WO2005103373A3 - Method for controlling a bleaching process for waste paper treatment and bleaching device for carrying out said method - Google Patents

Method for controlling a bleaching process for waste paper treatment and bleaching device for carrying out said method Download PDF

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Publication number
WO2005103373A3
WO2005103373A3 PCT/EP2005/051729 EP2005051729W WO2005103373A3 WO 2005103373 A3 WO2005103373 A3 WO 2005103373A3 EP 2005051729 W EP2005051729 W EP 2005051729W WO 2005103373 A3 WO2005103373 A3 WO 2005103373A3
Authority
WO
WIPO (PCT)
Prior art keywords
bleaching
fibrous material
material suspension
controlling
waste paper
Prior art date
Application number
PCT/EP2005/051729
Other languages
German (de)
French (fr)
Other versions
WO2005103373A2 (en
Inventor
Joachim Horn
Henning Lenz
Thomas Runkler
Markus Dinkel
Klaus Villforth
Reinhold Goetz
Volkmar Mickal
Thomas Schmidt
Albrecht Sieber
Original Assignee
Siemens Ag
Joachim Horn
Henning Lenz
Thomas Runkler
Markus Dinkel
Klaus Villforth
Reinhold Goetz
Volkmar Mickal
Thomas Schmidt
Albrecht Sieber
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 Siemens Ag, Joachim Horn, Henning Lenz, Thomas Runkler, Markus Dinkel, Klaus Villforth, Reinhold Goetz, Volkmar Mickal, Thomas Schmidt, Albrecht Sieber filed Critical Siemens Ag
Priority to EP05740018A priority Critical patent/EP1740763A2/en
Publication of WO2005103373A2 publication Critical patent/WO2005103373A2/en
Publication of WO2005103373A3 publication Critical patent/WO2005103373A3/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/02—Working-up waste paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1052—Controlling the process
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/64—Paper recycling

Landscapes

  • Paper (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

The invention provides a method for controlling a bleaching process for waste paper treatment, which comprises the steps of preparing a fibrous material suspension, measuring the whiteness of the fibrous material suspension, mixing said fibrous material suspension with a bleaching agent, introducing the mixed fibrous material suspension into a bleaching vessel (7) and removing the mixed fibrous material suspension from said bleaching vessel after a certain period of time. Said method is characterised in that the bleaching agent contains a mixture of several substances, whereby the quantity and/or composition of the added bleaching agent is adjusted according to the measured whiteness of the fibrous material suspension, such that a set whiteness as constant as possible is obtained for the removed fibrous material suspension.
PCT/EP2005/051729 2004-04-26 2005-04-19 Method for controlling a bleaching process for waste paper treatment and bleaching device for carrying out said method WO2005103373A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05740018A EP1740763A2 (en) 2004-04-26 2005-04-19 Method for controlling a bleaching process for waste paper treatment and bleaching device for carrying out said method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004020496.9 2004-04-26
DE200410020496 DE102004020496A1 (en) 2004-04-26 2004-04-26 Method for controlling a bleaching process for waste paper processing, and a bleaching apparatus for carrying out such a method

Publications (2)

Publication Number Publication Date
WO2005103373A2 WO2005103373A2 (en) 2005-11-03
WO2005103373A3 true WO2005103373A3 (en) 2007-04-12

Family

ID=34966582

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/051729 WO2005103373A2 (en) 2004-04-26 2005-04-19 Method for controlling a bleaching process for waste paper treatment and bleaching device for carrying out said method

Country Status (5)

Country Link
EP (1) EP1740763A2 (en)
CN (1) CN101065535A (en)
DE (1) DE102004020496A1 (en)
RU (1) RU2346096C2 (en)
WO (1) WO2005103373A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104074083A (en) * 2013-03-27 2014-10-01 精工爱普生株式会社 Sheet manufacturing apparatus and method for manufacturing sheet

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980517A (en) * 1974-07-17 1976-09-14 Sentrol Systems Ltd. Continuous on-machine control of bleaching chemicals
US4013506A (en) * 1974-07-22 1977-03-22 Canadian International Paper Company Method and apparatus for automatically and simultaneously controlling solution viscosity and brightness of a pulp during multi-stage bleaching
WO1995008019A1 (en) * 1993-09-16 1995-03-23 Siemens Aktiengesellschaft Device for controlling a deinked cellulose production plant with state analysers constituted of neural networks for the waste paper suspension
DE19653479C1 (en) * 1996-12-20 1998-09-03 Siemens Ag Process and device for process control and process optimization when bleaching fibrous materials
DE19920338A1 (en) * 1999-05-03 2000-11-16 Voith Sulzer Papiertech Patent Bleaching control of a paper fiber pulp suspension uses measurements before and after bleaching with intermediate measurements to control the bleaching stage for optimum whiteness and max use of the bleaching chemicals
US6153300A (en) * 1994-04-18 2000-11-28 Ahlstrom Machinery, Inc. Bleaching cellulose pulp having cleanliness which varies significantly over time using at least two different bleaching stages and bleaching chemicals

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19510009C2 (en) * 1995-03-23 2000-05-11 Siemens Ag Process and device for process control of a paper machine
DE19653530C1 (en) * 1996-12-20 1998-07-23 Siemens Ag Process and device for process control and process optimization in the production of pulp
DE10043893A1 (en) * 2000-09-06 2002-03-14 Voith Paper Patent Gmbh Process for carrying out a flotation, bleaching and / or dispersing process used for fiber or paper production

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980517A (en) * 1974-07-17 1976-09-14 Sentrol Systems Ltd. Continuous on-machine control of bleaching chemicals
US4013506A (en) * 1974-07-22 1977-03-22 Canadian International Paper Company Method and apparatus for automatically and simultaneously controlling solution viscosity and brightness of a pulp during multi-stage bleaching
WO1995008019A1 (en) * 1993-09-16 1995-03-23 Siemens Aktiengesellschaft Device for controlling a deinked cellulose production plant with state analysers constituted of neural networks for the waste paper suspension
US6153300A (en) * 1994-04-18 2000-11-28 Ahlstrom Machinery, Inc. Bleaching cellulose pulp having cleanliness which varies significantly over time using at least two different bleaching stages and bleaching chemicals
DE19653479C1 (en) * 1996-12-20 1998-09-03 Siemens Ag Process and device for process control and process optimization when bleaching fibrous materials
DE19920338A1 (en) * 1999-05-03 2000-11-16 Voith Sulzer Papiertech Patent Bleaching control of a paper fiber pulp suspension uses measurements before and after bleaching with intermediate measurements to control the bleaching stage for optimum whiteness and max use of the bleaching chemicals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104074083A (en) * 2013-03-27 2014-10-01 精工爱普生株式会社 Sheet manufacturing apparatus and method for manufacturing sheet

Also Published As

Publication number Publication date
EP1740763A2 (en) 2007-01-10
CN101065535A (en) 2007-10-31
DE102004020496A1 (en) 2005-11-17
RU2346096C2 (en) 2009-02-10
RU2006141637A (en) 2008-06-10
WO2005103373A2 (en) 2005-11-03

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