Separation process

C - Chemistry – Metallurgy – 13 – B

Patent

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Details

C13B 20/16 (2011.01) B01D 61/00 (2006.01) B01D 61/02 (2006.01) C13K 13/00 (2006.01)

Patent

CA 2653685

The invention relates to an improved nanofiltration process for separating and recovering components, such as sug ars and sugar alcohols from multicomponent mixtures. The process of the invention is characterized by collecting the nanofiltration retentate/permeate in several fractions with different purity, optional recycling of at least one of the collected nanofiltration retentate/permeate fractions to the nanofiltration and recovering the desired component from the nanofiltration permeate/retentate fractions by dif ferent methods. In one embodiment of the invention, the process comprises a combination of nanofiltration and chromatography.

L'invention concerne un procédé de nanofiltration amélioré destiné à la séparation et à la récupération de composants, tels que des sucres et des alcools de sucre, à partir de mélanges à composants multiples. Ce procédé se caractérise par le fait qu'il consiste à collecter le rétentat/perméat de la nanofiltration sous forme de plusieurs fractions avec différentes puretés, à éventuellement recycler au moins une des fractions de rétentat/perméat de la nanofiltration et à récupérer le composant désiré des fractions de rétentat/perméat de nanofiltration par différentes méthodes. Dans un mode de réalisation de l'invention, le procédé comprend une nanofiltration et une chromatographie combinées.

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