Patents by Inventor Yeon-Uk Choo
Yeon-Uk Choo 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: 20210363074Abstract: A method for preparing ethylene, including: passing a feed stream containing C1 and C2 hydrocarbon compounds through a first heat exchanger and feeding the feed stream passed through the first heat exchanger to a second gas-liquid separator; feeding a part of a bottom discharge stream of the second gas-liquid separator to a demethanizer, passing an overhead discharge stream of the second gas-liquid separator through a second heat exchanger, feeding the overhead discharge stream of the second gas-liquid separator passed through the second heat exchanger to a third gas-liquid separator; feeding a bottom discharge stream of the third gas-liquid separator to the demethanizer; feeding a bottom discharge stream of the demethanizer to a C2 separator; feeding an overhead discharge stream of the C2 separator to a second compressor; passing a part of a compressed discharge stream of the second compressor through the first heat exchanger and feeding the part of the compressed discharge stream of the second compressor paType: ApplicationFiled: July 15, 2019Publication date: November 25, 2021Inventors: Tae Woo Kim, In Seop Kim, Sung Kyu Lee, Joon Ho Shin, Yeon Uk Choo
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Patent number: 11103803Abstract: A distillation device including: a first distillation column having first top, bottom and upper outlets and first upper and lower inlets; a second distillation column equipped with a top condenser and a bottom reboiler, and having second top, bottom and upper outlets and second upper and lower inlets; a vapor recompressor; a heat exchanger; a first supply line supplying a feedstock to the first lower inlet; a first connection line transferring a first bottom flow to the second lower inlet via the heat exchanger; and a second connection line transferring a second top flow to the top condenser via the heat exchanger after passing through the vapor recompressor. The first bottom flow flowing through the first connection line and the second top flow flowing through the second connection line are heat-exchanged in the heat exchanger. A distillation method of a feedstock using the distillation device.Type: GrantFiled: June 8, 2018Date of Patent: August 31, 2021Assignee: LG CHEM, LTD.Inventors: Tae Woo Kim, Sung Kyu Lee, Joon Ho Shin, Yeon Uk Choo
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Patent number: 10918968Abstract: The present application relates to a selective distillation apparatus and a distillation method, which provides a distillation apparatus capable of switching between a serial connection mode and a parallel connection mode on the situation, thereby enabling selective operation of high-efficiency operation and high-capacity operation.Type: GrantFiled: September 6, 2017Date of Patent: February 16, 2021Assignee: LG CHEM, LTD.Inventors: Tae Woo Kim, Sung Kyu Lee, Sung Kyun Kim, Joon Ho Shin, Yeon Uk Choo
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Patent number: 10766843Abstract: Disclosed is a method for purifying phenol, by which the loss of a heat source is minimized, the amount used of steam is decreased, and efficiency of energy consumed in a process may be maximized. The method for purifying phenol includes a step of passing impurities including phenol, acetone and hydrocarbon, which are prepared using cumene as a raw material, via a plurality of distillation columns one by one, and performing azeotropic distillation, wherein the ratio of phenol and water at the uppermost end of the distillation column where the azeotropic distillation is performed, is from 60:40 to 65:35, for the optimized separation of the hydrocarbon.Type: GrantFiled: October 11, 2016Date of Patent: September 8, 2020Assignee: LG CHEM, LTD.Inventors: Sung-Kyun Kim, Sung-Kyu Lee, Yeon-Uk Choo, Joon-Ho Shin, Ha-Na Lee, Tae-Woo Kim
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Publication number: 20200276517Abstract: The present application relates to a selective distillation apparatus and a distillation method, which provides a distillation apparatus capable of switching between a serial connection mode and a parallel connection mode on the situation, thereby enabling selective operation of high-efficiency operation and high-capacity operation.Type: ApplicationFiled: September 6, 2017Publication date: September 3, 2020Inventors: Tae Woo KIM, Sung Kyu LEE, Sung Kyun KIM, Joon Ho SHIN, Yeon Uk CHOO
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Publication number: 20200216373Abstract: A method for preparing ethylene including: feeding a thermally cracked compressed stream to a first distillation apparatus selectively operating as a first deethanizer or a depropanizer; and feeding an overhead discharge stream of the first distillation apparatus to a second distillation apparatus. When the first distillation apparatus is operated as the first deethanizer, a bottom discharge stream of the second distillation apparatus is fed to a C2 separator. When the first distillation apparatus is operated as the depropanizer, the bottom discharge stream of the second distillation apparatus is passed through a third distillation apparatus and fed to the C2 separator.Type: ApplicationFiled: July 4, 2019Publication date: July 9, 2020Inventors: Tae Woo KIM, Sung Kyu LEE, In Seop KIM, Joon Ho SHIN, Yeon Uk CHOO
