US20150292158A1 - Method for controlling the formation of a fiber web of a fiber or paper producing process - Google Patents

Method for controlling the formation of a fiber web of a fiber or paper producing process Download PDF

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Publication number
US20150292158A1
US20150292158A1 US14/432,242 US201314432242A US2015292158A1 US 20150292158 A1 US20150292158 A1 US 20150292158A1 US 201314432242 A US201314432242 A US 201314432242A US 2015292158 A1 US2015292158 A1 US 2015292158A1
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United States
Prior art keywords
formation
manipulated variables
controlling
fiber
measured values
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Abandoned
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US14/432,242
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English (en)
Inventor
Oliver Kaufmann
Jens Haag
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Voith Patent GmbH
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Voith Patent GmbH
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Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Assigned to VOITH PATENT GMBH reassignment VOITH PATENT GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HAAG, JENS, KAUFMANN, OLIVER
Publication of US20150292158A1 publication Critical patent/US20150292158A1/en
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    • 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
    • D21G9/0054—Paper-making control systems details of algorithms or programs
    • 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
    • D21G9/0027—Paper-making control systems controlling the forming 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
    • 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
    • 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

Definitions

  • the invention relates to a method for controlling the formation of a fiber web of a fiber or paper-producing process.
  • Fiber webs inter alia may also be a tissue or a cardboard web.
  • the process of fiber or paper production substantially is composed of a plurality of successive individual method steps in which controllable chemical and/or physical sequences or process steps, respectively, take place depending on measured values.
  • the materials required for generating the fiber web are treated, combined, and/or dewatered in the individual process steps.
  • the measured values may be detected inline and directly or indirectly used for controlling the formation. Besides, the measured values may however also be determined offline in a laboratory.
  • a particularly important measured variable in judging the quality of the fiber web is the formation, that is to say the distribution and composition of the fibers in the web.
  • the formation that is to say the distribution and composition of the fibers in the web.
  • the formation is influenced by various modifiable essential variables or manipulated variables, respectively, such as vacuum, wire tension, etc..
  • each re-adjustment of a manipulated variable not only influences the process said manipulated variable is intended to influence, but also downstream processes. Re-adjustments of a process thus cause consequential effects, such as, for example, increased wire wear, higher usage of chemicals, etc.. These effects thus always also affect the total costs.
  • a method for controlling the formation of a fiber web of the type mentioned at the outset is proposed, in which at least the manipulated variables of the individual sequences or processes, respectively, which influence the formation in a relevant manner in the entire process are generated depending on definable secondary conditions.
  • the formation is influenced by a plurality of successive individual method steps in which controllable chemical and/or physical sequences or process steps, respectively, take place depending on measured values, wherein at least some of the measured values are detected inline and directly or indirectly used for controlling the formation.
  • the materials required for generating the fiber web are treated, combined, and/or dewatered in successive individual method steps.
  • all measured values are processed in a data processing system, and manipulated values according to defined specifications are generated therefrom.
  • Secondary conditions in the sense of the invention are thus understood to be conditions which defines value ranges which must not be departed from or which permit a re-adjustment of the control values only within a defined range, respectively, such that the measured values at the measuring points which are assigned to the process do not overshoot and/or undershoot certain limits.
  • the manipulated variables may be generated depending on definable costing functions.
  • One consequential effect may be the costs.
  • the formation or the entire process, respectively may be additionally optimized with a view toward reducing costs, wherein at all times also the other secondary conditions and ultimately also the formation has to be within certain limits.
  • the costs of expenditure which arise as a result of the modification of the manipulated variables may also be evaluated by means of the costing function.
  • the costing function may also evaluate the consequential costs.
  • the secondary conditions may be generated depending on the initial materials or raw materials, respectively, and/or on the chemicals, auxiliaries, and energy supplied in the successive method steps, as well as on the materials and emissions to be disposed of.
