Patents by Inventor Won Choon Choi
Won Choon Choi 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: 11865514Abstract: Disclosed is a catalyst for producing an olefin including an oxygen carrier material and a dehydrogenation catalyst. The catalyst allows hydrogen to be converted into water by using oxygen inside the lattice of an oxide catalyst without the additional supply of oxygen, and thus, the conversion can be increased while the decrease in selectivity, which is a disadvantage of an additional oxidative dehydrogenation reaction (ODHP), is suppressed.Type: GrantFiled: May 14, 2019Date of Patent: January 9, 2024Assignees: SK GAS CO., LTD., KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Yong Ki Park, Won Choon Choi, Daesung Park, Hawon Park, Changyeol Song, Deuk Soo Park, Ung Gi Hong, Miyoung Lee
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Publication number: 20230381749Abstract: There is provided a dehydrogenation catalyst for producing olefins from alkane gases, in which a metal active component is supported on an alumina carrier containing boron. There is provided a method for preparing a dehydrogenation catalyst for producing olefins from alkane gases. The method includes impregnating alumina in a boron-containing solution and calcining it to provide a boron-alumina carrier; providing a solution containing the metal active component; impregnating the boron-alumina solution in the solution containing the metal active component and drying it; and calcining the boron-alumina carrier on which the metal active component is supported at 700° C. to 900° C.Type: ApplicationFiled: November 1, 2021Publication date: November 30, 2023Applicants: SK GAS CO., LTD., KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Daesung PARK, Hawon PARK, Changyeol SONG, Yong Ki PARK, Won Choon CHOI, Ung Gi HONG, Deuk Soo PARK, Miyoung LEE, Hae Bin SHIN, Sanghyeon PARK
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Patent number: 11684907Abstract: Disclosed is a catalyst for producing an olefin, the catalyst having an excellent conversion and excellent selectivity, and a method for preparing the catalyst. The catalyst for producing an olefin, according to the present invention, includes: a support including alumina and an auxiliary support component; a main catalyst including an active metal oxide supported on the support; and a co-catalyst including an oxide of an alkali metal and a Group 6B transition metal.Type: GrantFiled: April 15, 2019Date of Patent: June 27, 2023Assignees: SK GAS CO., LTD., KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Yong Ki Park, Won Choon Choi, Daesung Park, Hawon Park, Deuk Soo Park, Ung Gi Hong, Byungjun Kang, Miyoung Lee
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Publication number: 20230127784Abstract: The present disclosure is to provide a catalyst for olefin production which is eco-friendly and has excellent conversion rates and selectivity and a preparation method thereof, and the catalyst for olefin production according to the present disclosure is one in which cobalt and zinc are supported with alumina. Particularly, the catalyst according to the present disclosure uses an amount of platinum that is about 400 times smaller than that of the conventional catalysts, and has high conversion rates and selectivity under conditions in which continuous reaction-regeneration process is possible without an additional hydrogen reduction process.Type: ApplicationFiled: December 24, 2020Publication date: April 27, 2023Applicants: SK GAS CO., LTD., KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Daesung PARK, Hawon PARK, Changyeol SONG, Yong Ki PARK, Won Choon CHOI, Ung Gi HONG, Hae Bin SHIN, Miyoung LEE, Deuk Soo PARK
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Publication number: 20220401930Abstract: A dehydrogenation catalyst for producing olefins from alkane gases, in which cobalt and zinc are supported on alumina. A method for preparing the dehydrogenation catalyst for producing olefins from alkane gases, includes: preparing a mixed solution by mixing cobalt and zinc precursors with water; preparing a supported catalyst by impregnating alumina with the mixed solution; drying the supported catalyst; and calcining the dried supported catalyst at 500° C. to 900° C.Type: ApplicationFiled: November 24, 2020Publication date: December 22, 2022Applicants: SK GAS CO., LTD., KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Deuk Soo PARK, Ung Gi HONG, Hae Bin SHIN, Daesung PARK, Hawon PARK, Changyeol SONG, Won Choon CHOI, Yong Ki PARK
