EP0446110B1 - Procédé de préparation de pâtes à haut rendement blanchies - Google Patents

Procédé de préparation de pâtes à haut rendement blanchies Download PDF

Info

Publication number
EP0446110B1
EP0446110B1 EP91400567A EP91400567A EP0446110B1 EP 0446110 B1 EP0446110 B1 EP 0446110B1 EP 91400567 A EP91400567 A EP 91400567A EP 91400567 A EP91400567 A EP 91400567A EP 0446110 B1 EP0446110 B1 EP 0446110B1
Authority
EP
European Patent Office
Prior art keywords
sulphite
sodium
process according
reducing agent
aid
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 - Lifetime
Application number
EP91400567A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0446110A1 (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
Elf Atochem 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=EP0446110(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Elf Atochem SA filed Critical Elf Atochem SA
Publication of EP0446110A1 publication Critical patent/EP0446110A1/fr
Application granted granted Critical
Publication of EP0446110B1 publication Critical patent/EP0446110B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Definitions

  • High-yield pulps are produced by subjecting the starting lignocellulosic material, such as wood in the form of chips, to an adion of the mechanical type, combined or not with actions of the chemical and thermal type.
  • the bleached pulp obtained has a white degree equal to 84.7%.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Glass Compositions (AREA)
  • Noodles (AREA)
  • Detergent Compositions (AREA)
EP91400567A 1990-03-07 1991-03-01 Procédé de préparation de pâtes à haut rendement blanchies Expired - Lifetime EP0446110B1 (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
EP0446110A1 EP0446110A1 (fr) 1991-09-11
EP0446110B1 true EP0446110B1 (fr) 1995-07-12

Family

ID=9394633

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91400567A Expired - Lifetime EP0446110B1 (fr) 1990-03-07 1991-03-01 Procédé de préparation de pâtes à haut rendement blanchies

Country Status (13)

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

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
PT96951B (pt) 1998-10-30
EP0446110A1 (fr) 1991-09-11
PT96951A (pt) 1991-10-31
CA2037678A1 (fr) 1991-09-08
ATE125013T1 (de) 1995-07-15
ES2074670T3 (es) 1995-09-16
NO910865D0 (no) 1991-03-05
NO178899B (no) 1996-03-18
FR2659363A1 (fr) 1991-09-13
DE69111098T2 (de) 1995-11-23
CA2037678C (fr) 1999-11-16
FI98840B (sv) 1997-05-15
FR2659363B1 (fr) 1996-04-19
FI911118A (sv) 1991-09-08
NO910865L (no) 1991-09-09
NZ237310A (en) 1993-07-27
AU641478B2 (en) 1993-09-23
DE69111098D1 (de) 1995-08-17
US5143581A (en) 1992-09-01
NO178899C (no) 1996-06-26
FI98840C (sv) 1997-08-25
JPH0660474B2 (ja) 1994-08-10
AU7266891A (en) 1991-09-12
JPH04214491A (ja) 1992-08-05
FI911118A0 (sv) 1991-03-06

Similar Documents

Publication Publication Date Title
EP0446110B1 (fr) Procédé de préparation de pâtes à haut rendement blanchies
CA1206704A (fr) Procede pour le traitement de pates papetieres chimiques
CA2003587C (fr) Procede de blanchiment de pates desencrees
EP0263040B1 (fr) Procédé de blanchiment de matières lignocellulosiques
CA2066316C (fr) Procede de preparation de pate a papier a haut rendement et blanchie
EP0285530B1 (fr) Procédé de blanchiment de pâtes
EP0514609B1 (fr) Procédé de blanchiment au peroxyde d'hydrogène de pâtes à papier à haut rendement
CA2041388C (fr) Procede de blanchiment au peroxyde d'hydrogene de pates a papier a haut rendement
FR2910027A1 (fr) Procede de blanchiment des pates papeteries chimiques par traitement final a l'ozone a haute temperature
EP0293309B1 (fr) Procédé de préparation de pâtes chimicothermomécaniques
EP3008240B1 (fr) Procede de traitement des pates papetieres chimiques par traitement a l'ozone en presence d'ions magnesium
EP0351330B1 (fr) Procédé de fabrication de pâtes chimicothermomécaniques blanchies
EP0575374A1 (fr) Procede pour le blanchiment d'une pate a papier chimique et application de ce procede au blanchiment d'une pate kraft
FR2622221A1 (fr) Procede de blanchiment de pates
FR2593527A1 (fr) Procede de blanchiment des pates mecaniques.
BE1005800A3 (fr) Procede pour la delignification et le blanchiment d'une pate a papier chimique.
BE1010880A3 (fr) Procede de fabrication de pate a papier chimique.
BE1011129A4 (fr) Procede continu de delignification et/ou de blanchiment de pate a papier chimique vierge ou recyclee.
BE656601A (sv)
CH161573A (fr) Procédé de blanchiment.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19910306

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE DE ES FR GB IT SE

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ELF ATOCHEM S.A.

17Q First examination report despatched

Effective date: 19931208

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE ES FR GB IT SE

REF Corresponds to:

Ref document number: 125013

Country of ref document: AT

Date of ref document: 19950715

Kind code of ref document: T

REF Corresponds to:

Ref document number: 69111098

Country of ref document: DE

Date of ref document: 19950817

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2074670

Country of ref document: ES

Kind code of ref document: T3

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19950915

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

26 Opposition filed

Opponent name: SOLVAY (SOCIETE ANONYME)

Effective date: 19960409

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBO Opposition rejected

Free format text: ORIGINAL CODE: EPIDOS REJO

PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 19980115

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20010221

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20010228

Year of fee payment: 11

Ref country code: ES

Payment date: 20010228

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20010306

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20010313

Year of fee payment: 11

Ref country code: AT

Payment date: 20010313

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20010420

Year of fee payment: 11

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020301

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020302

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020302

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020331

BERE Be: lapsed

Owner name: S.A. *ELF ATOCHEM

Effective date: 20020331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021001

EUG Se: european patent has lapsed

Ref document number: 91400567.3

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20020301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021129

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20030410

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050301