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    DISTILLATION APPARATUS
    11.
    发明申请
    DISTILLATION APPARATUS 有权
    蒸馏装置

    公开(公告)号：US20160193541A1

    公开(公告)日：2016-07-07

    申请号：US14905618

    申请日：2014-07-18

    Applicant: LG CHEM, LTD.

    Inventor： Sung Kyu LEE ,  Joon Ho SHIN ,  Sung Kyun KIM ,  Jong Ku LEE

    IPC: B01D3/14 ,  C07C67/54

    CPC classification number: B01D3/141 ,  B01D3/008 ,  B01D3/14 ,  B01D3/143 ,  B01D3/32 ,  C07C41/42 ,  C07C67/54 ,  C07C69/54

    Abstract: The present application relates to a distillation apparatus and a separation method, and according to the distillation apparatus and the separation method of the present application, it is possible to separate a material to be separated during the separation of a mixture of three or more components, for example, 2-ethylhexyl acrylate with high purity, and to achieve an object of saving energy during the separation and purification process of 2-ethylhexyl acrylate.

    Abstract translation: 本申请涉及蒸馏装置和分离方法，并且根据本申请的蒸馏装置和分离方法，可以在三种或更多种组分的混合物分离期间分离待分离的材料， 例如具有高纯度的丙烯酸2-乙基己酯，并且在丙烯酸2-乙基己酯的分离和纯化过程中达到节能的目的。

    METHOD FOR PREPARING ISOPROPYL ALCOHOL
    13.
    发明申请
    METHOD FOR PREPARING ISOPROPYL ALCOHOL 有权

    公开(公告)号：US20250026701A1

    公开(公告)日：2025-01-23

    申请号：US18711533

    申请日：2023-05-25

    Applicant: LG CHEM, LTD.

    Inventor： Sung June HWANG ,  Sung Kyu LEE ,  Kyung Soo JANG ,  Kil Taek LIM

    IPC: C07C29/17 ,  C07C29/74

    Abstract: A method for preparing isopropyl alcohol is provided. The method includes passing reaction water through a first heat exchanger and a second heat exchanger to heat the reaction water, supplying the reaction water having passed through the second heat exchanger to a reactor as a feed stream with a propylene monomer to produce a gaseous reaction product including isopropyl alcohol (IPA), purifying isopropyl alcohol from the gaseous reaction product and recovering process water, and passing the process water through the second heat exchanger to cool the process water, and transferring a portion of the cooled process water to the first heat exchanger, wherein the reaction water is brought into contact with the portion of the cooled process water in the first heat exchanger for primary heating, and then brought into contact with the process water in the second heat exchanger for secondary heating.

    METHOD FOR PREPARING SYNTHESIS GAS
    15.
    发明公开
    METHOD FOR PREPARING SYNTHESIS GAS 审中-公开

    公开(公告)号：US20230257262A1

    公开(公告)日：2023-08-17

    申请号：US17797064

    申请日：2021-12-11

    Applicant: LG CHEM, LTD.

    Inventor： Sung June HWANG ,  Tae Woo KIM ,  Sik KI ,  Sung Kyu LEE

    IPC: C01B3/36

    CPC classification number: C01B3/36 ,  C01B2203/1247 ,  C01B2203/1258

    Abstract: Provided is a method for preparing synthesis gas, and more particularly, a method for preparing synthesis gas including: supplying a pyrolysis gas oil (PGO) stream including a PGO discharged from a naphtha cracking center (NCC) process to a distillation tower; and supplying a lower discharge stream from the distillation tower and a pyrolysis fuel oil (PFO) stream including a PFO discharged from the naphtha cracking center (NCC) process to a combustion chamber for a gasification process as a feed stream to obtain synthesis gas.

    DIESTER-BASED MATERIAL PRODUCTION UNIT AND DIESTER-BASED MATERIAL PRODUCTION SYSTEM INCLUDING THE SAME
    19.
    发明申请
    DIESTER-BASED MATERIAL PRODUCTION UNIT AND DIESTER-BASED MATERIAL PRODUCTION SYSTEM INCLUDING THE SAME 有权

    公开(公告)号：US20220213019A1

    公开(公告)日：2022-07-07

    申请号：US17603549

    申请日：2020-07-02

    Applicant: LG CHEM, LTD.

    Inventor： Jae Hun JEONG ,  Sung Kyu LEE ,  Yeon Uk CHOO ,  Seok Goo LEE

    IPC: C07C67/08 ,  B01J19/00 ,  B01J19/24 ,  C07C67/475 ,  C07C67/52 ,  B01D17/02 ,  B01D19/00

    Abstract: The present disclosure relates to a continuous production system and a diester-material production unit included therein, wherein the production unit includes a reaction device in which an esterification reaction of dicarboxylic acid and a primary alcohol is performed, a column in which gas-liquid separation of the primary alcohol and the water introduced is performed, a heat exchange device for recovering heat of a gas phase line of the column, a condenser installed at a rear end of the heat exchange device and liquefying a mixture of a gas-phase primary alcohol and water, and a layer separator in which the layer separation of a mixture of a liquefied primary alcohol and water is performed, wherein the heat exchange device includes one or more of a first heat exchanger for performing heat exchange with a raw material feed line of the reaction device, a second heat exchanger for performing heat exchange with a line through which a low temperature stream flows in a process, and a third heat exchanger for performing heat exchange with condensed water generated in the process. According to the present disclosure, the amount of a coolant used and the volume of steam of a reactor may be reduced, and the thermal efficiency of the entire process may be improved.

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