  • an optimizing algorithm by means of which the costing functions may be optimized while adhering to the secondary conditions may be employed, in that, while considering the secondary conditions and the consequential effects, all decisive manipulated variables are only re-adjusted to the extent that the formation achieves a target value or a formation value, respectively.
  • the optimizing algorithm in order to adhere to the secondary formation conditions, may influence the manipulated variables influencing the individual sequences or processes, respectively, in the entire process such that the value of a potential deviation of the formation from the nominal value is minimized.
  • the optimizing algorithm may also be assigned a stored model which either by way of a-priori knowledge or by way of interpretation of the effects of previous re-adjustments reproduces the influence of the manipulated variables on the formation in a qualitative manner, on account of which the down times of the processes are advantageously conjointly considered.
  • the individual methods in the sense of the invention substantially take place in the stock preparation, the headbox feed, and the wet end of a fiber-web production machine; that is to say in those regions of a production machine for fiber webs where modifying or influencing the formation may take place.
  • At least one of the following manipulated variables may be used for controlling the formation in the stock preparation:
  • At least one of the following manipulated variables may be used for controlling the formation in the headbox feed:
  • At least one of the following manipulated variables may be used for controlling the formation in the wet end:
  • the wire characteristics as well as the wire running time in particular the change in the CFM value, have an influence on the stable running of the machines, as well as on the costs, and may be included in the secondary conditions as a function, for example.
  • FIG. 1 shows a block diagram for illustrating the formation control
  • FIG. 2 shows a line chart for illustrating the correlations between manipulated variables, secondary conditions, and costs relative to a constant formation.
  • FIG. 1 shows a block diagram for illustrating the formation control with the aid of which functioning of the system or of the control, respectively, of the formation may be described.
  • the system or the control 1 respectively, of the formation of a fiber web of a fiber or paper producing process depends on a multiplicity of successive individual method steps. In this fashion, various controllable chemical and/or physical sequences or process steps, respectively, take place in the individual methods steps, depending on measured values, in order to treat, combine, and/or to dewater the material required for the formation of the fiber web.
  • the individual method steps which are responsible for generating the formation have been compiled in FIG. 1 in block 3 .
  • the methods or processes may take place in the stock preparation, the wet end process, the headbox feed, and the former, wherein each process is capable of being influenced by at least one manipulated variable 2 .
  • manipulated variables a 1 , a 2 , . . . refers to those already mentioned, this not being a complete enumeration.
  • the secondary conditions have an influence on the formation in that individual relevant manipulated variables are generated depending on definable secondary conditions.
  • the secondary conditions are defined in such a manner that a particularly stable operation of the paper machine is ensured. Certain measured values thus must not exceed certain limits which must be mandatorily adhered to in order for the formation to be optimized.
  • the control strategy may be implemented with the aid of an optimizing algorithm which minimizes the costing function and thereby adheres to the secondary conditions.
  • the consequential effects 5 are derived from the individual re-adjustments of the manipulated variables of the processes.
  • the consequential effects may be measured online or in the laboratory, and are directly or indirectly included in the secondary conditions. In other words, the limits of the secondary conditions are influenced by the consequential conditions. Consequential effects may include wear, energy consumption, consumption of chemicals, etc..
  • FIG. 2 A line diagram for illustrating the correlations between manipulated variables, secondary conditions, and costs relative to a constant formation is illustrated in FIG. 2 .
  • the essential variables (expenditure) which are re-adjustable by the control are evaluated as expenditure costs by way of a corresponding pricing function.
  • the consequential costs which arise on account of the re-adjustable essential variables are likewise determined.
  • the costing function thus calculates from the total cost from the expenditure and consequential costs of the setting of the manipulated variables which are relevant to the formation. This costing function is minimized by way of an optimizing algorithm, while adhering to the secondary conditions defined above, such that an (iterative) step-by-step modification of the setting takes place up to a cost-optimized operating point, wherein the formation remains as a variable within a permissible tolerance range.
  • the optimizing algorithm does/can design re-adjusting such that the value of a potential deviation of the formation from the nominal value (range) is minimized (in an ideal case to 0). This may take place by way of a model which either by way of a-priori knowledge or by way of interpretation of the effects of the previous re-adjustments reproduces the influence of the manipulated variables on the formation in a quantitative manner.

