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1. WO2020005130 - METHOD AND SYSTEM FOR CONTINUOUS DISCHARGE OF A PRESSURIZED REACTOR FOR HYDROTHERMAL TREATMENT OF LIGNOCELLULOSE MATERIALS

Publication Number WO/2020/005130
Publication Date 02.01.2020
International Application No. PCT/SE2019/050332
International Filing Date 10.04.2019
Chapter 2 Demand Filed 17.10.2019
IPC
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
B
FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
1
Fibrous raw materials or their mechanical treatment
04
by dividing raw materials into small particles, e.g. fibres
12
by wet methods, by the use of steam
30
Defibrating by other means
36
Explosive disintegration by sudden pressure reduction
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
C
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
7
Digesters
08
Discharge devices
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
3
Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
02
Feed or outlet devices therefor
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
C
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
1
Pretreatment of the finely-divided materials before digesting
02
with water or steam
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
C
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
1
Pretreatment of the finely-divided materials before digesting
04
with acid reacting compounds
D21B 1/36 (2006.01)
D21C 7/08 (2006.01)
B01J 3/02 (2006.01)
D21C 1/02 (2006.01)
D21C 1/04 (2006.01)
CPC
B01J 3/02
C12P 2201/00
D21B 1/36
D21C 1/02
D21C 1/04
D21C 7/08
Applicants
  • VALMET AB [SE/SE]; 85194 Sundsvall, SE
Inventors
  • MELANDER, Olof; SE
  • BJÖRKLUND, Peter; SE
Agents
  • GROTH & CO. KB; P.O. Box 6107 102 32 Stockholm, SE
Priority Data
1850793-926.06.2018SE
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND SYSTEM FOR CONTINUOUS DISCHARGE OF A PRESSURIZED REACTOR FOR HYDROTHERMAL TREATMENT OF LIGNOCELLULOSE MATERIALS
(FR) PROCÉDÉ ET SYSTÈME DE DÉCHARGE CONTINUE D'UN RÉACTEUR SOUS PRESSION POUR LE TRAITEMENT HYDROTHERMIQUE DE MATÉRIAUX LIGNOCELLULOSIQUES
Abstract
(EN)
A method for continuous steam explosion discharge of a pressurised reactor for thermal treatment of lignocellulose biomasses. The steam explosion discharge is complete decoupled from the thermal treatment step and the loss of steam from the process is fully controlled without jeopardizing the mechanical disintegration of the lignocellulose material from the process.
(FR)
L'invention concerne un procédé de décharge continue d'explosion de vapeur d'un réacteur sous pression pour le traitement thermique de biomasses lignocellulosiques. La décharge d'explosion de vapeur est entièrement découplée de l'étape de traitement thermique et la perte de vapeur provenant du processus est entièrement commandée sans compromettre la désintégration mécanique du matériau lignocellulosique du processus.
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