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Patent number: 11439982Abstract: Disclosed is a method of producing an olefin using a circulating fluidized bed process, including: (a) supplying a hydrocarbon mixture including propane and a dehydrogenation catalyst to a riser which is in a state of a fast fluidization regime, and thus inducing a dehydrogenation reaction; (b) separating an effluent from the dehydrogenation reaction into the catalyst and a propylene mixture; (c) stripping, in which a residual hydrocarbon compound is removed from the catalyst separated in step (b); (d) mixing the catalyst stripped in step (c) with a gas containing oxygen and thus continuously regenerating the catalyst; (e) circulating the catalyst regenerated in step (d) to step (a) and thus resupplying the catalyst to the riser; and (f) cooling, compressing, and separating the propylene mixture, which is a reaction product separated in step (b), and thus producing a propylene product.Type: GrantFiled: December 4, 2019Date of Patent: September 13, 2022Assignees: SK GAS CO., LTD., KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, KOREA NATIONAL UNIVERSITY OF TRANSPORTATION INDUSTRY-ACADEMIC COOPERATION FOUNDATIONInventors: Yong Ki Park, Won Choon Choi, Daesung Park, Hawon Park, Changyeol Song, Deuk Soo Park, Ung Gi Hong, Miyoung Lee, Sungwon Kim, Chaeeun Yeo
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Publication number: 20210354112Abstract: Disclosed is a method of producing an olefin using a circulating fluidized bed process, including: (a) supplying a hydrocarbon mixture including propane and a dehydrogenation catalyst to a riser which is in a state of a fast fluidization regime, and thus inducing a dehydrogenation reaction; (b) separating an effluent from the dehydrogenation reaction into the catalyst and a propylene mixture; (c) stripping, in which a residual hydrocarbon compound is removed from the catalyst separated in step (b); (d) mixing the catalyst stripped in step (c) with a gas containing oxygen and thus continuously regenerating the catalyst; (e) circulating the catalyst regenerated in step (d) to step (a) and thus resupplying the catalyst to the riser; and (f) cooling, compressing, and separating the propylene mixture, which is a reaction product separated in step (b), and thus producing a propylene product.Type: ApplicationFiled: December 4, 2019Publication date: November 18, 2021Applicants: SK GAS CO., LTD., KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, KOREA NATIONAL UNIVERSITY OF TRANSPORTATION INDUSTRY-ACADEMIC COOPERATION FOUNDATIONInventors: Yong Ki PARK, Won Choon CHOI, Daesung PARK, Hawon PARK, Changyeol SONG, Deuk Soo PARK, Ung Gi HONG, Miyoung LEE, Sungwon KIM, Chaeeun YEO
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Publication number: 20210354113Abstract: Disclosed is a catalyst for producing an olefin including an oxygen carrier material and a dehydrogenation catalyst. The catalyst allows hydrogen to be converted into water by using oxygen inside the lattice of an oxide catalyst without the additional supply of oxygen, and thus, the conversion can be increased while the decrease in selectivity, which is a disadvantage of an additional oxidative dehydrogenation reaction (ODHP), is suppressed.Type: ApplicationFiled: May 14, 2019Publication date: November 18, 2021Applicants: SK GAS CO., LTD., KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Yong Ki PARK, Won Choon CHOI, Daesung PARK, Hawon PARK, Changyeol SONG, Deuk Soo PARK, Ung Gi HONG, Miyoung LEE
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Patent number: 11148123Abstract: Disclosed is a catalyst for producing the olefin. The catalyst includes a support including alumina and a sub-support component, and a metal oxide impregnated on the support. The metal oxide includes anyone selected from an oxide of chromium, vanadium, manganese, iron, cobalt, molybdenum, copper, zinc, cerium and nickel; and the sub-support component includes anyone selected from zirconium, zinc and platinum.Type: GrantFiled: December 28, 2017Date of Patent: October 19, 2021Assignees: SK GAS CO., LTD., KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Won Choon Choi, Yong Ki Park, Su Jin Gong, Seo Hyun Shim, Deuk Soo Park, Ung Gi Hong
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Patent number: 11141712Abstract: Disclosed are a catalyst for producing olefin and a preparation method thereof. The catalyst for producing olefin includes: a support including an alumina and a sub-support component; and a catalytic component comprising a metal component and an alkali metal impregnated on the support. The preparation method includes: providing a support comprising a sub-support component and an alumina; preparing pre-catalyst by dipping a metal component oxide in the support and calcining it; and dipping a metal component oxide and an alkali metal oxide in the pre-catalyst and calcining it.Type: GrantFiled: May 1, 2018Date of Patent: October 12, 2021Assignees: SK GAS CO., LTD., KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Ung Gi Hong, Deuk Soo Park, Won Choon Choi
