CA2149649C - Procede de blanchiment de pate contenant de la lignocellulose - Google Patents

Procede de blanchiment de pate contenant de la lignocellulose Download PDF

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Publication number
CA2149649C
CA2149649C CA002149649A CA2149649A CA2149649C CA 2149649 C CA2149649 C CA 2149649C CA 002149649 A CA002149649 A CA 002149649A CA 2149649 A CA2149649 A CA 2149649A CA 2149649 C CA2149649 C CA 2149649C
Authority
CA
Canada
Prior art keywords
pulp
bleaching
hydrogen peroxide
complexing agent
peracid
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.)
Expired - Fee Related
Application number
CA002149649A
Other languages
English (en)
Inventor
Magnus Linsten
Jiri Basta
Ann-Sofie Hallstrom
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.)
Nouryon Pulp and Performance Chemicals AB
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=CA2149649(C) "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 Nobel AB filed Critical Eka Nobel AB
Application granted granted Critical
Publication of CA2149649C publication Critical patent/CA2149649C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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)

Abstract

La présente invention concerne un procédé pour blanchir la pâte à papier contenant de la lignocellulose, dans lequel la pâte est d'abord traitée avec un agent complexant, puis délignifiée avec un peracide organique ou son sel, et ensuite blanchie avec un composé contenant un peroxyde, un dithionite d'ozone ou de sodium. Avant d'être blanchie, la pâte est lavée à un pH d'au moins 4 environ. La délignification est effectuée de manière adéquate avec l'acide peracétique fortement oxydant de sorte qu'un accroissement important de la brillance ainsi qu'une diminution importante du nombre kappa soient obtenus après le blanchiment. L'effet d'accroissement de la brillance est très sélectif, c'est-à-dire que la viscosité de la pâte est maintenue de manière importante. Grâce à un choix judicieux du pH dans toutes les étapes précédant le blanchiment sans chlore, les ions métalliques utiles sont retenus dans la pâte, et en même temps l'ajustement du pH entre les étapes est minimisé et les liqueurs de blanchiment nécessaires résultantes sont avantageusement utilisées pour le procédé, par exemple pour laver la pâte.
CA002149649A 1992-11-27 1993-11-25 Procede de blanchiment de pate contenant de la lignocellulose Expired - Fee Related CA2149649C (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
SE9203584-9 1992-11-27
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
SE9300225-1 1993-01-26
PCT/SE1993/001018 WO1994012722A1 (fr) 1992-11-27 1993-11-25 Procede pour blanchir la pate a papier contenant de la lignocellulose

Publications (1)

Publication Number Publication Date
CA2149649C true CA2149649C (fr) 2000-09-19

Family

ID=26661599

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002149649A Expired - Fee Related CA2149649C (fr) 1992-11-27 1993-11-25 Procede de blanchiment de pate contenant de la lignocellulose

Country Status (16)

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

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
DE602004011911T9 (de) * 2004-06-14 2009-01-02 Warwick International Group Ltd., Holywell Aktivator zum Zellstoffbleichen

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 (fr) * 1989-06-06 2001-03-14 Eka Chemicals AB Procédé de blanchiment de pâtes contenant de la lignocellulose
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
DE69226143T2 (de) * 1991-10-04 1999-02-25 Solvay Interox, Inc., Wilmington, Del. 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
RU2097463C1 (ru) 1997-11-27
FI952551A0 (fi) 1995-05-24
DE69304342T2 (de) 1997-03-06
EP0670929B2 (fr) 2003-10-22
ES2091121T3 (es) 1996-10-16
PL309190A1 (en) 1995-09-18
AU5583194A (en) 1994-06-22
NO952074D0 (no) 1995-05-26
AU671337B2 (en) 1996-08-22
CZ132895A3 (en) 1996-01-17
RU95113460A (ru) 1996-12-27
NO306737B1 (no) 1999-12-13
EP0670929B1 (fr) 1996-08-28
FI118572B (fi) 2007-12-31
DE69304342D1 (de) 1996-10-02
BR9307520A (pt) 1999-08-31
NO952074L (no) 1995-07-26
MX9307413A (es) 1994-07-29
EP0670929A1 (fr) 1995-09-13
JPH08503749A (ja) 1996-04-23
DE69304342T3 (de) 2004-07-01
CZ285246B6 (cs) 1999-06-16
ATE141972T1 (de) 1996-09-15
NZ258273A (en) 1996-08-27
WO1994012722A1 (fr) 1994-06-09
FI952551A (fi) 1995-05-24

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