3.
    发明专利
    未知

    公开(公告)号:BRPI0605895A

    公开(公告)日:2007-12-18

    申请号:BRPI0605895

    申请日:2006-06-30

    Applicant: BASF AG

    Abstract: The invention relates to a process for separating off maleic anhydride from a gas stream comprising maleic anhydride, in which a) the gas stream comprising maleic anhydride is brought into contact with a liquid absorbent phase comprising at least one high-boiling inert absorption medium for maleic anhydride and b) maleic anhydride is separated off from the resulting liquid absorbate phase by stripping with a hydrogen-comprising gas as stripping medium in a column, wherein the stripping medium is fed in at two points on the column which are at least one theoretical plate apart.

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