Patents by Inventor Chang-Keun Yi
Chang-Keun Yi 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: 10852211Abstract: Disclosed herein are an apparatus and method for gas leakage measurement in a high pressure reactor. In particular, the present invention relates to an apparatus for gas leakage measurement in a high pressure reactor including: a gas inlet; a first valve equipped to one side of the gas inlet; a flowmeter; a pressure gauge measuring an internal pressure of the reactor; a gas outlet; and a second valve, wherein if in internal pressure reaches a preset pressure by closing the second valve and injecting a gas to the reactor through the flowmeter in the state of opening the first valve, the gas leakage status in the reactor is measured through pressure changes in the pressure gauge after closing the first valve.Type: GrantFiled: June 18, 2018Date of Patent: December 1, 2020Assignee: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Ho-jung Ryu, Doyeon Lee, Gyoung-tae Jin, Chang-keun Yi, Do-won Shun, Jae-hyeon Park, Dal-hee Bae, Sung-ho Jo, Seung-yong Lee, Young Cheol Park, Jong-ho Moon, Dong-ho Lee
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Patent number: 10569247Abstract: The present invention is directed to a high pressure fluidized bed system using dual control valves, and an inner pressure control method thereof. The high pressure fluidized bed system includes a fluidized bed reactor, a pressure sensor which measures a pressure in the interior of the fluidized bed reactor, a cyclone part which is coupled to the fluidized bed reactor, a first valve allowing controlling of the exhaust gas, and a second valve allowing manually controlling of exhaust gas except for the exhaust gas controlled by the first valve. The first valve is capable of opening and closing automatically, and the second valve is capable of opening and closing manually, and are used in combination in the high pressure fluidized bed, allowing decreasing of the pressure variation within the reactor and improving the operation stability of the reactor.Type: GrantFiled: June 19, 2019Date of Patent: February 25, 2020Assignee: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Ho-Jung Ryu, Doyeon Lee, Sung-Ho Jo, Hyungseok Nam, Gyoung-Tae Jin, Chang-Keun Yi, Dowon Shun, Jaehyeon Park, Dal-Hee Bae, Seung-Yong Lee, Youngcheol Park, Dong-Ho Lee
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Publication number: 20190323916Abstract: Disclosed herein are an apparatus and method for gas leakage measurement in a high pressure reactor. In particular, the present invention relates to an apparatus for gas leakage measurement in a high pressure reactor including: a gas inlet; a first valve equipped to one side of the gas inlet; a flowmeter; a pressure gauge measuring an internal pressure of the reactor; a gas outlet; and a second valve, wherein if in internal pressure reaches a preset pressure by closing the second valve and injecting a gas to the reactor through the flowmeter in the state of opening the first valve, the gas leakage status in the reactor is measured through pressure changes in the pressure gauge after closing the first valve.Type: ApplicationFiled: June 18, 2018Publication date: October 24, 2019Applicant: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Ho-jung RYU, Doyeon LEE, Gyoung-tae JIN, Chang-keun YI, Do-won SHUN, Jae-hyeon PARK, Dal-hee BAE, Sung-ho JO, Seung-yong LEE, Young Cheol PARK, Jong-ho MOON, Dong-ho LEE
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Patent number: 10415822Abstract: Disclosed are an apparatus and a method for measuring the height of a solid bed in a high-temperature and high-pressure fluidized bed system, and a fluidized bed system having the solid bed height measuring apparatus. The solid bed height measuring apparatus includes a lower pressure probe mounted at an upper side as high as a first height from a gas distributor of a fluidized bed reactor to measure pressure of the mounted location, and a middle pressure probe mounted at an upper side as high as a second height from the lower probe to measure pressure of the mounted location. An upper pressure probe is mounted at the top of the fluidized bed reactor to measure the inside pressure of the fluidized bed reactor. First and second differential pressure gauges are used for measuring differential pressures.Type: GrantFiled: April 20, 2016Date of Patent: September 17, 2019Assignee: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Ho-jung Ryu, Dong-ho Lee, Gyoung-tae Jin, Do-won Shun, Chang-keun Yi, Jae-hyeon Park, Dal-hee Bae, Sung-ho Jo, Seung-yong Lee, Young Cheol Park, Jong-ho Moon
