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    Production of very pure butanediol
    1.
    发明授权
    Production of very pure butanediol 失效
    生产非常纯的丁二醇

    公开(公告)号：US3891511A

    公开(公告)日：1975-06-24

    申请号：US27236672

    申请日：1972-07-17

    Applicant: BASF AG

    Inventor： DANNEIL AXEL ,  FLICKINGER ERICH ,  GRAEFJE HEINZ ,  PLASS REINHOLD ,  SCHNUR RUDOLF

    IPC: C07C29/80 ,  C07C31/20 ,  B01D3/00

    CPC classification number: C07C29/80 ,  C07C31/207

    Abstract: Production of very pure butanediol-1,4 by separating in column 1 crude butanediol into a fraction A containing butanediol and lower boiling components and a fraction B containing higher boiling components, separating fraction A in column 2 into an overhead and a bottoms product consisting of very pure butanediol and separating fraction B in column 3 into butanediol of lower purity and components of higher boiling point.

    Abstract translation: 通过在第1列粗丁二醇中分离成含有丁二醇和低沸点组分的级分A和含较高沸点组分的级分B，生产非常纯的丁二醇-1,4，将第2列中的馏分A分离成塔顶馏出物和由 非常纯的丁二醇和第3列中的分离馏分B为较低纯度的丁二醇和较高沸点的组分。

    Separating ammonia from trimethylamine
    3.
    发明专利
    Separating ammonia from trimethylamine 未知

    公开(公告)号：GB1049579A

    公开(公告)日：1966-11-30

    申请号：GB3560163

    申请日：1963-09-10

    Applicant: BASF AG

    Inventor： HAARER ERICH ,  PLASS REINHOLD

    IPC: C01C1/00 ,  C01C1/10 ,  C01C1/12

    Abstract: The individual components of a mixture consisting essentially of ammonia and trimethylamine, containing traces of mono- and di-, are separated by (a) cooling the mixture to - 55 DEG to - 85 DEG C., preferably - 65 DEG to - 85 DEG C., and (b) adding 0.5 to 6%, preferably 0.5 to 1.5%, by weight of water, in either sequence, and separating the resulting two layers from each other. The lower layer, according to the examples, is the aqueous layer containing most of the ammonia.ALSO:The individual components of a mixture consisting essentially of ammonia and trimethylamine, containing traces of mono- and diare separated by (a) cooling the mixture to -55 DEG to -85 DEG C., preferably -65 DEG to -85 DEG C., and (b) adding 0.5 to 6%, preferably 0.5 to 1.5%, by weight of water, in either sequence, and separating the resulting two layers from each other. The lower layer, according to the examples is the aqueous layer containing most of the ammonia.

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