Patent ID: 9180387
Filing Date: 2015-11-10
Classification: B01D,G01N

Abstract:
1. A method for separating fractions of a mixture to be separated, in a device ( 1 ) having: several chromatography columns ( a single separation zone constituted by a constantly open separation loop comprising, at the inlet of the open separation loop an eluent-injection point ( a mixture injection stage for discontinuous injection of the mixture to be separated into the open separation loop ( a collection stage for collection of at least two fractions, and a shifting stage for shifting by at least one column the eluent-injection point ( wherein (a) during the shifting stage, the eluent-injection and draw-off points of the separation loop are shifted at different times, or (b) said device further comprises at least one other loop, or (c) in which the eluent-injection and draw-off points of the separation loop are not contiguous.