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Patent number: 10307768Abstract: The present invention relates to a CLC and operation method thereof equipped with a loop seal separator using magnetic oxygen carrier particles and a magnetic separator. And more particularly, the present invention relates to a loop seal separator using magnetic oxygen carrier particles and a magnetic separator, wherein the loop seal separator comprises a duct into which the ash and magnetic oxygen carrier particles, discharged from a reducer, flow; a magnetic separator to separate the ash from the magnetic oxygen carrier particles, flowing into the duct, by magnetic material; an ash discharge pipe to discharge the ash, separated by the magnetic separator; and an oxygen-carrier-particle discharge pipe to encourage the magnetic oxygen carrier particles, separated by the magnetic separator, to flow into an oxidizer.Type: GrantFiled: April 27, 2017Date of Patent: June 4, 2019Assignee: Korea Institute of Energy ResearchInventors: Ho-Jung Ryu, Keun-hee Han, Gyoung-tae Jin, Chang-keun Yi, Do-won Shun, Jae-hyeon Park, Dal-hee Bae, Sung-ho Jo, Seung-yong Lee, Young Cheol Park, Jong-ho Moon, Do Yeon Lee, Hyo Jin Lee, Dong-ho Lee, Jeom In Baek
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Patent number: 10272408Abstract: Disclosed is provided to overcome problems of conventional methods using each of a solid discharge nozzle and a screw conveyer. According to one exemplary embodiment of the present invention, a fluidized bed system is provided to circulate solids using pressure and density difference. More particularly, a fluidized solid circulation system using pressure and density difference is characterized by comprising: a first fluidized bed reactor; a second fluidized bed reactor; a first cyclone; a second cyclone; a first pressure control valve; a second pressure control valve; a lower loop seal; an upper loop seal; and a control part, thereby circulating the solids between the first fluidized bed reactor and the second fluidized bed reactor.Type: GrantFiled: February 22, 2018Date of Patent: April 30, 2019Assignee: Korea Institute of Energy ResearchInventors: Ho-jung Ryu, Doyeon Lee, Gyoung-tae Jin, Chang-keun Yi, Dowon Shun, Jaehyeon Park, Dal-hee Bae, Sung-ho Jo, Seung-yong Lee, Young Cheol Park, Jong-ho Moon, Dong-ho Lee
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Patent number: 10143986Abstract: The present invention relates to a fluidized bed system having a sparger capable of minimizing a blockage by solids and controlling method thereof.Type: GrantFiled: August 29, 2017Date of Patent: December 4, 2018Assignee: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Ho-Jung Ryu, Dal-hee Bae, Sung-ho Jo, Seung-yong Lee, Chang-keun Yi, Gyoung-tae Jin, Do-won Shun, Jae-hyeon Park, Young Cheol Park, Jong-ho Moon, Hyo Jin Lee, Do Yeon Lee, Dong-ho Lee, Jeom In Baek
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Publication number: 20180283682Abstract: The present invention relates to a CLC and operation method thereof equipped with a loop seal separator using magnetic oxygen carrier particles and a magnetic separator. And more particularly, the present invention relates to a loop seal separator using magnetic oxygen carrier particles and a magnetic separator, wherein the loop seal separator comprises a duct into which the ash and magnetic oxygen carrier particles, discharged from a reducer, flow; a magnetic separator to separate the ash from the magnetic oxygen carrier particles, flowing into the duct, by magnetic material; an ash discharge pipe to discharge the ash, separated by the magnetic separator; and an oxygen-carrier-particle discharge pipe to encourage the magnetic oxygen carrier particles, separated by the magnetic separator, to flow into an oxidizer.Type: ApplicationFiled: April 27, 2017Publication date: October 4, 2018Applicant: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Ho-Jung RYU, Keun-hee HAN, Gyoung-tae JIN, Chang-keun YI, Do-won SHUN, Jae-hyeon PARK, Dal-hee BAE, Sung-ho JO, Seung-yong LEE, Young Cheol PARK, Jong-ho MOON, Do Yeon LEE, Hyo Jin LEE, Dong-ho LEE, Jeom In BAEK
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Publication number: 20180272304Abstract: The present invention relates to a fluidized bed system having a sparger capable of minimizing a blockage by solids and controlling method thereof.Type: ApplicationFiled: August 29, 2017Publication date: September 27, 2018Applicant: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Ho-Jung RYU, Dal-hee BAE, Sung-ho JO, Seung-yong LEE, Chang-keun YI, Gyoung-tae JIN, Do-won SHUN, Jae-hyeon PARK, Young Cheol PARK, Jong-ho MOON, Hyo Jin LEE, Do Yeon LEE, Dong-ho LEE, Jeom In BAEK
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Patent number: 10046968Abstract: A desulfurization system removes sulfur ingredients included in synthetic gas generated from gasification of coal in a high temperature dry state. The system includes a desulfurization reactor, a desulfurization cyclone, and first and second regeneration reactors branched with the desulfurization cyclone. A first oxidizing agent is injected to a first oxidizing agent inlet of the first regeneration reactor, and a second oxidizing agent is injected to a second oxidizing agent inlet of the second regeneration reactor. A controller operates one of the first and second regeneration reactors in a regeneration mode, controlling the other to operate in a desulfurization mode.Type: GrantFiled: August 10, 2016Date of Patent: August 14, 2018Assignee: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Ho-jung Ryu, Dong-ho Lee, Gyoung-tae Jin, Do-won Shun, Chang-keun Yi, Jae-hyeon Park, Dal-hee Bae, Sung-ho Jo, Seung-yong Lee, Young Cheol Park, Jong-ho Moon, Hyo Jin Lee, Jeom In Baek
