EP1530103B1 - Procédé de frabrication d'une bande fibreuse - Google Patents

Procédé de frabrication d'une bande fibreuse Download PDF

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Publication number
EP1530103B1
EP1530103B1 EP04104803A EP04104803A EP1530103B1 EP 1530103 B1 EP1530103 B1 EP 1530103B1 EP 04104803 A EP04104803 A EP 04104803A EP 04104803 A EP04104803 A EP 04104803A EP 1530103 B1 EP1530103 B1 EP 1530103B1
Authority
EP
European Patent Office
Prior art keywords
model
filler
retention
ash
dependence
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.)
Expired - Lifetime
Application number
EP04104803A
Other languages
German (de)
English (en)
Other versions
EP1530103A1 (fr
Inventor
Niels Hardt
Michael Schwarz
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
Publication of EP1530103A1 publication Critical patent/EP1530103A1/fr
Application granted granted Critical
Publication of EP1530103B1 publication Critical patent/EP1530103B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0009—Paper-making control systems
    • D21G9/0018—Paper-making control systems controlling the stock preparation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S162/00—Paper making and fiber liberation
    • Y10S162/09—Uses for paper making sludge
    • Y10S162/10—Computer control of paper making variables
    • Y10S162/11—Wet end paper making variables

Definitions

  • the invention relates to a method for producing a fibrous web, in particular paper and / or board web, in which an automatic ash control takes place. It further relates to a suitable for carrying out the method computerized quality control system specified in the preamble of claim 6.
  • Art Such a method and such a quality control system are from the US 6,319,362 B 1 known.
  • this object is achieved by a method for producing a fibrous web, in particular paper and / or board web, in which an automatic ash control and an automatic retention control for reducing or suppressing a mutual rocking of the two regulations on a model for the dependence between the filler and the retention agent consumption are linked together accordingly.
  • the amount of retention agent is also increased or decreased in a respective increase or decrease of the amount of filler according to the model for the dependence between the filler addition and the retention agent consumption.
  • a mathematical model for the dependence between the filler addition and the retention agent consumption is used.
  • a further preferred embodiment is characterized in that a concentration measurement in the white water and / or an ash content measurement or a measurement of the ash addition amount is at least temporarily used to adapt the model to any new situations.
  • a self-learning system is also conceivable. This also means that optionally signal lines from corresponding sensors can be connected to the model computer.
  • the aforementioned object is also achieved by a computer-aided quality control system of a paper machine with an automatic ash control and an automatic retention control, which are linked via a model for the dependence between the filler addition and the retention agent consumption with each other to reduce mutual rocking of these two schemes or . to suppress.
  • the amount of retention agent can be increased or reduced.
  • a mathematical model is preferably again provided.
  • the quality control system can be designed in such a way that a reciprocal swaying of the ash control and the retention control is counteracted in a predictive manner via the model for the dependence between the filler addition and the retention agent consumption.
  • such an embodiment is also advantageous in which at least one sensor is connected or connectable to the model computer for at least temporary adaptation of the model to any new situations via which preferably a concentration measurement in the white water and / or an ash content measurement or a measurement of ash addition amount is feasible.
  • the corresponding link between the automatic ash control and the automatic retention control can thus be realized in particular by a corresponding programming of the computer-aided quality control system or model computer and, for example, the provision of stored link tables and / or the like.
  • an automatic adaptation of the model underlying the link to the respective operating situation is conceivable.
  • FIG. 1 While in the FIG. 1 the time course of said variables for a variety change without the inventive combination of the ash control and retention regulation is reproduced, shows the FIG. 2 the time course of these sizes for a variety change with inventively combined ash and retention control.
  • the basis weight (FG) at the roller is within 20 minutes after the beginning of the grade change in the target range, while the size "ash in the paper" after about 15 more minutes, ie about 35 minutes after the start of the variety change, is in the target range.
  • the consistency of the white water (SW consistency ) shows significant fluctuations.
  • the size "ash in the paper” in accordance with the invention coupled ash and retention control (see. FIG. 2 ) also after about 20 minutes after the beginning of the variety change in the target range.
  • the sizes "FG on roller” and “ash in the paper” reach the target range at about the same time, in this case, for example, about 20 minutes after the beginning of the grade change.
  • FIG. 2 it can be seen that as a result of the combination of the ash and retention control according to the invention or because of the simultaneous increase in the amount of retention agent, virtually no fluctuations in the size "SW substance density " or no headbox fluctuations occur any more.

