Patent ID: 6409922
Filing Date: 2002-06-25
Classification: B01D,C07H,C13B,C13K,G01N

Abstract:
A chromatographic separation process for separating a starting fluid material comprising at least three components into at least three fractions, said process comprising:a) providing a chromatographic separator comprising a plurality of packing beds packed with chromatographic packing, said chromatographic packing at least in part comprising ion exchanger, and in which chromatographic separator at least the position of feeding desorbent is intermittently displaced in the direction of fluid flow; b) separating said starting fluid material with said chromatographic separator to yield a plurality of fractions; c) manipulating the ion exchanger so as to change at least part (based on ion exchange capacity) of the ionic form of part of said ion exchanger to yield changed ion exchanger; and d) separating at least one of said fractions with said changed ion exchanger to yield a further plurality of fractions.