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SE428939B - Forfarande for delignifiering av ett ligninhaltigt material - Google Patents

Forfarande for delignifiering av ett ligninhaltigt material

Info

Publication number
SE428939B
SE428939B SE7603352A SE7603352A SE428939B SE 428939 B SE428939 B SE 428939B SE 7603352 A SE7603352 A SE 7603352A SE 7603352 A SE7603352 A SE 7603352A SE 428939 B SE428939 B SE 428939B
Authority
SE
Sweden
Prior art keywords
delignifying
procedure
similar material
similar
Prior art date
Application number
SE7603352A
Other languages
English (en)
Other versions
SE7603352L (sv
Inventor
E V Sjostrom
Original Assignee
Ahlstroem Oy
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 Ahlstroem Oy filed Critical Ahlstroem Oy
Publication of SE7603352L publication Critical patent/SE7603352L/sv
Publication of SE428939B publication Critical patent/SE428939B/sv

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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/222—Use of compounds accelerating the pulping 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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
  • Gas Separation By Absorption (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
SE7603352A 1975-03-18 1976-03-17 Forfarande for delignifiering av ett ligninhaltigt material SE428939B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI750799A FI51833C (sv) 1975-03-18 1975-03-18

Publications (2)

Publication Number Publication Date
SE7603352L SE7603352L (sv) 1976-09-19
SE428939B true SE428939B (sv) 1983-08-01

Family

ID=8509062

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7603352A SE428939B (sv) 1975-03-18 1976-03-17 Forfarande for delignifiering av ett ligninhaltigt material

Country Status (7)

Country Link
JP (1) JPS51119801A (sv)
CA (1) CA1088261A (sv)
DE (1) DE2610891A1 (sv)
FI (1) FI51833C (sv)
FR (1) FR2304718A1 (sv)
NO (1) NO760908L (sv)
SE (1) SE428939B (sv)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036681A (en) * 1976-12-14 1977-07-19 Canadian Industries, Ltd. Delignification of lignocellulosic material with an alkaline pulping liquor containing a Diels Alder adduct of benzoquinone or naphthoquinone
CA1094264A (en) * 1976-12-14 1981-01-27 Canadian Industries Limited Delignification of lignocellulosic material with a soda liquor containing a cyclic keto compound and a nitro aromatic compound
US4036680A (en) * 1976-12-14 1977-07-19 Canadian Industries, Ltd. Delignification of lignocellulosic material with a soda pulping liquor containing a Diels Alder adduct of benzoquinone or naphthoquinone in admixture with a nitro aromatic compound
JPS5512806A (en) * 1978-07-04 1980-01-29 Oji Paper Co Alkali pulp producing method
SE413785B (sv) * 1978-09-22 1980-06-23 Mo Och Domsjoe Ab Forfarande for uppslutning av lignocellulosahaltiga material genom alkalisk kokning i nervaro av ett tillsatsemne av redoxtyp

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI52877B (sv) * 1972-11-16 1977-08-31 Ahlstroem Oy

Also Published As

Publication number Publication date
FR2304718A1 (fr) 1976-10-15
FI750799A (sv) 1976-09-19
DE2610891A1 (de) 1976-09-30
CA1088261A (en) 1980-10-28
FR2304718B1 (sv) 1979-08-31
SE7603352L (sv) 1976-09-19
FI51833B (sv) 1976-12-31
JPS51119801A (en) 1976-10-20
FI51833C (sv) 1978-01-24
NO760908L (sv) 1976-09-21

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