EP1767690A3 - Method for controlling sorting systems and sorting system for using the method - Google Patents

Method for controlling sorting systems and sorting system for using the method Download PDF

Info

Publication number
EP1767690A3
EP1767690A3 EP07000198A EP07000198A EP1767690A3 EP 1767690 A3 EP1767690 A3 EP 1767690A3 EP 07000198 A EP07000198 A EP 07000198A EP 07000198 A EP07000198 A EP 07000198A EP 1767690 A3 EP1767690 A3 EP 1767690A3
Authority
EP
European Patent Office
Prior art keywords
sorting system
controlling
fine
fraction
sorting
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.)
Withdrawn
Application number
EP07000198A
Other languages
German (de)
French (fr)
Other versions
EP1767690A2 (en
Inventor
Samuel Dr. Schabel
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 EP1767690A2 publication Critical patent/EP1767690A2/en
Publication of EP1767690A3 publication Critical patent/EP1767690A3/en
Withdrawn legal-status Critical Current

Links

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
    • 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

Abstract

Controlling a sorting system for papermaking, in which a pulp suspension is separated into fine and coarse fractions, the coarse fraction is resorted and the fine fraction is recycled, comprises determining the inlet and outlet mass flows by online measurement or calculation and supplying the results to a status controller for mathematical modeling and controlling the sorting system and modifying machine parameters selectable as a function of preset target values, e.g. production, efficiency and fiber loss. An independent claim is also included for a sorting system for papermaking, comprising two sorters with outlets for fine and coarse fractions equipped with flow sensors and control valves, where the fine fraction from the second sorter is added to the fine fraction from the first sorter, and a status controller that balances the mass flows by receiving the output signals from the flow sensors and controlling selectable machine parameters as a function of preset target values taking into account a mathematical model of the sorting system.
EP07000198A 2001-12-10 2002-11-04 Method for controlling sorting systems and sorting system for using the method Withdrawn EP1767690A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10160603A DE10160603A1 (en) 2001-12-10 2001-12-10 Method for regulating sorting systems and sorting system suitable for carrying out this method
EP02024605A EP1318229B1 (en) 2001-12-10 2002-11-04 Method for controlling sorting systems and sorting system for using the method

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP02024605A Division EP1318229B1 (en) 2001-12-10 2002-11-04 Method for controlling sorting systems and sorting system for using the method

Publications (2)

Publication Number Publication Date
EP1767690A2 EP1767690A2 (en) 2007-03-28
EP1767690A3 true EP1767690A3 (en) 2007-10-24

Family

ID=7708666

Family Applications (2)

Application Number Title Priority Date Filing Date
EP02024605A Expired - Fee Related EP1318229B1 (en) 2001-12-10 2002-11-04 Method for controlling sorting systems and sorting system for using the method
EP07000198A Withdrawn EP1767690A3 (en) 2001-12-10 2002-11-04 Method for controlling sorting systems and sorting system for using the method

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP02024605A Expired - Fee Related EP1318229B1 (en) 2001-12-10 2002-11-04 Method for controlling sorting systems and sorting system for using the method

Country Status (6)

Country Link
US (1) US7083049B2 (en)
EP (2) EP1318229B1 (en)
JP (1) JP2003239186A (en)
AT (1) ATE358742T1 (en)
CA (1) CA2413486A1 (en)
DE (2) DE10160603A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10350073A1 (en) * 2003-10-27 2005-06-09 Siemens Ag White control method for ink removal in deinking plants and a deinking plant with a flotation cell for ink removal
AT501723B1 (en) * 2005-06-16 2006-11-15 Andritz Ag Maschf METHOD FOR REMOVING CONTAMINATION FROM FIBROUS SUSPENSIONS
DE102008013034B3 (en) 2008-03-07 2009-09-17 Technische Universität Darmstadt Method for adjusting and / or optimizing a sorting plant and sorting plant separating a good from a bad substance
US10041209B1 (en) 2015-08-21 2018-08-07 Pulmac Systems International, Inc. System for engineering fibers to improve paper production
US11214925B2 (en) 2015-08-21 2022-01-04 Pulmac Systems International, Inc. Method of preparing recycled cellulosic fibers to improve paper production
US10941520B2 (en) 2015-08-21 2021-03-09 Pulmac Systems International, Inc. Fractionating and refining system for engineering fibers to improve paper production
JP6562157B2 (en) * 2016-08-31 2019-08-21 セイコーエプソン株式会社 Sheet manufacturing apparatus and sheet manufacturing apparatus control method
JP7211022B2 (en) * 2018-11-07 2023-01-24 セイコーエプソン株式会社 Web manufacturing equipment and sheet manufacturing equipment
DE102019125317A1 (en) * 2019-09-20 2021-03-25 Voith Patent Gmbh Cleaning process
BR112022009347A2 (en) * 2019-11-14 2022-08-09 Buckman Laboratories Int Inc METHOD IMPLEMENTED BY COMPUTER AND SYSTEM FOR PREDICTIVE CONTROL OF RAW PULP TREATMENT IN A PULP FACTORY

