FI20025023A - Process of a paper or cellulose process to check chemical status in a pulp and backwater system - Google Patents

Process of a paper or cellulose process to check chemical status in a pulp and backwater system

Info

Publication number
FI20025023A
FI20025023A FI20025023A FI20025023A FI20025023A FI 20025023 A FI20025023 A FI 20025023A FI 20025023 A FI20025023 A FI 20025023A FI 20025023 A FI20025023 A FI 20025023A FI 20025023 A FI20025023 A FI 20025023A
Authority
FI
Finland
Prior art keywords
pulp
paper
cellulose
tmp
reject
Prior art date
Application number
FI20025023A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI20025023A0 (en
Inventor
Sakari Laitinen-Vellonen
Original Assignee
Liqum Oy
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
Priority claimed from FI20015022A external-priority patent/FI20015022A0/en
Application filed by Liqum Oy filed Critical Liqum Oy
Priority to FI20025023A priority Critical patent/FI20025023A/en
Publication of FI20025023A0 publication Critical patent/FI20025023A0/en
Priority to EP02753105A priority patent/EP1430178B1/en
Priority to US10/487,304 priority patent/US20040238140A1/en
Priority to PCT/FI2002/000684 priority patent/WO2003018908A1/en
Priority to AT02753105T priority patent/ATE357556T1/en
Priority to CA2456538A priority patent/CA2456538C/en
Priority to DE60219046T priority patent/DE60219046T2/en
Publication of FI20025023A publication Critical patent/FI20025023A/en

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
    • 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
    • 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
    • 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
    • D21H23/78—Controlling or regulating not limited to any particular process or apparatus
    • 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
    • D21H23/04—Addition to the pulp; After-treatment of added substances in the pulp
    • D21H23/06—Controlling the addition
    • D21H23/08—Controlling the addition by measuring pulp properties, e.g. zeta potential, pH

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

The invention relates to a method in a paper or pulp process to control the chemical state of the pulp and circulation water system. In the process one or more raw-material components (PROCESS WATER, TMP, PULP, REJECT) diluted in liquid, possible fillers, and one or more additives are mixed to form stock. In the method, the electrochemical state of at least one raw-material component (PROCESS WATER, TMP, PULP, REJECT) and/or the stock is regulated, without the regulation substantially affecting the pH values of the raw-material components (PROCESS WATER, TMP, PULP, REJECT) and/or of the stock.
FI20025023A 2001-08-21 2002-05-17 Process of a paper or cellulose process to check chemical status in a pulp and backwater system FI20025023A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FI20025023A FI20025023A (en) 2001-08-21 2002-05-17 Process of a paper or cellulose process to check chemical status in a pulp and backwater system
EP02753105A EP1430178B1 (en) 2001-08-21 2002-08-21 Method in a paper or pulp process to control the chemical state of the pulp and circulation water system
US10/487,304 US20040238140A1 (en) 2001-08-21 2002-08-21 Method in a paper or pulp process to control the chemical state of the pulp and circulation water system
PCT/FI2002/000684 WO2003018908A1 (en) 2001-08-21 2002-08-21 Method in a paper or pulp process to control the chemical state of the pulp and circulation water system
AT02753105T ATE357556T1 (en) 2001-08-21 2002-08-21 THE PAPER OR PULP PRODUCTION ACCOMPANYING PROCESS FOR CONTROLLING THE CHEMICAL STATE OF THE PULP AND CIRCULATED WATER SYSTEM
CA2456538A CA2456538C (en) 2001-08-21 2002-08-21 Method in a paper or pulp process to control the chemical state of the pulp and circulation water system
DE60219046T DE60219046T2 (en) 2001-08-21 2002-08-21 THE PAPER BZW. SEMI-PRODUCTION ACCOMPANYING METHOD FOR CONTROLLING THE CHEMICAL CONDITION OF THE SEMI-CIRCULAR AND CIRCULATORY WATER SYSTEM

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20015022A FI20015022A0 (en) 2001-08-21 2001-08-21 Process for making paper or board
FI20025023A FI20025023A (en) 2001-08-21 2002-05-17 Process of a paper or cellulose process to check chemical status in a pulp and backwater system

Publications (2)

Publication Number Publication Date
FI20025023A0 FI20025023A0 (en) 2002-05-17
FI20025023A true FI20025023A (en) 2003-02-22

Family

ID=26161249

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20025023A FI20025023A (en) 2001-08-21 2002-05-17 Process of a paper or cellulose process to check chemical status in a pulp and backwater system

Country Status (7)

Country Link
US (1) US20040238140A1 (en)
EP (1) EP1430178B1 (en)
AT (1) ATE357556T1 (en)
CA (1) CA2456538C (en)
DE (1) DE60219046T2 (en)
FI (1) FI20025023A (en)
WO (1) WO2003018908A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12072279B2 (en) 2018-11-27 2024-08-27 Kemira Oyj Method for estimating the vapor phase corrosion load

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20051096A (en) * 2005-10-31 2007-05-01 Savcor Process Oy Procedure in a wet portion of a paper machine, cardboard machine or other similar forming machine
FI123392B (en) * 2008-02-22 2013-03-28 Upm Kymmene Oyj Method for Precipitation of Calcium Carbonate in a Fibrous Web Process and Fiber Machine Machine Approach
WO2011149797A1 (en) * 2010-05-22 2011-12-01 Eltron Research & Development Inc. Paper dewatering
DE102010041052A1 (en) * 2010-09-20 2012-03-22 Voith Patent Gmbh Method for controlling the formation of a fibrous web
DE102011083709A1 (en) * 2011-09-29 2013-04-04 Voith Patent Gmbh Operating procedure for a stock preparation
CN109642371B (en) * 2016-08-31 2021-11-12 精工爱普生株式会社 Sheet manufacturing apparatus and method for controlling sheet manufacturing apparatus
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

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3876497A (en) * 1971-11-23 1975-04-08 Sterling Drug Inc Paper mill waste sludge oxidation and product recovery
DE2746179A1 (en) * 1977-10-14 1979-04-19 Bayer Ag METHOD FOR MEASURING THE CHARGE STATE OF SUSPENSIONS AND FOR CONTROLLING THE ADDITION OF ADDITIVES TO SUSPENSIONS
SE442414B (en) * 1981-09-22 1985-12-23 Holmens Bruk Ab SETTING TO REDUCE OR INHIBIT THE MARKING OF PASS OR PAPER IN BACKWATER SYSTEM
ATE26888T1 (en) * 1981-11-09 1987-05-15 Wiggins Teape Group Ltd APPARATUS FOR DETERMINING AN ELECTRICAL CHARACTERISTIC OF A FIBER DISPERSION.
US4752356A (en) * 1985-10-18 1988-06-21 Miami University Papermaking process
US6072309A (en) * 1996-12-13 2000-06-06 Honeywell-Measurex Corporation, Inc. Paper stock zeta potential measurement and control
US6176974B1 (en) * 1997-12-22 2001-01-23 International Paper Company Method for determining electrokinetic properties of papermaking furnish
US5936151A (en) * 1997-12-22 1999-08-10 International Paper Company Method and apparatus for measuring an electrical property of papermaking furnish
US6086716A (en) * 1998-05-11 2000-07-11 Honeywell-Measurex Corporation Wet end control for papermaking machine
FI113089B (en) * 1999-10-06 2004-02-27 Liqum Oy Method for analyzing papermaking process and electrochemical sensor for analyzing liquid
PT1290507E (en) * 2000-04-05 2005-01-31 Liqum Oy METHOD AND SYSTEM FOR CONTROLLING AND ANALYZING A PAPER MANUFACTURING PROCESS
US7056419B2 (en) * 2002-09-30 2006-06-06 American Air Liquide, Inc. Methods for modifying electrical properties of papermaking compositions using carbon dioxide
FI20021901A0 (en) * 2002-10-24 2002-10-24 Liqum Oy Procedure for controlling a process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12072279B2 (en) 2018-11-27 2024-08-27 Kemira Oyj Method for estimating the vapor phase corrosion load

Also Published As

Publication number Publication date
CA2456538A1 (en) 2003-03-06
FI20025023A0 (en) 2002-05-17
EP1430178B1 (en) 2007-03-21
ATE357556T1 (en) 2007-04-15
US20040238140A1 (en) 2004-12-02
EP1430178A1 (en) 2004-06-23
CA2456538C (en) 2010-04-27
WO2003018908A1 (en) 2003-03-06
DE60219046T2 (en) 2007-12-13
DE60219046D1 (en) 2007-05-03

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Legal Events

Date Code Title Description
PC Transfer of assignment of patent

Owner name: LIQUM PAPER OY

Free format text: LIQUM PAPER OY