JPS6360158B2 - - Google Patents

Info

Publication number
JPS6360158B2
JPS6360158B2 JP57037131A JP3713182A JPS6360158B2 JP S6360158 B2 JPS6360158 B2 JP S6360158B2 JP 57037131 A JP57037131 A JP 57037131A JP 3713182 A JP3713182 A JP 3713182A JP S6360158 B2 JPS6360158 B2 JP S6360158B2
Authority
JP
Japan
Prior art keywords
oxygen gas
pulp
during
partial pressure
alkali treatment
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
JP57037131A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57161185A (en
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
Publication of JPS57161185A publication Critical patent/JPS57161185A/ja
Publication of JPS6360158B2 publication Critical patent/JPS6360158B2/ja
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
    • D21C9/1005—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)
JP57037131A 1981-03-23 1982-03-08 Delignification of cellulose pulp Granted JPS57161185A (en)

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
JPS57161185A JPS57161185A (en) 1982-10-04
JPS6360158B2 true JPS6360158B2 (enrdf_load_stackoverflow) 1988-11-22

Family

ID=20343394

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57037131A Granted JPS57161185A (en) 1981-03-23 1982-03-08 Delignification of cellulose pulp

Country Status (6)

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

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
AU550433B2 (en) 1986-03-20
JPS57161185A (en) 1982-10-04
NZ199697A (en) 1986-01-24
AU8115182A (en) 1982-09-30
SE8101815L (enrdf_load_stackoverflow) 1982-09-24
SE425674B (sv) 1982-10-25
FR2502203B1 (enrdf_load_stackoverflow) 1984-11-23
FR2502203A1 (fr) 1982-09-24
CA1180510A (en) 1985-01-08

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