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983001969A1 (en) * 1981-11-24 1983-06-09 Nils Anders Lennart Wikdahl Method of preventing clogging a screening means
WO1993025752A1 (en) * 1992-06-05 1993-12-23 Sunds Defibrator Industries Aktiebolag Screening of pulp
WO1997032078A1 (en) * 1996-02-29 1997-09-04 Alfa Laval Ab Process and apparatus for controlling the purification and yield of fibers from a fiber suspension
EP0931873A1 (en) * 1998-01-23 1999-07-28 Voith Sulzer Papiertechnik Patent GmbH Process for removing contaminants from a fibre suspension
WO2001059206A1 (en) * 2000-02-11 2001-08-16 Metso Paper Inc Method for controlling quality of pulp

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3110172A (en) * 1961-03-06 1963-11-12 Process & Steam Specialties In Consistancy and freeness measuring and regulating apparatus for thin stock pulp and paper
US3873416A (en) * 1970-11-27 1975-03-25 Alkibiadis Karnis System for the continuous measurement of the weight-average fiber length of a pulp
US3886035A (en) * 1973-03-12 1975-05-27 Kamyr Inc Process for separating knots from pulp
US4342618A (en) * 1979-05-14 1982-08-03 Alkibiadis Karnis Method and apparatus on-line monitoring of fibre length of mechanical pumps
DE3241876A1 (en) * 1982-11-12 1984-05-17 J.M. Voith Gmbh, 7920 Heidenheim DEVICE FOR FACTIONING FIBER SUSPENSION
US6080274A (en) * 1997-05-06 2000-06-27 Valmet Corporation Method for controlling a multi-phase screening apparatus
DE19806734A1 (en) 1998-01-23 1998-09-17 Voith Sulzer Papiertech Patent Flotation cleaning of fibre suspensions especially for processing used paper materials, for recycling
DE19819110A1 (en) * 1998-04-29 1999-11-04 Voith Sulzer Papiertech Patent Improving overall efficiency of fibrous suspension wet sieving
DE19910910A1 (en) 1999-03-11 2000-09-28 Voith Sulzer Papiertech Patent Process for carrying out an optimized fiber or paper production process
FI112806B (en) * 2001-03-09 2004-01-15 Metso Paper Inc A method for controlling the quality of a pulp

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983001969A1 (en) * 1981-11-24 1983-06-09 Nils Anders Lennart Wikdahl Method of preventing clogging a screening means
WO1993025752A1 (en) * 1992-06-05 1993-12-23 Sunds Defibrator Industries Aktiebolag Screening of pulp
WO1997032078A1 (en) * 1996-02-29 1997-09-04 Alfa Laval Ab Process and apparatus for controlling the purification and yield of fibers from a fiber suspension
EP0931873A1 (en) * 1998-01-23 1999-07-28 Voith Sulzer Papiertechnik Patent GmbH Process for removing contaminants from a fibre suspension
WO2001059206A1 (en) * 2000-02-11 2001-08-16 Metso Paper Inc Method for controlling quality of pulp

Also Published As

Publication number Publication date
US20030116661A1 (en) 2003-06-26
CA2413486A1 (en) 2003-06-10
EP1767690A2 (en) 2007-03-28
JP2003239186A (en) 2003-08-27
ATE358742T1 (en) 2007-04-15
DE10160603A1 (en) 2003-06-26
US7083049B2 (en) 2006-08-01
EP1318229B1 (en) 2007-04-04
EP1318229A1 (en) 2003-06-11
DE50209858D1 (en) 2007-05-16

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