NO942665L - Fremgangsmåte ved bleking av lignocelluloseholdige fibre - Google Patents

Fremgangsmåte ved bleking av lignocelluloseholdige fibre

Info

Publication number
NO942665L
NO942665L NO942665A NO942665A NO942665L NO 942665 L NO942665 L NO 942665L NO 942665 A NO942665 A NO 942665A NO 942665 A NO942665 A NO 942665A NO 942665 L NO942665 L NO 942665L
Authority
NO
Norway
Prior art keywords
bleaching
hydrogen peroxide
lignocellulosic fibers
bleaching lignocellulosic
hydrogen
Prior art date
Application number
NO942665A
Other languages
English (en)
Other versions
NO942665D0 (no
Inventor
Birgitta Sundblad
Sverker Albertsson
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
Priority claimed from SE9302427A external-priority patent/SE501582C2/sv
Priority claimed from SE9303713A external-priority patent/SE9303713D0/xx
Application filed by Eka Nobel Ab filed Critical Eka Nobel Ab
Publication of NO942665D0 publication Critical patent/NO942665D0/no
Publication of NO942665L publication Critical patent/NO942665L/no

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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids
    • 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
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/02—Working-up waste paper
    • D21C5/022—Chemicals therefor
    • 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
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
    • 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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/64—Paper recycling

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Toxicology (AREA)
  • Paper (AREA)

Abstract

Foreliggende oppfinnelse vedrører en forbedret frem- gangsmåte ved bleking av returfibre med hydrogenperoksyd ved at blekingen skjer i nærvær av ozon eller en persyre eller salter derav. Oppfinnelsen gjør det mulig med til- gjengelig apparatur og styringsutrusting mer effektivt å utnytte hydrogenperoksydets bleke-evne enn det som tidligere var mulig med kjente fremgangsmåter. Således kan returfiberet blekes til meget høyere lysheter med en uendret mengde hydrogenperoksyd eller til samme lyshet med en nedsatt satsing av hydrogenperoksyder.
NO942665A 1993-07-16 1994-07-15 Fremgangsmåte ved bleking av lignocelluloseholdige fibre NO942665L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9302427A SE501582C2 (sv) 1993-07-16 1993-07-16 Blekning av returfibrer med väteperoxid
SE9303713A SE9303713D0 (sv) 1993-11-10 1993-11-10 Förfarande för blekning av lignocellulosahaltiga fibrer

Publications (2)

Publication Number Publication Date
NO942665D0 NO942665D0 (no) 1994-07-15
NO942665L true NO942665L (no) 1995-01-17

Family

ID=26661804

Family Applications (1)

Application Number Title Priority Date Filing Date
NO942665A NO942665L (no) 1993-07-16 1994-07-15 Fremgangsmåte ved bleking av lignocelluloseholdige fibre

Country Status (4)

Country Link
EP (1) EP0634521A1 (no)
CA (1) CA2127967A1 (no)
FI (1) FI943333A (no)
NO (1) NO942665L (no)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2776312B1 (fr) * 1998-03-18 2000-05-05 Air Liquide Procede de destruction des agents fluorescents contenus dans les vieux papiers par l'acide peracetique
GB2391011A (en) * 2002-07-19 2004-01-28 Crosmill Ltd Bleaching cellulose suspensions
SE0600022L (sv) * 2006-01-04 2007-07-05 Kvaerner Pulping Tech Process för tillverkning av perättiksyra samt sätt att bleka cellulosa med perättiksyra
CN104445771A (zh) * 2014-10-24 2015-03-25 天津市联合环保工程设计有限公司 一种用于色织布丝光废碱液的催化氧化蒸发回收系统
FI127996B (en) * 2016-07-01 2019-07-15 Kemira Oyj Process for treating cellulose

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3005947B1 (de) * 1980-02-16 1981-01-29 Degussa Verfahren zur Bleiche von Zellstoffen mittels organischer Persaeure
FR2550561B1 (fr) * 1983-08-08 1986-08-08 Interox Procede pour la regeneration des vieux papiers
JPH04108192A (ja) * 1990-04-25 1992-04-09 Hoechst Japan Ltd パルプの漂白法

Also Published As

Publication number Publication date
CA2127967A1 (en) 1995-01-17
EP0634521A1 (en) 1995-01-18
FI943333A (fi) 1995-01-17
FI943333A0 (fi) 1994-07-13
NO942665D0 (no) 1994-07-15

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