B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 9/00 (2006.01) A23L 1/30 (2006.01)
Patent
CA 2616423
This invention relates to a method and a device for purifying and/ or separating preferably high melting organic raw products or compound mixtures containing, in particular, high melting and/ or degradable sterols, by layer crystallisation on first heat exchanger surfaces. The raw product is received in a solvent or solvent mixture, and then brought into contact with heat exchanger surfaces. The desired product crystallises on the heat exchanger surfaces by slow cooling. Solvent evaporating during the crystallisation or sweating process is condensed and returned to the mixture.
L'invention porte sur des procédés et dispositifs de purification et/ou de séparation de préférence de produits ou mélanges de composés organiques bruts à haut point de fusion contenant en particulier des stérols à haut point de fusion et/ou dégradables, par cristallisation en couches fractionnée sur de premières surfaces d'un échangeur de chaleur. Le produit brut, placé dans un solvant ou un mélange de solvants, est mis en contact avec les surfaces de l'échangeur de chaleur où il cristallise en se refroidissant lentement. Le solvant s'évaporant pendant la cristallisation ou le processus de sudation se condense et retourne au mélange.
Kuszlik Andrzej
Nikzad Ali
Rohr Rodolfo
Fetherstonhaugh & Co.
Resitec Participacoes Ltda.
Sulzer Chemtech Ag
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