Patents by Inventor Chong-Kul Ryu
Chong-Kul Ryu 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: 10464046Abstract: The present invention relates to an aqueous gas-converting catalyst composition comprising: an active component; a support; an inorganic binder; at least one accelerator selected from the group consisting of cobalt oxide, molybdenum oxide, nickel oxide, calcium oxide, barium oxide, strontium oxide, magnesium oxide, zirconium oxide, manganese oxide and barium titania; and at least one stabilizer selected from the group consisting of magnesium oxide, zirconium oxide, stabilized zirconia, and hydrotalcite. The catalyst according to the present invention can effectively capture and separate carbon dioxide due to the excellent physical properties thereof such as packing density and abrasion resistance, and high CO conversion. Also, according to the present invention, mass production is facilitated by applying a spraying technique, and overall costs are lowered because of high yield.Type: GrantFiled: June 11, 2012Date of Patent: November 5, 2019Assignee: Korea Electric Power CorporationInventors: Joong Beom Lee, Chong Kul Ryu, Tae Hyoung Eom, Dong Hyeok Choi, Jeom In Baek, Seong Jeagarl, Seok Ran Yang
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Patent number: 10456772Abstract: The present invention relates to a method for manufacturing a carbon dioxide absorbent and to the absorbent manufactured by the method. The method comprises: (A) a step of preparing a slurry composition including a carrier composition containing a support, an inorganic binder, and a solvent; (B) a step of preparing solid particles by spray drying the thus-prepared slurry composition; (C) a step of manufacturing a carrier by dry calcining the thus-prepared solid particles; and (D) a step of receiving an amine compound into the pores of the thus-manufactured carrier. According to the absorbent of the present invention, an absorbing reaction and a regenerating reaction at a low temperature range (less than or equal to 100° C. may be conducted, and therefore, the cost for capturing CO2 in a dry capturing process may be expected to decrease.Type: GrantFiled: November 10, 2017Date of Patent: October 29, 2019Assignee: Korea Electric Power CorporationInventors: Tae Hyoung Eom, Joong Beom Lee, Chong Kul Ryu, Kyeong Sook Kim
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Publication number: 20180078920Abstract: The present invention relates to a method for manufacturing a carbon dioxide absorbent and to the absorbent manufactured by the method. The method comprises: (A) a step of preparing a slurry composition including a carrier composition containing a support, an inorganic binder, and a solvent; (B) a step of preparing solid particles by spray drying the thus-prepared slurry composition; (C) a step of manufacturing a carrier by dry calcining the thus-prepared solid particles; and (D) a step of receiving an amine compound into the pores of the thus-manufactured carrier. According to the absorbent of the present invention, an absorbing reaction and a regenerating reaction at a low temperature range (less than or equal to 100° C. may be conducted, and therefore, the cost for capturing CO2 in a dry capturing process may be expected to decrease.Type: ApplicationFiled: November 10, 2017Publication date: March 22, 2018Inventors: Tae Hyoung EOM, Joong Beom LEE, Chong Kul RYU, Kyeong Sook KIM
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Patent number: 9844766Abstract: The present invention relates to a method for manufacturing a carbon dioxide absorbent and to the absorbent manufactured by the method. The method comprises: (A) a step of preparing a slurry composition including a carrier composition containing a support, an inorganic binder, and a solvent; (B) a step of preparing solid particles by spray drying the thus-prepared slurry composition; (C) a step of manufacturing a carrier by dry calcining the thus-prepared solid particles; and (D) a step of receiving an amine compound into the pores of the thus-manufactured carrier. According to the absorbent of the present invention, an absorbing reaction and a regenerating reaction at a low temperature range (less than or equal to 100° C. may be conducted, and therefore, the cost for capturing CO2 in a dry capturing process may be expected to decrease.Type: GrantFiled: October 31, 2011Date of Patent: December 19, 2017Assignee: KOREA ELECTRIC POWER CORPORATIONInventors: Tae Hyoung Eom, Joong Beom Lee, Chong Kul Ryu, Kyeong Sook Kim
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Publication number: 20160082411Abstract: The present invention relates to a solid carbon dioxide absorbent composition for removing carbon dioxide, and includes an active material, a support, and an inorganic binder, wherein the support relates to the solid carbon dioxide absorbent composition including an aluminum compound and two or more kinds of tetravalent metal oxides.Type: ApplicationFiled: June 18, 2014Publication date: March 24, 2016Inventors: Tae Hyoung EOM, Chong Kul RYU, Joong Beom LEE, Jeom In BAEK, Kyeong Sook KIM
