BE1007700A3 - Procede pour le blanchiment d'une pate a papier chimique. - Google Patents

Procede pour le blanchiment d'une pate a papier chimique. Download PDF

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Publication number
BE1007700A3
BE1007700A3 BE9301215A BE9301215A BE1007700A3 BE 1007700 A3 BE1007700 A3 BE 1007700A3 BE 9301215 A BE9301215 A BE 9301215A BE 9301215 A BE9301215 A BE 9301215A BE 1007700 A3 BE1007700 A3 BE 1007700A3
Authority
BE
Belgium
Prior art keywords
sep
sequence
acid
steps
dry
Prior art date
Application number
BE9301215A
Other languages
English (en)
French (fr)
Original Assignee
Solvay Interox
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=3887524&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BE1007700(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Solvay Interox filed Critical Solvay Interox
Priority to BE9301215A priority Critical patent/BE1007700A3/fr
Priority to EP94931026A priority patent/EP0726979B1/fr
Priority to NZ274852A priority patent/NZ274852A/en
Priority to BR9407976A priority patent/BR9407976A/pt
Priority to CA002175817A priority patent/CA2175817A1/fr
Priority to AT94931026T priority patent/ATE166118T1/de
Priority to ES94931026T priority patent/ES2119234T3/es
Priority to AU79940/94A priority patent/AU7994094A/en
Priority to DE69410286T priority patent/DE69410286T2/de
Priority to JP7513015A priority patent/JPH09507096A/ja
Priority to PCT/EP1994/003591 priority patent/WO1995012709A1/fr
Priority to ZA948562A priority patent/ZA948562B/xx
Priority to MA23689A priority patent/MA23365A1/fr
Publication of BE1007700A3 publication Critical patent/BE1007700A3/fr
Application granted granted Critical
Priority to FI961895A priority patent/FI961895A0/fi
Priority to NO961817A priority patent/NO961817L/no

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
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
    • 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
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
BE9301215A 1993-11-04 1993-11-04 Procede pour le blanchiment d'une pate a papier chimique. BE1007700A3 (fr)

Priority Applications (15)

Application Number Priority Date Filing Date Title
BE9301215A BE1007700A3 (fr) 1993-11-04 1993-11-04 Procede pour le blanchiment d'une pate a papier chimique.
ES94931026T ES2119234T3 (es) 1993-11-04 1994-10-28 Procedimiento para el blanqueo de una pasta papelera quimica.
DE69410286T DE69410286T2 (de) 1993-11-04 1994-10-28 Verfahren zum bleichen von zellstoff
BR9407976A BR9407976A (pt) 1993-11-04 1994-10-28 Processo para o branqueamento de uma pasta de papel química
CA002175817A CA2175817A1 (fr) 1993-11-04 1994-10-28 Procede pour le blanchiment d'une pate a papier chimique
AT94931026T ATE166118T1 (de) 1993-11-04 1994-10-28 Verfahren zum bleichen von zellstoff
EP94931026A EP0726979B1 (fr) 1993-11-04 1994-10-28 Procede pour le blanchiment d'une pate a papier chimique
AU79940/94A AU7994094A (en) 1993-11-04 1994-10-28 Process for bleaching a chemical pulp
NZ274852A NZ274852A (en) 1993-11-04 1994-10-28 Pulp bleaching process comprising steps qpa in that order (ie decontamination, alkaline hydrogen peroxide bleaching, non peroxygenated acid)
JP7513015A JPH09507096A (ja) 1993-11-04 1994-10-28 化学ペーパーパルプの漂白方法
PCT/EP1994/003591 WO1995012709A1 (fr) 1993-11-04 1994-10-28 Procede pour le blanchiment d'une pate a papier chimique
ZA948562A ZA948562B (en) 1993-11-04 1994-10-31 Process for bleaching a chemical paper pulp
MA23689A MA23365A1 (fr) 1993-11-04 1994-11-04 Procede pour le blanchiment d'une pate a papier chimique
FI961895A FI961895A0 (fi) 1993-11-04 1996-05-03 Menetelmä kemiallisen paperimassan valkaisemiseksi
NO961817A NO961817L (no) 1993-11-04 1996-05-03 Fremgangsmåte for bleking av kjemisk masse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE9301215A BE1007700A3 (fr) 1993-11-04 1993-11-04 Procede pour le blanchiment d'une pate a papier chimique.

Publications (1)

Publication Number Publication Date
BE1007700A3 true BE1007700A3 (fr) 1995-10-03

Family

ID=3887524

Family Applications (1)

Application Number Title Priority Date Filing Date
BE9301215A BE1007700A3 (fr) 1993-11-04 1993-11-04 Procede pour le blanchiment d'une pate a papier chimique.

Country Status (15)

Country Link
EP (1) EP0726979B1 (fi)
JP (1) JPH09507096A (fi)
AT (1) ATE166118T1 (fi)
AU (1) AU7994094A (fi)
BE (1) BE1007700A3 (fi)
BR (1) BR9407976A (fi)
CA (1) CA2175817A1 (fi)
DE (1) DE69410286T2 (fi)
ES (1) ES2119234T3 (fi)
FI (1) FI961895A0 (fi)
MA (1) MA23365A1 (fi)
NO (1) NO961817L (fi)
NZ (1) NZ274852A (fi)
WO (1) WO1995012709A1 (fi)
ZA (1) ZA948562B (fi)

Families Citing this family (2)

* 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.
FI105701B (fi) * 1995-10-20 2000-09-29 Ahlstrom Machinery Oy Menetelmä ja laitteisto massan käsittelemiseksi

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0208625A1 (fr) * 1985-05-29 1987-01-14 Elf Atochem S.A. Traitement de pâtes papetières chimiques par le peroxyde d'hydrogène en vue de leur blanchiment
EP0402335A2 (en) * 1989-06-06 1990-12-12 Eka Nobel Ab Process for bleaching lignocellulose-containing pulps
EP0433138A1 (fr) * 1989-12-11 1991-06-19 La Cellulose Du Pin Procédé de blanchiment de pâtes cellulosiques chimiques

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0208625A1 (fr) * 1985-05-29 1987-01-14 Elf Atochem S.A. Traitement de pâtes papetières chimiques par le peroxyde d'hydrogène en vue de leur blanchiment
EP0402335A2 (en) * 1989-06-06 1990-12-12 Eka Nobel Ab Process for bleaching lignocellulose-containing pulps
EP0433138A1 (fr) * 1989-12-11 1991-06-19 La Cellulose Du Pin Procédé de blanchiment de pâtes cellulosiques chimiques

Also Published As

Publication number Publication date
NO961817D0 (no) 1996-05-03
MA23365A1 (fr) 1995-07-01
WO1995012709A1 (fr) 1995-05-11
BR9407976A (pt) 1996-12-03
CA2175817A1 (fr) 1995-05-11
NO961817L (no) 1996-05-03
ATE166118T1 (de) 1998-05-15
AU7994094A (en) 1995-05-23
JPH09507096A (ja) 1997-07-15
FI961895A (fi) 1996-05-03
NZ274852A (en) 1997-04-24
ES2119234T3 (es) 1998-10-01
DE69410286D1 (de) 1998-06-18
FI961895A0 (fi) 1996-05-03
EP0726979A1 (fr) 1996-08-21
ZA948562B (en) 1995-06-30
DE69410286T2 (de) 1998-12-10
EP0726979B1 (fr) 1998-05-13

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: S.A. SOLVAY INTEROX

Effective date: 20011130