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公开(公告)号：US20230183156A1
公开(公告)日：2023-06-15
申请号：US17924625
申请日：2022-04-29
Applicant: LG CHEM, LTD.
Inventor： Sa Eun PARK , Tae Woo KIM , Byung Woo CHOI , Sung Kyu LEE
Abstract: A method of preparing isopropyl alcohol including: supplying a feed stream including a propylene monomer and water to a reaction unit and reacting the propylene monomer and water to produce a reaction product including isopropyl alcohol, the propylene monomer, and the water; supplying a first discharge stream including a gaseous reaction product and a second discharge stream including a liquid reaction product from the reaction unit to a stripper; and in the stripper, circulating an upper discharge stream including the propylene monomer to the reaction unit and supplying a lower discharge stream including water and isopropyl alcohol to an isopropyl alcohol purification unit, where the first discharge stream is condensed by a first heat exchanger and supplied as a liquid phase to the stripper.
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公开(公告)号：US20210061741A1
公开(公告)日：2021-03-04
申请号：US16961570
申请日：2019-07-26
Applicant: LG CHEM, LTD.
Inventor： Sung Kyun KIM , Sung Kyu LEE , Saeun PARK
Abstract: The purification method of isopropyl alcohol including: feeding a feed including isopropyl alcohol, water, and a byproduct comprising normal propyl alcohol to an azeotropic distillation purification tower; separating an azeotrope comprising isopropyl alcohol, normal-propyl alcohol, and water from the top of the azeotropic distillation purification tower and feeding the azeotrope to a dehydration tower; separating the isopropyl alcohol and the normal-propyl alcohol from the bottom of the dehydration tower and feeding the isopropyl alcohol and the normal-propyl alcohol to a normal-propyl alcohol purification tower; and separating the isopropyl alcohol from the top of the normal propyl alcohol purification tower.
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公开(公告)号：US20200263095A1
公开(公告)日：2020-08-20
申请号：US16645647
申请日：2019-07-02
Applicant: LG CHEM, LTD.
Inventor： In Seop KIM , Seok Goo LEE , Sung Kyu LEE , Tae Woo KIM , Joon Ho SHIN
Abstract: A method for quenching a pyrolysis product, including: supplying a discharge stream from a liquid decomposition furnace to a first quench tower; supplying an upper discharge stream from the first quench tower to a second quench tower; supplying a discharge stream from a first gas decomposition furnace to the second quench tower; and supplying a discharge stream from a second gas decomposition furnace to the second quench tower.
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公开(公告)号：US20200216373A1
公开(公告)日：2020-07-09
申请号：US16647828
申请日：2019-07-04
Applicant: LG CHEM, LTD.
Inventor： Tae Woo KIM , Sung Kyu LEE , In Seop KIM , Joon Ho SHIN , Yeon Uk CHOO
Abstract: 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.
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公开(公告)号：US20180154278A1
公开(公告)日：2018-06-07
申请号：US15579507
申请日：2016-06-07
Applicant: LG CHEM, LTD.
Inventor： Sung Kyu LEE , Joon Ho SHIN
Abstract: The present application relates to a distillation device and a distillation method, and according to the distillation device of the present application, it is possible to minimize the energy losses that occur in the refining process of the raw material containing the monomer and the solvent used in the polymerization process of the thermoplastic elastomer and to reduce the installation cost of the distillation device more than the case of refinement with two distillation columns, and thus the process economics may be improved.
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Patent Agency Ranking
公开(公告)号：US20170225100A1
公开(公告)日：2017-08-10
申请号：US15500365
申请日：2016-06-30
Applicant: LG CHEM, LTD.
Inventor： Yeon Uk CHOO , Sung Kyu LEE , Tae Woo KIM , Joon Ho SHIN
Abstract: 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.
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公开(公告)号：US20170044081A1
公开(公告)日：2017-02-16
申请号：US15304017
申请日：2015-05-22
Applicant: LG CHEM, LTD.
