Process for producing pulp with a mixture of formic acid and...

Details Process for producing pulp with a mixture of formic acid and... Process for producing pulp with a mixture of formic acid and...

D - Textiles, Paper

21

C

D21C 3/04 (2006.01) D21C 3/00 (2006.01) D21C 3/20 (2006.01)

Patent

CA 2331089

The invention relates to a process based on formic acid cooking for producing pulp from herbaceous plants and deciduous trees by using acetic acid as an additional cooking chemical. The obtained pulp can be used in fine paper and board production as short-fibred material, for instance. The invention also relates to a process for adjusting the hemicellulose content of the pulp in connection with the formic acid cooking by using acetic acid as an additional cooking chemical.

L'invention concerne un procédé basé sur la cuisson à l'acide formique, permettant de produire de la pâte à partir de plantes herbacées et d'arbres à feuilles caduques grâce à l'utilisation d'acide acétique en tant que produit chimique de cuisson supplémentaire. La pâte ainsi obtenue peut servir, notamment, de matière à fibres courtes dans la production de papier et de carton fins. L'invention concerne également un procédé lié à la cuisson à l'acide formique, permettant de réguler la teneur en hémicellulose de la pâte grâce à l'utilisation d'acide acétique en tant que produit chimique de cuisson supplémentaire.

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