FI56710C - Foerfarande foer delignifiering av cellulosahaltigt material i alkalisk omgivning under anvaendning av syre - Google Patents

Foerfarande foer delignifiering av cellulosahaltigt material i alkalisk omgivning under anvaendning av syre Download PDF

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Publication number
FI56710C
FI56710C FI3013/74A FI301374A FI56710C FI 56710 C FI56710 C FI 56710C FI 3013/74 A FI3013/74 A FI 3013/74A FI 301374 A FI301374 A FI 301374A FI 56710 C FI56710 C FI 56710C
Authority
FI
Finland
Prior art keywords
oxygen
delignification
vessel
cellulose material
pulp
Prior art date
Application number
FI3013/74A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI301374A (fr
FI56710B (fi
Inventor
Tadashi Nagano
Saisei Miyao
Katsuhiko Takeda
Original Assignee
Toyo Pulp Co Ltd
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 Toyo Pulp Co Ltd filed Critical Toyo Pulp Co Ltd
Publication of FI301374A publication Critical patent/FI301374A/fi
Publication of FI56710B publication Critical patent/FI56710B/fi
Application granted granted Critical
Publication of FI56710C publication Critical patent/FI56710C/fi

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
    • D21C9/1068—Bleaching ; Apparatus therefor with O2

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
FI3013/74A 1974-02-18 1974-10-15 Foerfarande foer delignifiering av cellulosahaltigt material i alkalisk omgivning under anvaendning av syre FI56710C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1928774 1974-02-18
JP49019287A JPS5241361B2 (fr) 1974-02-18 1974-02-18

Publications (3)

Publication Number Publication Date
FI301374A FI301374A (fr) 1975-08-19
FI56710B FI56710B (fi) 1979-11-30
FI56710C true FI56710C (fi) 1981-07-27

Family

ID=11995220

Family Applications (1)

Application Number Title Priority Date Filing Date
FI3013/74A FI56710C (fi) 1974-02-18 1974-10-15 Foerfarande foer delignifiering av cellulosahaltigt material i alkalisk omgivning under anvaendning av syre

Country Status (9)

Country Link
JP (1) JPS5241361B2 (fr)
BR (1) BR7408260A (fr)
CA (1) CA1036758A (fr)
FI (1) FI56710C (fr)
FR (1) FR2261371B1 (fr)
GB (1) GB1489222A (fr)
IT (1) IT1022768B (fr)
NO (1) NO743539L (fr)
SE (1) SE411464B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52148201A (en) * 1976-06-01 1977-12-09 Toyo Pulp Co Ltd Process for making alkali pulp and lignin separation

Also Published As

Publication number Publication date
BR7408260A (pt) 1976-04-27
FI301374A (fr) 1975-08-19
DE2450608A1 (de) 1975-08-21
FI56710B (fi) 1979-11-30
SE411464B (sv) 1979-12-27
FR2261371B1 (fr) 1977-10-28
AU7383574A (en) 1976-04-08
JPS5241361B2 (fr) 1977-10-18
IT1022768B (it) 1978-04-20
CA1036758A (fr) 1978-08-22
FR2261371A1 (fr) 1975-09-12
GB1489222A (en) 1977-10-19
NO743539L (fr) 1975-08-19
SE7412272L (fr) 1975-08-19
DE2450608B2 (de) 1976-04-15
JPS50112501A (fr) 1975-09-04

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