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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Publication number: 20170253811Abstract: 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: ApplicationFiled: July 30, 2015Publication date: September 7, 2017Inventors: 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: 9694312Abstract: The present invention relates to a carbon dioxide capture apparatus having a temperature swing adsorption mode for selective separation of carbon dioxide from flue gases. The carbon dioxide capture apparatus comprises: a carbon dioxide sorption column including a carbon dioxide adsorption unit in which adsorption of carbon dioxide from flue gases occurs; a carbon dioxide desorption column connected to the carbon dioxide sorption column and including a carbon dioxide desorption unit in which desorption of the adsorbed carbon dioxide occurs; a carbon dioxide absorbent repeatedly adsorbing and desorbing carbon dioxide while circulating through the carbon dioxide sorption column and the carbon dioxide desorption column; and a heat exchange unit in which heat exchange occurs between the absorbent after carbon dioxide adsorption and the absorbent after carbon dioxide desorption.Type: GrantFiled: March 12, 2014Date of Patent: July 4, 2017Assignee: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Yong Ki Park, Won Choon Choi, Na Young Kang, Hwi Min Seo
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Patent number: 9604851Abstract: Provided are a method of manufacturing a high silica zeolite using a recovered silica filtrate, and a high silica zeolite manufactured according to the method. To this end, the present invention provides the method of manufacturing the high silica zeolite using the recovered silica filtrate, including manufacturing a solated agglomerated silica from the silica filtrate including a metal salt (step 1); filtering and washing the solated agglomerated silica of step 1 to manufacture a silica cake from which the metal salt is removed (step 2); peptizing the silica cake to manufacture a silica sol (step 3); and manufacturing the high silica zeolite using the silica sol manufactured in step 3 as a silica source (step 4). Further, the present invention provides a high silica zeolite manufactured from a recovered silica filtrate through the manufacturing method and having a Si/Al mole ratio of 5 or more.Type: GrantFiled: January 23, 2015Date of Patent: March 28, 2017Assignee: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Na Young Kang, Yong ki Park, Won Choon Choi, Hwi Min Seo, Chul Wee Lee
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Publication number: 20160332149Abstract: 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: ApplicationFiled: January 19, 2015Publication date: November 17, 2016Inventors: 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: 9321039Abstract: The present invention provides a catalyst for the decomposition of a perfluorinated compound containing a halogen acid gas, and a preparation method thereof. According to the present invention, the Ru—P—Al tri-component catalyst for the decomposition of a perfluorinated compound shows an excellent decomposition activity and durability with respect to the decomposition and removal of a perfluorinated compound containing a halogen acid gas, and thus can be used to decompose a chamber cleaning gas, an etchant, a solvent and the like of a perfluorinated compound from the semiconductor manufacturing industry to the LCD processing field. In addition, the present invention can be useful for decomposing and removing a perfluorinated compound discharged in a process using a halogen acid gas such as F2, Cl2, Br2 and the like.Type: GrantFiled: August 16, 2012Date of Patent: April 26, 2016Assignees: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, ECOPRO CO., LTD.Inventors: Won Choon Choi, Yong Ki Park, Na Young Kang, Min-Whee Cho, Song-Jong Cho, Sung Ho Cho, Sung Jin Yoon, Young-Ju Son
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Publication number: 20160016108Abstract: The present invention relates to a carbon dioxide capture apparatus having a temperature swing adsorption mode for selective separation of carbon dioxide from flue gases. The carbon dioxide capture apparatus comprises: a carbon dioxide sorption column including a carbon dioxide adsorption unit in which adsorption of carbon dioxide from flue gases occurs; a carbon dioxide desorption column connected to the carbon dioxide sorption column and including a carbon dioxide desorption unit in which desorption of the adsorbed carbon dioxide occurs; a carbon dioxide absorbent repeatedly adsorbing and desorbing carbon dioxide while circulating through the carbon dioxide sorption column and the carbon dioxide desorption column; and a heat exchange unit in which heat exchange occurs between the absorbent after carbon dioxide adsorption and the absorbent after carbon dioxide desorption.Type: ApplicationFiled: March 12, 2014Publication date: January 21, 2016Inventors: Yong Ki PARK, Won Choon CHOI, Na Young KANG, Hwi Min SEO
