EP 1348802 A1 20031001 - Process and apparatus for dispersing a paper fibre slurry
Title (en)
Process and apparatus for dispersing a paper fibre slurry
Title (de)
Verfahren und Vorrichtung zur Dispergierung eines Papierfaserstoffes
Title (fr)
Procédé et appareil pour disperser une pulpe de fibres de papier
Publication
Application
Priority
AT 4802002 A 20020327
Abstract (en)
In a process to disperse a suspension of paper fibres in water, the pre-dewatered suspension is heated and fed to a dispersion assembly. The paper fibres are esp. heated immediately prior to their surrender to the dispersion zone. The paper fibres are mixed during the steam heating process. A vacuum is applied to the conveyer system. After steam has passed through the paper suspension, cooled steam is discharged. chemical additives are introduced to the paper fibres during the heating process. Also claimed is a commensurate helical mixer assembly (9) having a housing (12) with inlets for the fibre and steam and a vacuum connection (11).
Abstract (de)
Die Erfindung betrifft ein Verfahren zur Dispergierung eines Papierfaserstoffes, bei dem ein vorentwässerter Stoff aufgeheizt, gefördert und in einem Disperger dispergiert wird. Sie ist vornehmlich dadurch gekennzeichnet, dass der Papierfaserstoff unmittelbar vor Eintritt in die Dispergierzone aufgeheizt wird. Weiters betrifft die Erfindung eine Vorrichtung zur Durchführung des Verfahrens. <IMAGE>
IPC 1-7
IPC 8 full level
D21D 1/20 (2006.01); D21D 1/30 (2006.01); D21D 1/38 (2006.01); D21C 9/10 (2006.01)
CPC (source: EP US)
D21D 1/004 (2013.01 - EP US); D21D 1/20 (2013.01 - EP US); D21D 1/30 (2013.01 - EP US); D21D 1/38 (2013.01 - EP US); D21C 9/10 (2013.01 - EP US)
Citation (search report)
- [X] US 4909900 A 19900320 - MATZKE WOLFGANG [DE], et al
- [X] US 5176793 A 19930105 - KURTZ RUDOLF W [SE]
- [XD] EP 1096062 A1 20010502 - VOITH PAPER PATENT GMBH [DE]
- [X] WO 9804774 A1 19980205 - CELLWOOD MACHINERY AB [SE], et al
- [A] US 5958179 A 19990928 - GEHR VOLKER [DE], et al
- [A] DE 10102449 C1 20020321 - VOITH PAPER PATENT GMBH [DE]
- [A] US 2001037866 A1 20011108 - KRIEBEL ALMUT [DE], et al
- [A] WO 8705643 A1 19870924 - THUNE EUREKA AS [NO]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1348802 A1 20031001; EP 1348802 B1 20080910; AT 411604 B 20040325; AT A4802002 A 20030815; AT E408041 T1 20080915; CA 2421407 A1 20030927; CN 1306113 C 20070321; CN 1446976 A 20031008; DE 50310459 D1 20081023; MX PA03002619 A 20040212; NO 20031223 D0 20030317; NO 20031223 L 20030929; NO 330431 B1 20110411; US 2006108083 A1 20060525
DOCDB simple family (application)
EP 03005093 A 20030307; AT 03005093 T 20030307; AT 4802002 A 20020327; CA 2421407 A 20030310; CN 03108541 A 20030326; DE 50310459 T 20030307; MX PA03002619 A 20030326; NO 20031223 A 20030317; US 40061203 A 20030327