Process and plant to extract and concentrate tannins from...

Details Process and plant to extract and concentrate tannins from... Process and plant to extract and concentrate tannins from...

B - Operations, Transporting

01

D

B01D 11/02 (2006.01) C07G 99/00 (2009.01) B01D 61/02 (2006.01) B01D 61/14 (2006.01) B01D 63/10 (2006.01) B01D 71/68 (2006.01)

Patent

CA 2307628

Process and a plant to extract and concentrate tannins from wood and from other solid natural products containing it characterised in that the solid products are subjected to an extraction (1) by percolation with water and/or steam and the thus obtained tannin solution is subjected to nanofiltration (5).

L'invention concerne un procédé et une installation d'extraction et de concentration de tanins à partir de bois et d'autres produits solides naturels renfermant des tanins. Ledit procédé est caractérisé en ce que les produits solides sont extraits (1) par percolation avec de l'eau et/ou de la vapeur, la solution tannique ainsi obtenue étant soumise à une nanofiltration (5).

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