Inventor： Sung Kyun KIM , Sung Kyu LEE , Joon Ho SHIN
CPC classification number: C07C7/04 , B01D3/141 , B01D3/143 , C07B63/00 , C07C15/085
Abstract: The present application relates to an apparatus and method for purifying cumene. The apparatus and method for purifying cumene according to the present application can reduce the amount of energy consumption which occurs during purification processes and can provide an apparatus and method capable of efficiently purifying cumene.
Abstract translation: 本申请涉及用于净化枯烯的装置和方法。 根据本申请的净化异丙基苯的装置和方法可以减少净化过程中发生的能量消耗量，并且可以提供能够有效地净化枯烯的装置和方法。
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公开(公告)号：US20160200649A1
公开(公告)日：2016-07-14
申请号：US14912545
申请日：2014-08-20
Applicant: LG CHEM, LTD.
Inventor： Jong Suh PARK , Sung Kyu LEE , Joon Ho SHIN , Jong Ku LEE
Abstract: Provided are a method of and a device for purifying isopropyl alcohol. Water may be effectively removed from a feed including water and isopropyl alcohol while consuming a minimum amount of energy, and therefore high-purity isopropyl alcohol may be obtained.
Abstract translation: 提供异丙醇的纯化方法和装置。 水可以有效地从含有水和异丙醇的饲料中除去，同时消耗最少量的能量，因此可以获得高纯度异丙醇。
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公开(公告)号：US20160193540A1
公开(公告)日：2016-07-07
申请号：US14905245
申请日：2014-07-18
Applicant: LG CHEM, LTD.
Inventor： Sung Kyu LEE , Joon Ho SHIN , Sung Kyun KIM , Jong Ku LEE
CPC classification number: B01D3/141 , B01D3/008 , B01D3/14 , B01D3/143 , B01D3/32 , C07C41/42 , C07C67/54 , C07C69/54
Abstract: Provided are a divided wall distillation column and a separating method. According to the divided wall distillation column and the separating method, when a mixture having three or more components is separated, a material to be separated, for example, 2-ethyl hexyl acrylate can be separated with high purity, and energy reduction in a separation and refinement process of 2-ethyl hexyl acrylate can be promoted.
Abstract translation: 提供分隔壁蒸馏塔和分离方法。 根据分隔壁蒸馏塔和分离方法，当分离具有三种或更多种组分的混合物时，可以以高纯度分离出待分离的材料，例如丙烯酸2-乙基己酯，分离能量减少 可以促进丙烯酸2-乙基己酯的精制工艺。
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公开(公告)号：US20160187036A1
公开(公告)日：2016-06-30
申请号：US14392187
申请日：2014-06-20
Applicant: LG CHEM, LTD.
Inventor： Sung Kyu LEE , Joon Ho SHIN , Tae Woo KIM
CPC classification number: F25B27/02 , B01D3/007 , F24D2200/16 , F24H4/04 , F25B1/10 , F25B25/005 , F25B27/00 , F25B27/005 , F25B30/02 , F25B2339/047 , F25B2700/1931 , F25B2700/197 , F25B2700/21152 , F25B2700/21161 , F25B2700/21174 , F25B2700/21175 , Y02A30/274 , Y02P20/124 , Y02P70/34
Abstract: The present application relates to a heat recovery apparatus and a method thereof, according to the heat recovery apparatus and a method thereof according to an embodiment of the present application, steam of 120° C. or more may be generated using only one heat exchanger using waste heat of a low-grade heat source in the state of a sensible heat of 70° C. or more discharged in industrial sites or various chemical processes, for example, such as a manufacturing process of petrochemicals, and the generated steam may also be used in various processes, and thus the use of high temperature steam which is an external heat source to be used in a reactor or a distillation column may be decreased, thereby maximizing energy saving efficiency.
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