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Patent number: 9963400Abstract: A system for preventing a catalyst from overheating is provided. The system includes: a first reactor filled with a catalyst at least in part and configured to receive reaction gas and produce product gas; and a second reactor configured to cool a catalyst discharged from the first reactor. The catalyst is circulated between the first reactor and the second reactor by injecting the catalyst cooled in the second reactor into the first rector.Type: GrantFiled: August 26, 2016Date of Patent: May 8, 2018Assignee: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Ho-jung Ryu, Dong-ho Lee, Gyoung-tae Jin, Do-won Shun, Chang-keun Yi, Jae-hyeon Park, Dal-hee Bae, Sung-ho Jo, Seung-yong Lee, YoungCheol Park, Jong-ho Moon, Ji-bong Joo
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Publication number: 20170268768Abstract: Disclosed are an apparatus and a method for measuring the height of a solid bed in a high-temperature and high-pressure fluidized bed system, and a fluidized bed system having the solid bed height measuring apparatus. The solid bed height measuring apparatus includes a lower pressure probe mounted at an upper side as high as a first height from a gas distributor of a fluidized bed reactor to measure pressure of the mounted location, and a middle pressure probe mounted at an upper side as high as a second height from the lower probe to measure pressure of the mounted location. An upper pressure probe is mounted at the top of the fluidized bed reactor to measure the inside pressure of the fluidized bed reactor. First and second differential pressure gauges are used for measuring differential pressures.Type: ApplicationFiled: April 20, 2016Publication date: September 21, 2017Inventors: Ho-jung RYU, Dong-ho LEE, Gyoung-tae JIN, Do-won SHUN, Chang-keun YI, Jae-hyeon PARK, Dal-hee BAE, Sung-ho JO, Seung-yong LEE, Young Cheol PARK, Jong-ho MOON
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Patent number: 9725374Abstract: A system for preventing a catalyst from overheating is provided. The system includes: a first reactor filled with a catalyst at least in part and configured to receive reaction gas and produce product gas; and a second reactor configured to cool a catalyst discharged from the first reactor. The catalyst is circulated between the first reactor and the second reactor by injecting the catalyst cooled in the second reactor into the first rector.Type: GrantFiled: November 13, 2014Date of Patent: August 8, 2017Assignee: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Ho-jung Ryu, Dong-ho Lee, Gyoung-tae Jin, Do-won Shun, Chang-keun Yi, Jae-hyeon Park, Dal-hee Bae, Sung-ho Jo, Seung-yong Lee, YoungCheol Park, Jong-ho Moon, Ji-bong Joo
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Patent number: 9683737Abstract: A chemical looping combustion apparatus for solid fuels using different oxygen carriers is provided. The chemical looping combustion apparatus includes: a solid fuel chemical looping combustor configured to receive solid fuels and to produce carbon dioxide and steam by combustion of the solid fuels; a gaseous fuel chemical looping combustor configured to receive gaseous fuels and to produce carbon dioxide and steam by combustion of the gaseous fuels; and a devolatilization reactor configured to produce solids and gases by devolatilizing the solid fuels, and the solid fuels received by the solid fuel chemical looping combustor and the gaseous fuels received by the gaseous fuel chemical looping combustor are the solids and the gases produced by the devolatilization reactor, respectively. Accordingly, a reaction rate and an amount of oxygen transfer can increase, and necessity for low-priced oxygen carriers and a make-up cost of low-priced oxygen carriers can be reduced.Type: GrantFiled: July 1, 2014Date of Patent: June 20, 2017Assignee: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Ho-jung Ryu, Gyoung-tae Jin, Chang-keun Yi, Do-won Shun, Jae-hyeon Park, Dal-hee Bae, Sung-ho Jo, Seung-yong Lee, YoungCheol Park, Jong-ho Moon, Dong-ho Lee, Ji-bong Joo