Landscapes

  • Paper (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Claims (10)

  1. Procédé de fabrication d'une nappe de matière fibreuse, en particulier d'une nappe de papier et/ou de carton, dans lequel on effectue une régulation automatique de la teneur en cendres,
    caractérisé en ce que
    on y effectue en outre une régulation automatique de la rétention et en ce que pour diminuer ou inhiber les interactions mutuelles entre les deux régulations, ces dernières sont associées l'une à l'autre de manière appropriée par un modèle de la dépendance entre l'addition de charges et la consommation en agent de rétention.
  2. Procédé selon la revendication 1, caractérisé en ce que lorsque la quantité de charge augmente ou diminue, la quantité d'agent de rétention augmente ou diminue conformément au modèle de la dépendance entre l'addition de charges et la consommation en agent de rétention.
  3. Procédé selon les revendications 1 ou 2, caractérisé en ce qu'il utilise un modèle mathématique de la dépendance entre l'addition de charges et la consommation en agent de rétention.
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'il s'oppose de manière prédictive à des interactions entre la régulation de la teneur en cendres et la régulation de la rétention à l'aide du modèle de la dépendance entre l'addition de charges et la consommation en agent de rétention.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'il utilise au moins partiellement une mesure de la concentration dans l'eau de tamisage et/ou une mesure de la teneur en cendres ou une mesure de la quantité ajoutée de cendres pour adapter le modèle à d'éventuelles nouvelles situations.
  6. Système informatique de régulation de la qualité d'une machine à papier, en particulier en vue de mettre en oeuvre le procédé selon l'une des revendications précédentes, qui présente une régulation automatique de la teneur en cendres,
    caractérisé en ce que
    il présente de plus une régulation automatique de la rétention et en ce que les deux régulations sont associées l'une à l'autre par un modèle de la dépendance entre l'addition de charges et la consommation en agent de rétention pour diminuer ou inhiber les interactions mutuelles entre ces deux régulations.
  7. Système de régulation de qualité selon la revendication 6, caractérisé en ce que lorsque la quantité de charge augmente ou diminue, la quantité en agent de rétention peut également être augmentée ou diminuée conformément au modèle de la dépendance entre l'addition de charges et la consommation en agent de rétention.
  8. Système de régulation de qualité selon les revendications 6 ou 7, caractérisé en ce que comme modèle de la dépendance entre l'addition de charges et la consommation en agent de rétention, il présente un modèle mathématique.
  9. Système de régulation de qualité selon l'une des revendications précédentes, caractérisé en ce qu'il s'oppose de manière prédictive à des interactions mutuelles entre la régulation de la teneur en cendres et la régulation de la rétention par l'intermédiaire du modèle de la dépendance entre l'addition de charges et la consommation en agent de rétention.
  10. Système de régulation de qualité selon l'une des revendications précédentes, caractérisé en ce qu'au moins un détecteur qui permet de réaliser de préférence une mesure de concentration dans l'eau de tamisage et/ou une mesure de la teneur en cendres ou une mesure de la quantité de cendres ajoutées est raccordé ou peut être raccordé au calculateur du modèle de manière à permettre au moins à certains moments d'adapter le modèle à d'éventuelles nouvelles situations.
EP04104803A 2003-11-06 2004-09-30 Procédé de frabrication d'une bande fibreuse Expired - Lifetime EP1530103B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10351771 2003-11-06
DE10351771A DE10351771A1 (de) 2003-11-06 2003-11-06 Verfahren zur Herstellung einer Faserstoffbahn

Publications (2)

Publication Number Publication Date
EP1530103A1 EP1530103A1 (fr) 2005-05-11
EP1530103B1 true EP1530103B1 (fr) 2008-07-23

Family

ID=34428578

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04104803A Expired - Lifetime EP1530103B1 (fr) 2003-11-06 2004-09-30 Procédé de frabrication d'une bande fibreuse

Country Status (4)

Country Link
US (1) US7435314B2 (fr)
EP (1) EP1530103B1 (fr)
AT (1) ATE402431T1 (fr)
DE (2) DE10351771A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101909552A (zh) * 2007-10-29 2010-12-08 泰根尼克斯有限公司 植入物的输送装置和方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI974327L (fi) * 1997-11-25 1999-05-26 Valmet Automation Inc Menetelmä ja laitteisto paperin ominaisuuksien säätämiseksi
FI103678B (fi) * 1998-06-10 1999-08-13 Metso Paper Automation Oy Menetelmä paperin tai kartongin neliömassan säätämiseksi paperi- tai k artonkikoneessa
DE19906062A1 (de) * 1999-02-12 2000-08-17 Voith Sulzer Papiertech Patent Verfahren und Vorrichtung zur Herstellung einer Materialbahn
DE10043142A1 (de) * 2000-08-31 2001-03-01 Voith Paper Patent Gmbh Verfahren und Vorrichtung zur Regelung eines stoffdichtegeregelten Stoffauflaufs
JP4063100B2 (ja) * 2003-02-13 2008-03-19 王子製紙株式会社 抄紙機の制御方法、制御装置、プログラム及び記憶媒体

Also Published As

Publication number Publication date
EP1530103A1 (fr) 2005-05-11
DE10351771A1 (de) 2005-06-09
US20060095154A1 (en) 2006-05-04
ATE402431T1 (de) 2008-08-15
DE502004007657D1 (de) 2008-09-04
US7435314B2 (en) 2008-10-14

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