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Patent number: 9138730Abstract: The present invention relates to a cation-exchanged zeolite catalyst for an transiodination and a process for producing mono-iodo benzene by using it. Particularly, the cation-exchanged zeolite catalyst has a molar ratio of Si/Al from 5 to 100 and is ion-exchanged with an alkali metal or an alkaline earth metal in range of 2% to 50% of ion exchange capacity. Further, the process for producing mono-iodo benzene of the present invention comprises the step of performing a transiodination by using the cation-exchanged zeolite catalyst to produce mono-iodo benzene from reactants including benzene and one or more multi-iodo benzenes selected from the group consisting of di-iodo benzene and tri-iodo benzene.Type: GrantFiled: December 7, 2012Date of Patent: September 22, 2015Assignee: SK Chemicals Co., Ltd.Inventors: Yong-Jin Yi, Jae-Bong Lim, Il-Hoon Cha, Han-Seok Kim, Yong-ki Park, Won-Choon Choi, Da-Young Min
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Patent number: 9108180Abstract: The present invention relates to a cation-exchanged zeolite catalyst for an transiodination and a process for producing mono-iodo benzene by using it. Particularly, the cation-exchanged zeolite catalyst has a molar ratio of Si/Al from 5 to 100 and is ion-exchanged with an alkali metal or an alkaline earth metal in range of 2% to 50% of ion exchange capacity. Further, the process for producing mono-iodo benzene of the present invention comprises the step of performing a transiodination by using the cation-exchanged zeolite catalyst to produce mono-iodo benzene from reactants including benzene and one or more multi-iodo benzenes selected from the group consisting of di-iodo benzene and tri-iodo benzene.Type: GrantFiled: December 24, 2009Date of Patent: August 18, 2015Assignee: SK Chemicals Co., Ltd.Inventors: Yong-Jin Yi, Jae-Bong Lim, Il-Hoon Cha, Han-Seok Kim, Yong-Ki Park, Won-Choon Choi, Da-Young Min
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Patent number: 9056308Abstract: Disclosed are a molecular sieve catalyst and a preparation method thereof to produce light olefins from cracking naphtha catalytically in severe environments of high temperature and high moisture. In detail, the catalyst is prepared by spray-drying and calcining the mixed slurry, in which 0.01˜5.0 wt % of MnO2 and 1˜15 wt % of P2O5 are simultaneously imbedded in catalyst which consists of zeolite, clay and inorganic complex. According to the present invention, the method that manganese and phosphate are imbedded simultaneously in zeolite and inorganic complex is used to increases thermal-stability of obtained spherical catalyst, and increase olefin yield of cracking hydrocarbon such as naphtha by protecting acid-site of zeolite. To synthesize the required catalyst, the important procedures are mixing ratio and mixing sequence of Mn, P, zeolite, and inorganic complex.Type: GrantFiled: January 30, 2014Date of Patent: June 16, 2015Assignee: SK INNOVATION CO., LTD.Inventors: Dae Hyun Choo, Hong Chan Kim, Suk Joon Kim, Ji Min Kim, Tae Jin Kim, Sun Choi, Seung Hoon Oh, Yong Seung Kim, Deuk Soo Park, Yong Ki Park, Chul Wee Lee, Hee Young Kim, Won Choon Choi, Na Young Kang, Bu Sub Song
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Publication number: 20150139898Abstract: Provided are a method of manufacturing a high silica zeolite using a recovered silica filtrate, and a high silica zeolite manufactured according to the method. To this end, the present invention provides the method of manufacturing the high silica zeolite using the recovered silica filtrate, including manufacturing a solated agglomerated silica from the silica filtrate including a metal salt (step 1); filtering and washing the solated agglomerated silica of step 1 to manufacture a silica cake from which the metal salt is removed (step 2); peptizing the silica cake to manufacture a silica sol (step 3); and manufacturing the high silica zeolite using the silica sol manufactured in step 3 as a silica source (step 4). Further, the present invention provides a high silica zeolite manufactured from a recovered silica filtrate through the manufacturing method and having a Si/Al mole ratio of 5 or more.Type: ApplicationFiled: January 23, 2015Publication date: May 21, 2015Inventors: Na Young KANG, Yong ki PARK, Won Choon CHOI, Hwi Min SEO, Chul Wee LEE
