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    Method of preparing (meth)acrylonitrile-based polymer for preparing carbon fiber
    2.
    发明授权
    Method of preparing (meth)acrylonitrile-based polymer for preparing carbon fiber 有权

    公开(公告)号：US11046792B2

    公开(公告)日：2021-06-29

    申请号：US16469030

    申请日：2018-09-14

    申请人： LG CHEM, LTD.

    发明人： Jeong Hun Cho ,  Young Soo Song ,  Hyun Min Kim ,  Chang Hun Kim ,  Hyo Yong Kim ,  Joon Hee Cho

    IPC分类号： C08F2/01 ,  C08F2/06 ,  C08F20/44 ,  D01F9/22

    摘要： The present invention relates to a method of preparing a (meth)acrylonitrile-based polymer for preparing a carbon fiber, which comprises adding a reaction solution comprising a (meth)acrylonitrile-based monomer and a reaction solvent to a reactor to perform solution polymerization, performing solution polymerization under a condition in which a power consumption of the reactor is 1 to 5 kW/m3 when the reaction solution in the reactor has a viscosity of 0.1 poise or more and 250 poise or less, and performing solution polymerization under a condition in which a power consumption of the reactor is 8 to 13 kW/m3 when the reaction solution in the reactor has a viscosity of more than 250 poise and 450 poise or less.

    Mixer
    3.
    发明授权
    Mixer 有权

    公开(公告)号：US10035114B2

    公开(公告)日：2018-07-31

    申请号：US14439128

    申请日：2014-02-28

    申请人： LG CHEM, LTD.

    发明人： Jun Won Choi ,  Ye Hoon Im ,  Yu Shik Hong ,  Young Soo Song

    IPC分类号： B01F5/10 ,  B01F5/06 ,  B01F13/10

    CPC分类号： B01F5/10 ,  B01F5/0602 ,  B01F13/1016

    摘要： The present application relates to a mixer and a mixing method and, more specifically, to a pipe-type mixer for low-flow dispersion of immiscible liquids. The mixer, according to the present application, comprises: a pump (30) provided in a liquid transport section so as to supplement a deficient flow velocity, when materials to be mixed such as liquids are mixed through a continuous mixing step; and static mixers (22) suitable for the dispersion of the materials to be mixed by increasing a diameter of mixing parts (20) provided in a circulation pipe (10). Thus, a mixing rate of mixed materials can be more efficiently increased when the materials are mixed by using the static mixers (22).

    REACTOR FOR MIXING HIGH VISCOSITY FLUIDS
    4.
    发明申请
    REACTOR FOR MIXING HIGH VISCOSITY FLUIDS 审中-公开

    公开(公告)号：US20200254418A1

    公开(公告)日：2020-08-13

    申请号：US16642661

    申请日：2018-09-05

    申请人： LG CHEM, LTD.

    发明人： Dae Hun Kim ,  Young Soo Song ,  Ye Hoon Im ,  Hyun Tae Jung

    IPC分类号： B01J19/00 ,  B01F7/18 ,  B01F7/24 ,  B01F7/00 ,  B01F3/10 ,  B01F3/08

    摘要： A reactor is described. The reactor comprises a housing having a reaction space to accommodate a reactant; an outlet pipe connected to a lower part of the reaction space; a rotating shaft disposed in the housing; and a plurality of stirring blades mounted on the rotating shaft. The housing has a lower converging region, and a cross-sectional area of the lower converging region decreases toward the outlet pipe. At least one of the plurality of stirring blades is located in the lower converging region. The outlet pipe includes a first region connected to the lower converging region and a second region extending from the first region in a discharge direction, a cross-sectional area of the first region decreases in a direction from the lower converging region toward the discharge direction, and the second region has a constant cross-sectional area.

    Polymerization reactor
    5.
    发明授权
    Polymerization reactor 有权

    公开(公告)号：US10201798B2

    公开(公告)日：2019-02-12

    申请号：US15557971

    申请日：2016-03-17

    申请人： LG Chem, Ltd.

    发明人： Hyun Jin Shin ,  Young Soo Song ,  Ye Hoon Im

    IPC分类号： B01J19/20 ,  B01J8/38 ,  C08F2/01

    摘要： The present invention relates to a polymerization reactor. The polymerization reactor according to one aspect of the present invention comprises: a housing including a supply part for supplying a reactant; a tube which is provided inside the housing and extends along the height direction of the housing; a first impeller including a blade which spirally surrounds the tube along the height direction of the housing; a second impeller which is provided inside the housing in order to enable the reactant to flow into the tube; and a partition wall which is provided to surround the second impeller along the circumferential direction.

    Distributor and down flow catalytic reactor comprising same
    8.
    发明授权
    Distributor and down flow catalytic reactor comprising same 有权

    公开(公告)号：US10137424B2

    公开(公告)日：2018-11-27

    申请号：US15749740

    申请日：2016-08-23

    申请人： LG CHEM, LTD.

    发明人： Jun Young Lee ,  Young Soo Song ,  Ye Hoon Im

    IPC分类号： B01J8/02 ,  B01J8/04 ,  B05B1/14 ,  B01J19/26 ,  B01J4/00

    摘要： The present invention relates to a distributor and a down flow catalytic reactor comprising same, and according to one aspect of the present invention, provides a distributor comprising: an inside downcomer which has a first flow space; an outside downcomer which is disposed so as to surround at least some area of the inside downcomer, and has a second flow space partitioned from the first flow space of the inside downcomer; an outside cap which has a plurality of first slots and is mounted on the inside downcomer so as to enable a fluid that has passed through the first slots to flow to the first flow space; and an inside cap which has a plurality of second slots and is mounted on the outside downcomer so as to enable a fluid that has passed through the second slots to flow to the second flow space.

    POLYMERIZATION REACTOR
    9.
    发明申请
    POLYMERIZATION REACTOR 审中-公开

    公开(公告)号：US20180050318A1

    公开(公告)日：2018-02-22

    申请号：US15557971

    申请日：2016-03-17

    申请人： LG Chem, Ltd.

    发明人： Hyun Jin Shin ,  Young Soo Song ,  Ye Hoon Im

    IPC分类号： B01J19/20 ,  B01J8/38 ,  C08F2/01

    CPC分类号： B01J19/20 ,  B01J8/38 ,  B01J8/382 ,  B01J2219/00051 ,  B01J2219/00164 ,  C08F2/01

    摘要： The present invention relates to a polymerization reactor. The polymerization reactor according to one aspect of the present invention comprises: a housing including a supply part for supplying a reactant; a tube which is provided inside the housing and extends along the height direction of the housing; a first impeller including a blade which spirally surrounds the tube along the height direction of the housing; a second impeller which is provided inside the housing in order to enable the reactant to flow into the tube; and a partition wall which is provided to surround the second impeller along the circumferential direction.