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WO2012013407A1 - Dispositif d'amenée du flux de pâte d'une machine de production d'une bande de matière fibreuse - Google Patents

Dispositif d'amenée du flux de pâte d'une machine de production d'une bande de matière fibreuse Download PDF

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Publication number
WO2012013407A1
WO2012013407A1 PCT/EP2011/059668 EP2011059668W WO2012013407A1 WO 2012013407 A1 WO2012013407 A1 WO 2012013407A1 EP 2011059668 W EP2011059668 W EP 2011059668W WO 2012013407 A1 WO2012013407 A1 WO 2012013407A1
Authority
WO
WIPO (PCT)
Prior art keywords
stream
consistency
cleaning
consistency stream
low
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/EP2011/059668
Other languages
German (de)
English (en)
Inventor
Günther Kriechbaum
Axel Erzler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
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
Priority to EP11724243.8A priority Critical patent/EP2598690B1/fr
Priority to CN201180037453.6A priority patent/CN103154362B/zh
Publication of WO2012013407A1 publication Critical patent/WO2012013407A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • 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
    • D21D5/26—De-aeration of paper stock
    • 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
    • D21F1/08—Regulating consistency

Definitions

  • the invention relates to a process for producing a pulp suspension for producing a paper, board, tissue or other fibrous web by mixing at least one high consistency stream formed from recycled fiber and filler with at least one, preferably fresh, white water or the like , formed low-consistency stream in a machine for producing the fibrous web, wherein the high-consistency stream is cleaned and mixed before and after this cleaning with at least a partial stream of the low-consistency stream.
  • the invention also relates to an arrangement for producing a pulp suspension for producing a paper, board, tissue or other fibrous web from at least one, made of recycled fiber and filler high-consistency stream and at least one, preferably fresh water, white water or the like.
  • formed low-consistency stream in the constant part of a machine for producing the fibrous web the high-consistency stream is passed through at least one cleaning device and diluted before and after this cleaning device in at least one mixing device with a partial stream of low consistency stream, in particular for carrying out the method.
  • the previously processed high-consistency accept is diluted with the collected in the paper machine white water, cleaned and degassed before it can be fed to the headbox of the paper machine.
  • Fresh water is used to an ever smaller extent usually only in the paper machine used.
  • the object of the invention is therefore to reduce the effort in the constant part with sufficient ventilation.
  • the object has been achieved in that the high-consistency stream is degassed for the first time and in particular once after a mixing following the purification with a partial stream of the low-consistency stream.
  • the high-consistency stream is passed through a degassing device for the first time and in particular once after a mixing device following the cleaning device.
  • the cleaning devices may consist of several stages. It is also possible that only one or more mixing devices are upstream and / or downstream of the cleaning device. In this case, it is deliberately dispensed with a degassing of the supplied after degassing of the high-consistency stream partial flow of the low-consistency stream. This is acceptable, since the vast majority of the headbox supplied amount of fluid is degassed. Even with a headbox with directly supplied dilution water, the degassed portion of the headbox total supplied amount of fluid is about 85 to 90%.
  • the maximum air content of less than 0.5% generally required for the headbox can be easily met.
  • the cleaning devices such as cleaners or sorters, are often designed for relatively high consistency streams without exploiting their potential. Therefore, the consistency of the high consistency stream should be immediately before cleaning between 1, 5 and 3.5%, preferably more than 2%.
  • degassing does not necessarily have to take place immediately after the cleaning, it is advantageous for degassing the largest possible portion of the pulp suspension if the high-consistency stream is degassed after the last cleaning following mixing with a partial flow of the low-consistency stream.
  • the consistency of the high-consistency stream immediately before degassing is between 1 and 1, 5%.
  • the low-consistency stream should therefore not be degassed or passed through any degassing device.
  • the high-consistency stream after the last mixing device should preferably be guided via a cleaning unit to the headbox.
  • This cleaning unit can also act degassing depending on the design.
  • the reject of at least one usually arranged immediately before the headbox cleaning unit of high-consistency or low-consistency stream is passed to another cleaning unit the Accept is preferably performed to degasification.
  • the high-consistency stream 1 is prepared in a manner known per se from fibrous materials and fillers in accordance with the specifications of the papermaker, i. combined in predetermined mixing ratios in a mixing chest and mixed.
  • the high consistency stream 1 has a consistency of 3-4% and an air content in the range of about 3%.
  • the high-consistency stream 1 is subsequently diluted several times, in this case specifically in two mixing devices 3, 4, with a partial stream of the low-consistency stream 2.
  • the finished pulp suspension for sheet formation is placed on or between the former screens of the following former via one or more nozzles.
  • the white water is collected and returned as a low consistency stream 2 in the constant part of the machine, so that as little fiber and fillers are lost and little fresh water is needed.
  • the entire white water used for dilution in the mixing devices 3,4 and directly at the headbox 10 is not degassed.
  • this After the first mixing device 3 for dilution of the high-consistency stream 1, this has a consistency of less than 3.5%, which allows the cleaning in a following cleaning device 5 in the form of a centrifugal separator.
  • the relatively high consistency reduces due to the low throughput investment costs for the cleaning device 5, but is not so high that the efficiency of the cleaning device 5 is too much affected.
  • the degassing device 6 Only then is the high-consistency stream 1 fed to a degassing device 6 in which the fluid is brought under reduced pressure to the boiling point and thus degassed. To compensate for throughput fluctuations, the degassing device 6 includes an overflow, the overflow stream is returned to the immediately preceding mixing device 4 and the high-consistency stream 1 is mixed. Thus, this at least partially degassed overflow current is not again performed by the cleaning device 4 contrary to the prior art, which relieves them.
  • the high-consistency stream 1 is passed to the headbox 10 for safety via an additional cleaning unit 7 in the form of a vertical sight with a built-in screen basket (pressure sorter). If, as indicated in the figure, a partial flow of white water is fed directly to the headbox 10, this is done via a cleaning unit 9 also in the form of a vertical seal with built-in screen basket (pressure sorter). With the help of the white water so the basis weight cross profile can be influenced at the headbox 10 in a known manner.
  • the reject of the two cleaning units 7, 9 in front of the headbox 10 is recirculated to increase the yield in a further purification unit 8 and its accept in the degassing device 6.
  • the high-consistency stream 1 is passed before the cleaning device 5, before the degassing device 6 and before the last cleaning unit 7 via a respective material pump 1 1, 12,13.
  • the number of required pumps is reduced by at least one.
  • the amount of low-consistency stream 2 (white water) fed via the cleaning unit 9 to the headbox 10 directly via a low-consistency pump 14 usually comprises 10 to 15% of the total quantity of fluid supplied to the headbox 10.
  • the white water usually has an air content of about 2% and the air content of 85% to 90% constituting high consistency stream 1 is less than 0.1%, can easily without degassing of the white water total air content of less than 0.5% Headbox 10 can be ensured.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Abstract

