CA2037678A1 - Procede de preparation de pates a haut rendement blanchies - Google Patents

Procede de preparation de pates a haut rendement blanchies

Info

Publication number
CA2037678A1
CA2037678A1 CA2037678A CA2037678A CA2037678A1 CA 2037678 A1 CA2037678 A1 CA 2037678A1 CA 2037678 A CA2037678 A CA 2037678A CA 2037678 A CA2037678 A CA 2037678A CA 2037678 A1 CA2037678 A1 CA 2037678A1
Authority
CA
Canada
Prior art keywords
alkaline medium
sulfite
high yield
washing
reducing agent
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.)
Granted
Application number
CA2037678A
Other languages
English (en)
Other versions
CA2037678C (fr
Inventor
Michel Devic
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.)
Arkema France 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=9394633&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2037678(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 CA2037678A1 publication Critical patent/CA2037678A1/fr
Application granted granted Critical
Publication of CA2037678C publication Critical patent/CA2037678C/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
    • D21C9/1057—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
    • D21C9/1084—Bleaching ; Apparatus therefor with reducing compounds
    • 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)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Noodles (AREA)
  • Glass Compositions (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Detergent Compositions (AREA)

Abstract

L'invention concerne un procédé de fabrication de pâtes à haut rendement blanchies à l'aide de peroxyde d'hydrogène en milieu alcalin, consistant à soumettre la pâte à blanchir successivement â un prétraitement à l'aide d'un agent séquestrant des ions métalliques suivi d'in lavage, à un traitement par le sulfite et un agent réducteur plus électronégatif que l'ion sulfite qui agissent conjointement et en milieu de pH initial compris entre 7 et 12,5, suivi d'un lavage pour éliminer les ions sulfite et l'agent réducteur, et à un traitement de blanchiment à
l'aide de peroxyde d'hydrogène en milieu alcalin en présence d'une guantité de silicate comprise entre 0% et 1%. Ce procédé permet de ne conserver qu'une étape de blanchiment à
l'aide du peroxyde d'hydrogène en milieu alcalin, de supprimer les inconvénients dus au silicate de sodium, de ne pas grever l'économie de l'opération, tout en assurant à la pâte blanchie un degré de blanc et des qualités mécaniques élevées.
CA002037678A 1990-03-07 1991-03-06 Procede de preparation de pates a haut rendement blanchies Expired - Fee Related CA2037678C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9003128 1990-03-07
FR9003128A FR2659363B1 (fr) 1990-03-07 1990-03-07 Procede de preparation de pates a haut rendement blanchies.

Publications (2)

Publication Number Publication Date
CA2037678A1 true CA2037678A1 (fr) 1991-09-08
CA2037678C CA2037678C (fr) 1999-11-16

Family

ID=9394633

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002037678A Expired - Fee Related CA2037678C (fr) 1990-03-07 1991-03-06 Procede de preparation de pates a haut rendement blanchies

Country Status (13)

