CA1122358A - Process for the full bleaching of pulp - Google Patents

Process for the full bleaching of pulp

Info

Publication number
CA1122358A
CA1122358A CA335,412A CA335412A CA1122358A CA 1122358 A CA1122358 A CA 1122358A CA 335412 A CA335412 A CA 335412A CA 1122358 A CA1122358 A CA 1122358A
Authority
CA
Canada
Prior art keywords
stage
pulp
process according
minutes
temperature
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
Application number
CA335,412A
Other languages
English (en)
French (fr)
Inventor
Horst Kruger
Wilhelm Berndt
Hans U. 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
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 filed Critical Degussa GmbH
Application granted granted Critical
Publication of CA1122358A publication Critical patent/CA1122358A/en
Expired 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)
CA335,412A 1978-09-21 1979-09-11 Process for the full bleaching of pulp Expired CA1122358A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2841013A DE2841013C2 (de) 1978-09-21 1978-09-21 Verfahren zur Vollbleiche von Zellstoff
DEP2841013.1 1978-09-21

Publications (1)

Publication Number Publication Date
CA1122358A true CA1122358A (en) 1982-04-27

Family

ID=6049994

Family Applications (1)

Application Number Title Priority Date Filing Date
CA335,412A Expired CA1122358A (en) 1978-09-21 1979-09-11 Process for the full bleaching of pulp

Country Status (11)

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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991012366A1 (en) * 1990-02-19 1991-08-22 Amcor Limited Bleaching of paper pulp
AU642971B2 (en) * 1990-02-19 1993-11-04 Paper Australia Pty Ltd Bleaching of paper pulp
US5607546A (en) * 1990-02-13 1997-03-04 Molnlycke Ab CTMP-process
US6398908B1 (en) 1991-04-30 2002-06-04 Eka Nobel Ab Process for acid bleaching of lignocellulose-containing pulp with a magnesium compound
US6458245B1 (en) 1990-02-13 2002-10-01 Sca Research Ab CTMP-process

Families Citing this family (5)

* 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
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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE582239C (de) * 1929-03-16 1933-09-14 I G Farbenindustrie Akt Ges Verfahren zum Bleichen von Bastfasern, insbesondere von Leinen und Hanf, in Form von Garnen und Geweben wie auch in Form von Rohfasern unter Verwendung von Superoxyd- und Hypochloritbaedern
FR1010501A (fr) * 1948-08-31 1952-06-12 Papiers Abadie Sa Des Procédé de blanchîment des pâtes cellulosiques
SE335053B (no) * 1969-05-13 1971-05-10 Mo Och Domsjoe Ab
DE2219504C2 (de) * 1972-04-21 1974-10-03 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt Mehrstufenbleiche von Zellstoffen mit erheblich reduziertem Chloreinsatz
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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5607546A (en) * 1990-02-13 1997-03-04 Molnlycke Ab CTMP-process
US6458245B1 (en) 1990-02-13 2002-10-01 Sca Research Ab CTMP-process
WO1991012366A1 (en) * 1990-02-19 1991-08-22 Amcor Limited Bleaching of paper pulp
AU642971B2 (en) * 1990-02-19 1993-11-04 Paper Australia Pty Ltd Bleaching of paper pulp
US6398908B1 (en) 1991-04-30 2002-06-04 Eka Nobel Ab Process for acid bleaching of lignocellulose-containing pulp with a magnesium compound

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
FR2436846A1 (fr) 1980-04-18
AT372426B (de) 1983-10-10
NO153342B (no) 1985-11-18
DE2841013C2 (de) 1984-06-07
ATA620579A (de) 1983-02-15
FR2436846B1 (no) 1982-08-27
FI68681B (fi) 1985-06-28
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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