SE9000340L - PROCEDURES FOR BLACKING OF LIGNOCELLULOSALLY MATERIAL - Google Patents

PROCEDURES FOR BLACKING OF LIGNOCELLULOSALLY MATERIAL

Info

Publication number
SE9000340L
SE9000340L SE9000340A SE9000340A SE9000340L SE 9000340 L SE9000340 L SE 9000340L SE 9000340 A SE9000340 A SE 9000340A SE 9000340 A SE9000340 A SE 9000340A SE 9000340 L SE9000340 L SE 9000340L
Authority
SE
Sweden
Prior art keywords
pulp
stage
chlorine dioxide
lignocellulosally
blacking
Prior art date
Application number
SE9000340A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE9000340D0 (en
Inventor
R L Andersson
Original Assignee
Eka Nobel 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=20378411&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SE9000340(L) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Eka Nobel Ab filed Critical Eka Nobel Ab
Priority to SE9000340A priority Critical patent/SE9000340L/en
Publication of SE9000340D0 publication Critical patent/SE9000340D0/en
Priority to CA002074715A priority patent/CA2074715C/en
Priority to AU72356/91A priority patent/AU7235691A/en
Priority to ES91903930T priority patent/ES2065007T3/en
Priority to EP91903930A priority patent/EP0500813B1/en
Priority to AT91903930T priority patent/ATE115208T1/en
Priority to JP3504027A priority patent/JPH0672385B2/en
Priority to PCT/SE1991/000051 priority patent/WO1991011554A1/en
Priority to BR919105959A priority patent/BR9105959A/en
Priority to PT96630A priority patent/PT96630B/en
Publication of SE9000340L publication Critical patent/SE9000340L/en
Priority to NO922995A priority patent/NO301177B1/en
Priority to FI923420A priority patent/FI923420A/en

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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process
    • 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)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
  • Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

The present invention relates to a process for bleaching of ligno-cellulosic pulp digested by a chemical process for reduced formation of chloro-organic compounds, while preserving the final brightness and strength properties of the pulp, by treating the pulp in a first stage with only chlorine dioxide at a charge factor of up to 2.0, whereupon the pulp is treated in an alkaline extraction stage reinforced with from 3.0 kg of hydrogen peroxide/ton of pulp. After the two-stage treatment the pulp can be finally bleached to the desired brightness in one or more chlorine dioxide stages.
SE9000340A 1990-01-31 1990-01-31 PROCEDURES FOR BLACKING OF LIGNOCELLULOSALLY MATERIAL SE9000340L (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
SE9000340A SE9000340L (en) 1990-01-31 1990-01-31 PROCEDURES FOR BLACKING OF LIGNOCELLULOSALLY MATERIAL
BR919105959A BR9105959A (en) 1990-01-31 1991-01-24 PROCESS FOR THE TARGETING OF LIGNO-CELLULOSIC MATERIAL
PCT/SE1991/000051 WO1991011554A1 (en) 1990-01-31 1991-01-24 Process for bleaching of ligno-cellulosic material
AT91903930T ATE115208T1 (en) 1990-01-31 1991-01-24 PROCESS FOR BLEACHING LIGNOCELLULOSIC MATERIALS.
AU72356/91A AU7235691A (en) 1990-01-31 1991-01-24 Process for bleaching of ligno-cellulosic material
ES91903930T ES2065007T3 (en) 1990-01-31 1991-01-24 PROCEDURE FOR BLEACHING LIGNOCELLULOSIC MATERIAL.
EP91903930A EP0500813B1 (en) 1990-01-31 1991-01-24 Process for bleaching of ligno-cellulosic material
CA002074715A CA2074715C (en) 1990-01-31 1991-01-24 Process for bleaching of ligno-cellulosic material
JP3504027A JPH0672385B2 (en) 1990-01-31 1991-01-24 Bleaching method for lignocellulosic material
PT96630A PT96630B (en) 1990-01-31 1991-01-31 BLANKING PROCESS OF THIN-CELLULOSE MATERIAL
NO922995A NO301177B1 (en) 1990-01-31 1992-07-29 Process for reducing the amount of chlorine-organic constituents formed in lignocellulosic pulp
FI923420A FI923420A (en) 1990-01-31 1992-07-29 FOERFARANDE FOER BLEKNING AV LIGNO- CELLULOSAHALTIGT MATERIAL.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9000340A SE9000340L (en) 1990-01-31 1990-01-31 PROCEDURES FOR BLACKING OF LIGNOCELLULOSALLY MATERIAL

Publications (2)

Publication Number Publication Date
SE9000340D0 SE9000340D0 (en) 1990-01-31
SE9000340L true SE9000340L (en) 1991-08-01

Family

ID=20378411

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9000340A SE9000340L (en) 1990-01-31 1990-01-31 PROCEDURES FOR BLACKING OF LIGNOCELLULOSALLY MATERIAL

Country Status (12)

