Bleaching of bagasse pulps with alkali-oxygen

D - Textiles – Paper – 21 – C

Patent

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8/78.1

D21C 9/10 (2006.01)

Patent

CA 1164157

PRECIS Blanchiment des pulpes de la bagasse à l'oxygène- alcali qui est caractérisé par l'application du oxygène dans un milieu alcalin avec chauffage et pression, suivi d'un blanchiment multi-étapes composé d'une première étape choisie de chlorination, anhydride de chlore ou peroxide de hydrogène, une deuxième étape d'extraction alcaline et ensuite des étapes choisies de hypochlorite, anhydride de chlore ou peroxide de hydrogène, ordonnées indistinctement.

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