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    26.
    发明专利
    未知

    公开(公告)号：DE50100605D1

    公开(公告)日：2003-10-16

    申请号：DE50100605

    申请日：2001-02-13

    Applicant: BASF AG

    Inventor： WALCZUCH KARL-HEINZ ,  MUELLER ROLF ,  KROKOSZINSKI ROLAND ,  GEISSLER BERNHARD

    IPC: C07B61/00 ,  C07C45/50 ,  C07C47/02

    Abstract: A liquid output from a continuous hydroformylation, which comprises essentially aldehydes, high-boiling by-products, a homogeneously dissolved hydroformylation catalyst, unreacted olefins, low-boiling by-products and dissolved synthesis gas, is worked up by a process in which a) the liquid hydroformylation output is depressurized in a first depressurization stage to a pressure which is from 2 to 20 bar below the reactor pressure, resulting in separation into a liquid phase and a gas phase, and b) the liquid phase obtained in the first depressurization stage is depressurized in a second depressurization stage to a pressure which is lower than the pressure of the first depressurization stage, resulting in separation into a liquid phase comprising essentially high-boiling by-products of the hydroformylation, the homogeneously dissolved hydroformylation catalyst and small amounts of hydroformylation product and unreacted olefin and a gas phase comprising essentially the major part of the hydroformylation product, unreacted olefin and low-boiling by-products.

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