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  • Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Paper (AREA)
US14/432,242 2012-09-28 2012-09-18 Method for controlling the formation of a fiber web of a fiber or paper producing process Abandoned US20150292158A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102012217729.9 2012-09-28
DE102012217729A DE102012217729A1 (de) 2012-09-28 2012-09-28 Verfahren zur Regelung einer Faserstoffbahnherstellungsmaschine zum Verbessern der Formation
PCT/EP2013/069370 WO2014048811A1 (fr) 2012-09-28 2013-09-18 Procédé de réglage de la formation d'une bande continue de matière fibreuse dans un processus de production de fibres ou de papier

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2013/063441 A-371-Of-International WO2014055853A1 (fr) 2012-10-05 2013-10-04 Enzymes formant des ensembles mésoporeux intégrés dans des échafaudages macroporeux

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US15/701,920 Division US10351841B2 (en) 2012-10-05 2017-09-12 Method for inhibiting growth of microorganisms with macroporous scaffolds

Publications (1)

Publication Number Publication Date
US20150292158A1 true US20150292158A1 (en) 2015-10-15

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US14/432,242 Abandoned US20150292158A1 (en) 2012-09-28 2012-09-18 Method for controlling the formation of a fiber web of a fiber or paper producing process

Country Status (5)

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US (1) US20150292158A1 (fr)
EP (1) EP2900868B1 (fr)
CN (1) CN104704168B (fr)
DE (1) DE102012217729A1 (fr)
WO (1) WO2014048811A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150292158A1 (en) * 2012-09-28 2015-10-15 Voith Patent Gmbh Method for controlling the formation of a fiber web of a fiber or paper producing process
DE102016216387A1 (de) 2016-08-31 2018-03-01 Voith Patent Gmbh Verfahren zur Steuerung einer Faserstoffbahnherstellungsmaschine
DE102016120647B4 (de) * 2016-10-28 2018-07-26 Voith Patent Gmbh Verfahren zum Betreiben einer Maschine zur Herstellung einer Faserstoffbahn

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3620914A (en) * 1967-04-28 1971-11-16 Industrial Nucleonics Corp Headbox jet velocity measuring system and method
US5812404A (en) * 1996-04-18 1998-09-22 Valmet Corporation Method for overall regulation of the headbox of a paper machine or equivalent
US5825653A (en) * 1997-03-14 1998-10-20 Valmet Corporation Method for overall regulation of a former of a paper machine or equivalent
US6076022A (en) * 1998-01-26 2000-06-13 Honeywell-Measurex Corporation Paper stock shear and formation control
US6086716A (en) * 1998-05-11 2000-07-11 Honeywell-Measurex Corporation Wet end control for papermaking machine
US6092003A (en) * 1998-01-26 2000-07-18 Honeywell-Measurex Corporation Paper stock shear and formation control
US6162331A (en) * 1997-08-20 2000-12-19 Voith Sulzer Papiermaschinen Gmbh Apparatus and process for controlling or regulating a web property profile
US6203665B1 (en) * 1998-08-05 2001-03-20 Voith Sulzer Papiertechnik Patent Gmbh Process for setting a uniform characteristic cross-direction profile for a paper web
CA2381496A1 (fr) * 2001-04-12 2002-10-12 Voith Paper Patent Gmbh Methode et appareil pour produire un voile en materiau fibreux
DE102007047843A1 (de) * 2007-11-22 2009-05-28 Voith Patent Gmbh Vorrichtung mit einem Band und wenigstens einem Sensor zur Bestimmung des Flüssigkeitsgewichtes in einem Bandabschnitt, der keine Stoffsuspension trägt
DE102007055833A1 (de) * 2007-12-17 2009-06-18 Voith Patent Gmbh System und Verfahren zur Regelung wenigstens eines Qualitätsparameters einer Materialbahn, insbesondere einer Faserstoffbahn in einer Papier- und/oder Kartonmaschine
US20100141270A1 (en) * 2007-06-02 2010-06-10 Oliver Kaufmann Process and device to measure at least one qualitative value of a fibrous web
US20110024069A1 (en) * 2008-07-24 2011-02-03 Thomas Ruehl Method for optimizing the energy balance in forming sections in machines for the production of fibrous webs, and forming section
US20130213596A1 (en) * 2010-09-20 2013-08-22 Voith Patent Gmbh Method for regulating the formation of a fibrous web
DE102012217729A1 (de) * 2012-09-28 2013-10-17 Voith Patent Gmbh Verfahren zur Regelung einer Faserstoffbahnherstellungsmaschine zum Verbessern der Formation

