Pulping process

Details Pulping process Pulping process

D - Textiles, Paper

21

C

D21C 1/00 (2006.01) D21B 1/02 (2006.01) D21C 1/04 (2006.01)

Patent

CA 2399772

The present invention relates to a process for the removal of lignin from lignocellulose containing material comprising treating the lignocellulose containing material prior to a high-yield pulping process with a delignifying gas comprising gaseous compounds comprising at least one oxygen atom such as chlorine dioxide containing gas.

La présente invention concerne un procédé permettant d'enlever la lignine de lignocellulose contenant de la matière. Avant le procédé de réduction en pâte à haut rendement, on traite la lignocellulose contenant de la matière avec un gaz de délignification contenant des composés gazeux renfermant au moins un atome d'oxygène, tel qu'un gaz contenant du bioxyde de chlore.

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