Separation of toluene from methyl isobutyl ketone by azeotropic
distillation
    11.
    发明授权
    Separation of toluene from methyl isobutyl ketone by azeotropic distillation 失效
    通过共沸蒸馏从甲基异丁基酮中分离出甲苯

    公开(公告)号:US5250157A

    公开(公告)日:1993-10-05

    申请号:US20397

    申请日:1993-02-22

    IPC分类号: C07C7/06 C07C45/84 B01D3/36

    CPC分类号: C07C7/06 C07C45/84

    摘要: Toluene cannot be separated from methyl isobutyl ketone by conventional distillation or rectification because of the minimum boiling azeotrope. Toluene can be readily separated from methyl isobutyl ketone by using azeotropic distillation. Typical examples of effective agents are 1-butanol, 2-methoxyethanol and n-heptane.

    摘要翻译: 由于最低沸点的共沸物,甲苯不能通过常规蒸馏或精馏从甲基异丁基酮中分离出来。 通过共沸蒸馏可以容易地将甲苯与甲基异丁基酮分离。 有效试剂的典型实例是1-丁醇,2-甲氧基乙醇和正庚烷。

    Separation of m-diisopropyl benzene from p-diisopropyl benzene by
azeotropic distillation with ketones
    12.
    发明授权
    Separation of m-diisopropyl benzene from p-diisopropyl benzene by azeotropic distillation with ketones 失效
    通过与酮共沸蒸馏分离间二异丙基苯与对二异丙基苯

    公开(公告)号:US4877491A

    公开(公告)日:1989-10-31

    申请号:US270200

    申请日:1988-11-14

    申请人: Lloyd Berg

    发明人: Lloyd Berg

    IPC分类号: C07C7/06

    CPC分类号: C07C7/06

    摘要: Meta and para-diisopropylbenzenes cannot be easily separated from each other by distillation because of the closeness of their vapor pressures. m-Diisopropylbenzene can be readily removed from p-diisopropylbenzene by azeotropic distillation using certain ketones. Typical effective azeotropic distillation agents are acetophenone, 2-undecanone and acetonyl acetone.

    摘要翻译: 由于它们的蒸气压接近,不能通过蒸馏将元和对二异丙基苯彼此分离。 可以使用某些酮通过共沸蒸馏,从对二异丙基苯中容易地除去间二异丙基苯。 典型的有效共沸蒸馏剂是苯乙酮,2-十一烷酮和丙酮丙酮。