Process for producing a pulp

Details Process for producing a pulp Process for producing a pulp

D - Textiles, Paper

21

C

D21C 9/00 (2006.01)

Patent

CA 2651025

The invention relates to a method for producing a chemical conversion pulp from a cellulose starting material by kraft pulping, comprising the step of cooking the starting material with a cooking liquor. The method according to the invention is characterized by exposing the starting material to a steam treatment prior to cooking and by subjecting the pulp obtained by cooking to cold caustic extraction (CCE) during its further processing.

L'invention concerne un procédé de fabrication d'une pâte chimique à partir d'une matière première cellulosique par le procédé kraft, lequel procédé comprend l'étape de cuisson de la matière première à l'aide d'une liqueur de cuisson. Le procédé selon l'invention se caractérise en ce que la matière première est soumise à un étuvage avant la cuisson et la pâte de cellulose obtenue par la cuisson est soumise à une extraction alcaline à froid (CCE) au cours d'un traitement ultérieur.

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