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Patent number: 8894753Abstract: Disclosed is a carbon dioxide capture system which includes a first carbon dioxide adsorption/desorption section including a first carbon dioxide adsorption section, a first carbon dioxide desorption section connected to the first carbon dioxide adsorption section, and a first carbon dioxide adsorbent circulating through the first carbon dioxide adsorption section and the first carbon dioxide desorption section; and a second carbon dioxide adsorption/desorption section including a second carbon dioxide adsorption section, a second carbon dioxide desorption section connected to the second carbon dioxide adsorption section, and a second carbon dioxide adsorbent circulating through the second carbon dioxide adsorption section and the second carbon dioxide desorption section.Type: GrantFiled: January 25, 2013Date of Patent: November 25, 2014Assignee: Korea Research Institute of Chemical TechnologyInventors: Yong Ki Park, Won Choon Choi, Na Young Kang
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Publication number: 20140335008Abstract: 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: ApplicationFiled: July 24, 2014Publication date: November 13, 2014Applicant: Korea Research Institute of Chemical TechnologyInventors: Hee Young Kim, Kyung Koo Yoon, Yong Ki Park, Won Choon Choi
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Publication number: 20140329667Abstract: The present invention provides a catalyst for the decomposition of a perfluorinated compound containing a halogen acid gas, and a preparation method thereof. According to the present invention, the Ru—P—Al tri-component catalyst for the decomposition of a perfluorinated compound shows an excellent decomposition activity and durability with respect to the decomposition and removal of a perfluorinated compound containing a halogen acid gas, and thus can be used to decompose a chamber cleaning gas, an etchant, a solvent and the like of a perfluorinated compound from the semiconductor manufacturing industry to the LCD processing field. In addition, the present invention can be useful for decomposing and removing a perfluorinated compound discharged in a process using a halogen acid gas such as F2, Cl2, Br2 and the like.Type: ApplicationFiled: August 16, 2012Publication date: November 6, 2014Applicants: ECOPRO CO., LTD., KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Won Choon Choi, Yong Ki Park, Na Young Kang, Min-Whee Cho, Song-Jong Cho, Sung Ho Cho, Sung Jin Yoon, Young-Ju Son
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Patent number: 8840864Abstract: A method of preparing ZSM-5, including: providing a nanocrystalline ZSM-5 seed having a size of 70-150 nm; adding the nanocrystalline ZSM-5 seed to a stock solution including water glass as a silica source, an alumina source, a neutralizer and water to form a reaction mixture; and maintaining the reaction mixture at 150-200° C. to crystallize the reaction mixture. The method is advantageous in that ZSM-5 having small and uniform crystal sizes and including no impurities can be synthesized in a short period of time.Type: GrantFiled: October 18, 2010Date of Patent: September 23, 2014Assignees: SK Innovation., Ltd., Korea Research Institute of Chemical TechnologyInventors: Sun Choi, Deuk Soo Park, Suk Joon Kim, Dae Hyun Choo, Yong Ki Park, Chul Wee Lee, Hee Young Kim, Won Choon Choi, Na Young Kang, Bu Sub Song
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Publication number: 20140251136Abstract: Disclosed is a carbon dioxide capture system which includes a first carbon dioxide adsorption/desorption section including a first carbon dioxide adsorption section, a first carbon dioxide desorption section connected to the first carbon dioxide adsorption section, and a first carbon dioxide adsorbent circulating through the first carbon dioxide adsorption section and the first carbon dioxide desorption section; and a second carbon dioxide adsorption/desorption section including a second carbon dioxide adsorption section, a second carbon dioxide desorption section connected to the second carbon dioxide adsorption section, and a second carbon dioxide adsorbent circulating through the second carbon dioxide adsorption section and the second carbon dioxide desorption section.Type: ApplicationFiled: January 25, 2013Publication date: September 11, 2014Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGYInventors: Yong Ki Park, Won Choon Choi, Na Young Kang, Hwi min Seo
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Patent number: 8821827Abstract: An apparatus for preparing granular polysilicon comprises a reactor tube, a reactor shell, an internal heater, and components for controlling pressure, supplying a fluidizing gas and a reaction gas, discharging gas, and discharging particles. The reactor tube is associated with an inner space comprising an inner zone that contains a bed of silicon particles and is the site at which silicon deposition occurs. The inner zone comprises a heating zone and a reaction zone. The fluidizing gas supplying component supplies a fluidizing gas for fluidizing the bed of silicon particles to a bottom of the heating zone. The apparatus can minimize the problems occurring during the heating of silicon particles at high temperature for silicon deposition on the surface of the silicon particles.Type: GrantFiled: October 30, 2009Date of Patent: September 2, 2014Assignee: Korea Research Institute of Chemical TechnologyInventors: Hee Young Kim, Kyung Koo Yoon, Yong Ki Park, Won Choon Choi
