ATE141972T1 - Verfahren zum bleichen von lignocellulose- enthaltendem zellstoff - Google Patents

Verfahren zum bleichen von lignocellulose- enthaltendem zellstoff

Info

Publication number
ATE141972T1
ATE141972T1 AT94901142T AT94901142T ATE141972T1 AT E141972 T1 ATE141972 T1 AT E141972T1 AT 94901142 T AT94901142 T AT 94901142T AT 94901142 T AT94901142 T AT 94901142T AT E141972 T1 ATE141972 T1 AT E141972T1
Authority
AT
Austria
Prior art keywords
pulp
bleaching
brightness
stages
lignocellulose
Prior art date
Application number
AT94901142T
Other languages
German (de)
English (en)
Inventor
Magnus Linsten
Jiri Basta
Ann-Sofie Haellstroem
Original Assignee
Eka Chemicals 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=26661599&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE141972(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from SE9203584A external-priority patent/SE9203584D0/xx
Priority claimed from SE9300225A external-priority patent/SE9300225D0/xx
Application filed by Eka Chemicals Ab filed Critical Eka Chemicals Ab
Application granted granted Critical
Publication of ATE141972T1 publication Critical patent/ATE141972T1/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
    • 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)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
AT94901142T 1992-11-27 1993-11-25 Verfahren zum bleichen von lignocellulose- enthaltendem zellstoff ATE141972T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9203584A SE9203584D0 (sv) 1992-11-27 1992-11-27 Foerfarande foer blekning av lignocellulosahaltig massa
SE9300225A SE9300225D0 (sv) 1993-01-26 1993-01-26 Foerfarande foer blekning av lignocellulosahaltig massa

Publications (1)

Publication Number Publication Date
ATE141972T1 true ATE141972T1 (de) 1996-09-15

Family

ID=26661599

Family Applications (1)

Application Number Title Priority Date Filing Date
AT94901142T ATE141972T1 (de) 1992-11-27 1993-11-25 Verfahren zum bleichen von lignocellulose- enthaltendem zellstoff

Country Status (16)

Country Link
EP (1) EP0670929B2 (ja)
JP (1) JPH08503749A (ja)
AT (1) ATE141972T1 (ja)
AU (1) AU671337B2 (ja)
BR (1) BR9307520A (ja)
CA (1) CA2149649C (ja)
CZ (1) CZ285246B6 (ja)
DE (1) DE69304342T3 (ja)
ES (1) ES2091121T3 (ja)
FI (1) FI118572B (ja)
MX (1) MX9307413A (ja)
NO (1) NO306737B1 (ja)
NZ (1) NZ258273A (ja)
PL (1) PL309190A1 (ja)
RU (1) RU2097463C1 (ja)
WO (1) WO1994012722A1 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1007757A3 (fr) * 1993-11-10 1995-10-17 Solvay Interox Procede pour le blanchiment d'une pate a papier chimique.
US5656130A (en) * 1995-04-28 1997-08-12 Union Camp Holding, Inc. Ambient temperature pulp bleaching with peroxyacid salts
USH1690H (en) * 1995-07-20 1997-11-04 Nye; Jeffrey Process for bleaching kraft pulp
SE9503004L (sv) * 1995-08-30 1997-03-01 Sunds Defibrator Ind Ab Blekning av massa
DE19704054C2 (de) * 1997-02-04 2000-08-10 Stockhausen Chem Fab Gmbh Verfahren zur Herstellung von Faserstoffen mit verbesserten Eigenschaften
US6702921B2 (en) * 2001-05-01 2004-03-09 Ondeo Nalco Company Methods to enhance pulp bleaching and delignification using an organic sulfide chelating agent
PL1607519T3 (pl) * 2004-06-14 2008-07-31 Warwick International Group Ltd Aktywator bielenia ścieru

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2219505C3 (de) † 1972-04-21 1974-10-17 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt Chlorfreie Mehrstufenbleiche von Zellstoff
DE3005947B1 (de) † 1980-02-16 1981-01-29 Degussa Verfahren zur Bleiche von Zellstoffen mittels organischer Persaeure
JPS5721591A (en) † 1980-07-11 1982-02-04 Mitsubishi Gas Chemical Co Peroxide bleaching of wood pulp
DE402335T1 (de) * 1989-06-06 1992-04-09 Eka Nobel Ab, Surte Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen.
US5091054A (en) * 1989-08-18 1992-02-25 Degussa Corporation Process for bleaching and delignification of lignocellulosic
BE1004674A3 (fr) * 1991-03-11 1993-01-12 Interox Internat Sa Procede pour le blanchiment d'une pate a papier chimique et application de ce procede au blanchiment d'une pate kraft.
DE4114135A1 (de) † 1991-04-30 1992-11-05 Sueddeutsche Kalkstickstoff Verfahren zur chlorfreien bleiche und delignifizierung von alkalizellstoff
ATE168149T1 (de) * 1991-10-04 1998-07-15 Solvay Interox Inc Verfahren zur verbesserung der selektivität bei der delignifizierung von chemischem zellstoff
BE1006057A3 (fr) † 1992-07-06 1994-05-03 Solvay Interox Procede pour la delignification d'une pate a papier chimique.

Also Published As

Publication number Publication date
PL309190A1 (en) 1995-09-18
DE69304342D1 (de) 1996-10-02
CA2149649C (en) 2000-09-19
WO1994012722A1 (en) 1994-06-09
ES2091121T3 (es) 1996-10-16
FI118572B (fi) 2007-12-31
AU5583194A (en) 1994-06-22
NO306737B1 (no) 1999-12-13
FI952551A (fi) 1995-05-24
DE69304342T3 (de) 2004-07-01
RU95113460A (ru) 1996-12-27
JPH08503749A (ja) 1996-04-23
BR9307520A (pt) 1999-08-31
DE69304342T2 (de) 1997-03-06
NO952074L (no) 1995-07-26
AU671337B2 (en) 1996-08-22
EP0670929B1 (en) 1996-08-28
FI952551A0 (fi) 1995-05-24
NZ258273A (en) 1996-08-27
MX9307413A (es) 1994-07-29
EP0670929B2 (en) 2003-10-22
EP0670929A1 (en) 1995-09-13
RU2097463C1 (ru) 1997-11-27
NO952074D0 (no) 1995-05-26
CZ132895A3 (en) 1996-01-17
CZ285246B6 (cs) 1999-06-16

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Legal Events

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