AU6892696A - Method for preventing accumulation of metals in a closed pulp bleaching process - Google Patents

Method for preventing accumulation of metals in a closed pulp bleaching process

Info

Publication number
AU6892696A
AU6892696A AU68926/96A AU6892696A AU6892696A AU 6892696 A AU6892696 A AU 6892696A AU 68926/96 A AU68926/96 A AU 68926/96A AU 6892696 A AU6892696 A AU 6892696A AU 6892696 A AU6892696 A AU 6892696A
Authority
AU
Australia
Prior art keywords
metals
bleaching process
pulp bleaching
preventing accumulation
closed pulp
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.)
Abandoned
Application number
AU68926/96A
Inventor
Ulf Germgard
Jonas Lindquist
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.)
Valmet AB
Original Assignee
Sunds Defibrator Industries AB
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 Sunds Defibrator Industries AB filed Critical Sunds Defibrator Industries AB
Publication of AU6892696A publication Critical patent/AU6892696A/en
Abandoned legal-status Critical Current

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
    • 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
    • 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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
AU68926/96A 1995-08-30 1996-08-09 Method for preventing accumulation of metals in a closed pulp bleaching process Abandoned AU6892696A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9503004 1995-08-30
SE9503004A SE9503004L (en) 1995-08-30 1995-08-30 Bleaching of pulp
PCT/SE1996/000997 WO1997008381A1 (en) 1995-08-30 1996-08-09 Method for preventing accumulation of metals in a closed pulp bleaching process

Publications (1)

Publication Number Publication Date
AU6892696A true AU6892696A (en) 1997-03-19

Family

ID=20399329

Family Applications (1)

Application Number Title Priority Date Filing Date
AU68926/96A Abandoned AU6892696A (en) 1995-08-30 1996-08-09 Method for preventing accumulation of metals in a closed pulp bleaching process

Country Status (7)

Country Link
EP (1) EP0847460A1 (en)
AU (1) AU6892696A (en)
BR (1) BR9610198A (en)
CA (1) CA2229893A1 (en)
NO (1) NO980872D0 (en)
SE (1) SE9503004L (en)
WO (1) WO1997008381A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE509444C2 (en) * 1997-05-14 1999-01-25 Mo Och Domsjoe Ab Procedure for Minimizing Calcium Caused Incrustation Problems in Preparation of Bleached Cellulose Pulp
SE511794C2 (en) * 1997-06-30 1999-11-29 Sunds Defibrator Ind Ab Ways to reduce the content of calcium in the liquid phase in a pulp suspension
AU5657098A (en) * 1997-11-25 1999-06-15 Amylum Belgium N.V. Improvements to the bleaching process for chemical pulp and intermediate pulp dispersions
FI117337B (en) * 2004-12-16 2006-09-15 Kemira Oyj A method for removing manganese from water

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9301160L (en) * 1992-08-28 1994-03-01 Sunds Defibrator Ind Ab Process for treating process water
RU2097463C1 (en) * 1992-11-27 1997-11-27 Ека Нобель Актиеболаг Method of bleaching of delignification lignocellulose-containing pulp
US5554259A (en) * 1993-10-01 1996-09-10 Union Camp Patent Holdings, Inc. Reduction of salt scale precipitation by control of process stream Ph and salt concentration

Also Published As

Publication number Publication date
NO980872L (en) 1998-02-27
CA2229893A1 (en) 1997-03-06
EP0847460A1 (en) 1998-06-17
BR9610198A (en) 1999-06-29
SE9503004L (en) 1997-03-01
SE9503004D0 (en) 1995-08-30
NO980872D0 (en) 1998-02-27
WO1997008381A1 (en) 1997-03-06

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