharge opening CS2 of the compression part 20 and an inlet 13a of the condenser 13.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: April 18, 2017
    Assignees: Tokyo Electric Power Company, Incorporated, Chubu Electric Power Company, Incorporated, THE KANSAI ELECTRIC POWER CO., INC., Kobe Steel, Ltd., DANISH TECHNOLOGICAL INSTITUTE, JOHNSON CONTROLS DENMARK APS
    Inventors: Ryo Fujisawa, Masatake Toshima, Yoshihiro Nakayama, Yoshitaka Baba, Satoshi Ide, Koichiro Iizuka, Kunihiko Suto, Hiroshi Egawa, Ichirou Sakuraba, Daisuke Hayashi, Keiji Sugano, Hans Madsboll, Klaus Damgaard Kristensen
  • Patent number: 9623365
    Abstract: An absorbent regenerator includes: a rich solution supply line; a lean solution supply line; a lean-rich solution heat exchanger that is provided at an intersection of the lean solution supply line and the rich solution supply line; a branch portion that branches some of the rich solution at a downstream side of the lean-rich solution heat exchanger on the rich solution supply line; and a first mixing portion that mixes the some of the rich solution branched at the branch portion with a semi-lean solution, wherein a front end of a branch line through which the some of the branched rich solution is supplied is connected to a solution storage portion of the semi-lean solution which is located at an upper stage side of the absorbent regenerator divided into parts, and the some of the branched rich solution is mixed with the semi-lean solution.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: April 18, 2017
    Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., THE KANSAI ELECTRIC POWER CO., INC.
    Inventors: Hiroshi Tanaka, Takuya Hirata, Tsuyoshi Oishi, Takahiko Endo, Hiroaki Ito
  • Patent number: 9494154
    Abstract: The refrigerator includes: a cooling-water line having a cooling-water pump to thereby send water for cooling a refrigerant inside of a condenser; a lubricating-water supply line connecting the part downstream from the cooling-water pump on the cooling-water line and a compressor 4 and supplying water flowing through the cooling-water line as a lubricant to the compressor 4; and a backup portion supplying water to the lubricating-water supply line instead of supplying water from the cooling-water line when the cooling-water pump is not driven.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: November 15, 2016
    Assignees: Tokyo Electric Power Company, Incorporated, Chubu Electric Power Company, Incorporated, THE KANSAI ELECTRIC POWER CO., INC., KABUSHI KAISHA KOBE SEIKO SHO, DANISH TECHNOLOGICAL INSTITUTE, JOHNSON CONTROLS DENMARK APS
    Inventors: Ryo Fujisawa, Masatake Toshima, Toshikatsu Kanemura, Yoshihiro Nakayama, Koichiro Iizuka, Satoshi Ide, Kunihiko Suto, Kazutaka Kurashige, Ichirou Sakuraba, Daisuke Hayashi, Keiji Sugano, Shinji Shato, Hans Madsboll, Klaus Damgaard Kristensen
  • Publication number: 20160271557
    Abstract: A CO2 recovery unit includes an absorber that reduces CO2 in flue gas (101) discharged from a combustion facility (50) by absorbing CO2 by an absorbent, a regenerator that heats the absorbent having absorbed CO2 to emit CO2, and regenerates and supplies the absorbent to the absorber, and a regenerating heater that uses steam (106) supplied from the combustion facility (50) for heating the absorbent in the regenerator and returns heated condensed water (106a) to the combustion facility (50). The CO2 recovery unit further includes a condensed water/flue gas heat exchanger (57) that heats the condensed water (106a) to be returned from the regenerating heater to the combustion facility (50) by heat-exchanging the condensed water (106a) with the flue gas (101) in a flue gas duct (51) in the combustion facility (50).
    Type: Application
    Filed: June 1, 2016
    Publication date: September 22, 2016
    Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., THE KANSAI ELECTRIC POWER CO., INC.
