A chromatographic process utilizing a fluidised bed

Details A chromatographic process utilizing a fluidised bed A chromatographic process utilizing a fluidised bed

B - Operations, Transporting

01

D

B01D 15/18 (2006.01) B01D 15/08 (2006.01) B01J 8/20 (2006.01)

Patent

CA 2350690

A liquid chromatographic process performed at least partly in a fluidised bed contained in a vessel and comprising particles fluidised by an upwardly directed liquid flow, said process comprising (a) a capture step in which one or more compounds of a sample are captured by the particles and (b) a wash and/or releasing step in which the particles are in form of a fluidised bed through which a liquid flow is passing. The characteristic feature is that the liquid (liquid 1) used in the wash or the releasing step (step 1) is immediately followed by a liquid (liquid 2, step 2) having a higher density than liquid (1) while maintaining the bed in a fluidised state.

La présente invention concerne un procédé chromatographique liquide qui se déroule partiellement dans un lit fluidisé contenu dans un récipient et renfermant des particules fluidisées par un courant liquide ascendant. Ce processus passe par les opérations suivantes : (a) capture au cours de laquelle un ou plusieurs composés d'un échantillon sont capturés par les particules; et (b) opération de lavage ou de libération au cours de laquelle les particules se présentent sous la forme d'un lit fluidisé traversé par un courant liquide. Ce procédé se caractérise en ce que le liquide (liquide n DEG 1) utilisé pour l'opération de lavage ou de libération (opération n DEG 1) est suivi immédiatement d'un autre liquide (liquide n DEG 2, opération n DEG 2) dont la densité est supérieure à celle du liquide n DEG 1, et que le lit est maintenu dans un état fluidisé.

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