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Patent number: 9138682Abstract: A CO2 absorbent for exhaust gas capable of being repeatedly used in capturing and recycling of CO2 is provided. The CO2 absorbent for exhaust gas capturing CO2 included in exhaust gas is composed of solid materials including an active component at 5 to 70 wt %, a support at 5 to 70 wt %, an inorganic binder at 5 to 70 wt % and a recycling improver at 5 to 70 wt %. The CO2 absorbent for exhaust gas having such a composition meets the requirements for processes, including physical properties such as a spherical shape, an average particle size and size distribution, a tap density and attrition resistance, and has excellent CO2 absorbing capability and recycling capability. The carbon dioxide absorbent for exhaust gas satisfies physical characteristics such as spherical shape, average particle size and size distribution, tap density, attrition resistance and the like required for processes, and has excellent CO2 absorption and recycling capabilities.Type: GrantFiled: October 30, 2009Date of Patent: September 22, 2015Assignee: KOREA ELECTRIC POWER CORPORATIONInventors: Joong-Beom Lee, Chong-Kul Ryu, Won-Sik Jeon, Jeom-In Baek, Tae-Hyeong Eom
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Publication number: 20140332720Abstract: The present invention relates to a method for manufacturing a carbon dioxide absorbent and to the absorbent manufactured by the method. The method comprises: (A) a step of preparing a slurry composition including a carrier composition containing a support, an inorganic binder, and a solvent; (B) a step of preparing solid particles by spray drying the thus-prepared slurry composition; (C) a step of manufacturing a carrier by dry calcining the thus-prepared solid particles; and (D) a step of receiving an amine compound into the pores of the thus-manufactured carrier. According to the absorbent of the present invention, an absorbing reaction and a regenerating reaction at a low temperature range (less than or equal to 100° C. may be conducted, and therefore, the cost for capturing CO2 in a dry capturing process may be expected to decrease.Type: ApplicationFiled: October 31, 2011Publication date: November 13, 2014Applicant: KOREA ELECTRIC POWER CORPORATIONInventors: Tae Hyoung Eom, Joong Beom Lee, Chong Kul Ryu, Kyeong Sook Kim
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Publication number: 20140221193Abstract: The present invention relates to an aqueous gas-converting catalyst composition comprising: an active component; a support; an inorganic binder; at least one accelerator selected from the group consisting of cobalt oxide, molybdenum oxide, nickel oxide, calcium oxide, barium oxide, strontium oxide, magnesium oxide, zirconium oxide, manganese oxide and barium titania; and at least one stabilizer selected from the group consisting of magnesium oxide, zirconium oxide, stabilized zirconia, and hydrotalcite. The catalyst according to the present invention can effectively capture and separate carbon dioxide due to the excellent physical properties thereof such as packing density and abrasion resistance, and high CO conversion. Also, according to the present invention, mass production is facilitated by applying a spraying technique, and overall costs are lowered because of high yield.Type: ApplicationFiled: June 11, 2012Publication date: August 7, 2014Applicant: KOREA ELECTRIC POWER CORPORATIONInventors: Joong Beom Lee, Chong Kul Ryu, Tae Hyoung Eom, Dong Hyeok Choi, Jeom In Baek, Seong Jeagarl, Seok Ran Yang
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Publication number: 20120273720Abstract: A CO2 absorbent for exhaust gas capable of being repeatedly used in capturing and recycling of CO2 is provided. The CO2 absorbent for exhaust gas capturing CO2 included in exhaust gas is composed of solid materials including an active component at 5 to 70 wt %, a support at 5 to 70 wt %, an inorganic binder at 5 to 70 wt % and a recycling improver at 5 to 70 wt %. The CO2 absorbent for exhaust gas having such a composition meets the requirements for processes, including physical properties such as a spherical shape, an average particle size and size distribution, a tap density and attrition resistance, and has excellent CO2 absorbing capability and recycling capability. The carbon dioxide absorbent for exhaust gas satisfies physical characteristics such as spherical shape, average particle size and size distribution, tap density, attrition resistance and the like required for processes, and has excellent CO2 absorption and recycling capabilities.Type: ApplicationFiled: October 30, 2009Publication date: November 1, 2012Inventors: Joong-Beom Lee, Chong-Kul Ryu, Won-Sik Jeon, Jeom-In Baek, Tae-Hyeong Eom
