ES2102008T3 - Blanqueo de pasta papelera quimica. - Google Patents

Blanqueo de pasta papelera quimica.

Info

Publication number
ES2102008T3
ES2102008T3 ES93902618T ES93902618T ES2102008T3 ES 2102008 T3 ES2102008 T3 ES 2102008T3 ES 93902618 T ES93902618 T ES 93902618T ES 93902618 T ES93902618 T ES 93902618T ES 2102008 T3 ES2102008 T3 ES 2102008T3
Authority
ES
Spain
Prior art keywords
bleaching
pulp
thereafter
consistency
complexing 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.)
Expired - Lifetime
Application number
ES93902618T
Other languages
English (en)
Spanish (es)
Inventor
Lars-Ake Lindstrom
Lars Sjodin
Solveig Norden
Marten Dahl
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.)
Valmet AB
Original Assignee
Sunds Defibrator Industries AB
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=20385065&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2102008(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sunds Defibrator Industries AB filed Critical Sunds Defibrator Industries AB
Application granted granted Critical
Publication of ES2102008T3 publication Critical patent/ES2102008T3/es
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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
    • 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • 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)
  • Detergent Compositions (AREA)
ES93902618T 1992-01-21 1993-01-12 Blanqueo de pasta papelera quimica. Expired - Lifetime ES2102008T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9200152A SE469842C (sv) 1992-01-21 1992-01-21 Blekning av kemisk massa med peroxid

Publications (1)

Publication Number Publication Date
ES2102008T3 true ES2102008T3 (es) 1997-07-16

Family

ID=20385065

Family Applications (1)

Application Number Title Priority Date Filing Date
ES93902618T Expired - Lifetime ES2102008T3 (es) 1992-01-21 1993-01-12 Blanqueo de pasta papelera quimica.

Country Status (14)

Country Link
EP (1) EP0621915B1 (no)
JP (1) JPH07503042A (no)
AT (1) ATE151826T1 (no)
AU (1) AU653467B2 (no)
BR (1) BR9305761A (no)
CA (1) CA2124088A1 (no)
DE (1) DE69309893T2 (no)
ES (1) ES2102008T3 (no)
FI (1) FI943431A0 (no)
NO (1) NO942718L (no)
NZ (1) NZ246713A (no)
SE (1) SE469842C (no)
WO (1) WO1993014262A1 (no)
ZA (1) ZA93317B (no)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1004674A3 (fr) * 1991-03-11 1993-01-12 Interox Internat Sa Procede pour le blanchiment d'une pate a papier chimique et application de ce procede au blanchiment d'une pate kraft.
BE1006056A3 (fr) * 1992-07-06 1994-05-03 Solvay Interox Procede pour le blanchiment d'une pate a papier chimique.
SE9301960L (sv) * 1993-06-08 1994-07-25 Kvaerner Pulping Tech Blekning av kemisk massa med peroxid vid övertryck
SE501253E8 (sv) * 1993-06-08 1994-12-19 Klorfri blekning av kemisk pappersmassa
BR9407409A (pt) * 1993-09-02 1996-11-12 Union Camp Patent Holding Processo para tratar polpa lignocelulósica antes da etapa de alvejamento e deslignificar a mesma na etapa de deslignificação por oxigênio
BE1007757A3 (fr) * 1993-11-10 1995-10-17 Solvay Interox Procede pour le blanchiment d'une pate a papier chimique.
FR2719854B1 (fr) * 1994-05-11 1996-06-21 Atochem Elf Sa Procédé de préparation de pâtes à papier chimiques délignifiées et blanchies.
SE514697C2 (sv) * 1994-08-31 2001-04-02 Valmet Fibertech Ab Eliminering av metalljoner vid blekning av massa

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8620222D0 (en) * 1986-08-20 1986-10-01 Abitibi Price Inc Peroxide bleaching
US4732650A (en) * 1986-09-15 1988-03-22 The Dow Chemical Company Bleaching of cellulosic pulps using hydrogen peroxide
DE402335T1 (de) * 1989-06-06 1992-04-09 Eka Nobel Ab, Surte Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen.
FI93866B (fi) * 1990-02-09 1995-02-28 Sunds Defibrator Rauma Oy Menetelmä sulfaattimassan valmistamiseksi

Also Published As

Publication number Publication date
SE9200152D0 (sv) 1992-01-21
SE469842B (sv) 1993-09-27
DE69309893D1 (de) 1997-05-22
BR9305761A (pt) 1997-01-28
JPH07503042A (ja) 1995-03-30
SE9200152L (sv) 1993-07-22
FI943431A (fi) 1994-07-20
SE469842C (sv) 1996-01-15
CA2124088A1 (en) 1993-07-22
ATE151826T1 (de) 1997-05-15
ZA93317B (en) 1993-08-19
NO942718D0 (no) 1994-07-20
EP0621915B1 (en) 1997-04-16
NO942718L (no) 1994-07-20
FI943431A0 (fi) 1994-07-20
DE69309893T2 (de) 1997-11-06
AU653467B2 (en) 1994-09-29
WO1993014262A1 (en) 1993-07-22
EP0621915A1 (en) 1994-11-02
AU3412593A (en) 1993-08-03
NZ246713A (en) 1995-04-27

Similar Documents

Publication Publication Date Title
SE7902901L (sv) Sett for blekning av oxygendelignifierad, cellulosahaltig massa med ozon
FR2457339B1 (no)
ATE48290T1 (de) Verfahren zur delignifizierung und bleiche von zellstoffen.
SE9400277L (sv) oxygen/ozon/perättiksyra-delignifiering och -blekning av cellulosamassor
ES2102008T3 (es) Blanqueo de pasta papelera quimica.
CA2137451A1 (en) Bleaching recycled pulp with a reductive-oxidative sequence
FI934036A (fi) Menetelmä massan valkaisemiseksi kloorivapailla kemikaaleilla
DE69301285D1 (de) Verfahren zur Delignifizierung von chemischen Zellstoffen
SE9700992D0 (sv) Method of bleaching kraft pulp
SE8003911L (sv) Forfarande for syrgasblekning av cellulosamassa
ES2073880T3 (es) Procedimiento de blanqueo de materias vegetales en dos etapas.
NO923601L (no) Fremgangsmaate for enzymatisk bleking av cellulose
FI843975A0 (fi) Hypokloritbehandling av kemiska pappersmassor.
SE9301984L (sv) Klorfri blekning av kemisk pappersmassa
ES2038954A6 (es) Metodo para blanquear pasta de papel.
SE9502365D0 (sv) Blekning av lignocellulosahaltigt fibermaterial
SE8904247L (sv) Foerfarande foer blekning av kemisk cellulosamassa

Legal Events

Date Code Title Description
FA2A Application withdrawn

Effective date: 19941031

FG2A Definitive protection

Ref document number: 621915

Country of ref document: ES