ATE125013T1 - Verfahren zur herstellung von gebleichtem zellstoff mit hoher ausbeute. - Google Patents

Verfahren zur herstellung von gebleichtem zellstoff mit hoher ausbeute.

Info

Publication number
ATE125013T1
ATE125013T1 AT91400567T AT91400567T ATE125013T1 AT E125013 T1 ATE125013 T1 AT E125013T1 AT 91400567 T AT91400567 T AT 91400567T AT 91400567 T AT91400567 T AT 91400567T AT E125013 T1 ATE125013 T1 AT E125013T1
Authority
AT
Austria
Prior art keywords
aid
high yield
sulphite
producing high
bleached pulp
Prior art date
Application number
AT91400567T
Other languages
English (en)
Inventor
Michel Devic
Original Assignee
Atochem Elf Sa
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=ATE125013(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Atochem Elf Sa filed Critical Atochem Elf Sa
Application granted granted Critical
Publication of ATE125013T1 publication Critical patent/ATE125013T1/de

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
AT91400567T 1990-03-07 1991-03-01 Verfahren zur herstellung von gebleichtem zellstoff mit hoher ausbeute. ATE125013T1 (de)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
ATE125013T1 true ATE125013T1 (de) 1995-07-15

Family

ID=9394633

Family Applications (1)

Application Number Title Priority Date Filing Date
AT91400567T ATE125013T1 (de) 1990-03-07 1991-03-01 Verfahren zur herstellung von gebleichtem zellstoff mit hoher ausbeute.

Country Status (13)

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

Families Citing this family (10)

* 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

Family Cites Families (5)

* 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

Also Published As

Publication number Publication date
FR2659363B1 (fr) 1996-04-19
FI98840C (fi) 1997-08-25
FI98840B (fi) 1997-05-15
NO178899B (no) 1996-03-18
DE69111098T2 (de) 1995-11-23
JPH04214491A (ja) 1992-08-05
US5143581A (en) 1992-09-01
EP0446110A1 (de) 1991-09-11
FI911118A0 (fi) 1991-03-06
CA2037678A1 (fr) 1991-09-08
FR2659363A1 (fr) 1991-09-13
ES2074670T3 (es) 1995-09-16
AU7266891A (en) 1991-09-12
EP0446110B1 (de) 1995-07-12
NO910865L (no) 1991-09-09
PT96951B (pt) 1998-10-30
CA2037678C (fr) 1999-11-16
NZ237310A (en) 1993-07-27
NO910865D0 (no) 1991-03-05
AU641478B2 (en) 1993-09-23
DE69111098D1 (de) 1995-08-17
FI911118A (fi) 1991-09-08
JPH0660474B2 (ja) 1994-08-10
NO178899C (no) 1996-06-26
PT96951A (pt) 1991-10-31

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee