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1. WO2022008791 - A HIGH YIELD COOKING METHOD

Publication Number WO/2022/008791
Publication Date 13.01.2022
International Application No. PCT/FI2021/050481
International Filing Date 23.06.2021
IPC
D21C 1/02 2006.1
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
1Pretreatment of the finely-divided materials before digesting
02with water or steam
D21C 3/04 2006.1
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
04with acids, acid salts, or acid anhydrides
D21C 3/06 2006.1
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
04with acids, acid salts, or acid anhydrides
06sulfur dioxide; sulfurous acid; bisulfites
D21C 11/00 2006.1
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
11Regeneration of pulp liquors
Applicants
  • AMPPC FINLAND OY [FI]/[FI]
Inventors
  • KURKI, Matti
Agents
  • ESPATENT OY
Priority Data
2020572506.07.2020FI
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) A HIGH YIELD COOKING METHOD
(FR) PROCÉDÉ DE CUISSON À HAUT RENDEMENT
Abstract
(EN) The present invention discloses a cooking method and a digester system whereinpartly digested cellulosic fiber source is compressed during cooking to provide highmolecular weight xylan, high molecular weight lignin and pulp.
(FR) La présente invention porte sur un procédé de cuisson et sur un système digesteur dans lesquels une source de fibre cellulosique partiellement digérée est comprimée pendant la cuisson pour produire du xylane, de la lignine et de la pâte de poids moléculaire élevé.
Latest bibliographic data on file with the International Bureau