L'invention concerne un procédé ainsi qu'un dispositif pour la préparation d'une suspension de matière fibreuse en vue de la production d'une bande papier, de carton, de tissu ouaté ou d'une autre matière fibreuse, par mélange d'au moins un flux à haute consistance (1) formé de substance fibreuse finie et de charge avec au moins un flux à faible consistance (2) formé de préférence d'eau fraîche, d'eau blanche etc. dans une machine de production de la bande de matière fibreuse, le flux à haute consistance (1) étant purifié et mélangé, avant et après cette purification, avec au moins un flux partiel du flux à faible consistance (2). La complexité sera diminuée en ce que le flux à haute consistance (1) est dégazé une première fois après un mélange, en aval de la purification, avec un flux partiel du flux à faible consistance (2).
PCT/EP2011/059668 2010-07-30 2011-06-10 Dispositif d'amenée du flux de pâte d'une machine de production d'une bande de matière fibreuse Ceased WO2012013407A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP11724243.8A EP2598690B1 (fr) 2010-07-30 2011-06-10 Dispositif de regulation de consistance d'une machine de production d'une bande fibreuse
CN201180037453.6A CN103154362B (zh) 2010-07-30 2011-06-10 用于制备纤维幅的机器的进入系统

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010038694 DE102010038694A1 (de) 2010-07-30 2010-07-30 Konstantteil
DE102010038694.4 2010-07-30

Publications (1)

Publication Number Publication Date
WO2012013407A1 true WO2012013407A1 (fr) 2012-02-02

Family

ID=44263123

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/059668 Ceased WO2012013407A1 (fr) 2010-07-30 2011-06-10 Dispositif d'amenée du flux de pâte d'une machine de production d'une bande de matière fibreuse

Country Status (4)

