METHOD FOR TREATING A PRODUCT STREAM CONTAINING VITAMIN E ACETATE

    公开(公告)号:CA2454367A1

    公开(公告)日:2003-02-13

    申请号:CA2454367

    申请日:2002-07-09

    Applicant: BASF AG

    Abstract: The invention relates to a method for treating a product stream containing vitamin E acetate, consisting of the following stages: a) the product stream is fed to a thin-film evaporator, falling-film evaporator or flash evaporato r and a stream predominantly containing vitamin E acetate is drawn off as a bottom stream from said evaporator; b) the vapour stream from stage a) is fe d to a partial condensation consisting of at least two stages. The invention also relates to falling-film evaporators for separating substance mixtures, whereby one or more heat exchangers are directly integrated into the vapour chamber of the falling-film evaporator.

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