EP 1346103 A1 20030924 - METHOD FOR ALKALINE COOKING OF FIBER MATERIAL
Title (en)
METHOD FOR ALKALINE COOKING OF FIBER MATERIAL
Title (de)
VERFAHREN ZUR ALKALISCHEN KOCHUNG VON FASERMATERIAL
Title (fr)
PROCEDE DE CUISSON ALCALINE DE MATERIAUX FIBREUX
Publication
Application
Priority
- FI 0101009 W 20011121
- FI 20002587 A 20001124
Abstract (en)
[origin: WO0242550A1] A continuous, alkaline process for the production of pulp from wood chips, wherein the preheated chips are subjected to an extended impregnation step for at least 60 min, preferably longer, at a temperature not exceeding the impregnation liquor boiling point at atmospheric conditions, and a rapid heating and cooking period of less than 65 min, preferably shorter, followed by cooling to below reaction temperature. Fresh alkali is added both during impregnation and the heating/cooking period.
IPC 1-7
IPC 8 full level
D21C 1/06 (2006.01); D21C 3/24 (2006.01); D21C 3/26 (2006.01); D21C 7/00 (2006.01)
CPC (source: EP US)
D21C 1/06 (2013.01 - EP US); D21C 3/24 (2013.01 - EP US); D21C 3/26 (2013.01 - EP US); D21C 7/00 (2013.01 - EP US)
Citation (search report)
See references of WO 0242550A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0242550 A1 20020530; AU 2371402 A 20020603; EP 1346103 A1 20030924; FI 20002587 A0 20001124; FI 20002587 A 20020525; US 2004089430 A1 20040513
DOCDB simple family (application)
FI 0101009 W 20011121; AU 2371402 A 20011121; EP 01997586 A 20011121; FI 20002587 A 20001124; US 43265703 A 20031218