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Publication number: 20200179820Abstract: A distillation device including: a first distillation column having first top, bottom and upper outlets and first upper and lower inlets; a second distillation column equipped with a top condenser and a bottom reboiler, and having second top, bottom and upper outlets and second upper and lower inlets; a vapor recompressor; a heat exchanger; a first supply line supplying a feedstock to the first lower inlet; a first connection line transferring a first bottom flow to the second lower inlet via the heat exchanger; and a second connection line transferring a second top flow to the top condenser via the heat exchanger after passing through the vapor recompressor. The first bottom flow flowing through the first connection line and the second top flow flowing through the second connection line are heat-exchanged in the heat exchanger. A distillation method of a feedstock using the distillation device.Type: ApplicationFiled: June 8, 2018Publication date: June 11, 2020Inventors: Tae Woo Kim, Sung Kyu Lee, Joon Ho Shin, Yeon Uk Choo
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Publication number: 20200079716Abstract: Disclosed is a method for purifying phenol, by which the loss of a heat source is minimized, the amount used of steam is decreased, and efficiency of energy consumed in a process may be maximized. The method for purifying phenol includes a step of passing impurities including phenol, acetone and hydrocarbon, which are prepared using cumene as a raw material, via a plurality of distillation columns one by one, and performing azeotropic distillation, wherein the ratio of phenol and water at the uppermost end of the distillation column where the azeotropic distillation is performed, is from 60:40 to 65:35, for the optimized separation of the hydrocarbon.Type: ApplicationFiled: October 11, 2016Publication date: March 12, 2020Inventors: Sung-Kyun KIM, Sung-Kyu LEE, Yeon-Uk CHOO, Joon-Ho SHIN, Ha-Na LEE, Tae-Woo KIM
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Patent number: 10486080Abstract: The present application relates to a distillation device. When a feedstock containing acetone and methanol is separated using a distillation device according to the present application, a methanol removal distillation column may be located at a position for easily separating methanol to solve a problem due to accumulation of methanol in the process and to lower the methanol content in the acetone product, and thus the lifetime of catalysts can be extended, and moreover, methanol can be removed with good efficiency from a flow of the lower part of the distillation column obtaining the final acetone product by using only the conventional phase separator and one methanol removal distillation column further installed, so that the acetone product obtained from the upper part of the distillation column obtaining the acetone product can be obtained in high purity and the operating cost and the equipment cost of equipments can be greatly reduced.Type: GrantFiled: July 1, 2016Date of Patent: November 26, 2019Assignee: LG CHEM, LTD.Inventors: Yeon Uk Choo, Sung Kyu Lee, Tae Woo Kim, Jong Suh Park, Joon Ho Shin
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Publication number: 20190152879Abstract: Provided is a method for preparing ethylene with improved energy efficiency which can reduce energy due to direct heat exchange between processes.Type: ApplicationFiled: April 7, 2017Publication date: May 23, 2019Inventors: Sung-Kyun KIM, Sung-Kyu LEE, Tae-Woo KIM, Joon-Ho SHIN, Yeon-Uk CHOO, Sa-Eun PARK
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Patent number: 10294177Abstract: Provided is a method for preparing ethylene with improved energy efficiency which can reduce energy due to direct heat exchange between processes.Type: GrantFiled: April 7, 2017Date of Patent: May 21, 2019Assignee: LG CHEM, LTD.Inventors: Sung-Kyun Kim, Sung-Kyu Lee, Tae-Woo Kim, Joon-Ho Shin, Yeon-Uk Choo, Sa-Eun Park
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Publication number: 20180297915Abstract: Provided is a method for preparing ethylene with improved energy efficiency which can reduce energy due to direct heat exchange between processes.Type: ApplicationFiled: April 7, 2017Publication date: October 18, 2018Inventors: Sung-Kyun KIM, Sung-Kyu LEE, Tae-Woo KIM, Joon-Ho SHIN, Yeon-Uk CHOO, Sa-Eun PARK
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Publication number: 20180169542Abstract: The present application relates to a distillation device. When a feedstock containing acetone and methanol is separated using a distillation device according to the present application, a methanol removal distillation column may be located at a position for easily separating methanol to solve a problem due to accumulation of methanol in the process and to lower the methanol content in the acetone product, and thus the lifetime of catalysts can be extended, and moreover, methanol can be removed with good efficiency from a flow of the lower part of the distillation column obtaining the final acetone product by using only the conventional phase separator and one methanol removal distillation column further installed, so that the acetone product obtained from the upper part of the distillation column obtaining the acetone product can be obtained in high purity and the operating cost and the equipment cost of equipments can be greatly reduced.Type: ApplicationFiled: July 1, 2016Publication date: June 21, 2018Inventors: Yeon Uk CHOO, Sung Kyu LEE, Tae Woo KIm, Jong Suh PARK, Joon Ho SHIN