Country Link
EP (1) EP2598690B1 (fr)
CN (1) CN103154362B (fr)
DE (1) DE102010038694A1 (fr)
WO (1) WO2012013407A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013206638A1 (de) * 2013-04-15 2014-10-30 Voith Patent Gmbh Drucksortierer-Rejektbehandlung
DE102013210004A1 (de) * 2013-05-29 2014-05-15 Voith Patent Gmbh Konstantteil
DE102013209998A1 (de) * 2013-05-29 2014-05-22 Voith Patent Gmbh Konstantteil-Mischvorrichtung
CN107447567A (zh) * 2017-09-30 2017-12-08 枣庄市恒宇纸业有限公司 一种造纸机械浆的处理装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5308384A (en) * 1991-10-16 1994-05-03 A. Ahlstrom Corporation Deaeration vessel
WO1999064668A1 (fr) * 1998-06-10 1999-12-16 Valmet Corporation Processus de la circulation courte d'une machine a papier ou a carton
WO2003023135A1 (fr) * 2001-09-07 2003-03-20 Metso Paper, Inc. Systeme de desaeration utilise en association avec une machine a papier ou autre machine equivalente
WO2004072365A1 (fr) 2003-02-11 2004-08-26 Metso Paper, Inc. Appareil et procede pour le traitement de la pate transferee jusqu'a une caisse d'arrivee d'une machine de fabrication du papier ou analogue
WO2005088007A1 (fr) * 2004-03-15 2005-09-22 Metso Paper, Inc. Procede pour surveiller et controler un processus de fabrication du papier
EP1645684A1 (fr) 2004-10-09 2006-04-12 Voith Paper Patent GmbH Procédé et dispositif pour réguler le profil transversal de grammage d'une bande fibreuse
DE102007038090A1 (de) * 2007-08-11 2009-02-12 Voith Patent Gmbh Konstantteil IV
DE102008061970A1 (de) * 2008-12-12 2010-06-17 Voith Patent Gmbh Konstantteil-Sortierung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1218587B1 (fr) * 1999-09-21 2006-06-21 Metso Paper, Inc. Systeme de reglage pour circulation courte et caisse d'arrivee d'alimentation d'une machine a papier ou similaire
FI115540B (fi) * 2000-12-29 2005-05-31 Metso Paper Inc Laitteisto massan johtamisessa paperikoneen tai vastaavan perälaatikkoon
FI115539B (fi) * 2001-02-23 2005-05-31 Metso Automation Oy Menetelmä ja järjestelmä paperikoneen tai vastaavan lyhyen kierron säädössä
FI111391B (fi) * 2001-04-23 2003-07-15 Metso Paper Inc Menetelmä ja prosessijärjestely paperikoneen lyhyessä kierrossa
DE102007038089A1 (de) * 2007-08-11 2009-02-12 Voith Patent Gmbh Konstantteil

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5308384A (en) * 1991-10-16 1994-05-03 A. Ahlstrom Corporation Deaeration vessel
WO1999064668A1 (fr) * 1998-06-10 1999-12-16 Valmet Corporation Processus de la circulation courte d'une machine a papier ou a carton
WO2003023135A1 (fr) * 2001-09-07 2003-03-20 Metso Paper, Inc. Systeme de desaeration utilise en association avec une machine a papier ou autre machine equivalente
WO2004072365A1 (fr) 2003-02-11 2004-08-26 Metso Paper, Inc. Appareil et procede pour le traitement de la pate transferee jusqu'a une caisse d'arrivee d'une machine de fabrication du papier ou analogue
WO2005088007A1 (fr) * 2004-03-15 2005-09-22 Metso Paper, Inc. Procede pour surveiller et controler un processus de fabrication du papier
EP1645684A1 (fr) 2004-10-09 2006-04-12 Voith Paper Patent GmbH Procédé et dispositif pour réguler le profil transversal de grammage d'une bande fibreuse
DE102007038090A1 (de) * 2007-08-11 2009-02-12 Voith Patent Gmbh Konstantteil IV
DE102008061970A1 (de) * 2008-12-12 2010-06-17 Voith Patent Gmbh Konstantteil-Sortierung

Also Published As

Publication number Publication date
CN103154362B (zh) 2015-10-21
DE102010038694A1 (de) 2012-02-02
EP2598690A1 (fr) 2013-06-05
CN103154362A (zh) 2013-06-12
EP2598690B1 (fr) 2014-04-23

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