Pulping process

Details Pulping process Pulping process

D - Textiles, Paper

21

C

D21C 3/22 (2006.01) D21C 3/26 (2006.01) D21C 9/10 (2006.01)

Patent

CA 2094819

A pulp preparation process in which pulp treatment is expanded to include in-digester treatments (Figures 7, 8, 9) previously performed outside of the digester (12) in discrete process equipment. Specifically, a manner for in-digester bleaching is disclosed, preferably using non-chlorine containing bleaching reagents.

Procédé de préparation de pâte de cellulose dans lequel le traitement de la pâte de cellulose est rallongé pour intégrer des traitements s'effectuant dans un lessiveur (Figures 7, 8, 9) alors qu'auparavant ils étaient réalisés à l'extérieur du lessiveur (12) d'un appareil de traitement en plusieurs étapes séparées. De manière plus spécifique, l'invention concerne le blanchiment effectué à l'intérieur du lessiveur, en utilisant de préférence des réactifs de blanchiment ne contenant pas de chlore.

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