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Publication number: 20170044014Abstract: A desulfurization system removes sulfur ingredients included synthetic gas generated from gasification of coal in a high temperature dry state. The system includes a desulfurization reactor, a desulfurization cyclone, and first and second regeneration reactors branched in the desulfurization cyclone. A first oxidizing agent is injected to a first oxidizing agent inlet of the first regeneration reactor, and a second oxidizing agent is injected to a second oxidizing agent inlet of the second regeneration reactor. A controller operates one of the first and second regeneration reactors in a regeneration mode, controlling the other to operate in a desulfurization mode.Type: ApplicationFiled: August 10, 2016Publication date: February 16, 2017Inventors: Ho-jung RYU, Dong-ho LEE, Gyoung-tae JIN, Do-won SHUN, Chang-keun YI, Jae-hyeon PARK, Dal-hee BAE, Sung-ho JO, Seung-yong LEE, Young Cheol PARK, Jong-ho MOON, Hyo Jin Lee, Jeom In Baek
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Patent number: 9566563Abstract: A method for preparing a carbon dioxide absorbent based on natural biomass, and a carbon dioxide absorbent based on natural biomass that is prepared by the method. The method utilizes alkali metal or alkaline earth metal components, such as Ca, Ma and K, inherent to a natural plant biomass material. The method can provide a carbon dioxide absorbent with improved performance in an environmentally friendly manner at greatly reduced cost.Type: GrantFiled: February 4, 2013Date of Patent: February 14, 2017Assignee: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Hee-Yeon Kim, Chang-Keun Yi, Yeo-Il Yoon, Young-Cheol Park, Hong-Soo Kim, Seong-Ok Han
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Publication number: 20160362348Abstract: A system for preventing a catalyst from overheating is provided. The system includes: a first reactor filled with a catalyst at least in part and configured to receive reaction gas and produce product gas; and a second reactor configured to cool a catalyst discharged from the first reactor. The catalyst is circulated between the first reactor and the second reactor by injecting the catalyst cooled in the second reactor into the first rector.Type: ApplicationFiled: August 26, 2016Publication date: December 15, 2016Inventors: Ho-jung RYU, Dong-ho LEE, Gyoung-tae JIN, Do-won SHUN, Chang-keun YI, Jae-hyeon Park, Dal-hee BAE, Sung-ho JO, Seung-yong LEE, YoungCheol PARK, Jong-ho MOON, Ji-bong JOO
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Publication number: 20160046540Abstract: A system for preventing a catalyst from overheating is provided. The system includes: a first reactor filled with a catalyst at least in part and configured to receive reaction gas and produce product gas; and a second reactor configured to cool a catalyst discharged from the first reactor. The catalyst is circulated between the first reactor and the second reactor by injecting the catalyst cooled in the second reactor into the first rector.Type: ApplicationFiled: November 13, 2014Publication date: February 18, 2016Inventors: Ho-jung Ryu, Dong-ho Lee,, Gyoung-tae Jin, Do-won Shun, Chang-keun Yi, Jae-hyeon Park, Dal-hee Bae, Sung-ho Jo, Seung-yong Lee, YoungCheol Park, Jong-ho Moon, Ji-bong Joo
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Patent number: 9192904Abstract: A fluidized bed reactor is provided. The fluidized bed reactor includes a screw conveyor configured to penetrate through an upper portion of the fluidized bed reactor and to discharge solid particles to an outside from the fluidized bed reactor. The screw conveyor is configured to have an upper end protrude from the upper portion of the fluidized bed reactor and a lower end located at a height equal to or higher than a height of a distributor of the fluidized bed reactor.Type: GrantFiled: November 13, 2014Date of Patent: November 24, 2015Assignee: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Ho-jung Ryu, Dong-ho Lee, Gyoung-tae Jin, Do-won Shun, Chang-keun Yi, Jae-hyeon Park, Dal-hee Bae, Sung-ho Jo, Seung-yong Lee, YoungCheol Park, Jong-ho Moon, Ji-bong Joo
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Publication number: 20150174546Abstract: The present invention relates to a fluidized bed reactor capable of varying flow velocity, in which the flow velocity in the fluidized bed reactor varies to maintain the smooth transportation of solid particles while increasing the concentration of a gaseous reactant in relation to the solid particles. The fluidized bed reactor comprises: a lower high-speed unit into which solid particles and fluid particles are introduced; a middle low-speed unit continuously connected to an upper portion of the lower high-speed unit so that the flow velocity therein becomes lower than that in the lower high-speed unit; and an upper high-speed unit continuously connected to an upper portion of the middle low-speed unit so that the flow velocity therein becomes higher than that in the middle low-speed unit.Type: ApplicationFiled: May 21, 2013Publication date: June 25, 2015Applicant: KOREA INSTITUTE OF ENERGY RESEARCHInventors: Chang-Keun Yi, Ho-Jung Ryu, Young-Cheol Park, Sung-Ho Jo, Gyoung Tae Jin, Dowon Shun, Dal-Hee Bae, Jaehyeon Park, Seung-Yong Lee, Jong-Ho Moon, Dong-Ho Lee