    Inventors: Tatsuya Tsujiuchi, Hiromitsu Nagayasu, Takuya Hirata, Keiji Fujikawa, Tetsuya Imai, Hiroshi Tanaka, Tsuyoshi Oishi, Masahiko Tatsumi, Yasuyuki Yagi, Kazuhiko Kaibara
  • Publication number: 20160256816
    Abstract: An absorbent regenerator includes: a rich solution supply line; a lean solution supply line; a lean-rich solution heat exchanger that is provided at an intersection of the lean solution supply line and the rich solution supply line; a branch portion that branches some of the rich solution at a downstream side of the lean-rich solution heat exchanger on the rich solution supply line; and a first mixing portion that mixes the some of the rich solution branched at the branch portion with a semi-lean solution, wherein a front end of a branch line through which the some of the branched rich solution is supplied is connected to a solution storage portion of the semi-lean solution which is located at an upper stage side of the absorbent regenerator divided into parts, and the some of the branched rich solution is mixed with the semi-lean solution.
    Type: Application
    Filed: October 10, 2014
    Publication date: September 8, 2016
    Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., THE KANSAI ELECTRIC POWER CO., INC.
    Inventors: Hiroshi Tanaka, Takuya Hirata, Tsuyoshi Oishi, Takahiko Endo, Hiroaki Ito
  • Patent number: 9421491
    Abstract: The CO2 recovery apparatus is provided with a CO2 absorption portion for absorbing CO2 in a CO2-containing exhaust gas by a CO2 absorbing liquid, a water washing portion provided on the upper portion side of the CO2 absorption portion so as to cool a CO2-removed exhaust gas and also recover the accompanying CO2 absorbing liquid, a washing liquid circulation line for directly circulating a washing liquid containing the CO2 absorbing liquid recovered in the water washing portion, an extraction line for extracting part of the washing liquid containing the CO2 absorbing liquid as an extracted liquid from the washing liquid circulation line, a concentration portion for separating a gas component (water vapor) from the extracted liquid while concentrating the CO2 absorbing liquid, and a concentrated liquid feed line for feeding a concentrated liquid concentrated in the concentration portion to the side of an absorbing liquid regeneration tower.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: August 23, 2016
    Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., THE KANSAI ELECTRIC POWER CO., INC.
    Inventors: Tatsuya Tsujiuchi, Hiroshi Tanaka, Hiromitsu Nagayasu, Takuya Hirata, Tsuyoshi Oishi, Takashi Kamijo, Masahiko Tatsumi, Yasuyuki Yagi, Kazuhiko Kaibara
  • Publication number: 20160220947
    Abstract: A composite amine absorbent is an absorbent dissolved in water for absorbing CO2 or H2S in gas, or both of them, which comprises: 1) at least one amine compound, and 2) a disulfide compound as an oxidative degradation inhibitor for the absorbent, wherein the disulfide compound is a compound represented by the following Chemical Formula (I). R1—S—S—R2??(I) in the formula, or R1 or R2 is any one of an alkyl group with 1 to 4 carbon atoms, a hydroxyethyl group, a carhoxyethyl group, a cyclohexyl group, and a dibutylthiocarbamoyl group.
    Type: Application
    Filed: October 10, 2014
    Publication date: August 4, 2016
    Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., THE KANSAI ELECTRIC POWER CO., INC.
    Inventors: Hiroshi Tanaka, Takuya Hirata, Tsuyoshi Oishi, Takahiko Endo, Shimpei Kawasaki
  • Patent number: 9399189
    Abstract: A CO2 recovery device includes a cooling tower including a cooling unit for bringing the flue gas, which contains CO2, into contact with water so as to cool flue gas; a CO2-absorbing unit for bringing the flue gas into contact with a CO2 absorbent (lean solution) so as to remove CO2 from flue gas; and a regenerator including an absorbent regenerating unit for releasing CO2 from a rich solution so as to regenerate the CO2 absorbent. The CO2-absorbing unit includes: a cocurrent flow CO2-absorbing unit provided in a cocurrent flow CO2 absorber, for bringing the flue gas into contact with the CO2 absorbent in a cocurrent flow so as to remove CO2 from flue gas and a countercurrent CO2-absorbing unit provided in a CO2 absorber, for bringing the flue gas into contact with the CO2 absorbent in a countercurrent flow so as to remove CO2 from flue gas.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: July 26, 2016
    Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., THE KANSAI ELECTRIC POWER CO., INC.
