公开(公告)号：US12264125B2

公开(公告)日：2025-04-01

申请号：US17765432

申请日：2021-08-12

Applicant: LG CHEM, LTD.

Inventor： Tae Woo Kim ,  Sung Kyu Lee ,  Byung Woo Choi ,  Hong Soo Joo ,  Dong Ha Lee

IPC: C07C29/76 ,  B01D15/36 ,  B01F25/431 ,  B03C1/28 ,  C10G25/02 ,  C10G32/02 ,  C10G53/02 ,  C10G53/08 ,  B01F25/00

Abstract: A method of removing a metal substance in a petrochemical product including: supplying a petrochemical product stream to an incoming tank through a supply pipe, circulating the petrochemical product stream through an incoming tank circulation pipe, and removing a metal substance included in the petrochemical product stream using a magnetic filter; transporting the petrochemical product stream to an outgoing tank through an incoming tank discharge pipe which is branched from the incoming tank circulation pipe and connected to an outgoing tank; circulating the petrochemical product stream through an outgoing tank circulation pipe provided in the outgoing tank and removing the metal substance included in the petrochemical product stream using a magnetic filter; and transporting the petrochemical product stream to a branch pipe branched from the outgoing tank circulation pipe to remove the metal substance using an ion exchange resin filter.

公开(公告)号：US12187968B2

公开(公告)日：2025-01-07

申请号：US17796837

申请日：2021-12-11

Applicant: LG CHEM, LTD.

Inventor： Sung June Hwang ,  Tae Woo Kim ,  Sik Ki ,  Sung Kyu Lee

IPC: C07C4/02 ,  C10J3/62

Abstract: Provided is a method for preparing synthesis gas and aromatic hydrocarbons, and more particularly, a method for preparing synthesis gas and aromatic hydrocarbons including: supplying a pyrolysis fuel oil (PFO) stream containing PFO and a pyrolysis gas oil (PGO) stream containing PGO to a distillation tower as a feed stream (S10), the PFO stream and the PGO stream being discharged from a naphtha cracking center (NCC) process; and supplying a lower discharge stream from the distillation tower to a combustion chamber for a gasification process and supplying an upper discharge stream from the distillation tower to an SM/BTX preparation process (S20).

公开(公告)号：US12134740B2

公开(公告)日：2024-11-05

申请号：US17430667

申请日：2020-11-09

Applicant: LG CHEM, LTD.

Inventor： Sung June Hwang ,  Tae Woo Kim ,  Sung Kyu Lee

IPC: C10G67/02 ,  B01D3/14 ,  B01D3/40 ,  B01J19/24

Abstract: An apparatus for producing aromatic hydrocarbons including: a C6 separation column; a C7 separation column; a first gasoline hydrogenation unit; a C8 separation column; an extractive distillation column; a hydrodealkylation reaction unit; and a second gasoline hydrogenation unit.

公开(公告)号：US12122740B2

公开(公告)日：2024-10-22

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

IPC: C07C31/10 ,  C07C29/76 ,  C07C29/78 ,  C07C29/80

CPC classification number: C07C31/10 ,  C07C29/76 ,  C07C29/78 ,  C07C29/80

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.

公开(公告)号：US20220306951A1

公开(公告)日：2022-09-29

申请号：US17430667

申请日：2020-11-09

Applicant: LG CHEM, LTD.

Inventor： Sung June Hwang ,  Tae Woo Kim ,  Sung Kyu Lee

IPC: C10G67/02 ,  B01J19/24 ,  B01D3/40 ,  B01D3/14

Abstract: An apparatus for producing aromatic hydrocarbons including: a C6 separation column; a C7 separation column; a first gasoline hydrogenation unit; a C8 separation column; an extractive distillation column; a hydrodealkylation reaction unit; and a second gasoline hydrogenation unit.

公开(公告)号：US10918968B2

公开(公告)日：2021-02-16

申请号：US16068041

申请日：2017-09-06

Applicant: LG CHEM, LTD.

