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METHOD FOR PREPARING A CELLULOSE PULP
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Title:
METHOD FOR PREPARING A CELLULOSE PULP
Author:
FRANCOIS, Sébastien
;
SAISON, Marjorie
Subjects:
APPARATUS THEREFOR
;
IMPREGNATING OR COATING OF PAPER
;
PAPER NOT OTHERWISE PROVIDED FOR
;
PAPER-MAKING
;
PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D
;
PRODUCTION OF CELLULOSE
;
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS
;
PULP COMPOSITIONS
;
REGENERATION OF PULPING LIQUORS
;
TEXTILES
;
TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
Description:
The invention relates to a method for preparing cellulose pulp from textile waste comprising cellulose fibres in a mass proportion of more than 50%. The method comprises shredding the textile waste to obtain a first mixture of shredded fibres and residues, separating at least part of the non-cellulosic components from the first mixture to obtain a second mixture having a larger mass proportion of cellulose fibres than the mass proportion of cellulose fibres in the first mixture, filtering the second mixture in order to recover a solid phase comprising the cellulose fibres, dissolving the cellulose fibres from the solid phase to obtain a cellulose pulp comprising undissolved particles, and filtering the cellulose pulp in order to obtain a cellulose pulp separated from the undissolved particles. L'invention concerne un procédé de préparation de pâte de cellulose à partir de déchets textiles comprenant des fibres de cellulose dans une proportion massique supérieure à 50 %. Le procédé comprend le broyage des déchets textiles afin d'obtenir un premier mélange de fibres et de résidus broyés, la séparation d'au moins une partie des composants non-cellulosiques du premier mélange afin d'obtenir un deuxième mélange dont la proportion massique de fibres de cellulose est supérieure à la proportion massique de fibres de cellulose du premier mélange, la filtration du deuxième mélange afin de récupérer une phase solide comprenant les fibres de cellulose, la dissolution des fibres de cellulose de la phase solide pour obtenir une pâte de cellulose comprenant des particules non dissoutes et la filtration de la pâte de cellulose afin d'obtenir une pâte de cellulose séparée des particules non dissoutes.
Creation Date:
2023
Language:
English;French
Source:
esp@cenet
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