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Publication number: 20210113993Abstract: Disclosed is a catalyst for producing an olefin, the catalyst having an excellent conversion and excellent selectivity, and a method for preparing the catalyst. The catalyst for producing an olefin, according to the present invention, includes: a support including alumina and an auxiliary support component; a main catalyst including an active metal oxide supported on the support; and a co-catalyst including an oxide of an alkali metal and a Group 6B transition metal.Type: ApplicationFiled: April 15, 2019Publication date: April 22, 2021Applicants: SK GAS CO., LTD., KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Yong Ki PARK, Won Choon CHOI, Daesung PARK, Hawon PARK, Deuk Soo PARK, Ung Gi HONG, Byungjun KANG, Miyoung LEE
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Patent number: 10821432Abstract: Disclosed is an olefin production method including: pretreating a catalyst by providing reduction gas to an alumina type catalyst to produce olefin from the hydrocarbon including not less than 90 wt % of LPG (Stage 1); producing the olefin by providing the catalyst pretreated at Stage 1 into Riser of Fast Fluidization Regime to dehydrogenate the hydrocarbon (Stage 2); separating the mixture of the produced propylene and the catalyst used at Stage 2, and regenerating the separated catalyst (Stage 3); and recycling the catalyst regenerated at Stage 3 to the process of Stage 1 (Stage 4).Type: GrantFiled: May 1, 2018Date of Patent: November 3, 2020Assignees: SK GAS CO., LTD., KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Deuk Soo Park, Ung Gi Hong, Hyeongchan Ahn, Won Choon Choi, Yong Ki Park
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Patent number: 10737990Abstract: Disclosed is an olefin production method which includes: (a) providing the regenerated catalyst and the hydrocarbon including not less than 90 wt % of LPG into Riser of Fast Fluidization Regime, and dehydrogenating in the presence of an alumina type catalyst; (b) separating an effluent from the dehydrogenation reaction into the catalyst and propylene mixture; (c) stripping to remove the hydrocarbon compound included in the catalyst separated at stage (b); (d) mixing the catalyst stripped at stage (c) with the gas including oxygen, and continuously regenerating it; (e) recycling the catalyst regenerated at stage (d) to stage (a), and providing it again into Riser; and (f) producing propylene product by cooling, compressing and separating propylene mixture of the reaction product separated at stage (b).Type: GrantFiled: May 1, 2018Date of Patent: August 11, 2020Assignees: SK GAS CO., LTD., KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Deuk Soo Park, Ung Gi Hong, Hyeongchan Ahn, Won Choon Choi, Yong Ki Park
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Publication number: 20200086300Abstract: Disclosed are a catalyst for producing olefin and a preparation method thereof. The catalyst for producing olefin includes: a support including an alumina and a sub-support component; and a catalytic component comprising a metal component and an alkali metal impregnated on the support. The preparation method includes: providing a support comprising a sub-support component and an alumina; preparing pre-catalyst by dipping a metal component oxide in the support and calcining it; and dipping a metal component oxide and an alkali metal oxide in the pre-catalyst and calcining it.Type: ApplicationFiled: May 1, 2018Publication date: March 19, 2020Applicants: SK GAS CO., LTD., KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Ung Gi HONG, Deuk Soo PARK, Won Choon CHOI
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Publication number: 20200055028Abstract: Disclosed is a catalyst for producing the olefin. The catalyst includes a support including alumina and a sub-support component, and a metal oxide impregnated on the support. The metal oxide includes anyone selected from an oxide of chromium, vanadium, manganese, iron, cobalt, molybdenum, copper, zinc, cerium and nickel; and the sub-support component includes anyone selected from zirconium, zinc and platinum.Type: ApplicationFiled: December 28, 2017Publication date: February 20, 2020Applicants: SK GAS CO., LTD., KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Won Choon CHOI, Yong Ki PARK, Su Jin GONG, Seo Hyun SHIM, Deuk Soo PARK, Ung Gi HONG
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Publication number: 20190388884Abstract: Disclosed is an olefin production method including: pretreating a catalyst by providing reduction gas to an alumina type catalyst to produce olefin from the hydrocarbon including not less than 90 wt % of LPG (Stage 1); producing the olefin by providing the catalyst pretreated at Stage 1 into Riser of Fast Fluidization Regime to dehydrogenate the hydrocarbon (Stage 2); separating the mixture of the produced propylene and the catalyst used at Stage 2, and regenerating the separated catalyst (Stage 3); and recycling the catalyst regenerated at Stage 3 to the process of Stage 1 (Stage 4).Type: ApplicationFiled: May 1, 2018Publication date: December 26, 2019Applicants: SK GAS CO., LTD., KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Deuk Soo PARK, Ung Gi HONG, Hyeongchan AHN, Won Choon CHOI, Yong Ki PARK
