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1. WO2006037858 - A METHOD AND A DEVICE FOR PREPARING CELLULOSE PULP

Publication Number WO/2006/037858
Publication Date 13.04.2006
International Application No. PCT/FI2005/050343
International Filing Date 03.10.2005
Chapter 2 Demand Filed 28.04.2006
IPC
D21C 1/06 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
1Pretreatment of the finely-divided materials before digesting
06with alkaline reacting compounds
CPC
D21C 1/00
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
1Pretreatment of the finely-divided materials before digesting
D21C 1/06
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
1Pretreatment of the finely-divided materials before digesting
06with alkaline reacting compounds
D21C 11/0021
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 ; or effluent waste waters
0021Introduction of various effluents, e.g. waste waters, into the pulping, recovery and regeneration cycle (closed-cycle)
D21C 11/10
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 ; or effluent waste waters
10Concentrating spent liquor by evaporation
Applicants
  • METSO PAPER, INC. [FI]/[FI] (AllExceptUS)
  • HERNESNIEMI, Lasse [FI]/[FI] (UsOnly)
  • LAMPINEN, Rami [FI]/[FI] (UsOnly)
  • TUOMINEN, Antti [FI]/[FI] (UsOnly)
  • NYKÄNEN, Tuomo [FI]/[US] (UsOnly)
Inventors
  • HERNESNIEMI, Lasse
  • LAMPINEN, Rami
  • TUOMINEN, Antti
  • NYKÄNEN, Tuomo
Agents
  • TAMPEREEN PATENTTITOIMISTO OY
Priority Data
2004128804.10.2004FI
2005528906.06.2005FI
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A METHOD AND A DEVICE FOR PREPARING CELLULOSE PULP
(FR) PROCEDE ET DISPOSITIF DE PREPARATION D'UNE PATE A PAPIER
Abstract
(EN)
A method and an apparatus for preparing cellulose pulp, in which a lignin-containing raw material is impregnated with impregnation liquor and the impregnated raw material is cooked. The black liquor obtained by cooking is concentrated in an evaporation plant (17) integrated in a chemical recovery plant. In the impregnation, the lignin-containing raw material is impregnated with a circulating alkaline impregnating liquor, which impregnating liquor is concentrated by evaporating water from it in at least one evaporator unit (17c) of the evaporation plant (17) arranged in the chemical recovery plant of a pulp mill.
(FR)
L'invention concerne un procédé et un appareil de préparation de pâte à papier. Une matière première contenant de la lignine est imprégnée d'une liqueur d'imprégnation et la matière première imprégnée est cuite. La liqueur résiduaire obtenue par la cuisson est concentrée dans une installation d'évaporation (17) intégrée dans une installation de récupération chimique. Lors de l'imprégnation, la matière première contenant de la lignine est imprégnée d'une liqueur d'imprégnation alcaline circulante. Cette liqueur d'imprégnation est concentrée par évaporation de l'eau qu'elle contient, dans au moins une unité d'évaporation (17c) de l'installation d'évaporation (17) placée dans l'installation de récupération chimique d'une usine de pâte.
Also published as
Latest bibliographic data on file with the International Bureau