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    DIVIDING WALL DISTILLATION COLUMNS FOR PRODUCTION OF HIGH-PURITY 2-ETHYLHEXANOL AND FRACTIONATION METHOD USING SAME
    62.
    发明申请
    DIVIDING WALL DISTILLATION COLUMNS FOR PRODUCTION OF HIGH-PURITY 2-ETHYLHEXANOL AND FRACTIONATION METHOD USING SAME 有权
    用于生产高纯度2-乙基己内酯和分离方法的分隔壁蒸馏塔

    公开(公告)号：US20130334029A1

    公开(公告)日：2013-12-19

    申请号：US13943536

    申请日：2013-07-16

    Applicant: LG CHEM, LTD.

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

    IPC: B01D3/14

    CPC classification number: B01D3/141 ,  B01D3/14 ,  C07C29/80 ,  C07C31/125

    Abstract: A dividing wall distillation column for producing high-purity 2-ethyl hexanol including a condenser, a reboiler and a main column having a dividing wall. The main column is divided into a column-top zone, an upper feed zone, an upper outflow zone, a lower feed zone, a lower outflow zone and a column-bottom zone. A crude 2-ethyl hexanol raw material (F) flows in a middle inflow plate NR1 in which the upper feed zone and the lower feed zone come in contact with each other, a low boiling point component (D) flows out from the column-top zone, a high boiling point component (B) flows out from the column-bottom zone, and a middle boiling point component (S) flows out through a middle outflow plate NR2 in which the upper outflow zone and the lower outflow zone come in contact with each other, where the middle boiling point component is 2-ethyl hexanol.

    Abstract translation: 用于生产高纯度2-乙基己醇的分隔壁蒸馏塔，包括冷凝器，再沸器和具有分隔壁的主柱。 主塔分为塔顶区，上进料区，上流出区，下进料区，下流出区和塔底区。 粗制的2-乙基己醇原料（F）在上进料区和下进料区相互接触的中流入板NR1中流动，低沸点组分（D）从柱 - 顶部区域，高沸点组分（B）从塔底区域流出，中间沸点组分（S）通过中流出板NR2流出，其中上流出区域和下流出区域进入 彼此接触，其中中间沸点组分是2-乙基己醇。

    METHOD FOR PREPARING NEOPENTYL GLYCOL
    63.
    发明申请
    METHOD FOR PREPARING NEOPENTYL GLYCOL 有权

    公开(公告)号：US20250154086A1

    公开(公告)日：2025-05-15

    申请号：US18699478

    申请日：2023-09-01

    Applicant: LG CHEM, LTD.

    Inventor： Sung Kyun KIM ,  Sung Kyu LEE ,  Gi Su BAEK ,  Na Ro HA

    IPC: C07C29/141 ,  C07C45/64 ,  C07C45/82

    Abstract: A method for preparing neopentyl glycol including: performing an aldol condensation reaction to obtain a first reaction product including hydroxypivaldehyde; bringing the first reaction product into contact with an extractant and distilling it to obtain an extract and a raffinate; supplying the raffinate to a saponification reactor to reduce the raffinate with a catalyst; supplying the extract and the catalyst to an aldol purification column and distilling them to be separated into an upper discharge stream and a lower discharge stream; supplying the lower discharge stream from the aldol purification column to a hydrogenation reactor to obtain a second reaction product including neopentyl glycol, and obtaining neopentyl glycol from the second reaction product.

    DIESTER-BASED MATERIAL PRODUCTION UNIT AND DIESTER-BASED MATERIAL PRODUCTION SYSTEM INCLUDING THE SAME
    69.
    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：US20220220058A1

    公开(公告)日：2022-07-14

    申请号：US17603859

    申请日：2020-07-02

    Applicant: LG CHEM, LTD.

    Inventor： Jae Hun JEONG ,  Sung Kyu LEE ,  Yeon Uk CHOO ,  Hyoung JUN ,  Hyun Kyu KIM ,  Chan Hyu JIN ,  Jin Sung PARK

    IPC: C07C67/08 ,  C07C67/52 ,  B01D3/00 ,  B01D3/06

    Abstract: The present disclosure relates to a diester-based material production unit including a reaction device in which an esterification reaction of dicarboxylic acid and a primary alcohol is performed, a column in which the gas-liquid separation of the primary alcohol and the water introduced is performed, a heat exchanger installed on a gas phase line of the column to remove heat of the gas phase line, a flash drum in which separation of a liquid phase and a gas phase is performed in the mixture stream including the primary alcohol and the water, a condenser installed on the flash drum upper line, and a layer separator in which the layer separation of a mixture of a liquefied primary alcohol and water into an organic layer and an aqueous layer is performed, wherein one or more lines through which recirculated primary alcohol from the flash drum and the layer separator flows are connected to an upper portion of the column. According to the present invention, a coolant usage amount can be reduced and a rheological problem can be eliminated since a liquid phase and a gas phase coexist in a pipe.

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