CA2175817A1 - Procede pour le blanchiment d'une pate a papier chimique - Google Patents

Procede pour le blanchiment d'une pate a papier chimique

Info

Publication number
CA2175817A1
CA2175817A1 CA002175817A CA2175817A CA2175817A1 CA 2175817 A1 CA2175817 A1 CA 2175817A1 CA 002175817 A CA002175817 A CA 002175817A CA 2175817 A CA2175817 A CA 2175817A CA 2175817 A1 CA2175817 A1 CA 2175817A1
Authority
CA
Canada
Prior art keywords
sequence
stage
process according
acid
paste
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.)
Abandoned
Application number
CA002175817A
Other languages
English (en)
French (fr)
Inventor
Francois Desprez
Johan Devenyns
Nicholas A. Troughton
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.)
Solvay Chimie SA
Original Assignee
Individual
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=CA2175817(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of CA2175817A1 publication Critical patent/CA2175817A1/fr
Abandoned 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
    • D21C9/1057—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)
CA002175817A 1993-11-04 1994-10-28 Procede pour le blanchiment d'une pate a papier chimique Abandoned CA2175817A1 (fr)

Applications Claiming Priority (3)

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.
BE9301215 1993-11-04
PCT/EP1994/003591 WO1995012709A1 (fr) 1993-11-04 1994-10-28 Procede pour le blanchiment d'une pate a papier chimique

Publications (1)

Publication Number Publication Date
CA2175817A1 true CA2175817A1 (fr) 1995-05-11

Family

ID=3887524

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002175817A Abandoned CA2175817A1 (fr) 1993-11-04 1994-10-28 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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2582692B1 (fr) * 1985-05-29 1987-12-11 Atochem Traitement de pates papetieres chimiques par le peroxyde d'hydrogene en vue de leur blanchiment
DE69004492T3 (de) * 1989-06-06 2001-11-15 Eka Nobel Ab, Bohus Verfahren zum Bleichen von Lignocellulose enthaltenden Zellstoffen.
FR2655668B1 (fr) * 1989-12-11 1995-06-09 Du Pin Cellulose Procede de blanchiment de pates 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
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
BE1007700A3 (fr) 1995-10-03
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
FZDE Discontinued