SE445122B - Forfarande for delignifiering av cellulosamassa i nervaro av kvevedioxid - Google Patents

Forfarande for delignifiering av cellulosamassa i nervaro av kvevedioxid

Info

Publication number
SE445122B
SE445122B SE8008874A SE8008874A SE445122B SE 445122 B SE445122 B SE 445122B SE 8008874 A SE8008874 A SE 8008874A SE 8008874 A SE8008874 A SE 8008874A SE 445122 B SE445122 B SE 445122B
Authority
SE
Sweden
Prior art keywords
pulp
activation
alkali
temperature
alkali treatment
Prior art date
Application number
SE8008874A
Other languages
English (en)
Swedish (sv)
Other versions
SE8008874L (sv
Inventor
H O Samuelson
Original Assignee
Mo Och Domsjoe 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
Application filed by Mo Och Domsjoe Ab filed Critical Mo Och Domsjoe Ab
Priority to SE8008874A priority Critical patent/SE445122B/sv
Priority to NZ198925A priority patent/NZ198925A/en
Priority to AU77738/81A priority patent/AU548046B2/en
Priority to FI813954A priority patent/FI73017C/fi
Priority to JP56202386A priority patent/JPS57121689A/ja
Priority to CA000392232A priority patent/CA1159203A/en
Priority to FR8123482A priority patent/FR2496138A1/fr
Priority to NO814309A priority patent/NO158953C/no
Publication of SE8008874L publication Critical patent/SE8008874L/
Publication of SE445122B publication Critical patent/SE445122B/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
    • 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
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
SE8008874A 1980-12-17 1980-12-17 Forfarande for delignifiering av cellulosamassa i nervaro av kvevedioxid SE445122B (sv)

Priority Applications (8)

Application Number Priority Date Filing Date Title
SE8008874A SE445122B (sv) 1980-12-17 1980-12-17 Forfarande for delignifiering av cellulosamassa i nervaro av kvevedioxid
NZ198925A NZ198925A (en) 1980-12-17 1981-11-10 Method for bleaching cellulose pulp using nitrogen oxides and oxygen followed by an alkali treatment
AU77738/81A AU548046B2 (en) 1980-12-17 1981-11-23 Bleaching cellulose pulp
FI813954A FI73017C (fi) 1980-12-17 1981-12-09 Foerfarande vid blekning av cellulosa.
JP56202386A JPS57121689A (en) 1980-12-17 1981-12-14 Bleaching of cellulose pulp
CA000392232A CA1159203A (en) 1980-12-17 1981-12-14 Process for bleaching cellulose pulp by activation with no.sub.2 and oxygen and alkali-extraction at elevated temperature with cellulose degradation
FR8123482A FR2496138A1 (fr) 1980-12-17 1981-12-16 Procede de blanchiment de pate de cellulose
NO814309A NO158953C (no) 1980-12-17 1981-12-16 Fremgangsmaate ved delignifisering av cellulosemasse.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8008874A SE445122B (sv) 1980-12-17 1980-12-17 Forfarande for delignifiering av cellulosamassa i nervaro av kvevedioxid

Publications (2)

Publication Number Publication Date
SE8008874L SE8008874L (sv) 1982-06-18
SE445122B true SE445122B (sv) 1986-06-02

Family

ID=20342493

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8008874A SE445122B (sv) 1980-12-17 1980-12-17 Forfarande for delignifiering av cellulosamassa i nervaro av kvevedioxid

Country Status (8)

Country Link
JP (1) JPS57121689A (fi)
AU (1) AU548046B2 (fi)
CA (1) CA1159203A (fi)
FI (1) FI73017C (fi)
FR (1) FR2496138A1 (fi)
NO (1) NO158953C (fi)
NZ (1) NZ198925A (fi)
SE (1) SE445122B (fi)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE434283B (sv) * 1982-12-01 1984-07-16 Mo Och Domsjoe Ab Forfarande for delignifiering av cellulosamassa med kveveoxider och syrgas

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1070909A (en) * 1976-05-04 1980-02-05 Canadian Industries Limited Nitrogen dioxide-oxygen delignification

Also Published As

Publication number Publication date
AU7773881A (en) 1982-06-24
NO158953B (no) 1988-08-08
JPS57121689A (en) 1982-07-29
NO814309L (no) 1982-06-18
AU548046B2 (en) 1985-11-21
FR2496138A1 (fr) 1982-06-18
FR2496138B1 (fi) 1983-12-02
JPS6350466B2 (fi) 1988-10-07
SE8008874L (sv) 1982-06-18
NZ198925A (en) 1984-09-28
FI73017B (fi) 1987-04-30
FI813954L (fi) 1982-06-18
CA1159203A (en) 1983-12-27
FI73017C (fi) 1987-08-10
NO158953C (no) 1988-11-16

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