Process for bleaching chemical paper pulp

Details Process for bleaching chemical paper pulp Process for bleaching chemical paper pulp

D - Textiles, Paper

21

C

D21C 9/14 (2006.01) D21C 9/147 (2006.01)

Patent

CA 2246569

This invention concerns a process for bleaching chemical paper pulp whereby the pulp, after cooking and possible pre-bleaching, is subjected to at least one treatment involving chlorine dioxide in the presence of oxygen.

La présente invention concerne un procédé de blanchiment de pâtes à papier chimiques suivant lequel les pâtes, après cuisson et éventuellement préblanchiment, sont soumises à au moins un traitement au dioxyde de chlore en présence d'oxygène.

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