Inventor： Tae Woo Kim ,  Sung Kyu Lee ,  Sung Kyun Kim ,  Joon Ho Shin ,  Yeon Uk Choo

IPC: B01D3/14 ,  B01D3/42 ,  B01D3/00 ,  B01D3/32 ,  C07C7/04

Abstract: 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.

公开(公告)号：US10105670B2

公开(公告)日：2018-10-23

申请号：US15022191

申请日：2014-09-17

Applicant: LG CHEM, LTD.

Inventor： Tae Woo Kim ,  Sung Kyu Lee ,  Joon Ho Shin

IPC: B01J19/00 ,  B01J10/00 ,  B01J19/24

Abstract: Disclosed are a heat recovery device and a heat recovery method. According to the heat recovery device, it is possible to recovery heat which is discontinuously generated in a batch reactor. In addition, a heat-exchanged heat exchange medium is supplied to a heat storage facility so that various kinds and a great quantity of steams can be produced, if necessary, thereby utilizing these produced steams in various industrial fields.

公开(公告)号：US12017978B2

公开(公告)日：2024-06-25

申请号：US17432022

申请日：2020-11-25

Applicant: LG CHEM, LTD.

Inventor： Sa Eun Park ,  Tae Woo Kim ,  Sung Kyu Lee

IPC: C07C29/76 ,  C07C29/04 ,  C07C29/80

CPC classification number: C07C29/76 ,  C07C29/04 ,  C07C29/80 ,  C07C29/04 ,  C07C31/10 ,  C07C29/76 ,  C07C31/10

Abstract: A method for preparing isopropyl alcohol including: feeding a feed stream containing a propylene monomer and water to a reaction unit, where the propylene monomer and the water react to form a reaction product containing isopropyl alcohol, the propylene monomer, and the water; feeding each of a first discharge stream and a second discharge stream discharged from the reaction unit to a stripper, where the first discharge stream contains a vapor-phase reaction product, which is condensed through a first heat exchanger and fed to the stripper in a liquid-phase, and wherein the second discharge stream contains a liquid-phase reaction product; and separating a top discharge stream and a bottom discharge stream from the stripper, wherein the top discharge stream contains the propylene monomer and the bottom discharge stream contains the water and the isopropyl alcohol.

公开(公告)号：US20230115643A1

公开(公告)日：2023-04-13

申请号：US16970415

申请日：2019-12-23

Applicant: LG CHEM, LTD.

Inventor： Tae Woo Kim ,  Sung Kyu Lee

IPC: F23G7/00

Abstract: Provided is a waste water incineration method including (S10) supplying waste water to an evaporator to evaporate the waste water, (S20) supplying an evaporator top discharge stream discharged from the evaporator to an incinerator to incinerate the discharge stream, (S30) mixing a first incinerator discharge stream and a second incinerator discharge stream discharged from the incinerator to form a mixed discharge stream, and (S40) heat-exchanging the mixed discharge stream and a fresh air stream in a first heat exchanger, wherein the mixed discharge stream which has passed through the first heat exchanger is heat-exchanged in a second heat exchanger and discharged to the atmosphere.

公开(公告)号：US11286216B2

公开(公告)日：2022-03-29

申请号：US16648541

申请日：2019-07-15

Applicant: LG CHEM, LTD.

Inventor： Tae Woo Kim ,  In Seop Kim ,  Sung Kyu Lee ,  Joon Ho Shin ,  Yeon Uk Choo

IPC: C07C4/02 ,  C07C7/00 ,  C07C7/09

Abstract: 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 passed through the first heat exchanger to the second compressor as a first circulation flow; passing a part of the compressed discharge stream of the second compressor through the second heat exchanger and feeding the part of the compressed discharge stream of the second compressor passed through the second heat exchanger to a first compressor as a second circulation flow; and feeding a compressed discharge stream of the first compressor to the second compressor, and an apparatus for preparing ethylene for implementing the same.