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Publication number: 20190330125Abstract: Disclosed is an olefin production method which includes: (a) providing the regenerated catalyst and the hydrocarbon including not less than 90 wt % of LPG into Riser of Fast Fluidization Regime, and dehydrogenating in the presence of an alumina type catalyst; (b) separating an effluent from the dehydrogenation reaction into the catalyst and propylene mixture; (c) stripping to remove the hydrocarbon compound included in the catalyst separated at stage (b); (d) mixing the catalyst stripped at stage (c) with the gas including oxygen, and continuously regenerating it; (e) recycling the catalyst regenerated at stage (d) to stage (a), and providing it again into Riser; and (f) producing propylene product by cooling, compressing and separating propylene mixture of the reaction product separated at stage (b).Type: ApplicationFiled: May 1, 2018Publication date: October 31, 2019Applicants: SK GAS CO., LTD., KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Deuk Soo PARK, Ung Gi HONG, Hyeongchan AHN, Won Choon CHOI, Yong Ki PARK
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Patent number: 10226757Abstract: A method for preparing trichlorosilane according to an embodiment of the present invention comprises the steps of: supplying surface-modified metal silicide and metal grade silicon to a reaction unit; supplying silicon tetrachloride and hydrogen to the reaction unit; and supplying a product, which is generated by a reaction of metal grade silicon, silicon tetrachloride, and hydrogen in the presence of metal silicide in the reaction unit, to a separation unit, and separating a trichlorosilane component. In cases where a silicon tetrachloride hydrochlorination reaction is performed using the method for preparing trichlorosilane according to the embodiment of the present invention, the yield of trichlorosilane can be raised.Type: GrantFiled: January 19, 2015Date of Patent: March 12, 2019Assignee: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Won Choon Choi, Yong Ki Park, Woo Hyung Lee, Hwi Min Seo, Na Young Kang, Joo Hee Han, Dong Ho Lee, Gui Ryong Ahn, Gil Ho Kim
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Patent number: 10131850Abstract: A naphtha and methanol mixed catalytic cracking reaction process involves a simultaneous cracking reaction of naphtha and methanol using a circulating fluidized-bed reactor comprising a reactor, a stripper, and a regenerator. The naphtha is supplied from the bottom part of the reactor at a position between 0%˜5% of the total length of the reactor, and the methanol is supplied from the bottom part of the reactor at a position between 10%˜80% of the total length of the reactor. The catalytic cracking reaction process uses the circulating fluidized-bed reactor and can crack naphtha and methanol simultaneously by having different introduction positions for the naphtha and methanol in the reactor, which is advantageous for heat neutralization, so that energy consumption can be minimized and also the yield of light olefins can be improved by suppressing the production of light saturated hydrocarbons such as methane, ethane and propane.Type: GrantFiled: July 30, 2015Date of Patent: November 20, 2018Assignee: Korea Research Institute of Chemical TechnologyInventors: Na Young Kang, Yong Ki Park, Won Choon Choi, Dae Jin Kim, Hwi Min Seo, Sunyoung Park, Joo Hyeong Oh, Sin Cheol Kang
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Patent number: 9764960Abstract: A process for preparing granular polysilicon using a fluidized bed reactor is disclosed. The upper and lower spaces of the bed are defined as a reaction zone and a heating zone, respectively, with the height of the reaction gas outlet being selected as the reference height. The invention maximizes the reactor productivity by sufficiently providing the heat required and stably maintaining the reaction temperature in the reaction zone, without impairing the mechanical stability of the fluidized bed reactor. This is achieved through electrical resistance heating in the heating zone where an internal heater is installed in a space in between the reaction gas supplying means and the inner wall of the reactor tube, thereby heating the fluidizing gas and the silicon particles in the heating zone.Type: GrantFiled: July 24, 2014Date of Patent: September 19, 2017Assignee: Korea Research Institute of Chemical TechnologyInventors: Hee Young Kim, Kyung Koo Yoon, Yong Ki Park, Won Choon Choi