ATE198916T1 - Zellstoffbehandlung mit einem komplexbildner in mindestens zwei mischungstufen ohne zwischenwäsche - Google Patents

Zellstoffbehandlung mit einem komplexbildner in mindestens zwei mischungstufen ohne zwischenwäsche

Info

Publication number
ATE198916T1
ATE198916T1 AT96928765T AT96928765T ATE198916T1 AT E198916 T1 ATE198916 T1 AT E198916T1 AT 96928765 T AT96928765 T AT 96928765T AT 96928765 T AT96928765 T AT 96928765T AT E198916 T1 ATE198916 T1 AT E198916T1
Authority
AT
Austria
Prior art keywords
forming agent
intermediate washing
complex forming
mixing stages
pulp
Prior art date
Application number
AT96928765T
Other languages
German (de)
English (en)
Inventor
Ulf Germgard
Jonas Lindquist
Original Assignee
Valmet Fibertech 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20399294&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE198916(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Valmet Fibertech Ab filed Critical Valmet Fibertech Ab
Application granted granted Critical
Publication of ATE198916T1 publication Critical patent/ATE198916T1/de

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
    • D21C9/1042—Use of chelating agents

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Cosmetics (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Detergent Compositions (AREA)
AT96928765T 1995-08-24 1996-08-09 Zellstoffbehandlung mit einem komplexbildner in mindestens zwei mischungstufen ohne zwischenwäsche ATE198916T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9502962A SE504803C2 (sv) 1995-08-24 1995-08-24 Behandling av massa med komplexbildare i minst två blandningssteg utan mellanliggande tvätt
PCT/SE1996/000996 WO1997008380A1 (en) 1995-08-24 1996-08-09 Treatment of pulp with chelating agent in at least two mixing steps without intermediate washing

Publications (1)

Publication Number Publication Date
ATE198916T1 true ATE198916T1 (de) 2001-02-15

Family

ID=20399294

Family Applications (1)

Application Number Title Priority Date Filing Date
AT96928765T ATE198916T1 (de) 1995-08-24 1996-08-09 Zellstoffbehandlung mit einem komplexbildner in mindestens zwei mischungstufen ohne zwischenwäsche

Country Status (11)

Country Link
EP (1) EP0846199B1 (sv)
AT (1) ATE198916T1 (sv)
AU (1) AU6839996A (sv)
BR (1) BR9610199A (sv)
CA (1) CA2229212A1 (sv)
DE (1) DE69611680T2 (sv)
ES (1) ES2153593T3 (sv)
NO (1) NO980753L (sv)
PT (1) PT846199E (sv)
SE (1) SE504803C2 (sv)
WO (1) WO1997008380A1 (sv)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE508239C2 (sv) * 1997-01-03 1998-09-21 Sunds Defibrator Ind Ab Behandling av massa med komplexbildare i minst ett blandningssteg, utan användning av blektorn
WO2009154898A1 (en) 2008-06-20 2009-12-23 International Paper Company Composition and recording sheet with improved optical properties

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE97179T1 (de) * 1989-06-06 1993-11-15 Eka Nobel Ab Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen.
SE9201477L (sv) * 1992-05-11 1993-06-28 Kamyr Ab Saett vid blekning av massa utan anvaendning av klorkemikalier
SE502665C2 (sv) * 1993-06-11 1995-12-04 Kvaerner Pulping Tech Sätt och reaktor för ozonblekning
SE501836C2 (sv) * 1993-09-21 1995-05-22 Sunds Defibrator Ind Ab Blekning av kemisk massa varvid massan behandlas med komplexbildare före och efter ett ozonsteg

Also Published As

Publication number Publication date
CA2229212A1 (en) 1997-03-06
SE504803C2 (sv) 1997-04-28
NO980753D0 (no) 1998-02-23
WO1997008380A1 (en) 1997-03-06
DE69611680D1 (de) 2001-03-01
SE9502962L (sv) 1997-02-25
EP0846199A1 (en) 1998-06-10
AU6839996A (en) 1997-03-19
DE69611680T2 (de) 2001-05-10
NO980753L (no) 1998-02-24
PT846199E (pt) 2001-06-29
EP0846199B1 (en) 2001-01-24
SE9502962D0 (sv) 1995-08-24
ES2153593T3 (es) 2001-03-01
BR9610199A (pt) 1998-08-04

Similar Documents

Publication Publication Date Title
CA2017807A1 (en) Process for bleaching lignocellulose-containing pulps
AU548277B2 (en) Washing cellulose pulps
MY132667A (en) Process for the bleaching of pulp
ATE198916T1 (de) Zellstoffbehandlung mit einem komplexbildner in mindestens zwei mischungstufen ohne zwischenwäsche
SE0301773D0 (sv) Alkaline extraction stages comprising xylanase
DE69009750D1 (de) Bleichverfahren zur herstellung von hochweissem zellstoff.
DE69304342D1 (de) Verfahren zum bleichen von lignocellulose-enthaltendem zellstoff
ES2185715T3 (es) Blanqueo de pasta papelera.
ATE241725T1 (de) Zellstoffbehandlung mit einem komplexbildner ohne verwendung eines bleichturms
SE501253E8 (sv) Klorfri blekning av kemisk pappersmassa
SE9501623L (sv) Blekning av massa
SE9302527D0 (sv) Saett vid flerstegsblekning
SE9500926D0 (sv) Förfarande för blekning av massa
RU96124423A (ru) Способ отбелки целлюлозы
TH23106B (th) วิธีสำหรับการผลิตคาร์บอนแกลบว่องไว

Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee