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公开(公告)号：US20230150814A1
公开(公告)日：2023-05-18
申请号：US17793894
申请日：2021-12-08
Applicant: LG CHEM, LTD.
Inventor： Sung June HWANG , Tae Woo KIM , Sik KI , Sung Kyu LEE
CPC classification number: C01B3/34 , C10G7/006 , B01D3/4205 , C10G2300/302 , C10G2300/1003 , C01B2203/1247 , C01B2203/0833 , C01B2203/062 , C01B2203/063
Abstract: Provided is a method for preparing synthesis gas, and more particularly, a method for preparing synthesis gas including: supplying a pyrolysis fuel oil (PFO) stream including a PFO and a pyrolysis gas oil (PGO) stream including a PGO discharged from a naphtha cracking center (NCC) process to a distillation tower as a feed stream (S10); and supplying a lower discharge stream from the distillation tower to a combustion chamber for a gasification process to obtain synthesis gas (S20), wherein the PGO stream is supplied to an upper end of the distillation tower and the PFO stream is supplied to a lower end of the distillation tower.
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公开(公告)号：US20220177404A1
公开(公告)日：2022-06-09
申请号：US17600889
申请日：2020-07-02
Applicant: LG CHEM, LTD.
Inventor： Yeon Uk CHOO , Sung Kyu LEE , Joon Ho SHIN , Hyoung JUN , Chan Hyu JIN
Abstract: The present disclosure relates to a preparation system and a preparation method of a diester-based composition. A first alcohol which is a reaction raw material is added to waste water as an extracting agent, and layer separation is performed to separate a second alcohol which is another reaction raw material in the waste water. Accordingly, the amount of alcohol discharged as waste water can be reduced, and an eco-friendly process operation is possible. In addition, it is economical and efficiency to use the alcohol separated again as a reaction raw material
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公开(公告)号：US20210363075A1
公开(公告)日：2021-11-25
申请号：US16625333
申请日：2018-07-20
Applicant: LG CHEM, LTD.
Inventor： Sung Kyun KIM , Sung Kyu LEE , Yong Mann BEYUN , Joon Ho SHIN , Ji Hye KIM
Abstract: A method for separating and refining 1-butene with a high purity and a high yield from a raffinate-2 stream. The method includes: feeding raffinate-2 to a first distillation column; obtaining heavy raffinate-3 from a lower part of the first distillation column; recovering an upper part fraction containing 1-butene from an upper part of the first distillation column; feeding the upper part fraction containing 1-butene to a second distillation column; recovering a first lower part fraction rich in 1-butene from a lower part of the second distillation column and light raffinate-3 from an upper part of the second distillation column. Heat of the upper part fraction recovered from the upper part of the first distillation column is fed to the lower part of the second distillation column through a first heat exchanger. Thus, 1-butene is obtained with high purity and high yield while maximizing an energy recovery amount by double-effect distillation.
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公开(公告)号：US20210355069A1
公开(公告)日：2021-11-18
申请号：US17443781
申请日：2021-07-27
Applicant: LG CHEM, LTD.
Inventor： Hyun Kyu KIM , Sung Kyu LEE , Hyoung JUN , Chan Hyu JIN , Jeong Ju MOON , Joo Ho KIM
Abstract: The present disclosure relates to a manufacturing system and a manufacturing method which are capable of continuously manufacturing an ester-based composition, and has a technical feature of being capable of manufacturing an ether-based composition continuously, economically, and efficiently.
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公开(公告)号：US20210317063A1
公开(公告)日：2021-10-14
申请号：US17273279
申请日：2019-09-18
Applicant: LG CHEM, LTD.
Inventor： Seok Goo LEE , Sung Kyu LEE , Joon Ho SHIN
Abstract: Provided is a method for manufacturing a terephthalate-based composition, the method comprising: a step (S1) of flowing in a dialkyl terephthalate in which alkyl has 7 to 10 carbon atoms and a primary alcohol with a low boiling point having 4 or 5 carbon atoms into a reactor and performing transesterification of the dialkyl terephthalate and the primary alcohol with a low boiling point and a step (S2) of extracting in a reduced pressure an unreacted material and a by-product from the reactor after finishing the transesterification, wherein the step S1 comprises a pressure-applying step in which the pressure of the reactor is 1.5 to 2.5 bar.
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Patent Agency Ranking
公开(公告)号：US20200317599A1
公开(公告)日：2020-10-08
申请号：US16838279
申请日：2020-04-02
Applicant: LG CHEM, LTD.
Inventor： Hyun Kyu KIM , Sung Kyu LEE , Hyoung JUN , Chan Hyu JIN , Jeong Ju MOON , Joo Ho KIM
Abstract: The present disclosure relates to a manufacturing system and a manufacturing method which are capable of continuously manufacturing an ester-based composition, and has a technical feature of being capable of manufacturing an ether-based composition continuously, economically, and efficiently.
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57.发明申请公开(公告)号：US20190263745A1
公开(公告)日：2019-08-29
申请号：US16343988
申请日：2018-09-05
Applicant: LG CHEM, LTD.
Inventor： Ha Na LEE , Sung Kyu LEE , Joon Ho SHIN , Hyoung JUN , Hyun Kyu KIM
Abstract: Provided are an ester composition preparation system, including an integrated reactor, a gas-liquid separation column, a purification unit, an alcohol storage tank, and a mixed alcohol separation column, which is an efficient, economical, and simplified ester composition preparation system, and an ester composition preparation method using the same. The ester composition preparation system is a simplified system which can reduce facility space, drastically remove reaction equipment, and reduce transfer time through the introduction of the integrated reactor in which the reaction preparing an ester compound and the reaction preparing an ester composition are carried out in one space, the mixed alcohol separation column and the gas-liquid separation column.
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公开(公告)号：US20180169542A1
公开(公告)日：2018-06-21
申请号：US15580393
申请日：2016-07-01
Applicant: LG CHEM, LTD
Inventor： Yeon Uk CHOO , Sung Kyu LEE , Tae Woo KIm , Jong Suh PARK , Joon Ho SHIN
CPC classification number: B01D3/143 , B01D3/141 , B01D3/32 , B01D3/36 , C07C37/08 , C07C45/53 , C07C45/84 , C07C39/04 , C07C49/08
Abstract: 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.
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公开(公告)号：US20170320796A1
公开(公告)日：2017-11-09
申请号：US15510134
申请日：2015-11-02
Applicant: LG CHEM, LTD.
Inventor： Sung Kyu LEE , Ho Joon SHIN
CPC classification number: C07C7/04 , B01D3/007 , B01D3/143 , B01D3/32 , B01D3/42 , B01D3/4211 , C07C9/15 , C07C11/02 , C07C11/107
Abstract: The present application relates to a distillation device. The distillation device of the present application can minimize energy loss occurring in a purification process of the olefin monomer, the solvent, and the raw material including, for example, 1-octene, iso-octene, and n-hexane, used in a polymerization process of the polyolefin elastomer, and can increase economic efficiency by isolating a high-purity product.
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公开(公告)号：US20170191704A1
公开(公告)日：2017-07-06
申请号：US15315681
申请日：2015-06-10
Applicant: LG CHEM, LTD.
Inventor： Tae Woo KIM , Sung Kyu LEE , Joon Ho SHIN
CPC classification number: F25B6/02 , F01K7/16 , F01K11/02 , F01K13/02 , F01K25/08 , F25B11/04 , F25B2339/047 , F25B2500/19 , Y02P20/123 , Y02P20/124 , Y02P80/154 , Y02P80/156
Abstract: The present application relates to a heat recovery apparatus and method. According to the heat recovery apparatus and method, low-level heat sources at a temperature less than 100° C. discharged from industrial settings or various chemical processes, for example, a petrochemicals manufacturing process are not wasted but used to generate steam and the generated steam is used for various processes to reduce an amount of consumed high-temperature steam that is an external heat source to be used for a reactor or distillation column, thereby not only maximizing energy reduction efficiency but also autonomously producing power consumed by a compressor. Also, an evaporation phenomenon of a part of a refrigerant flow which passes through the compressor may be reduced, thereby recovering heat with excellent efficiency.
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