EP1052327A1 - Circuit d' eau blanche et procédé de circulation de l' eau dans une machine à papier - Google Patents

Circuit d' eau blanche et procédé de circulation de l' eau dans une machine à papier Download PDF

Info

Publication number
EP1052327A1
EP1052327A1 EP00108222A EP00108222A EP1052327A1 EP 1052327 A1 EP1052327 A1 EP 1052327A1 EP 00108222 A EP00108222 A EP 00108222A EP 00108222 A EP00108222 A EP 00108222A EP 1052327 A1 EP1052327 A1 EP 1052327A1
Authority
EP
European Patent Office
Prior art keywords
white water
filler
pigment
water
application
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.)
Granted
Application number
EP00108222A
Other languages
German (de)
English (en)
Other versions
EP1052327B1 (fr
Inventor
Klaus Prechtel
Ingolf Cedra
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 Paper Patent GmbH
Voith Sulzer Papiertechnik 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 Paper Patent GmbH, Voith Sulzer Papiertechnik Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1052327A1 publication Critical patent/EP1052327A1/fr
Application granted granted Critical
Publication of EP1052327B1 publication Critical patent/EP1052327B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/24—Addition to the formed paper during paper manufacture
    • D21H23/26—Addition to the formed paper during paper manufacture by selecting point of addition or moisture content of the paper
    • D21H23/28—Addition before the dryer section, e.g. at the wet end or press section
    • 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

Definitions

  • the invention relates to a white water circuit of a paper machine, which at least one application device for applying a pigment and / or filler Mass on a not yet completely drained fiber web in the wet area has, which further with a first white water cycle, the one Headbox supplied with white water, and a second white water circuit, the forms the rest of the white water cycle. Furthermore, the Invention a method for water circulation of a paper machine with a Wet part, in which an emerging fiber web on at least one surface a pigment and / or filler-containing mass is applied and the forming fibrous web white water is withdrawn.
  • the white water I is part of the White water, which on modern paper machines on a forming roller, a Top suction box, a forming shoe or other suction elements, taking no account of any existing, upstream application is taken from filler or pigment.
  • This white water I is without treatment performed in a short cycle and for the dilution of the thick matter Machine chest used right before the headbox.
  • the amount of water on the wet vacuum cleaners, flat vacuum cleaners and suction screen rollers are typically recorded as white water II.
  • the clear water will then used for spray pipes and the like.
  • the inventors have thus recognized that it is to solve the above Problem is the white water cycle of a paper machine and that Process for water circulation of the paper machine so that the Water cycle, which includes the headbox of the paper machine, is fed exclusively from dewatering units, which the fiber web dewater at a stage where pigment and / or filler-containing mass on the fiber web in the process of formation has been applied.
  • Each drainage element which in the Following the application of the filler or pigments of the web moisture withdrawn, is consequently enriched with high pigment or filler proportions, so that this water leads to a steady increase in the filler content would lead the headbox formed layer.
  • the collection devices of cleaning liquid also count the sieves that come in with the pigment and / or filler application Have come into contact because they also have an increased filler or Pigment content are contaminated.
  • the inventors therefore propose a white water cycle a paper machine which has at least one application device for application a mass containing pigment and / or filler on a not yet completely dewatered Has fiber web in the wet area, which continues with a first White water cycle, which supplies a headbox with white water, and continues with a second white water circuit, which absorbs the rest of the white water, is equipped to further develop such that the first white water cycle is fed exclusively by drainage elements, which in the Manufacturing process before the application of the pigment and / or filler Mass are arranged.
  • An advantageous embodiment of this white water cycle can be that part of the white water of the second white water circuit for feeding the application of the pigment and / or filler-containing mass is used. Since the invention second white water cycle at least mainly of aggregates is fed that emit water with a high pigment and / or filler content, this cycle is particularly well suited to the water cycle for the applicator or applicators of the pigment- or filler-containing mass serve.
  • the rest not to feed the application the white water of the second serving the pigment- and / or filler-containing mass White water cycle with a Entstoffungsvorraum, preferably one Microflotation device that is processed to clear filtrate.
  • This so created Clear filtrate from the second white water cycle can be used later in the manufacturing process the paper web can be used anywhere.
  • the presence of a de-emptying device, preferably a microflotation device is particularly advantageous if the white water of the second white water circuit is provided with binder, in particular starch, since this binder is then removed from the white water by the de-emptying device discharged and thus an accumulation of binder in the middle Fiber layer of the finished paper can be avoided.
  • a microflotation device is present and possibly a disk thickener
  • the part of the white water, which the application of the pigment and / or filler-containing mass supplied is, from the flotate of the microflotation device and / or from the overflow of the disk thickener is removed. This ensures that each the proportion of white water containing pigment and / or filler for application is supplied, which is provided with a higher pigment and / or filler content is and thus to a maximum possible return to pigment or Filler leads.
  • the inventors propose a method for water circulation Paper machine with a wet part, in which an emerging fiber web at least one surface applied a pigment and / or filler-containing mass and white water is removed from the fibrous web that forms further develop that only the white water, which is not with pigments and / or fillers from the pigment and / or filler application is fed to the headbox.
  • An advantageous embodiment of the method provides that only white water, which with pigments and / or fillers from the pigment and / or Filler application is loaded, the application of the pigment and / or filler Mass is supplied.
  • a degassing device preferably a microflotation device
  • clear filtrate can be returned at any point on the paper machine. If binders are present in the white water of the second white water circuit, the above statements apply.
  • Another advantageous embodiment of the method provides that the white water, which the application of the pigment and / or filler-containing mass is supplied, from the overflow of the microflotation device and / or if necessary existing disk thickener is removed.
  • This configuration of the procedure has the effect that only the substantial part of the White water is fed into the return line to the application, and thus the amount of the necessary new pigment and / or filler can be reduced.
  • FIG. 1 shows a white water circuit according to the invention of a paper machine in a schematic representation. From the paper machine is essentially the sheet formation section 2 with the upstream headbox 1 and the press section 3 indicated below. The white water rivers are drawn as arrows.
  • the illustration shows a hybrid former, with a headbox 1, its Stock suspension coming from stock preparation 14 onto first screen 10.1 gives up.
  • a first dewatering unit 2.1 is provided, which introduces the collected white water into a white water tank 4.
  • a second sieve 10.2 which from above onto the suspension layer is launched.
  • another drainage element 2.2 the top of the screen, whose removed white water is also in the white water tank 4 is supplied.
  • a further suction roller 12 is attached again causes dewatering of the fiber web and the removed, with White water loaded with pigment and filler.
  • white water II which consists of the drainage units 2.3, 2.4, 2.5 and 12 is taken, collected and together to a disc thickener 6 passed and thus kept away from the screen circuit of the headbox 1.
  • the cleaning water which is in a drip pan 2.6 is collected, fed to the white water I and the disc thickener because there is a high proportion of pigments and fillers in this cleaning water is included.
  • the disc thickener 6 gives its thin material via line 16 to one Microflotation device 7 and its thick matter via line 15 to one White water tank 5, which also contains the flotate from the microflotation device 7 is conducted via line 17.
  • the Pigment and filler preparation 8 with a high pigment and filler content Water fed, in which also the necessary amount of fresh pigment and Filling material is fed via the feed 8.1.
  • the pigment and filler preparation 8 then gives the finished pigment and Filler slurry on to applicators 11.1 and 11.2, where they focus on the resulting Fiber web is applied.
  • the clear filtrate which is obtained from microflotation 7, is discharged via line 18 in a clear filtrate container 9 is stored and faces the papermaking process again as clear water to be used at any point.
  • the white water cycle of a paper machine shown above and the method of water circulation in a paper machine achieved that enrichment even when the paper machine is in operation for a long time the inner layer of the paper produced with filler and / or pigment is avoided.

Landscapes

  • Paper (AREA)
EP00108222A 1999-05-14 2000-04-14 Circuit d' eau blanche et procédé de circulation de l' eau dans une machine à papier Expired - Lifetime EP1052327B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19922391A DE19922391A1 (de) 1999-05-14 1999-05-14 Siebwasserkreislauf und Verfahren zur Wasserzirkulation einer Papiermaschine
DE19922391 1999-05-14

Publications (2)

Publication Number Publication Date
EP1052327A1 true EP1052327A1 (fr) 2000-11-15
EP1052327B1 EP1052327B1 (fr) 2004-07-21

Family

ID=7908161

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00108222A Expired - Lifetime EP1052327B1 (fr) 1999-05-14 2000-04-14 Circuit d' eau blanche et procédé de circulation de l' eau dans une machine à papier

Country Status (4)

Country Link
US (1) US6497788B1 (fr)
EP (1) EP1052327B1 (fr)
AT (1) ATE271627T1 (fr)
DE (2) DE19922391A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8715466B1 (en) 2012-10-19 2014-05-06 Theodore Caouette Method and system for reducing water loss in a paper mill
CN106758476B (zh) * 2017-03-21 2018-03-09 李飞 一种制浆造纸白水的封闭循环系统及处理方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1341327A (fr) * 1962-12-18 1963-10-25 Borax Cons Ltd Perfectionnements apportés aux propriétés d'incombustibilité du carton isolant par introduction d'une solution d'un composé ignifuge dans le carton pendant qu'il est à l'état humide
DE3406808A1 (de) * 1984-02-24 1985-09-12 Steinbeis Papier GmbH, 7121 Gemmrigheim Verfahren zur applikation von hilfs- oder veredelungsmitteln sowie farbstoffen auf der papiermaschine, vorrichtung zur durchfuehrung desselben sowie anwendungsverfahren
WO1991010500A1 (fr) * 1990-01-19 1991-07-25 Yit-Yhtymä Oy Procede de recuperation de residus de pate de couchage
WO1993023612A1 (fr) * 1992-05-19 1993-11-25 Pom Technology Oy Ab Procede et appareil de circulation des eaux de refoulement dans une machine a papier

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1950351A (en) * 1931-08-07 1934-03-06 Mead Corp Paper manufacture
US5152872A (en) * 1990-10-15 1992-10-06 Stone-Consolidated Inc. Apparatus for the wet end coating of paper
DE4401761C2 (de) * 1994-01-22 1997-04-24 Voith Gmbh J M Verfahren und Vorrichtung zur Verbesserung der Papierqualität von Mehrschicht- und Mehrlagenpapieren

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1341327A (fr) * 1962-12-18 1963-10-25 Borax Cons Ltd Perfectionnements apportés aux propriétés d'incombustibilité du carton isolant par introduction d'une solution d'un composé ignifuge dans le carton pendant qu'il est à l'état humide
DE3406808A1 (de) * 1984-02-24 1985-09-12 Steinbeis Papier GmbH, 7121 Gemmrigheim Verfahren zur applikation von hilfs- oder veredelungsmitteln sowie farbstoffen auf der papiermaschine, vorrichtung zur durchfuehrung desselben sowie anwendungsverfahren
WO1991010500A1 (fr) * 1990-01-19 1991-07-25 Yit-Yhtymä Oy Procede de recuperation de residus de pate de couchage
WO1993023612A1 (fr) * 1992-05-19 1993-11-25 Pom Technology Oy Ab Procede et appareil de circulation des eaux de refoulement dans une machine a papier

Also Published As

Publication number Publication date
US6497788B1 (en) 2002-12-24
DE50007102D1 (de) 2004-08-26
ATE271627T1 (de) 2004-08-15
DE19922391A1 (de) 2000-11-16
EP1052327B1 (fr) 2004-07-21

Similar Documents

Publication Publication Date Title
DE3720618A1 (de) Verfahren im papierherstellungsprozess zur verbesserung der papiereigenschaften, speziell der retention
DE3244142C2 (fr)
EP1314817A1 (fr) Procédé et machine pour fabriquer une bande fibreuse
AT501932B1 (de) Verfahren zum wiederaufbereiten von altpapier
DE2250421A1 (de) Verfahren zur herstellung von papier oder dergleichen und anlage zur durchfuehrung des verfahrens
DE4401761C2 (de) Verfahren und Vorrichtung zur Verbesserung der Papierqualität von Mehrschicht- und Mehrlagenpapieren
EP1205599A2 (fr) Machine pour la fabrication d'une bande fibreuse
DE19526205A1 (de) Verfahren und Anlage zur Herstellung einer mehrlagigen Papier- oder Kartonbahn
DE10393420B4 (de) Verfahren zum Herstellen von Tapetenpapier
EP1052327B1 (fr) Circuit d' eau blanche et procédé de circulation de l' eau dans une machine à papier
DE4239647A1 (de) Verfahren und Vorrichtung zur Vergleichmäßigung des Flächengewichtsquerprofils mittels Siebkreislaufsektionierung
DE3120073A1 (de) Doppelsiebpapiermaschine
DE10132743A1 (de) Verfahren zur Aufteilung eines aus mehreren Papiersorten bestehenden Rohstoffes in mindestens zwei Papierfraktionen
DE4031310C2 (de) Verfahren zur Erzeugung von mindestens zwei Sorten wässriger Stoffsuspensionen
DE112004001766T5 (de) Verfahren zur Herstellung einer schichtförmigen Papier- oder Kartonbahn
AT397213B (de) Verfahren und anlage zur rückgewinnung von feststoffen
DE102006034186A1 (de) Einrichtung zur Papierherstellung, insbesondere Altpapier
EP1063347B1 (fr) Procédé pour la dilution dosée d'une suspension fibreuse dans ou avant la caisse de tête d'une machine à papier
AT522849B1 (de) Verfahren und system zum sieben einer beschichtungsmischung in einer faserbahnmaschine
DE3238946C2 (de) Verfahren zum Herstellen von mehrschichtigen Papier- oder Kartonbahnen auf Rundsiebformern
DE60022786T2 (de) Verfahren zum entwässern von niedrigkonsistenten fasersuspensionen
DE2262966C3 (de) Papiermaschine
DE10134233A1 (de) Verfahren zum Betreiben einer der Herstellung einer Faserstoffbahn dienenden Maschine sowie Maschine zur Herstellung einer Faserstoffbahn
DE19823738A1 (de) Dampfapplikator
EP1437444B1 (fr) Procédé pour la fabrication et/ou le traitement d'une bande de matiere

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT DE FI SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VOITH PAPER PATENT GMBH

17P Request for examination filed

Effective date: 20010515

AKX Designation fees paid

Free format text: AT DE FI SE

17Q First examination report despatched

Effective date: 20030425

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE FI SE

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REF Corresponds to:

Ref document number: 50007102

Country of ref document: DE

Date of ref document: 20040826

Kind code of ref document: P

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20050422

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20110421

Year of fee payment: 12

Ref country code: SE

Payment date: 20110414

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FI

Payment date: 20110414

Year of fee payment: 12

Ref country code: AT

Payment date: 20110414

Year of fee payment: 12

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 271627

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120414

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120414

Ref country code: FI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120414

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50007102

Country of ref document: DE

Effective date: 20121101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120415

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121101