EP 3947807 A4 20230104 - A METHOD AND ARRANGEMENT IN A BATCH PULP PRODUCTION PROCESS
Title (en)
A METHOD AND ARRANGEMENT IN A BATCH PULP PRODUCTION PROCESS
Title (de)
VERFAHREN UND ANORDNUNG IN EINEM CHARGENZELLSTOFFHERSTELLUNGSVERFAHREN
Title (fr)
PROCÉDÉ ET AGENCEMENT DANS UN PROCÉDÉ DE PRODUCTION DE PÂTE PAR LOTS
Publication
Application
Priority
- SE 1950405 A 20190402
- SE 2020050253 W 20200309
Abstract (en)
[origin: WO2020204780A1] A method for extracting hydrolysate in a batch cooking process for producing pulp, a hydrolysate extracting arrangement and a batch cooking system.Said method comprising the steps of: -providing lignocellulose raw material to a batch cooking vessel; -performing acid hydrolysis of the lignocellulose raw material in the batch cooking vessel; -removing hydrolysate from the batch cooking vessel; and -cooling the removedhydrolysateon its way from the batch cooking vessel to a hydrolysate extracting tank to less than140 °C as soon as possible after removal from the batch cooking vessel, wherein cooling is performed within a time period of 0-2 minutes from when the hydrolysate is leaving the batch cooking vessel.
IPC 8 full level
D21C 1/02 (2006.01); D21C 1/04 (2006.01); D21C 3/02 (2006.01); D21C 9/00 (2006.01); D21C 11/00 (2006.01)
CPC (source: EP SE)
D21C 1/02 (2013.01 - EP SE); D21C 1/04 (2013.01 - EP SE); D21C 3/02 (2013.01 - EP); D21C 5/00 (2013.01 - EP); D21C 9/008 (2013.01 - EP); D21C 11/0007 (2013.01 - EP); C12P 2201/00 (2013.01 - SE)
Citation (search report)
- [XYI] EP 1984562 A1 20081029 - METSO PAPER INC [FI]
- [Y] WO 2017088061 A1 20170601 - IOGEN ENERGY CORP [CA]
- [Y] US 4668340 A 19870526 - SHERMAN MICHAEL I [US]
- [X] US 2003032819 A1 20030213 - LIGHTNER GENE E [US]
- [X] US 6176971 B1 20010123 - SUN YU ELLA [SG], et al
- See also references of WO 2020204780A1
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 2020204780 A1 20201008; BR 112021012894 A2 20211109; CN 113692464 A 20211123; CN 113692464 B 20220916; EP 3947807 A1 20220209; EP 3947807 A4 20230104; SE 1950405 A1 20201003; SE 543924 C2 20210928; ZA 202104455 B 20231129
DOCDB simple family (application)
SE 2020050253 W 20200309; BR 112021012894 A 20200309; CN 202080025317 A 20200309; EP 20782370 A 20200309; SE 1950405 A 20190402; ZA 202104455 A 20210628