EP 3673110 A1 20200701 - IMPROVED COMPACT PROCESS FOR PRODUCING PREHYDROLYZED PULP
Title (en)
IMPROVED COMPACT PROCESS FOR PRODUCING PREHYDROLYZED PULP
Title (de)
VERBESSERTES KOMPAKTES VERFAHREN ZUR HERSTELLUNG VON VORHYDROLYSIERTEM ZELLSTOFF
Title (fr)
PROCÉDÉ COMPACT AMÉLIORÉ POUR LA PRODUCTION D'UNE PÂTE PRÉHYDROLYSÉE
Publication
Application
Priority
- SE 1751023 A 20170825
- SE 2018050738 W 20180705
Abstract (en)
[origin: WO2019039982A1] The invention relates to a prehydrolysis-kraft process where the hydrolysate is withdrawn in a position where withdrawal capacity may be obtained over a longer operational period. According to the inventive process is the first volume of hydrolysate withdrawn from the process made after a moderate alkalization at end of hydrolysis (PR) and within a time period less than 10 minutes. Mechanical agitation and mixing effects in transfersystem (TR) prevents pitch deposits and clogging in top separator screen (31).
IPC 8 full level
D21C 1/02 (2006.01); D21C 1/04 (2006.01); D21C 3/24 (2006.01)
CPC (source: EP)
D21C 1/02 (2013.01); D21C 1/04 (2013.01); D21C 3/02 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2019039982 A1 20190228; BR 112020003285 A2 20200901; EP 3673110 A1 20200701; EP 3673110 A4 20210512
DOCDB simple family (application)
SE 2018050738 W 20180705; BR 112020003285 A 20180705; EP 18847479 A 20180705