Country Link
US (1) US5143581A (fr)
EP (1) EP0446110B1 (fr)
JP (1) JPH0660474B2 (fr)
AT (1) ATE125013T1 (fr)
AU (1) AU641478B2 (fr)
CA (1) CA2037678C (fr)
DE (1) DE69111098T2 (fr)
ES (1) ES2074670T3 (fr)
FI (1) FI98840C (fr)
FR (1) FR2659363B1 (fr)
NO (1) NO178899C (fr)
NZ (1) NZ237310A (fr)
PT (1) PT96951B (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2639371B1 (fr) * 1988-11-24 1995-04-14 Atochem Procede de blanchiment de pates desencrees
BE1004630A3 (fr) * 1990-10-17 1992-12-22 Interox Internat Sa Procede pour la preservation des caracteristiques de resistance mecanique des pates a papier chimiques.
FR2675518B1 (fr) * 1991-04-17 1996-10-18 Atochem Procede de preparation de pate a papier a haut rendement et blanchie, a partir de copeaux de bois.
US6398908B1 (en) 1991-04-30 2002-06-04 Eka Nobel Ab Process for acid bleaching of lignocellulose-containing pulp with a magnesium compound
SE502667C2 (sv) * 1993-07-12 1995-12-04 Kvaerner Pulping Tech Behandling av fibermaterial med komplexbildare före kokning
AU1357097A (en) * 1996-02-27 1997-09-16 Tetra Laval Holdings & Finance Sa Process for sanitizing post-consumer paper fibers and product formed therefrom
DE10064131C2 (de) * 2000-12-22 2003-03-27 Sca Hygiene Prod Gmbh Vollgebleichter Sulfit-Zellstoff, Verfahren zu seiner Herstellung und daraus hergestellte Produkte
US7297225B2 (en) * 2004-06-22 2007-11-20 Georgia-Pacific Consumer Products Lp Process for high temperature peroxide bleaching of pulp with cool discharge
US8138106B2 (en) 2005-09-30 2012-03-20 Rayonier Trs Holdings Inc. Cellulosic fibers with odor control characteristics
US11591751B2 (en) * 2019-09-17 2023-02-28 Gpcp Ip Holdings Llc High efficiency fiber bleaching process
US12286751B2 (en) 2021-01-06 2025-04-29 Gpcp Ip Holdings Llc Oxygen treatment of high kappa fibers
US12435469B2 (en) 2022-02-22 2025-10-07 Gpcp Ip Holdings Llc High yield chemical pulping and bleaching process

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2604197B1 (fr) * 1986-09-23 1988-11-18 Atochem Procede de blanchiment de matieres lignocellulosiques.
FR2613388B1 (fr) * 1987-04-02 1990-05-04 Atochem Procede de blanchiment de pates
FR2615874B1 (fr) * 1987-05-25 1992-02-21 Atochem Procede de preparation de pates chimicothermomecaniques
JPH0197291A (ja) * 1987-10-05 1989-04-14 Fmc Corp 機械パルプの漂白方法
JPH0677245B2 (ja) * 1988-08-11 1994-09-28 株式会社日立製作所 キャッシュ制御方法および情報処理システム
BR112014023535B1 (pt) 2012-03-26 2022-06-14 Koninklijke Philips N.V Codificador de imagem para codificar uma imagem de uma cena de alto alcance dinâmico, decodificador de imagem para decodificar uma representação de imagem codificada de uma cena de alto alcance dinâmico, método de codificação de imagem para codificar uma imagem de uma cena de alto alcance dinâmico e método de decodificação da imagem para decodificar uma representação de imagem codificada de uma cena de alto alcance dinâmico

Also Published As

Publication number Publication date
FR2659363A1 (fr) 1991-09-13
CA2037678C (fr) 1999-11-16
EP0446110A1 (fr) 1991-09-11
FI98840B (fi) 1997-05-15
NO178899B (no) 1996-03-18
NZ237310A (en) 1993-07-27
NO910865L (no) 1991-09-09
JPH0660474B2 (ja) 1994-08-10
FI98840C (fi) 1997-08-25
FR2659363B1 (fr) 1996-04-19
PT96951B (pt) 1998-10-30
DE69111098D1 (de) 1995-08-17
DE69111098T2 (de) 1995-11-23
FI911118A0 (fi) 1991-03-06
EP0446110B1 (fr) 1995-07-12
ES2074670T3 (es) 1995-09-16
AU641478B2 (en) 1993-09-23
PT96951A (pt) 1991-10-31
AU7266891A (en) 1991-09-12
NO910865D0 (no) 1991-03-05
JPH04214491A (ja) 1992-08-05
NO178899C (no) 1996-06-26
US5143581A (en) 1992-09-01
FI911118L (fi) 1991-09-08
ATE125013T1 (de) 1995-07-15

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