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1. WO2020112003 - METHOD OF PRODUCING HOLOCELLULOSE AND PAPER STRENGTH AGENT, PROCESS FOR THE PRODUCTION OF PAPER, THE PAPER PRODUCED AND USE OF THE PRODUCED PAPER

Publication Number WO/2020/112003
Publication Date 04.06.2020
International Application No. PCT/SE2019/051164
International Filing Date 15.11.2019
IPC
D21C 3/00 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
3Pulping cellulose-containing materials
C08H 8/00 2010.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
HDERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
8Macromolecular compounds derived from lignocellulosic materials
C08L 1/02 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
1Compositions of cellulose, modified cellulose, or cellulose derivatives
02Cellulose; Modified cellulose
D21C 3/24 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
3Pulping cellulose-containing materials
22Other features of pulping processes
24Continuous processes
D21C 3/26 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
3Pulping cellulose-containing materials
22Other features of pulping processes
26Multi-stage processes
D21C 9/00 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
9After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters
CPC
C08H 8/00
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
HDERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
8Macromolecular compounds derived from lignocellulosic materials
C08L 1/02
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
1Compositions of cellulose, modified cellulose or cellulose derivatives
02Cellulose; Modified cellulose
D21C 3/00
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
3Pulping cellulose-containing materials
D21C 3/24
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
3Pulping cellulose-containing materials
22Other features of pulping processes
24Continuous processes
D21C 3/26
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
3Pulping cellulose-containing materials
22Other features of pulping processes
26Multistage processes
D21C 9/00
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
9After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
Applicants
  • RISE INNVENTIA AB [SE]/[SE]
  • RISE RESEARCH INSTITUTES OF SWEDEN AB [SE]/[SE]
Inventors
  • KROCHAK, Paul
  • JOHANSSON, Klas
  • BERTHOLD, Jesper
  • BERTHOLD, Fredrik
  • DE SAN PIO, Ignacio
  • ANKERFORS, Caroline
  • SJÖSTEDT, Anna
  • MUELLER, Bettina
  • DEDIC, DIna
  • JOHANSSON SALAZAR-SANDOVAL, Eric
  • TÖNNERFORS, Erika
  • POUYET, Frédéric
  • PRESTJAN, Katarina
  • SLETTENGREN, Kerstin
  • KALLONEN, Laura
  • KUBAT, Mikaela
  • LOPES, Marta
Agents
  • ZACCO SWEDEN AB
Priority Data
1851488-529.11.2018SE
1851489-329.11.2018SE
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD OF PRODUCING HOLOCELLULOSE AND PAPER STRENGTH AGENT, PROCESS FOR THE PRODUCTION OF PAPER, THE PAPER PRODUCED AND USE OF THE PRODUCED PAPER
(FR) PROCÉDÉ DE PRODUCTION D'HOLOCELLULOSE ET AGENT DE RÉSISTANCE POUR PAPIER, PROCÉDÉ DE PRODUCTION DE PAPIER, PAPIER PRODUIT ET UTILISATION DU PAPIER PRODUIT
Abstract
(EN)
The present invention relates to a method of producing holocellulose fibres by treating a wood-based raw material with an organic peroxide, wherein the method comprises charging the organic peroxide continuously to the wood-based raw material during the treatment and/or charging the organic peroxide to the wood-based raw material in at least two separate steps with an intermediate alkaline treatment step. Additionally, a process for the production of paper comprising the steps of preparing a papermaking stock comprising an aqueous pulp slurry comprising cellulosic fibres and having a fibre consistency of from 0.1 to 40 % by weight, wherein the cellulosic fibres comprise or consist of holocellulose fibres, and wherein the amount of the wood-based holocellulose fibres is from 0.5 to 100% by weight, based on the total weight of the stock; providing the stock to a wire and form a web; dewatering the web; and drying the web is claimed. By the method affordable way to produce holocellulose fibres usable in the process to provide paper with high strength is provided, while effective dewatering can be obtained during the manufacturing process.
(FR)
La présente invention concerne un procédé de production de fibres d'holocellulose par traitement d'une matière première à base de bois avec un peroxyde organique, le procédé consistant à charger le peroxyde organique en continu sur la matière première à base de bois pendant le traitement et/ou à charger le peroxyde organique sur la matière première à base de bois en au moins deux étapes séparées avec une étape de traitement alcalin intermédiaire. En outre, elle concerne un procédé de production de papier comprenant les étapes consistant à préparer une pâte de fabrication de papier comprenant une bouillie de pâte à papier aqueuse comprenant des fibres cellulosiques et ayant une consistance de fibre de 0,1 à 40 % en poids, les fibres cellulosiques comprenant ou étant constituées de fibres d'holocellulose, et la quantité des fibres d'holocellulose à base de bois étant de 0,5 à 100 % en poids, sur la base du poids total de la pâte ; à fournir la pâte à un fil et former une bande ; à déshydrater la bande ; et à sécher la bande. Par le procédé on obtient une manière abordable de produire des fibres d'holocellulose pouvant être utilisées dans le procédé pour fournir du papier avec une résistance élevée, tandis qu'une déshydratation efficace peut être obtenue pendant le processus de fabrication.
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