FI67412C - Foerfarande foer behandling av cellulosahaltig massa - Google Patents

Foerfarande foer behandling av cellulosahaltig massa Download PDF

Info

Publication number
FI67412C
FI67412C FI781285A FI781285A FI67412C FI 67412 C FI67412 C FI 67412C FI 781285 A FI781285 A FI 781285A FI 781285 A FI781285 A FI 781285A FI 67412 C FI67412 C FI 67412C
Authority
FI
Finland
Prior art keywords
pulp
ozone
fractions
treated
coarse
Prior art date
Application number
FI781285A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI67412B (fi
FI781285A (fi
Inventor
Bjoern H Fritzvold
Nicolai Soteland
Original Assignee
Myrens Verksted As
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
Priority claimed from NO771472A external-priority patent/NO139896C/no
Priority claimed from NO771471A external-priority patent/NO139895C/no
Application filed by Myrens Verksted As filed Critical Myrens Verksted As
Publication of FI781285A publication Critical patent/FI781285A/fi
Publication of FI67412B publication Critical patent/FI67412B/fi
Application granted granted Critical
Publication of FI67412C publication Critical patent/FI67412C/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
    • D21C9/1073—Bleaching ; Apparatus therefor with O3
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/14—Disintegrating in mills
    • D21B1/16—Disintegrating in mills in the presence of chemical agents

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
FI781285A 1977-04-27 1978-04-25 Foerfarande foer behandling av cellulosahaltig massa FI67412C (fi)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NO771472A NO139896C (no) 1977-04-27 1977-04-27 Fremgangsmaate for behandling av celluloseholdig masse ved anvendelse av ozon
NO771471A NO139895C (no) 1977-04-27 1977-04-27 Fremgangsmaate for behandling av celluloseholdig masse ved anvendelse av ozon
NO771471 1977-04-27
NO771472 1977-04-27

Publications (3)

Publication Number Publication Date
FI781285A FI781285A (fi) 1978-10-28
FI67412B FI67412B (fi) 1984-11-30
FI67412C true FI67412C (fi) 1985-03-11

Family

ID=26647635

Family Applications (1)

Application Number Title Priority Date Filing Date
FI781285A FI67412C (fi) 1977-04-27 1978-04-25 Foerfarande foer behandling av cellulosahaltig massa

Country Status (7)

Country Link
JP (1) JPS53143706A (pt)
BR (1) BR7802596A (pt)
CA (1) CA1083870A (pt)
DE (1) DE2818660A1 (pt)
FI (1) FI67412C (pt)
FR (1) FR2388934A1 (pt)
SE (1) SE439507B (pt)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO142091C (no) * 1977-10-17 1980-06-25 Myrens Verksted As Fremgangsmaate ved ozonbehandling av raffinoermekanisk og termomekanisk masse.
DE2908660C2 (de) * 1979-03-06 1984-02-09 J.M. Voith Gmbh, 7920 Heidenheim Verfahren und Anlage zur Rückgewinnung einer Faserstoffsuspension aus gemischtem Altpapier
US4435249A (en) 1979-09-05 1984-03-06 The Black Clawson Co. Process for the oxygen delignification of pulp mill rejects
FR2522030A1 (fr) * 1982-02-19 1983-08-26 Scherb Metenett Papeteries Procede de blanchiment selectif de pate a papier et papier obtenu par mise en oeuvre de ce procede
JPS6430088A (en) * 1987-07-24 1989-01-31 Konishiroku Photo Ind Tape cassette
EP0581631A1 (en) * 1992-07-31 1994-02-02 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Selective treatment of pulp with ozone
DE10256519B4 (de) * 2002-12-04 2006-08-10 Voith Paper Patent Gmbh Verfahren zur Dispergierung eines aus bedrucktem Papier gewonnenen Papierfaserstoffes
FI119062B (fi) 2006-12-28 2008-07-15 Upm Kymmene Corp Menetelmä mekaanisen massan valmistamiseksi
DE102008010447A1 (de) * 2008-02-21 2009-08-27 Voith Patent Gmbh Verfahren zur Behandlung und Verwendung einer Faserstoffsuspension

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1119106B (de) * 1959-03-25 1961-12-07 Phrix Werke Ag Verfahren zum Herstellen eines Kunstfaserzellstoffes aus Holz u. dgl.
NO131996C (pt) * 1973-10-04 1975-09-03 Papirind Forskningsinst

Also Published As

Publication number Publication date
DE2818660C2 (pt) 1988-09-22
FI67412B (fi) 1984-11-30
JPS53143706A (en) 1978-12-14
JPS62275B2 (pt) 1987-01-07
SE7804786L (sv) 1978-10-28
CA1083870A (en) 1980-08-19
BR7802596A (pt) 1978-12-12
SE439507B (sv) 1985-06-17
FI781285A (fi) 1978-10-28
DE2818660A1 (de) 1978-11-02
FR2388934A1 (fr) 1978-11-24

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Legal Events

Date Code Title Description
MM Patent lapsed

Owner name: MYRENS VERKSTED A/S