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    METHOD FOR WORKING UP CRUDE 1,3-BUTADIENE
    34.
    发明专利
    METHOD FOR WORKING UP CRUDE 1,3-BUTADIENE 未知

    公开(公告)号：AU2003250141A1

    公开(公告)日：2004-02-16

    申请号：AU2003250141

    申请日：2003-07-23

    Applicant: BASF AG

    Inventor： KINDLER KLAUS ,  HEIDA BERND ,  HILL THOMAS

    IPC: C07C7/08 ,  C07C11/167

    Abstract: Sudstituted the abstract with a new abstract as follows: The invention relates to a continuous process for separation a mixture of hydrocarbons which has beenobtained by extractive distillation of C 4 fraction useing a selective solvent and the hydrocarbons from the fraction C 4 which are more readily soluble in the selective solvent than are the butanes and the butenes. The mixture is fed into a first distillation column in which it is separated into a steam which is taken off at the top and comprises 1,3-butadiene, propyne, possibly further low boilers and possibly water and a bottom stream comprising 1,3-butadiene, 1,2-butadiene, acetylenes and possibly further high boilers, with the proportion of 1,3-butadiene in the bottom stream from the distillatin column being regulated in such a way that it is at least sufficiently high to dilute the acetylenes to outside the range in which there is a risk of spontaneous decomposition. The stream taken off from the top of the first distillation column is fed to a second distillation column and is separated into a steam which is taken off at the top and comprises propyne, possibly further low boilers and possibly water and a bottom stream comprising pure 1,3-butadiene in the second distillation column.

    METHOD FOR WORKING UP CRUDE 1,3-BUTADIENE
    35.
    发明专利
    METHOD FOR WORKING UP CRUDE 1,3-BUTADIENE 未知

    公开(公告)号：CA2493080A1

    公开(公告)日：2004-02-05

    申请号：CA2493080

    申请日：2003-07-23

    Applicant: BASF AG

    Inventor： HILL THOMAS ,  KINDLER KLAUS ,  HEIDA BERND

    IPC: C07C7/08 ,  C07C11/167

    Abstract: The invention relates to a continuous method for the separation of a mixture of hydrocarbons, obtained by extractive distillation of a C4 fraction (C4) with a selective solvent (LM) and comprising the hydrocarbons from the C4 fraction (C4), which are more soluble in the selective solvent (LM) than butane or butene. The mixture is fed to a first distillation column (K I), i n which said mixture is separated into a top stream (K I-K), comprising 1,3- butadiene, propyne, optionally further low boilers and optionally water and a bottom stream (K I-S), comprising 1,3-butadiene, 1,2-butadiene, acetylene an d optionally further high boilers, whereby the proportion of 1,3-butadiene in the bottom stream (K I-S) of the distillation column (K I) is regulated such as to be at least high enough to dilute the acetylene from that region with a risk of spontaneous decomposition. The top stream (K I - K) from the first distillation column (K I) is fed to a second distillation column (K II) and separated in the second distillation column (K II) into a top stream (K II-K ), comprising propyne, optionally further low boilers and optionally water and a bottom stream (K II-S), comprising pure 1,3-butadiene.

    37.
    发明专利
    未知

    公开(公告)号：DE10209701A1

    公开(公告)日：2003-09-18

    申请号：DE10209701

    申请日：2002-03-06

    Applicant: BASF AG

    Inventor： PESCHEL WERNER ,  ADRIAN TILL ,  RUST HARALD ,  BOETTCHER ARND ,  HILL THOMAS ,  MUELLER ULRICH ,  PAPP RAINER

    IPC: C07B61/00 ,  C07C29/04 ,  C07C35/08 ,  C07C5/11 ,  C07C29/74

    Abstract: A process for preparing cyclohexanol from benzene by: a) preparing cyclohexene by hydrogenating benzene in the presence of a catalyst, and b) preparing cyclohexanol by hydrating the cyclohexene in the presence of a catalyst, comprises: carrying out steps a) and b) in a reaction facility which has a bottom region at the lower end, a top region at the upper end, and a reaction zone between the top region and the bottom region which contains the catalyst according to steps a) and b), evaporating a portion of the benzene using the heat of reaction in the reaction zone, condensing it in the top region and returning it to the reaction zone, and withdrawing a reaction mixture containing cyclohexanol in the bottom region.

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