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1. WO2006101449 - ARRANGEMENT FOR FEEDING A SLURRY OF CHIPS AND LIQUID

Publication Number WO/2006/101449
Publication Date 28.09.2006
International Application No. PCT/SE2006/050037
International Filing Date 21.03.2006
Chapter 2 Demand Filed 02.10.2006
IPC
D21C 7/06 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
7Digesters
06Feeding devices
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 7/08 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
7Digesters
08Discharge devices
CPC
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 7/06
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
7Digesters
06Feeding devices
D21C 7/08
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
7Digesters
08Discharge devices
Applicants
  • KVAERNER PULPING AB [SE]/[SE] (AllExceptUS)
  • SAETHERÅSEN, Jonas [SE]/[SE] (UsOnly)
  • SNEKKENES, Vidar [NO]/[SE] (UsOnly)
  • WILKE, Bo [SE]/[SE] (UsOnly)
  • GUSTAVSSON, Lennart [SE]/[SE] (UsOnly)
Inventors
  • SAETHERÅSEN, Jonas
  • SNEKKENES, Vidar
  • WILKE, Bo
  • GUSTAVSSON, Lennart
Agents
  • FURHEM, Hans
Priority Data
0500672-123.03.2005SE
Publication Language English (EN)
Filing Language Swedish (SV)
Designated States
Title
(EN) ARRANGEMENT FOR FEEDING A SLURRY OF CHIPS AND LIQUID
(FR) DISPOSITIF PERMETTANT D'APPORTER UNE SUSPENSION EPAISSE DE COPEAUX ET DE LIQUIDE
Abstract
(EN)
The invention concerns a method and an arrangement for the feed of a chips suspension from one vessel to a subsequent digester in a continuous cooking process for the production of chemical cellulose pulp, where the vessel (101) has an inlet (107) for the input of chips and an outlet (201 ) for the output of a chips suspension. The chips suspension in the vessel (101) has a first fluid/wood ratio established above a second fluid/wood ratio, where the second fluid/wood ratio is established at the bottom of the vessel. The second fluid/wood ratio is at least as great as, preferably greater than, the first fluid/wood ratio. The invention is characterised in that after the output of the chips suspension from the vessel (101) and before the chips suspension is placed under pressure for onwards transport to a subsequent digester, a frac¬ tion (Q2) of fluid is withdrawn from the chips suspension, whereby a third fluid/wood ratio is established in the chips suspension, which third fluid/wood ratio is lower than the second fluid/wood ratio.
(FR)
La présente invention concerne un procédé et un dispositif qui permettent d'apporter une suspension de copeaux d'une cuve à un digesteur subséquent, dans un processus de cuisson en continu utile pour produire de la pâte de cellulose chimique, ladite cuve (101) comportant une entrée (107) prévue pour introduire les copeaux et une sortie (201) prévue pour distribuer une suspension de copeaux. La suspension de copeaux se trouvant dans la cuve (101) présente un premier rapport fluide/bois établi au-dessus d'un deuxième rapport fluide/bois, ledit deuxième rapport fluide/bois étant établi au fond de la cuve. Le deuxième rapport fluide/bois est au moins aussi important que le premier rapport fluide/bois, et de préférence il est supérieur à ce dernier. Cette invention se caractérise en ce que, après la sortie de la suspension de copeaux de la cuve (101) et avant que ladite suspension de copeaux soit mise sous pression pour être transportée ensuite à un digesteur subséquent, une fraction (Q2) de fluide est soutirée de la suspension de copeaux, ce qui établit ainsi un troisième rapport fluide/bois pour la suspension de copeaux, ce troisième rapport fluide/bois étant inférieur au deuxième rapport fluide/bois.
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