EP 1399621 B1 20060906 - METHOD AND PROCESS ARRANGEMENT FOR THE SHORT CIRCULATION IN A PAPER MACHINE
Title (en)
METHOD AND PROCESS ARRANGEMENT FOR THE SHORT CIRCULATION IN A PAPER MACHINE
Title (de)
VERFAHREN UND PROZESSANORDNUNG IM KURZKREISLAUF EINER PAPIERMASCHINE
Title (fr)
ENSEMBLE DE PROCESSUS DE CIRCULATION COURTE D'UNE MACHINE A PAPIER
Publication
Application
Priority
- FI 0200311 W 20020412
- FI 20010830 A 20010423
Abstract (en)
[origin: WO02086233A1] A process arrangement in the short circulation of a paper machine comprises devices (10-13) for dilution of thick stock, centrifugal cleaners (14), and a headbox fan pump (16), as well as a pipe system connecting these. There is a direct flow connection from the centrifugal cleaners (14) along a pipeline (30) to the headbox fan pump (16), through which pipeline (30) a centrifugally cleaned stock flow (F6) is passed direct to the headbox fan pump (16) without any deaeration or dilution stages in between. A secondary line (32) is connected to the pipeline (30) for passing through it part of the centrifugally cleaned stock flow as a return flow (F7) back to the thick stock dilution devices (10-13). By this arrangement it can be ensured that the pressure on the suction side of the fan pump (16) remains substantially constant.
IPC 8 full level
CPC (source: EP US)
D21F 1/66 (2013.01 - EP US)
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 02086233 A1 20021031; AT E338845 T1 20060915; CN 1243880 C 20060301; CN 1503865 A 20040609; DE 60214546 D1 20061019; DE 60214546 T2 20070830; EP 1399621 A1 20040324; EP 1399621 B1 20060906; FI 111391 B 20030715; FI 20010830 A0 20010423; FI 20010830 A 20021024; US 2004144513 A1 20040729
DOCDB simple family (application)
FI 0200311 W 20020412; AT 02714251 T 20020412; CN 02808671 A 20020412; DE 60214546 T 20020412; EP 02714251 A 20020412; FI 20010830 A 20010423; US 47550404 A 20040309