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997039182A1 (fr) 1996-04-18 1997-10-23 Valmet Corporation Procede continu de regulation generale de la caisse de tete et/ou du formeur d'une machine a papier ou a carton
DE19653477C2 (de) 1996-12-20 1999-04-22 Siemens Ag Verfahren und Vorrichtung zur Prozeßführung bei der Herstellung von Papier
FI974328A (fi) 1997-11-25 1999-05-26 Valmet Automation Inc Menetelmä ja laitteisto paperin ominaisuuksien säätämiseksi
FI974327A (fi) * 1997-11-25 1999-05-26 Valmet Automation Inc Menetelmä ja laitteisto paperin ominaisuuksien säätämiseksi
FI982625A (fi) 1998-12-04 2000-06-05 Valmet Automation Inc Menetelmä ja laitteisto paperin ominaisuuksien säätämiseksi
DE19910910A1 (de) * 1999-03-11 2000-09-28 Voith Sulzer Papiertech Patent Verfahren zur Durchführung eines optimierten Faser- oder Papierherstellungsprozesses
EP1239074B1 (fr) 2001-03-08 2005-08-31 Voith Paper Patent GmbH Procede pour la preparation de papier satine
US20030000669A1 (en) * 2001-05-11 2003-01-02 Invensys Systems, Inc. Methods and systems for controlling paper quality by adjusting fiber filter parameters
FI20012175A (fi) 2001-11-09 2003-05-10 Metso Paper Automation Oy Menetelmä ja laitteisto viiraosan toiminnan säätämiseksi
FI112682B (fi) 2002-05-24 2003-12-31 Metso Paper Inc Menetelmä kuiturainan laatusuureiden säätämiseksi kenkäkalanterissa
FI20021901A0 (fi) * 2002-10-24 2002-10-24 Liqum Oy Menetelmä prosessin valvomiseksi
DE10305596A1 (de) 2003-02-11 2004-09-02 Voith Paper Patent Gmbh Verfahren zum Erstellen einer standardisierten Zustandsanalyse von bei der Herstellung einer Faserstoffbahn die Qualität der herzustellenden Faerstoffbahn beeinflussenden Parametern und/oder Betriebszuständen und Maschine zur Durchführung des Verfahrens
DE10355687A1 (de) 2003-11-28 2005-06-23 Voith Paper Patent Gmbh Verfahren zur Herstellung einer Faserstoffbahn
DE102005062304A1 (de) * 2005-12-24 2007-06-28 Voith Patent Gmbh Verfahren und Anlage zur Herstellung einer Faserstoffbahn
US7454253B2 (en) * 2006-03-30 2008-11-18 Honeywell Asca Inc. Fast performance prediction of multivariable model predictive controller for paper machine cross-directional processes
DE102006049026A1 (de) 2006-10-13 2008-04-17 Voith Patent Gmbh Vorrichtung und Verfahren zur Herstellung einer Faserstoffbahn

