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    BATCH PREPARATION METHOD FOR ESTER-BASED MATERIAL
    92.
    发明公开
    BATCH PREPARATION METHOD FOR ESTER-BASED MATERIAL 审中-公开

    公开(公告)号：EP4219440A1

    公开(公告)日：2023-08-02

    申请号：EP21872879.8

    申请日：2021-09-17

    申请人： Lg Chem, Ltd.

    发明人： KIM, Hyun Kyu ,  MOON, Jeong Ju ,  KIM, Eun Suk ,  HEO, Yun Gon

    IPC分类号： C07C67/08 ,  C07C67/56 ,  C07C67/58

    摘要： The present invention provides a method for preparing an ester-based material, the method including a step in which in a batch reactor, under a catalyst, at least one polycarboxylic acid selected from the group consisting of a terephthalic acid, a phthalic acid, an isophthalic acid, a cyclohexane dicarboxylic acid, a cyclohexane tricarboxylic acid, a trimellitic acid, and citric acid reacts with at least one mono-alcohol having 3 to 12 alkyl carbon atoms, wherein pressure in the reactor is configured such that the pressure at the early stage is 0.3 barg to 1.0 barg and the pressure at the latter stage is 0 barg to 0.5 barg, the pressure at the early stage being greater than the pressure at the latter stage, and the early and latter stages are divided based on any one of the time points when reaction conversion rate is 30% to 90%, and when the method is applied, the productivity of an ester-based material may increase and energy consumption in processes may be reduced.

    BUBBLE COLUMN REACTOR
    93.
    发明公开
    BUBBLE COLUMN REACTOR 审中-公开

    公开(公告)号：EP4218999A1

    公开(公告)日：2023-08-02

    申请号：EP22838621.5

    申请日：2022-06-17

    申请人： LG CHEM, LTD.

    发明人： HWANG, Moon Sub ,  LEE, Hong Min ,  LEE, Jeong Seok ,  SONG, Jong Hun ,  YOUK, Kyung Seog

    IPC分类号： B01J8/22 ,  B01J10/00

    摘要： Provided is a bubble column reactor including a reaction zone in which a reaction of a gaseous reactant is carried out in a liquid reaction medium, a first disengaging section provided above the reaction zone and into which a first effluent stream rising from the reaction zone is introduced, and a condensation zone provided above the first disengaging section, wherein a diameter of the condensation zone is smaller than a diameter of the first disengaging section.

    BUBBLE COLUMN REACTOR
    94.
    发明公开
    BUBBLE COLUMN REACTOR 审中-公开

    公开(公告)号：EP4218997A1

    公开(公告)日：2023-08-02

    申请号：EP22862401.1

    申请日：2022-07-05

    申请人： LG CHEM, LTD.

    发明人： HWANG, Moon Sub ,  LEE, Hong Min ,  LEE, Jeong Seok ,  SONG, Jong Hun ,  YOUK, Kyung Seog

    IPC分类号： B01J8/00 ,  B01J8/06 ,  B01D5/00 ,  C07C2/08 ,  C07C11/04 ,  C07C11/107

    摘要： Provided is a bubble column reactor including a reaction zone in which a reaction of a gaseous reactant is carried out in a liquid reaction medium; a disengaging section provided above the reaction zone and into which a first gas stream rising from the reaction zone is introduced; and a condensation zone provided above the disengaging section and into which a second gas stream rising from the disengaging section is introduced, wherein a diameter of the condensation zone is greater than a diameter of the disengaging section.

    REACTOR
    100.
    发明公开
    REACTOR 审中-公开

    公开(公告)号：EP4212237A1

    公开(公告)日：2023-07-19

    申请号：EP21867090.9

    申请日：2021-09-07

    申请人： Lg Chem, Ltd.

    发明人： HEO, Seong Beom ,  LEE, Jin ,  BAEK, Jong Yeol ,  KIM, Won Hee

    IPC分类号： B01J8/08 ,  B01J8/10

    摘要： The present invention relates to a reactor. The reactor according to an embodiment of the present invention comprises: a reactor tank having an accommodation space therein in which a polymerization reaction of a reactive fluid is performed; an outer refrigerant jacket which is positioned outside the reactor tank and through which a refrigerant flows; and an inner refrigerant jacket which is positioned inside the reactor tank and through which a refrigerant flows. The refrigerants of the outer refrigerant jacket and the inner refrigerant jacket may flow in opposite directions to each other.