Activated carbon treatment

B - Operations – Transporting – 01 – J

Patent

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B01J 20/20 (2006.01) B01J 20/34 (2006.01)

Patent

CA 2541251

The present invention relates to a process for purification of a compound using an activated carbon treatment. In the process according to the present invention several filter units containing activated carbon immobilized in a matrix are operating in series and in a counter current mode. After passing a suitable volume of feed, a filter unit from the first series of filter units is disconnected at a particular position number, and an additional filter unit is connected at another particular position number herewith obtaining a next series of filter units where over the passing of a next volume of feed is continued. This process overcomes the problem of loss of yield of the purified compound as occurs during conventional activated carbon treatment.

La présente invention concerne un procédé de purification d'un composé au moyen d'un traitement au carbone activé. Au cours du procédé de cette invention, plusieurs éléments filtrants contenant du carbone activé immobilisé dans une matrice fonctionnent en série et en mode de contre-courant. Après avoir laissé passer un volume approprié d'alimentation, un élément filtrant de la première série d'éléments filtrants est désaccouplé au niveau d'un numéro de position spécifique, et un élément filtrant supplémentaire est couplé à un autre numéro de position spécifique, ce qui permet d'obtenir une série suivante d'éléments filtrants, dans lesquels continue à s'effectuer le passage d'un volume suivant d'alimentation. Ce procédé permet de résoudre le problème de perte de rendement du composé purifié, tel que cela est le cas lors d'un traitement traditionnel au carbone activé.

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