Forced flow crystallisation apparatus

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 9/00 (2006.01) B01D 9/02 (2006.01)

Patent

CA 2692519

The invention relates to an apparatus for the crystallisation of a solute contained in a solution, that comprises: first (2) and second (1) chambers in communication for said solution, and a means (20) for maintaining therein a supersaturation condition; a first circuit for extracting from a calm area (15) of the last chamber a first flow of liquid with small crystals and for recycling said flow into the first chamber, and a second circuit for extracting from the second chamber a second flow of liquid with large crystals and feeding said second flow into the first chamber, the downstream end (26) of the first circuit giving into the second circuit so that the first and second flows of liquid are forced to flow in the same direction in said second circuit.

Appareil de cristallisation du soluté contenu dans une solution, comprenant : une première (2) et une deuxième (1) chambres communicantes, pour ladite solution, et des moyens (20) pour y maintenir un état de sursaturation, - un premier circuit pour extraire d'une zone calme (15) de la dernière chambre, un premier courant de liquide à petits cristaux et pour recycler ce courant dans la première chambre, et un deuxième circuit pour extraire de la deuxième chambre, un deuxième courant de liquide à gros cristaux, (26) du premier circuit débouchant dans le deuxième circuit de manière à ce que les premier et deuxième courants de liquide soient amenés à s'écouler dans le même sens dans ledit deuxième circuit.

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