EP 3947808 A4 20221228 - A METHOD AND ARRANGEMENT IN A CONTINUOUS PULP PRODUCTION PROCESS
Title (en)
A METHOD AND ARRANGEMENT IN A CONTINUOUS PULP PRODUCTION PROCESS
Title (de)
VERFAHREN UND VORRICHTUNG IN EINEM KONTINUIERLICHEN ZELLSTOFFHERSTELLUNGSVERFAHREN
Title (fr)
PROCÉDÉ ET AGENCEMENT DANS UN PROCÉDÉ DE PRODUCTION DE PÂTE À PAPIER EN CONTINU
Publication
Application
Priority
- SE 1950386 A 20190329
- SE 2020050285 W 20200318
Abstract (en)
[origin: WO2020204783A1] A method and a hydrolysate extracting arrangement in a continuous cooking process for producing pulp, said method comprising the steps of: (e)cooling a content in a prehydrolysis vessel (5a; 5b; 5c; 5d) of a continuous pulp production system such that the content has been cooled down when the content arrives at a hydrolysis outlet (9) of the prehydrolysis vessel (5a; 5b; 5c; 5d) on its way from an inlet (13) provided in one end of the prehydrolysis vessel to an outlet (15) provided in an opposite end of the prehydrolysis vessel; (f)removing a hydrolysate of said content through the hydrolysate outlet (9) of the prehydrolysis vessel, wherein said content in the prehydrolysis vessel is cooled to such a degree that the removed hydrolysate has a temperature between 70°C and130°C.
IPC 8 full level
D21C 1/02 (2006.01); C12M 1/00 (2006.01); D21C 1/04 (2006.01); D21C 3/24 (2006.01); D21C 7/12 (2006.01); D21C 11/00 (2006.01)
CPC (source: EP SE)
D21C 1/00 (2013.01 - EP); D21C 1/02 (2013.01 - EP SE); D21C 1/04 (2013.01 - EP SE); D21C 3/00 (2013.01 - EP); D21C 3/24 (2013.01 - SE); D21C 7/00 (2013.01 - EP); D21C 7/08 (2013.01 - EP); D21C 7/12 (2013.01 - SE); D21C 11/0007 (2013.01 - EP); C12P 2201/00 (2013.01 - SE)
Citation (search report)
- [XA] US 3530034 A 19700922 - ERICKSON RUSSELL F
- [A] WO 2019009792 A1 20190110 - VALMET OY [SE]
- [A] WO 2016112203 A1 20160714 - ANDRITZ INC [US]
- [A] JP 2012000022 A 20120105 - TSUKISHIMA KIKAI CO
- See also references of WO 2020204783A1
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
DOCDB simple family (publication)
WO 2020204783 A1 20201008; BR 112021013052 A2 20211026; CN 113646481 A 20211112; CN 113646481 B 20221122; EP 3947808 A1 20220209; EP 3947808 A4 20221228; SE 1950386 A1 20200922; SE 542991 C2 20200922; ZA 202104457 B 20230125
DOCDB simple family (application)
SE 2020050285 W 20200318; BR 112021013052 A 20200318; CN 202080025300 A 20200318; EP 20782621 A 20200318; SE 1950386 A 20190329; ZA 202104457 A 20210628