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17 条记录 (耗时 0.016 秒)

    Method of refining raffinate-2
    1.
    发明授权
    Method of refining raffinate-2 有权

    公开(公告)号：US11746072B2

    公开(公告)日：2023-09-05

    申请号：US16625333

    申请日：2018-07-20

    申请人： LG CHEM, LTD.

    发明人： Sung Kyun Kim ,  Sung Kyu Lee ,  Yong Mann Beyun ,  Joon Ho Shin ,  Ji Hye Kim

    IPC分类号： C07C7/04 ,  B01D3/14 ,  C07C7/00 ,  B01D3/00 ,  C07C9/10 ,  C07C11/08

    CPC分类号： C07C7/04 ,  B01D3/007 ,  B01D3/143 ,  B01D3/146 ,  C07C7/005 ,  C07C9/10 ,  C07C11/08

    摘要： A method for separating and refining 1-butene with a high purity and a high yield from a raffinate-2 stream. The method includes: feeding raffinate-2 to a first distillation column; obtaining heavy raffinate-3 from a lower part of the first distillation column; recovering an upper part fraction containing 1-butene from an upper part of the first distillation column; feeding the upper part fraction containing 1-butene to a second distillation column; recovering a first lower part fraction rich in 1-butene from a lower part of the second distillation column and light raffinate-3 from an upper part of the second distillation column. Heat of the upper part fraction recovered from the upper part of the first distillation column is fed to the lower part of the second distillation column through a first heat exchanger. Thus, 1-butene is obtained with high purity and high yield while maximizing an energy recovery amount by double-effect distillation.

    Apparatus and method for purifying cumene
    4.
    发明授权
    Apparatus and method for purifying cumene 有权

    公开(公告)号：US10464866B2

    公开(公告)日：2019-11-05

    申请号：US15304017

    申请日：2015-05-22

    申请人： LG CHEM, LTD.

    发明人： Sung Kyun Kim ,  Sung Kyu Lee ,  Joon Ho Shin

    IPC分类号： C07C7/04 ,  B01D3/14

    摘要： The present application relates to an apparatus for purifying cumene comprising: a first dividing wall type distillation column which takes in a stream from an alkylation reactor and comprises a first benzene output line and a benzene/cumene/polyisopropylbenzene stream output line; a second dividing wall type distillation column which takes in a stream from a transalkylation reactor and a benzene/cumene/polyisopropylbenzene stream, includes a transalkylation reactor stream input line, a benzene/cumene/polyisopropylbenzene stream input line, a second benzene output line, and a first polyisopropylbenzene stream output line; and a third distillation column which takes in a polyisopropylbenzene stream, includes a second polyisopropylbenzene output line, and a heavies output line.