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Publication number: 20170225100Abstract: The present application relates to a distillation device, and according to the distillation device of the present application, in first and second compounds being capable of forming an azeotrope, by introducing the second compound having a relatively high boiling point into a supply port located below the first compound having a relatively low boiling point, the first compound can be previously separated from the top of a first distillation column and the content of the first compound in the flow discharged from the bottom of the first distillation column can be minimized, and thus, as a moving route of the first compound is minimized, the second compound can be separated in high purity.Type: ApplicationFiled: June 30, 2016Publication date: August 10, 2017Inventors: Yeon Uk CHOO, Sung Kyu LEE, Tae Woo KIM, Joon Ho SHIN
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Patent number: 9255973Abstract: A system for estimating long term characteristics of a battery includes a learning data input unit for receiving initial characteristic learning data and long term characteristic learning data of a battery to be a learning object; a measurement data input unit for receiving initial characteristic measurement data of a battery to be an object for estimation of long term characteristics; and an artificial neural network operation unit for receiving the initial characteristic learning data and the long term characteristic learning data from the learning data input unit to allow learning of an artificial neural network, receiving the initial characteristic measurement data from the measurement data input unit and applying the learned artificial neural network thereto, and thus calculating long term characteristic estimation data from the initial characteristic measurement data of the battery and outputting the long term characteristic estimation data.Type: GrantFiled: August 21, 2008Date of Patent: February 9, 2016Assignee: LG CHEM, LTD.Inventors: Hyun-Kon Song, Jeong-Ju Cho, Yeon-Uk Choo, Mi-Young Son, Ho-Chun Lee
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Patent number: 8412658Abstract: A system includes a learning data input unit for receiving initial and long term characteristic learning data of a battery to be a learning object; a measurement data input unit for receiving initial characteristic measurement data of a battery to be an object for long term characteristic estimation; an artificial neural network operation unit for converting the learning data into first and second data structures, allowing an artificial neural network to learn the learning data based on each data structure, converting the measurement data into first and second data structures, and individually applying the learned artificial neural network corresponding to each data structure to calculate and output long term characteristic estimation data based on each data structure; and a long term characteristic evaluation unit for calculating an error of the estimation data of each data structure and determining reliability of the estimation data depending on error.Type: GrantFiled: September 12, 2008Date of Patent: April 2, 2013Assignee: LG Chem, Ltd.Inventors: Hyun-Kon Song, Jeong-Ju Cho, Yeon-Uk Choo, Mi-Young Son, Ho-Chun Lee
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Publication number: 20110191278Abstract: A system for estimating long term characteristics of a battery includes a learning data input unit for receiving initial characteristic learning data and long term characteristic learning data of a battery to be a learning object; a measurement data input unit for receiving initial characteristic measurement data of a battery to be an object for estimation of long term characteristics; and an artificial neural network operation unit for receiving the initial characteristic learning data and the long term characteristic learning data from the learning data input unit to allow learning of an artificial neural network, receiving the initial characteristic measurement data from the measurement data input unit and applying the learned artificial neural network thereto, and thus calculating long term characteristic estimation data from the initial characteristic measurement data of the battery and outputting the long term characteristic estimation data.Type: ApplicationFiled: August 21, 2008Publication date: August 4, 2011Applicant: LG CHEM, LTD.Inventors: Hyun-Kon Song, Jeong-ju Cho, Yeon-Uk Choo, Mi-Young Son, Ho-Chun Lee
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Publication number: 20100312733Abstract: A system includes a learning data input unit for receiving initial and long term characteristic learning data of a battery to be a learning object; a measurement data input unit for receiving initial characteristic measurement data of a battery to be an object for long term characteristic estimation; an artificial neural network operation unit for converting the learning data into first and second data structures, allowing an artificial neural network to learn the learning data based on each data structure, converting the measurement data into first and second data structures, and individually applying the learned artificial neural network corresponding to each data structure to calculate and output long term characteristic estimation data based on each data structure; and a long term characteristic evaluation unit for calculating an error of the estimation data of each data structure and determining reliability of the estimation data depending on error.Type: ApplicationFiled: September 12, 2008Publication date: December 9, 2010Applicant: LG CHEM, LTD.Inventors: Hyun-Kon Song, Jeong-Ju Cho, Yeon-Uk Choo, Mi-Young Son, Ho-Chun Lee