Patent Citations (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3620914A (en) * 1967-04-28 1971-11-16 Industrial Nucleonics Corp Headbox jet velocity measuring system and method
US5812404A (en) * 1996-04-18 1998-09-22 Valmet Corporation Method for overall regulation of the headbox of a paper machine or equivalent
US5825653A (en) * 1997-03-14 1998-10-20 Valmet Corporation Method for overall regulation of a former of a paper machine or equivalent
US6162331A (en) * 1997-08-20 2000-12-19 Voith Sulzer Papiermaschinen Gmbh Apparatus and process for controlling or regulating a web property profile
US6076022A (en) * 1998-01-26 2000-06-13 Honeywell-Measurex Corporation Paper stock shear and formation control
US6092003A (en) * 1998-01-26 2000-07-18 Honeywell-Measurex Corporation Paper stock shear and formation control
US6086716A (en) * 1998-05-11 2000-07-11 Honeywell-Measurex Corporation Wet end control for papermaking machine
US6203665B1 (en) * 1998-08-05 2001-03-20 Voith Sulzer Papiertechnik Patent Gmbh Process for setting a uniform characteristic cross-direction profile for a paper web
DE10118508A1 (de) * 2001-04-12 2002-10-17 Voith Paper Patent Gmbh Verfahren und Anlage zur Herstellung einer Faserstoffbahn
EP1249532A2 (fr) * 2001-04-12 2002-10-16 Voith Paper Patent GmbH Procédé et installation pour contrôle de la formation
CA2381496A1 (fr) * 2001-04-12 2002-10-12 Voith Paper Patent Gmbh Methode et appareil pour produire un voile en materiau fibreux
US20020179268A1 (en) * 2001-04-12 2002-12-05 Voith Paper Patent Gmbh Method and apparatus for manufacturing a fibrous material web
US6805772B2 (en) * 2001-04-12 2004-10-19 Voith Paper Patent Gmbh Method and apparatus for manufacturing a fibrous material web
US20100141270A1 (en) * 2007-06-02 2010-06-10 Oliver Kaufmann Process and device to measure at least one qualitative value of a fibrous web
DE102007047843A1 (de) * 2007-11-22 2009-05-28 Voith Patent Gmbh Vorrichtung mit einem Band und wenigstens einem Sensor zur Bestimmung des Flüssigkeitsgewichtes in einem Bandabschnitt, der keine Stoffsuspension trägt
DE102007055833A1 (de) * 2007-12-17 2009-06-18 Voith Patent Gmbh System und Verfahren zur Regelung wenigstens eines Qualitätsparameters einer Materialbahn, insbesondere einer Faserstoffbahn in einer Papier- und/oder Kartonmaschine
US20110024069A1 (en) * 2008-07-24 2011-02-03 Thomas Ruehl Method for optimizing the energy balance in forming sections in machines for the production of fibrous webs, and forming section
US20120145346A1 (en) * 2008-07-24 2012-06-14 Voith Patent Gmbh Method for optimizing the energy balance in forming sections in machines for the production of fibrous webs, and forming section
US8323452B2 (en) * 2008-07-24 2012-12-04 Voith Patent Gmbh Method for optimizing the energy balance in forming sections in machines for the production of fibrous webs, and forming section using control elements associated with dewatering units
US20130213596A1 (en) * 2010-09-20 2013-08-22 Voith Patent Gmbh Method for regulating the formation of a fibrous web
US9096973B2 (en) * 2010-09-20 2015-08-04 Voith Patent Gmbh Method for regulating the formation of a fibrous web
DE102012217729A1 (de) * 2012-09-28 2013-10-17 Voith Patent Gmbh Verfahren zur Regelung einer Faserstoffbahnherstellungsmaschine zum Verbessern der Formation

Also Published As

Publication number Publication date
DE102012217729A1 (de) 2013-10-17
CN104704168B (zh) 2017-03-08
WO2014048811A1 (fr) 2014-04-03
EP2900868A1 (fr) 2015-08-05
CN104704168A (zh) 2015-06-10
EP2900868B1 (fr) 2021-11-10

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