FI952551A - Förfarande för blekning av lignocellulosahaltig massa - Google Patents

Förfarande för blekning av lignocellulosahaltig massa Download PDF

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Publication number
FI952551A
FI952551A FI952551A FI952551A FI952551A FI 952551 A FI952551 A FI 952551A FI 952551 A FI952551 A FI 952551A FI 952551 A FI952551 A FI 952551A FI 952551 A FI952551 A FI 952551A
Authority
FI
Finland
Prior art keywords
pulp
bleaching
brightness
stages
lignocellulosic pulp
Prior art date
Application number
FI952551A
Other languages
English (en)
Finnish (fi)
Other versions
FI952551A0 (sv
FI118572B (sv
Inventor
Magnus Linsten
Jiri Basta
Ann-Sofie Haellstroem
Original Assignee
Eka Nobel 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=FI952551(A) "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/sv
Priority claimed from SE9300225A external-priority patent/SE9300225D0/sv
Application filed by Eka Nobel Ab filed Critical Eka Nobel Ab
Publication of FI952551A publication Critical patent/FI952551A/sv
Publication of FI952551A0 publication Critical patent/FI952551A0/sv
Application granted granted Critical
Publication of FI118572B publication Critical patent/FI118572B/sv

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)
FI952551A 1992-11-27 1995-05-24 Förfarande för blekning av lignocellulosahaltig massa FI118572B (sv)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
SE9203584 1992-11-27
SE9203584A SE9203584D0 (sv) 1992-11-27 1992-11-27 Foerfarande foer blekning av lignocellulosahaltig massa
SE9300225 1993-01-26
SE9300225A SE9300225D0 (sv) 1993-01-26 1993-01-26 Foerfarande foer blekning av lignocellulosahaltig massa
SE9301018 1993-03-26
PCT/SE1993/001018 WO1994012722A1 (en) 1992-11-27 1993-11-25 Process for bleaching of lignocellulose-containing pulp

Publications (3)

Publication Number Publication Date
FI952551A true FI952551A (sv) 1995-05-24
FI952551A0 FI952551A0 (sv) 1995-05-24
FI118572B FI118572B (sv) 2007-12-31

Family

ID=26661599

Family Applications (1)

Application Number Title Priority Date Filing Date
FI952551A FI118572B (sv) 1992-11-27 1995-05-24 Förfarande för blekning av lignocellulosahaltig massa

Country Status (16)

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

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
PT1607519E (pt) * 2004-06-14 2008-04-16 Warwick Internat Group Ltd Activador para branqueamento de pasta

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
EP0402335B2 (en) * 1989-06-06 2001-03-14 Eka Chemicals AB Process for bleaching lignocellulose-containing pulps
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
ES2120984T3 (es) * 1991-10-04 1998-11-16 Solvay Interox Inc Un procedimiento para mejorar la selectividad de la deslignificacion de una pasta papelera quimica.
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
EP0670929B1 (en) 1996-08-28
NO952074D0 (no) 1995-05-26
ES2091121T3 (es) 1996-10-16
AU5583194A (en) 1994-06-22
PL309190A1 (en) 1995-09-18
WO1994012722A1 (en) 1994-06-09
RU2097463C1 (ru) 1997-11-27
ATE141972T1 (de) 1996-09-15
DE69304342T3 (de) 2004-07-01
EP0670929B2 (en) 2003-10-22
DE69304342D1 (de) 1996-10-02
NZ258273A (en) 1996-08-27
RU95113460A (ru) 1996-12-27
EP0670929A1 (en) 1995-09-13
FI952551A0 (sv) 1995-05-24
CZ285246B6 (cs) 1999-06-16
CZ132895A3 (en) 1996-01-17
NO306737B1 (no) 1999-12-13
NO952074L (no) 1995-07-26
FI118572B (sv) 2007-12-31
MX9307413A (es) 1994-07-29
JPH08503749A (ja) 1996-04-23
CA2149649C (en) 2000-09-19
AU671337B2 (en) 1996-08-22
BR9307520A (pt) 1999-08-31
DE69304342T2 (de) 1997-03-06

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DE69206313D1 (de) Verfahren zum Bleichen von Lignocellulose enthaltendem Material.
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BR9307521A (pt) Processo para a deslignificação e alvejamento de polpa contendo lignocelulose
NZ237866A (en) Process for delignifying and bleaching cellulose pulp wherein there is a reduced formation and discharge of halogenated organic compounds in the waste liquor; pulp treated with a trace metal complexing agent and then with a peroxide agent
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FI950749A (sv) Förfarande för förbehandling av massa som skall blekas med peroxid

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