Patent ID: 7022239
Filing Date: 2006-04-04
Classification: B01D,G01N

Abstract:
1. Method of fractionating liquid mixtures or solutions, comprising the steps of subjecting a feed in the form of a liquid mixture or solution comprising three or more components to a first chromatographic separation, thereby recovering at least a fraction (A) and a fraction (B) both containing a first component or product, which is in the middle of eluting components in a dry solids profile of said eluting components, subjecting a mixture or solution derived from or comprising said fraction (A) to a second chromatographic separation, thereby recovering at least a fraction (C) which has a higher weight percentage of said first component or product than the feed, and subjecting a mixture or solution derived from or comprising said fraction (B) to a third chromatographic separation, thereby recovering at least a fraction (D) which also has a higher weight percentage of said first component or product than the feed, and whereby at least two fractions are recovered from the second and third chromatographic separations.