SE8101815L - - Google Patents

Info

Publication number
SE8101815L
SE8101815L SE8101815A SE8101815A SE8101815L SE 8101815 L SE8101815 L SE 8101815L SE 8101815 A SE8101815 A SE 8101815A SE 8101815 A SE8101815 A SE 8101815A SE 8101815 L SE8101815 L SE 8101815L
Authority
SE
Sweden
Application number
SE8101815A
Other versions
SE425674B (sv
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 filed Critical
Priority to SE8101815A priority Critical patent/SE425674B/sv
Priority to NZ199697A priority patent/NZ199697A/en
Priority to AU81151/82A priority patent/AU550433B2/en
Priority to JP57037131A priority patent/JPS57161185A/ja
Priority to FR8204875A priority patent/FR2502203A1/fr
Priority to CA000399940A priority patent/CA1180510A/en
Publication of SE8101815L publication Critical patent/SE8101815L/xx
Publication of SE425674B publication Critical patent/SE425674B/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
    • 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
    • D21C9/1068—Bleaching ; Apparatus therefor with O2
    • 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
SE8101815A 1981-03-23 1981-03-23 Forfarande for delignifiering av cellulosamassa med kvevedioxid och syrgas SE425674B (sv)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE8101815A SE425674B (sv) 1981-03-23 1981-03-23 Forfarande for delignifiering av cellulosamassa med kvevedioxid och syrgas
NZ199697A NZ199697A (en) 1981-03-23 1982-02-11 Delignifying lignocellulose pulp using oxygen and nitrogen dioxide treatment followed by oxygen and alkali treatment
AU81151/82A AU550433B2 (en) 1981-03-23 1982-03-05 Bleaching cellulose pulp
JP57037131A JPS57161185A (en) 1981-03-23 1982-03-08 Delignification of cellulose pulp
FR8204875A FR2502203A1 (fr) 1981-03-23 1982-03-23 Procede de delignification de pate de cellulose
CA000399940A CA1180510A (en) 1981-03-23 1982-03-31 Process for removing residual lignin in chemical cellulose pulp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8101815A SE425674B (sv) 1981-03-23 1981-03-23 Forfarande for delignifiering av cellulosamassa med kvevedioxid och syrgas

Publications (2)

Publication Number Publication Date
SE8101815L true SE8101815L (cs) 1982-09-24
SE425674B SE425674B (sv) 1982-10-25

Family

ID=20343394

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8101815A SE425674B (sv) 1981-03-23 1981-03-23 Forfarande for delignifiering av cellulosamassa med kvevedioxid och syrgas

Country Status (6)

Country Link
JP (1) JPS57161185A (cs)
AU (1) AU550433B2 (cs)
CA (1) CA1180510A (cs)
FR (1) FR2502203A1 (cs)
NZ (1) NZ199697A (cs)
SE (1) SE425674B (cs)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1505070A (en) * 1974-06-11 1978-03-22 Canadian Ind Process for bleaching of lignocellulosic material
CA1070909A (en) * 1976-05-04 1980-02-05 Canadian Industries Limited Nitrogen dioxide-oxygen delignification

Also Published As

Publication number Publication date
NZ199697A (en) 1986-01-24
AU550433B2 (en) 1986-03-20
CA1180510A (en) 1985-01-08
JPS57161185A (en) 1982-10-04
SE425674B (sv) 1982-10-25
FR2502203B1 (cs) 1984-11-23
FR2502203A1 (fr) 1982-09-24
JPS6360158B2 (cs) 1988-11-22
AU8115182A (en) 1982-09-30

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