Method for sulfite pulping using surfactants

Details Method for sulfite pulping using surfactants Method for sulfite pulping using surfactants

D - Textiles, Paper

21

C

D21C 3/06 (2006.01) D21C 1/00 (2006.01) D21C 3/22 (2006.01)

Patent

CA 2217415

An improved method for acid sulfite pulping of wood chips in which wood chips are digested in an acid sulfite pulping liquor to produce a wood pulp is disclosed, which improvement includes adding to the chips, prior to mixing with the acid sulfite pulping liquor, a nonionic or anionic surfactant, or mixtures thereof.

Divulgation d'une méthode améliorée pour la production de pâte au sulfite acide, à partir de copeaux de bois, dans laquelle les copeaux sont digérés dans une lessive de cuisson au sulfite acide pour l'obtention de la pâte de bois; l'amélioration consiste à ajouter aux copeaux, avant de mélanger avec la lessive de cuisson au sulfite acide, un tensioactif anionique ou non ionique, ou un mélange de ces derniers.

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