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Patent number: 8110523Abstract: Disclosed herein is a method for preparing a dry regenerable sorbent which comprises the steps of obtaining a slurry through formulation, mixing, comminuting and dispersion of the sorbent raw materials, forming the slurry by spray drying to produce sorbent particles, and calcining the sorbent particles. In the step of obtaining a slurry, there is used organic additives (dispersant, a flow control agent, and an organic binder) necessary to obtain a well-dispersed, stable and free-flowing slurry in which the raw materials are present below a sub-micron level (nanosize). The organic additives are removed and decomposed through the calcining. The use of the hydrophilic and high specific surface area support allows the dry regenerable sorbent to have a high reactivity. The solid active component is used instead of a liquid amine used in a conventional wet carbon dioxide capture technology. In addition, the sorbent can be re-used through continuous sorption and regeneration processes.Type: GrantFiled: November 27, 2007Date of Patent: February 7, 2012Assignees: Korea Electric Power Corporation, Korea South-East Power Co., Ltd., Korea South Power Co., Ltd., Korea Western Power Co., Ltd., Korea Midland Power Co., Ltd., Korea East-West Power Co., Ltd.Inventors: Chong-Kul Ryu, Joong-Beom Lee, Tae-Hyoung Eom, Je-Myung Oh
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Patent number: 7820591Abstract: Disclosed herein is a dry regenerable sorbent for carbon dioxide capture from flue gas produced by fossil fuel-fired power plants including industrial boilers before being released to atmosphere or from fuel gas stream such as syngas produced by conversion of fossil fuel (e.g. gasification), by dry regenerable sorbent technology. The dry regenerable sorbent comprises: 70 wt % or less of an active component selected from solid compounds capable of being converted to metal carbonates; 70 wt % or less of a support selected from solid porous non-metallic materials capable of imparting a required specific surface area to the sorbent; and 70 wt % or less of an inorganic binder selected from cement-like, clay-like, and ceramic-like binders capable of imparting mechanical strength to the sorbent, the total weight of the solid raw materials being 100 wt %.Type: GrantFiled: January 4, 2005Date of Patent: October 26, 2010Assignees: Korea Electric Power Corporation, Korea South-East Power Co., Ltd., Korea South Power Co., Ltd., Korea Western Power Co., Ltd., Korea Midland Power Co., Ltd., Korea East-West Power Co., Ltd.Inventors: Chong-Kul Ryu, Joong-Beom Lee, Tae-Hyoung Eom, Je-Myung Oh
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Publication number: 20080119356Abstract: Disclosed herein is a dry regenerable sorbent for carbon dioxide present in fuel gases (syngases and coal gases containing hydrogen and carbon monoxide) produced by the combustion of a fossil fuel in industrial plants, including thermal power generation plants, before being released to the air atmosphere, by a dry regenerable sorbent technology. The sorbent is prepared in the shape of a semisphere by forming a green body using a spray drying technique such that it has suitable shape and particle size for a fluidized-bed process for CO2 capture. The sorbent comprises an active component selectively reacting with carbon dioxide present in a gas stream to capture the carbon dioxide, a support necessary to improve the reactivity of the active component and to maintain the shape of the sorbent, and a binder capable of binding the active component to the support to impart sufficient mechanical strength to the sorbent.Type: ApplicationFiled: November 27, 2007Publication date: May 22, 2008Inventors: Chong-Kul Ryu, Joong-Beom Lee, Tae-Hyoung Eom, Je-Myung Oh
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Publication number: 20060148642Abstract: Disclosed herein is a dry regenerable sorbent for carbon dioxide capture from flue gas produced by fossil fuel-fired power plants including industrial boilers before being released to atmosphere or from fuel gas stream such as syngas produced by conversion of fossil fuel (e.g. gasification), by dry regenerable sorbent technology. The dry regenerable sorbent comprises: 70 wt % or less of an active component selected from solid compounds capable of being converted to metal carbonates; 70 wt % or less of a support selected from solid porous non-metallic materials capable of imparting a required specific surface area to the sorbent; and 70 wt % or less of an inorganic binder selected from cement-like, clay-like, and ceramic-like binders capable of imparting mechanical strength to the sorbent, the total weight of the solid raw materials being 100 wt %.Type: ApplicationFiled: January 4, 2005Publication date: July 6, 2006Inventors: Chong-Kul Ryu, Joong-Beom Lee, Tae-Hyoung Eom, Je-Myung Oh