RECOVERY OF ISOPRENE FROM A C.SUB.5-HYDROCARBON MIXTURE

    公开(公告)号:CA1218030A

    公开(公告)日:1987-02-17

    申请号:CA465906

    申请日:1984-10-19

    Applicant: BASF AG

    Abstract: Isoprene is recovered from a C5-hydrocarbon mixture containing isoprene, penta-1,3-diene and cyclopentadiene by separating the said mixture by liquid-liquid extraction or extractive distillation with the aid of a selective solvent, in combination with a distillation upstream or downstream from the liquidliquid extraction or extractive distillation, by a method in which a stream containing penta-1,3-diene and cyclopentadiene is separated off in the upstream or downstream distillation and is catalytically hydrogenated, and the hydrogenated stream is fed to the upper part of the liquid-liquid extraction or extractive distillation.

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