ATE407256T1 - METHOD AND DEVICE FOR MIXING SUSPENSIONS - Google Patents

METHOD AND DEVICE FOR MIXING SUSPENSIONS

Info

Publication number
ATE407256T1
ATE407256T1 AT05022328T AT05022328T ATE407256T1 AT E407256 T1 ATE407256 T1 AT E407256T1 AT 05022328 T AT05022328 T AT 05022328T AT 05022328 T AT05022328 T AT 05022328T AT E407256 T1 ATE407256 T1 AT E407256T1
Authority
AT
Austria
Prior art keywords
suspension
mixing
pump
dilution fluid
fed
Prior art date
Application number
AT05022328T
Other languages
German (de)
Inventor
Elisabeth Baeatz
Erwin Binder
Guenther Einetter
Axel Gommel
Reimund Rienecker
Original Assignee
Voith Patent Gmbh
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 Voith Patent Gmbh filed Critical Voith Patent Gmbh
Application granted granted Critical
Publication of ATE407256T1 publication Critical patent/ATE407256T1/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/02—Straining or screening the pulp
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30—Defibrating by other means
    • D21B1/34—Kneading or mixing; Pulpers
    • D21B1/342—Mixing apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

A watery dilution fluid (2), e.g. recycled papermaking water, is mixed with thicker fibrous suspension (1) arising as reject material (12) from suspension preparation. A closed mixer (4) is used. This has no mechanically-driven components to assist mixing. Its mixing tube includes at least two inlets and at least one outlet. The thick suspension (1) feed, flows more slowly into the watery dilution fluid. The latter enters at a velocity which is at least 5 m/s, preferably at least 10 m/s greater than the main flow velocity. After mixing-in the dilution fluid, the flow enters a straight cylindrical pipe section (6) with a length 5 times its diameter. The dilution fluid is fed along the axis of the pipe as a central driving jet, into the flow of thicker suspension. No pump is used to transfer the mixture into the next processing stage, which takes place in closed apparatus. The diluted suspension is fed to a pressurized screen (7, 8) without using a further pump. The thicker fibrous suspension is supplied to a cleaning plant (e.g. cyclones removing heavy contaminants) using a pulp suspension pump (9). It is fed for dilution into the mixing unit and thence to a further cleaning plant. In neither of these cases is a further pump used. An independent claim is included for the corresponding mixing equipment.
AT05022328T 2004-11-10 2005-10-13 METHOD AND DEVICE FOR MIXING SUSPENSIONS ATE407256T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004054236A DE102004054236B4 (en) 2004-11-10 2004-11-10 Method for mixing suspensions of different compositions

Publications (1)

Publication Number Publication Date
ATE407256T1 true ATE407256T1 (en) 2008-09-15

Family

ID=35782763

Family Applications (1)

Application Number Title Priority Date Filing Date
AT05022328T ATE407256T1 (en) 2004-11-10 2005-10-13 METHOD AND DEVICE FOR MIXING SUSPENSIONS

Country Status (5)

Country Link
EP (1) EP1657356B1 (en)
CN (1) CN1773012B (en)
AT (1) ATE407256T1 (en)
DE (2) DE102004054236B4 (en)
ES (1) ES2314537T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT15159U1 (en) * 2014-11-24 2017-01-15 Voith Patent Gmbh Approach flow sorting
EP3348691B1 (en) * 2015-09-11 2020-05-20 Seiko Epson Corporation Sheet production device and sheet production method
SE1650410A1 (en) * 2016-03-30 2017-10-01 Valmet Oy Screen feed arrangement

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1561697A1 (en) * 1967-04-15 1970-10-01 Voith Gmbh J M Process for the continuous dilution and / or mixing of long, spinning-prone fibers containing suspensions and apparatus for carrying out this process
US3839145A (en) * 1970-09-17 1974-10-01 K Bueckle Apparatus for and method of forming a fiber suspension and for delivering it to the wire of a machine for manufacturing non-woven materials
DE4125513A1 (en) * 1991-08-01 1993-02-04 Escher Wyss Gmbh Fibre suspension mixing - introduces thick suspension into centre of thin suspension flow at a faster speed with turbulence
FI104384B (en) * 1998-06-05 2000-01-14 Valmet Corp Plant and method for mixing wire water and fresh pulp in a channel after the wire well
DE19859770A1 (en) * 1998-06-29 1999-12-30 Voith Sulzer Papiertech Patent Method and device for mixing suspension of substances
ATE262611T1 (en) * 1998-06-29 2004-04-15 Voith Paper Patent Gmbh METHOD AND DEVICE FOR MEASUREMENT OF FIBER SUSPENSIONS
DE10050109A1 (en) * 2000-10-09 2002-04-11 Voith Paper Patent Gmbh Preparation of a fiber suspension, as paper/cardboard pulp, has a mixing pipe for the main mixed suspension flow with an elbow where an additional suspension is injected with a bulking agent
FI111391B (en) * 2001-04-23 2003-07-15 Metso Paper Inc Process and process arrangement in the short circulation of a paper machine

Also Published As

Publication number Publication date
ES2314537T3 (en) 2009-03-16
DE502005005250D1 (en) 2008-10-16
EP1657356B1 (en) 2008-09-03
CN1773012A (en) 2006-05-17
CN1773012B (en) 2012-01-18
DE102004054236A1 (en) 2006-05-18
EP1657356A1 (en) 2006-05-17
DE102004054236B4 (en) 2007-06-06

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