Fractionating columns with movable parts or in which centrifugal movement is caused

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Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping ( gas chromatography B01D15/08; destructive distillation C10B; preparation of alcoholic beverages by distillation C12H6/02) > Fractional distillation > Fractionating columns with movable parts or in which centrifugal movement is caused