Process for removing interfering substances in the...

Details Process for removing interfering substances in the... Process for removing interfering substances in the...

D - Textiles, Paper

21

C

D21C 1/04 (2006.01)

Patent

CA 2549834

The invention relates to a method for removing an extractive during the production of mechanical pulp, the method comprising a step for impregnating chopped ligno-cellulosic material intended for use in pulp production before mechanical defibration with a liquid containing a peracid at a maximum pH value of 7, the amount of peracid being 0.5-20 kg/ton of dry lignocellulosic material, indicated as 100 % peracid. The invention also relates to a method for producing mechanical pulp.

L'invention concerne un procédé d'élimination d'un produit d'extraction du bois au cours de la production de pâte mécanique, le procédé consistant à imprégner une matière ligno-cellulosique hachée, destinée à être utilisée dans la production de pâte avant défibrage mécanique, à l'aide d'un liquide contenant un peracide présentant une valeur de pH maximum de 7, la quantité de peracide étant comprise entre 0,5 et 20 kg/tonne de matière ligno-cellulosique sèche, cette quantité représentant du peracide à 100 %. L'invention concerne également un procédé de production de pâte mécanique.? ¿

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