    Inventors: Tatsuya Tsujiuchi, Hiroshi Tanaka, Hiromitsu Nagayasu, Takuya Hirata, Tsuyoshi Oishi, Masahiko Tatsumi, Koji Kadono
  • Patent number: 9383101
    Abstract: A CO2 recovery unit includes an absorber that reduces CO2 in flue gas (101) discharged from a combustion facility (50) by absorbing CO2 by an absorbent, a regenerator that heats the absorbent having absorbed CO2 to emit CO2, and regenerates and supplies the absorbent to the absorber, and a regenerating heater that uses steam (106) supplied from the combustion facility (50) for heating the absorbent in the regenerator and returns heated condensed water (106a) to the combustion facility (50). The CO2 recovery unit further includes a condensed water/flue gas heat exchanger (57) that heats the condensed water (106a) to be returned from the regenerating heater to the combustion facility (50) by heat-exchanging the condensed water (106a) with the flue gas (101) in a flue gas duct (51) in the combustion facility (50).
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: July 5, 2016
    Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., THE KANSAI ELECTRIC POWER CO., INC.
    Inventors: Tatsuya Tsujiuchi, Hiromitsu Nagayasu, Takuya Hirata, Keiji Fujikawa, Tetsuya Imai, Hiroshi Tanaka, Tsuyoshi Oishi, Masahiko Tatsumi, Yasuyuki Yagi, Kazuhiko Kaibara
  • Patent number: 9341101
    Abstract: A system for collecting carbon dioxide in flue gas includes a stack that discharges flue gas discharged from an industrial facility to outside, a blower that is installed at the downstream side of the stack and draws the flue gas therein, a carbon-dioxide collecting device that collects carbon dioxide in the flue gas drawn in by the blower, and a gas flow sensor arranged near an exit side within the stack. A drawing amount of the flue gas by the blower to the carbon-dioxide collecting device is increased until an flow rate of the flue gas from the stack becomes zero in the gas flow sensor, and when the discharged amount of flue gas from the stack becomes zero, drawing in any more than that amount is stopped, and the carbon dioxide in the flue gas is collected while the flue gas is drawn in by a substantially constant amount.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: May 17, 2016
    Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., THE KANSAI ELECTRIC POWER CO., INC.
    Inventors: Masaki Iijima, Takashi Kamijo, Yasuyuki Yagi, Kouki Ogura
  • Patent number: 9254462
    Abstract: In a reclaiming apparatus (106) that includes an airtight container (106a) as an absorbent storing unit that stores a part of an absorbent that absorbs CO2 included in an exhaust gas and a heating unit that heats the absorbent stored in the airtight container (106a), a part of the absorbent stored in the airtight container (106a) is distributed, and a gaseous body is brought into counterflow contact with the absorbent that is distributed. As a result, since the gaseous body is brought into counterflow contact with a part of the absorbent stored in the absorbent storing unit, an absorbent component volatilizes and is separated from a degraded material, and the absorbent component can be extracted from the degraded material, whereby a loss of the absorbent can be reduced.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: February 9, 2016
    Assignees: MITSUBISHI HEAVY INDUSTRIES LTD., THE KANSAI ELECTRIC POWER CO., INC.
    Inventors: Masaki Iijima, Masahiko Tatsumi, Yasuyuki Yagi, Kouki Ogura
  • Patent number: 9249711
    Abstract: A system for collecting carbon dioxide in flue gas includes a stack that discharges flue gas discharged from an industrial facility to outside, a blower that is installed at the downstream side of the stack and draws the flue gas therein, a carbon-dioxide collecting device that collects carbon dioxide in the flue gas drawn in by the blower, and a gas flow sensor arranged near an exit side within the stack. A drawing amount of the flue gas by the blower to the carbon-dioxide collecting device is increased until an flow rate of the flue gas from the stack becomes zero in the gas flow sensor, and when the discharged amount of flue gas from the stack becomes zero, drawing in any more than that amount is stopped, and the carbon dioxide in the flue gas is collected while the flue gas is drawn in by a substantially constant amount.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: February 2, 2016
    Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., THE KANSAI ELECTRIC POWER CO., INC.
    Inventors: Masaki Iijima, Takashi Kamijo, Yasuyuki Yagi, Kouki Ogura