Modified organosolv pulping

Details Modified organosolv pulping Modified organosolv pulping

D - Textiles, Paper

21

C

D21C 3/20 (2006.01) D21C 3/22 (2006.01)

Patent

CA 2221619

A method and apparatus for producing pulp (95) from fibrous plant materials (10). The method comprises the step of pulping (100) the fibrous material with a cooking solvent of a lower aliphatic alcohol and an additive mixture comprising at least one additive selective from the group consisting of sulfite salts, bisulfite salts and caustic.

La présente invention concerne un procédé et un équipement de production de pâte à papier (95) à partir de matières végétales fibreuses. Ce procédé comprend la transformation de ces matières en pâte à papier, au moyen d'un solvant en ébullition comprenant une solution aqueuse d'un alcool aliphatique inférieur et un mélange additionnel comprenant au moins un additif choisi dans le groupe que constituent les sulfites, les bisulfites et un caustique.

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