SE0600022L - Process for the production of peracetic acid and the way of bleaching cellulose with peracetic acid - Google Patents

Process for the production of peracetic acid and the way of bleaching cellulose with peracetic acid

Info

Publication number
SE0600022L
SE0600022L SE0600022A SE0600022A SE0600022L SE 0600022 L SE0600022 L SE 0600022L SE 0600022 A SE0600022 A SE 0600022A SE 0600022 A SE0600022 A SE 0600022A SE 0600022 L SE0600022 L SE 0600022L
Authority
SE
Sweden
Prior art keywords
peracetic acid
sub
bleaching
cellulose pulp
delignification
Prior art date
Application number
SE0600022A
Other languages
Swedish (sv)
Inventor
Stefan Backa
Erik Nilsson
Martin Ragnar
Original Assignee
Kvaerner Pulping Tech
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
Application filed by Kvaerner Pulping Tech filed Critical Kvaerner Pulping Tech
Priority to SE0600022A priority Critical patent/SE0600022L/en
Priority to PCT/SE2006/050607 priority patent/WO2007078247A1/en
Publication of SE0600022L publication Critical patent/SE0600022L/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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C407/00—Preparation of peroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C409/00—Peroxy compounds
    • C07C409/24—Peroxy compounds the —O—O— group being bound between a >C=O group and hydrogen, i.e. peroxy acids
    • C07C409/26—Peracetic acid
    • 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

Abstract

The invention concerns a process for the production of peracetic acid (CH<SUB>3</SUB>COOOH) for use in association with the bleaching or delignification of cellulose pulp and a method for the bleaching or delignification of cellulose pulp in which at least one treatment stage is used in which peracetic acid is batchwise added as the principal bleaching agent. The peracetic acid is formed according to the invention from a reaction between hydrogen peroxide H<SUB>2</SUB>O<SUB>2</SUB> and cellulose acetate AC in alkali conditions in the cellulose pulp. The complete reaction mixture is subsequently acidified and allowed to react with the cellulose pulp in a Paa stage. A reduced COD load is achieved through the invention, and equally good or better delignification and bleaching results are achieved as those achieved with the use of peracetic acid produced by another method. Residual products from the production process allow also the possibilities for modification of the properties of the fibres, through increased pulp strength, and increased yield.
SE0600022A 2006-01-04 2006-01-04 Process for the production of peracetic acid and the way of bleaching cellulose with peracetic acid SE0600022L (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE0600022A SE0600022L (en) 2006-01-04 2006-01-04 Process for the production of peracetic acid and the way of bleaching cellulose with peracetic acid
PCT/SE2006/050607 WO2007078247A1 (en) 2006-01-04 2006-12-20 A process for the manufacture of peracetic acid and a method to bleach chemical pulp with peracetic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0600022A SE0600022L (en) 2006-01-04 2006-01-04 Process for the production of peracetic acid and the way of bleaching cellulose with peracetic acid

Publications (1)

Publication Number Publication Date
SE0600022L true SE0600022L (en) 2007-07-05

Family

ID=38228510

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0600022A SE0600022L (en) 2006-01-04 2006-01-04 Process for the production of peracetic acid and the way of bleaching cellulose with peracetic acid

Country Status (2)

Country Link
SE (1) SE0600022L (en)
WO (1) WO2007078247A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011113119A1 (en) * 2010-03-19 2011-09-22 Fibria Celulose S/A Process for the treatment of cellulose pulps, cellulose pulp thus obtained and use of biopolymer for treating cellulose pulps

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0634521A1 (en) * 1993-07-16 1995-01-18 Eka Nobel Ab Method for bleaching lignocellulose-containing fibres
ES2203505T3 (en) * 1999-08-05 2004-04-16 Steris Inc. ELECTROLYTIC SYNTHESIS OF PERACETIC ACID.
GB9930175D0 (en) * 1999-12-22 2000-02-09 Warwick Int Group Peroxyacid delivery process

Also Published As

Publication number Publication date
WO2007078247A1 (en) 2007-07-12

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Legal Events

Date Code Title Description
NAV Patent application has lapsed