FR2436846A1 - Procede de blanchiment complet de la cellulose - Google Patents

Procede de blanchiment complet de la cellulose

Info

Publication number
FR2436846A1
FR2436846A1 FR7917876A FR7917876A FR2436846A1 FR 2436846 A1 FR2436846 A1 FR 2436846A1 FR 7917876 A FR7917876 A FR 7917876A FR 7917876 A FR7917876 A FR 7917876A FR 2436846 A1 FR2436846 A1 FR 2436846A1
Authority
FR
France
Prior art keywords
bleaching
stages
pulp
washing
chlorine
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.)
Granted
Application number
FR7917876A
Other languages
English (en)
Other versions
FR2436846B1 (fr
Inventor
Horst Kruger
Wilhelm Berndt
Hans Ulrich Suss
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.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Deutsche Gold und Silber Scheideanstalt
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 Degussa GmbH, Deutsche Gold und Silber Scheideanstalt filed Critical Degussa GmbH
Publication of FR2436846A1 publication Critical patent/FR2436846A1/fr
Application granted granted Critical
Publication of FR2436846B1 publication Critical patent/FR2436846B1/fr
Granted 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
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

A.L'INVENTION CONCERNE UN PROCEDE COMPRENANT AU MOINS TROIS ETAPES POUR LE BLANCHIMENT COMPLET DE LA CELLULOSE. B.APRES UN TRAITEMENT PREALABLE EVENTUEL AVEC DES SELS DE MAGNESIUM ETOU DES COMPLEXANTS ORGANIQUES, ON BLANCHIT DANS LA PREMIERE ETAPE AVEC UN COMPOSE PEROXYDE, DANS LA SECONDE ETAPE AVEC UN CHLORITE, ET DANS LA TROISIEME, A NOUVEAU AVEC UN COMPOSE PEROXYDE. C.CE PROCEDE PRESENTE LES AVANTAGES D'AUGMENTER LE RENDEMENT, D'AMELIORER LE BLANC, ET DE REJETER MOINS DE CHLORE DANS LES EAUX USEES.
FR7917876A 1978-09-21 1979-07-10 Procede de blanchiment complet de la cellulose Granted FR2436846A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2841013A DE2841013C2 (de) 1978-09-21 1978-09-21 Verfahren zur Vollbleiche von Zellstoff

Publications (2)

Publication Number Publication Date
FR2436846A1 true FR2436846A1 (fr) 1980-04-18
FR2436846B1 FR2436846B1 (fr) 1982-08-27

Family

ID=6049994

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7917876A Granted FR2436846A1 (fr) 1978-09-21 1979-07-10 Procede de blanchiment complet de la cellulose

Country Status (11)

Country Link
AT (1) AT372426B (fr)
BE (1) BE878841A (fr)
BR (1) BR7905860A (fr)
CA (1) CA1122358A (fr)
CH (1) CH641515A5 (fr)
DE (1) DE2841013C2 (fr)
FI (1) FI68681C (fr)
FR (1) FR2436846A1 (fr)
IT (1) IT1119314B (fr)
NO (1) NO153342C (fr)
SE (1) SE445366B (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3937932A1 (de) * 1989-11-15 1991-05-16 Holtzmann & Cie Ag E Verfahren zum delignifizieren und bleichen von ungebleichten zellstoffsuspensionen mit alkalichlorit
SE466060C (sv) 1990-02-13 1995-07-11 Moelnlycke Ab Absorberande kemitermomekanisk massa och framställning därav
US5607546A (en) * 1990-02-13 1997-03-04 Molnlycke Ab CTMP-process
AU642971B2 (en) * 1990-02-19 1993-11-04 Paper Australia Pty Ltd Bleaching of paper pulp
NZ237019A (en) * 1990-02-19 1992-11-25 Amcor Ltd Bleaching paper pulp by initially treating with oxygen and/or hydrogen peroxide and subsequently treating with a bleaching agent without intervening washing steps
US6398908B1 (en) 1991-04-30 2002-06-04 Eka Nobel Ab Process for acid bleaching of lignocellulose-containing pulp with a magnesium compound
SE500353C2 (sv) * 1992-10-26 1994-06-06 Sca Wifsta Oestrand Ab Peroxidblekning av sulfatmassa med tillsats av magnesium före blekningen
SE9203366L (sv) * 1992-11-11 1994-05-12 Mo Och Domsjoe Ab Förfarande vid delignifiering och/eller blekning av cellulosamassa
SE501325E (sv) * 1993-01-29 1999-06-09 Kvaerner Pulping Tech Förfarande för klorfri blekning av massa, varvid massan surgöres med ättiksyra vid behandlingen med komplexbildare
SE502706E (sv) * 1994-04-05 1999-06-18 Mo Och Domsjoe Ab Framställnng av blekt cellulosamassa genom blekning med klordioxid och behandling av komplexbildare i samma steg

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1883846A (en) * 1929-03-16 1932-10-18 Ig Farbenindustrie Ag Process of bleaching bast fibers, especially bast fibers of linen, hemp, and the like
FR1010501A (fr) * 1948-08-31 1952-06-12 Papiers Abadie Sa Des Procédé de blanchîment des pâtes cellulosiques
DE2219504A1 (de) * 1972-04-21 1973-11-15 Degussa Mehrstufenbleiche von zellstoffen mit erheblich reduziertem chloreinsatz

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE335053B (fr) * 1969-05-13 1971-05-10 Mo Och Domsjoe Ab
DE2327900C3 (de) * 1973-06-01 1985-02-07 Degussa Ag, 6000 Frankfurt Bleichaufschluß von Zellstoff mit erheblich reduziertem Chloreinsatz
DE2721402C2 (de) * 1977-05-12 1984-04-12 Degussa Ag, 6000 Frankfurt Verfahren zum Bleichen von Zellstoff

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1883846A (en) * 1929-03-16 1932-10-18 Ig Farbenindustrie Ag Process of bleaching bast fibers, especially bast fibers of linen, hemp, and the like
FR1010501A (fr) * 1948-08-31 1952-06-12 Papiers Abadie Sa Des Procédé de blanchîment des pâtes cellulosiques
DE2219504A1 (de) * 1972-04-21 1973-11-15 Degussa Mehrstufenbleiche von zellstoffen mit erheblich reduziertem chloreinsatz
FR2365000A1 (fr) * 1972-04-21 1978-04-14 Degussa Procede de blanchiment de la cellulose a plusieurs etapes avec mise en oeuvre de chlore reduite

Also Published As

Publication number Publication date
IT1119314B (it) 1986-03-10
NO153342C (no) 1986-02-26
SE7907850L (sv) 1980-03-22
BE878841A (fr) 1980-03-17
CH641515A5 (en) 1984-02-29
NO792067L (no) 1980-03-24
DE2841013A1 (de) 1980-04-03
FI792115A (fi) 1980-03-22
FI68681C (fi) 1985-10-10
AT372426B (de) 1983-10-10
NO153342B (no) 1985-11-18
DE2841013C2 (de) 1984-06-07
ATA620579A (de) 1983-02-15
FR2436846B1 (fr) 1982-08-27
FI68681B (fi) 1985-06-28
CA1122358A (fr) 1982-04-27
BR7905860A (pt) 1980-05-20
IT7968380A0 (it) 1979-06-29
SE445366B (sv) 1986-06-16

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Legal Events

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CD Change of name or company name
ST Notification of lapse