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Publication number: 20140213431Abstract: Disclosed are a molecular sieve catalyst and a preparation method thereof to produce light olefins from cracking naphtha catalytically in severe environments of high temperature and high moisture. In detail, the catalyst is prepared by spray-drying and calcining the mixed slurry, in which 0.01˜5.0 wt % of MnO2 and 1˜15 wt % of P2O5 are simultaneously imbedded in catalyst which consists of zeolite, clay and inorganic complex. According to the present invention, the method that manganese and phosphate are imbedded simultaneously in zeolite and inorganic complex is used to increases thermal-stability of obtained spherical catalyst, and increase olefin yield of cracking hydrocarbon such as naphtha by protecting acid-site of zeolite. To synthesize the required catalyst, the important procedures are mixing ratio and mixing sequence of Mn, P, zeolite, and inorganic complex.Type: ApplicationFiled: January 30, 2014Publication date: July 31, 2014Applicants: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY, SK INNOVATION CO., LTDInventors: DAE HYUN CHOO, HONG CHAN KIM, SUK JOON KIM, JI MIN KIM, TAE JIN KIM, SUN CHOI, SEUNG HOON OH, YONG SEUNG KIM, DEUK SOO PARK, YONG KI PARK, CHUL WEE LEE, HEE YOUNG KIM, WON CHOON CHOI, NA YOUNG KANG, BU SUB SONG
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Patent number: 8747757Abstract: A process for preparing granular polysilicon using a fluidized bed reactor is disclosed. Upper and lower spaces of the bed are the reaction zone and heating zone, respectively, wherein the height of the reaction gas outlet is the reference height. Reactor productivity is maximized 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 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. The heat generated is transferred to the reaction zone by supplying the fluidizing gas at a rate silicon particles can be intermixed between the reaction zone and the heating zone in a continuous, fluidized state.Type: GrantFiled: August 9, 2007Date of Patent: June 10, 2014Assignee: Korea Research Institute of Chemical TechnologyInventors: Hee Young Kim, Kyung Koo Yoon, Yong Ki Park, Won Choon Choi
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Patent number: 8673802Abstract: Disclosed are a molecular sieve catalyst and a preparation method thereof to produce light olefins from cracking naphtha catalytically in severe environments of high temperature and high moisture. In detail, the catalyst is prepared by spray-drying and calcining the mixed slurry, in which 0.01˜5.0 wt % of MnO2 and 1˜15 wt % of P2O5 are simultaneously imbedded in catalyst which consists of zeolite, clay and inorganic complex. According to the present invention, the method that manganese and phosphate are imbedded simultaneously in zeolite and inorganic complex is used to increases thermal-stability of obtained spherical catalyst, and increase olefin yield of cracking hydrocarbon such as naphtha by protecting acid-site of zeolite. To synthesize the required catalyst, the important procedures are mixing ratio and mixing sequence of Mn, P, zeolite, and inorganic complex.Type: GrantFiled: February 5, 2009Date of Patent: March 18, 2014Assignees: SK Innovation Co., Ltd., Korea Research Institute of Chemical TechnologyInventors: Dae Hyun Choo, Hong Chan Kim, Suk Joon Kim, Ji Min Kim, Tae Jin Kim, Sun Choi, Seung Hoon Oh, Yong Seung Kim, Deuk Soo Park, Yong Ki Park, Chul Wee Lee, Hee Young Kim, Won Choon Choi, Na Young Kang, Bu Sub Song
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Patent number: 8431032Abstract: There is provided a method for continual preparation of granular polycrystalline silicon using a fluidized bed reactor, enabling a stable, long-term operation of the reactor by effective removal of silicon deposit accumulated on the inner wall of the reactor tube. The method comprises (i) a silicon particle preparation step, wherein silicon deposition occurs on the surface of the silicon particles, while silicon deposit is accumulated on the inner wall of the reactor tube encompassing the reaction zone; (ii) a silicon particle partial discharging step, wherein a part of the silicon particles remaining inside the reactor tube is discharged out of the fluidized bed reactor so that the height of the bed of the silicon particles does not exceed the height of the reaction gas outlet; and (iii) a silicon deposit removal step, wherein the silicon deposit is removed by supplying an etching gas into the reaction zone.Type: GrantFiled: October 30, 2009Date of Patent: April 30, 2013Assignee: Korea Research Institute of Chemical TechnologyInventors: Hee Young Kim, Kyung Koo Yoon, Yong Ki Park, Won Choon Choi