ATE338845T1 - METHOD AND PROCESS ARRANGEMENT IN THE SHORT CIRCUIT OF A PAPER MACHINE - Google Patents

METHOD AND PROCESS ARRANGEMENT IN THE SHORT CIRCUIT OF A PAPER MACHINE

Info

Publication number
ATE338845T1
ATE338845T1 AT02714251T AT02714251T ATE338845T1 AT E338845 T1 ATE338845 T1 AT E338845T1 AT 02714251 T AT02714251 T AT 02714251T AT 02714251 T AT02714251 T AT 02714251T AT E338845 T1 ATE338845 T1 AT E338845T1
Authority
AT
Austria
Prior art keywords
fan pump
pipeline
paper machine
dilution
flow
Prior art date
Application number
AT02714251T
Other languages
German (de)
Inventor
Matti Hietaniemi
Original Assignee
Metso Paper Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Metso Paper Inc filed Critical Metso Paper Inc
Application granted granted Critical
Publication of ATE338845T1 publication Critical patent/ATE338845T1/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water

Landscapes

  • Paper (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Abstract

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.
AT02714251T 2001-04-23 2002-04-12 METHOD AND PROCESS ARRANGEMENT IN THE SHORT CIRCUIT OF A PAPER MACHINE ATE338845T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20010830A FI111391B (en) 2001-04-23 2001-04-23 Process and process arrangement in the short circulation of a paper machine

Publications (1)

Publication Number Publication Date
ATE338845T1 true ATE338845T1 (en) 2006-09-15

Family

ID=8561032

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02714251T ATE338845T1 (en) 2001-04-23 2002-04-12 METHOD AND PROCESS ARRANGEMENT IN THE SHORT CIRCUIT OF A PAPER MACHINE

Country Status (7)

Country Link
US (1) US20040144513A1 (en)
EP (1) EP1399621B1 (en)
CN (1) CN1243880C (en)
AT (1) ATE338845T1 (en)
DE (1) DE60214546T2 (en)
FI (1) FI111391B (en)
WO (1) WO2002086233A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI113971B (en) * 2003-02-11 2004-07-15 Metso Paper Inc Stock treatment apparatus for treatment of stock passed to headbox of paper machine, comprises accept line of hydrocyclone plant and connected with stock line of stock fed from second stock chest
FI115234B (en) * 2003-09-24 2005-03-31 Metso Paper Inc A process for making a laminated paper or board web
DE102004054236B4 (en) * 2004-11-10 2007-06-06 Voith Patent Gmbh Method for mixing suspensions of different compositions
FI123392B (en) * 2008-02-22 2013-03-28 Upm Kymmene Oyj Method for Precipitation of Calcium Carbonate in a Fibrous Web Process and Fiber Machine Machine Approach
DE102010038694A1 (en) * 2010-07-30 2012-02-02 Voith Patent Gmbh constant part

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI103676B1 (en) * 1998-06-10 1999-08-13 Valmet Corp Process arrangement for the short circulation in a paper or tub machine
FI103677B (en) * 1998-06-10 1999-08-13 Valmet Corp Procedure for regulating the surface and texture of a dosing container for a partial mass
ATE262611T1 (en) * 1998-06-29 2004-04-15 Voith Paper Patent Gmbh METHOD AND DEVICE FOR MEASUREMENT OF FIBER SUSPENSIONS

Also Published As

Publication number Publication date
FI20010830A (en) 2002-10-24
EP1399621B1 (en) 2006-09-06
CN1503865A (en) 2004-06-09
WO2002086233A1 (en) 2002-10-31
DE60214546D1 (en) 2006-10-19
EP1399621A1 (en) 2004-03-24
CN1243880C (en) 2006-03-01
US20040144513A1 (en) 2004-07-29
FI20010830A0 (en) 2001-04-23
DE60214546T2 (en) 2007-08-30
FI111391B (en) 2003-07-15

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