摘要:
The invention concerns a method for separating at least a constituent of a mixture in a set of looping chromatographic columns, the loop comprising at least a point for injecting a load, a point for drawing off the raffinate, a point for injecting an eluting agent and a point for drawing of the extract. The method consists in: determining between an injection point and a drawing off point or vice-versa a chromatographic zone and at the end of a specific time interval, the whole set of injection points and drawing off points are offset by the same number of columns or column sections and advantageously from one column or one column section in a specific direction defined with respect to that of the flow of the main fluid circulating through the loop. During said time interval, the offsetting of the different injection and drawing off points of at least one column or column section is carried out at different times such that the length of the zones defined by the different points varies. The invention is useful in particular for separating stereoisomers for pharmaceutical purposes.
摘要:
The object of the invention is a method for enriching by chromatography of one or more compounds of a mixture in at least one column using an eluent, characterized in that a liquid mobile phase containing dissolved gas is used as eluent. A further object of the invention in the use in preparative chromatography of an eluent composed of a liquid mobile phase containing a dissolved gas.
摘要:
The subject of the invention is separation on a solid support by multi-column sequential selective retention in order to separate a product of interest from a solution containing such a product of interest, by passing this solution over a fixed chromatographic resin bed comprising at least three zones, liquid flow means being placed between adjacent zones and between the last zone and the first zone, this process comprising several sequences, each sequence comprising at least one step chosen from an absorption step, a rinsing step and a desorption step, carried out either simultaneously or not, each following sequence is carried out by the displacement of the fronts in the zones towards the downstream end substantially of the same increment before the periodic displacement of the points of introduction and of withdrawal, characterized in that the process includes a sub-sequence without injection of the charge.
摘要:
The invention concerns a method for separating at least a constituent of a mixture in a set of looping chromatographic columns, the loop comprising at least a point for injecting a load, a point for drawing off the raffinate, a point for injecting an eluting agent and a point for drawing of the extract. The method consists in: determining between an injection point and a drawing off point or vice-versa a chromatographic zone and at the end of a specific time interval, the whole set of injection points and drawing off points are offset by the same number of columns or column sections and advantageously from one column or one column section in a specific direction defined with respect to that of the flow of the main fluid circulating through the loop. During said time interval, the offsetting of the different injection and drawing off points of at least one column or column section is carried out at different times such that the length of the zones defined by the different points varies. The invention is useful in particular for separating stereoisomers for pharmaceutical purposes.
摘要:
The subject of the invention is separation on a solid support by multi-column sequential selective retention in order to separate a product of interest from a solution containing such a product of interest, by passing this solution over a fixed chromatographic resin bed comprising at least three zones, liquid flow means being placed between adjacent zones and between the last zone and the first zone, this process comprising several sequences, each sequence comprising at least one step chosen from an absorption step, a rinsing step and a desorption step, carried out either simultaneously or not, each following sequence is carried out by the displacement of the fronts in the zones towards the downstream end substantially of the same increment before the periodic displacement of the points of introduction and of withdrawal, characterized in that the process includes a sub-sequence without injection of the charge.
摘要:
The invention concerns a method for multiple-column chromatographic separation producing at least two fractions, comprising the following steps: in output of the extract, zone I, or the raffinate zone, zone III: (i) drawing at least part of the output flow of said zone; (ii) concentrating said part; and (iii) re-injecting at least partly said concentrated part. The invention also concerns a device for implementing said method.
摘要:
The invention concerns a method for separating fractions of a mixture to be separated, in a device (1) comprising: several chromatography columns (21, 22, 23, ) mounted in series; an open separation loop comprising in input a point for injecting (6) eluent in one of the columns and in output a point for drawing (8) a fraction of the mixture. The method includes the following steps: batch injection of the mixture to be separated in the open separation loop (4); collecting at least two fractions; offsetting at least one column of the eluent injecting and fraction drawing points (6, 8) of the separation loop (4). The invention also concerns a device for separating fractions of a mixture to be separated.
摘要:
The invention concerns a method for multiple-column chromatographic separation producing at least two fractions, comprising the following steps: in output of the extract, zone I, or the raffinate zone, zone III: (i) drawing at least part of the output flow of said zone; (ii) concentrating said part; and (iii) re-injecting at least partly said concentrated part. The invention also concerns a device for implementing said method.