Country Link
EP (1) EP0500813B1 (en)
JP (1) JPH0672385B2 (en)
AT (1) ATE115208T1 (en)
AU (1) AU7235691A (en)
BR (1) BR9105959A (en)
CA (1) CA2074715C (en)
ES (1) ES2065007T3 (en)
FI (1) FI923420A (en)
NO (1) NO301177B1 (en)
PT (1) PT96630B (en)
SE (1) SE9000340L (en)
WO (1) WO1991011554A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE502706E (en) 1994-04-05 1999-09-27 Mo Och Domsjoe Ab Preparation of bleached cellulose pulp by bleaching with chlorine dioxide and treatment of complexing agents in the same step
SE514697C2 (en) 1994-08-31 2001-04-02 Valmet Fibertech Ab Elimination of metal ions in pulp bleaching
BR9901291B1 (en) 1999-04-27 2011-11-01 process for bleaching low consistency chemical pulps.
EP1244840A4 (en) * 1999-06-08 2003-04-16 Eastern Pulp And Paper Corp Bleaching pulp with high-pressure o 2?
WO2002099186A1 (en) * 2001-06-06 2002-12-12 Kvaerner Pulping Ab Reduction of organically bound chlorine formed in chlorine dioxide bleaching
US8920603B2 (en) 2006-10-11 2014-12-30 Akzo Nobel N.V. Bleaching of pulp
US20090000751A1 (en) * 2007-06-29 2009-01-01 Caifang Yin Bleaching process with at least one extraction stage
RU2445415C1 (en) * 2010-11-18 2012-03-20 Государственное образовательное учреждение высшего профессионального образования "Пермский государственный технический университет" Method of bleaching sulphate pulp
SE539163C2 (en) * 2016-01-18 2017-04-25 Valmet Oy Chlorine dioxide stage for controlling viscosity in dissolving pulps
FR3062138B1 (en) * 2017-01-23 2019-06-07 Centre Technique De L'industrie Des Papiers, Cartons Et Celluloses PROCESS FOR WHITENING A PAPER PULP

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1100709A (en) * 1965-06-25 1968-01-24 Pulp Paper Res Inst Two-stage purification of fibrous cellulose material
US3720577A (en) * 1970-05-25 1973-03-13 Int Paper Co Chlorine dioxide-peracetic acid-chlorine dioxide pulp bleaching sequence
CA1056558A (en) * 1974-06-11 1979-06-19 Canadian Industries Limited Strenghtening of mechanical pulp by chemical treatment
JPS5249305A (en) * 1975-10-16 1977-04-20 Mitsubishi Gas Chemical Co Finishing process for pulp bleached with oxygen
JPS5328523A (en) * 1976-08-30 1978-03-16 Hitachi Metals Ltd Method of horizontally continuously casting roll and roller
SE7613827L (en) * 1976-12-09 1978-06-10 Sca Development Ab WAY TO TREAT LIGNOCELLULOSIS-CONTAINING MATERIAL.
FR2416297A1 (en) * 1978-01-31 1979-08-31 Europeen Cellulose Three-stage paper pulp bleaching - giving high whiteness level, by treating with chlorine, hypochlorite or peroxide oxidant and chlorine di:oxide
US4568420B1 (en) * 1984-12-03 1999-03-02 Int Paper Co Multi-stage bleaching process including an enhanced oxidative extraction stage
JPH01168985A (en) * 1987-12-22 1989-07-04 Oji Paper Co Ltd Bleaching of lignocellulose substance

Also Published As

Publication number Publication date
PT96630B (en) 2001-05-31
JPH0672385B2 (en) 1994-09-14
EP0500813B1 (en) 1994-12-07
NO922995L (en) 1992-09-15
WO1991011554A1 (en) 1991-08-08
ATE115208T1 (en) 1994-12-15
ES2065007T3 (en) 1995-02-01
JPH04507118A (en) 1992-12-10
PT96630A (en) 1991-10-15
NO922995D0 (en) 1992-07-29
SE9000340D0 (en) 1990-01-31
FI923420A0 (en) 1992-07-29
AU7235691A (en) 1991-08-21
CA2074715A1 (en) 1991-08-01
CA2074715C (en) 2000-09-05
NO301177B1 (en) 1997-09-22
BR9105959A (en) 1992-10-13
EP0500813A1 (en) 1992-09-02
FI923420A (en) 1992-07-29

Similar Documents

Publication Publication Date Title
EP0512590B1 (en) Process for bleaching of lignocellulose-containing material
NO180495C (en) Process of delignification and bleaching of chemically suspended lignocellulosic material
CA2270524A1 (en) Method of producing pulp using single-stage cooking with formic acid and washing with performic acid
PT754258E (en) METHOD FOR THE TREATMENT OF PASTE WITH A COMPLEXACATION AGENT IN CONJUGACAO WITH A STAGE OF TREATMENT WITH CHLORO DIOXIDE
SE9000340L (en) PROCEDURES FOR BLACKING OF LIGNOCELLULOSALLY MATERIAL
ATE48860T1 (en) PROCESS FOR PRODUCTION OF A CHEMI-MECHANICAL AND SEMICHEMICAL BLEACHED PULP BY A TWO-STAGE IMPREGNATION PROCESS.
SE9102589D0 (en) CHLORINE-FREE PROCESS FOR BLEACHING PULP
DE69430009D1 (en) METHOD FOR PRODUCING BLEACHED FABRIC
SE9700992L (en) Procedure for bleaching of pulp
NO902206D0 (en) PROCEDURE FOR DELIGNIFICATION OF LIGNOCELLULOSE FIBERS.
EP0778909B1 (en) Pulp bleaching
FI882769A (en) STYRNING AV PEROXIDBLEKNING AV OLIKA TRAEMASSOR.
SE9600773L (en) Average consistency-brightness enhancement with ozone of high-consistency-ozone bleached mass
SE9203121L (en) Bleaching of sulfate pulp with peroxide-ozone-peroxide

Legal Events

Date Code Title Description
NAV Patent application has lapsed

Ref document number: 9000340-1

Effective date: 19940519

Format of ref document f/p: F