FR2388934A1 - Procede de traitement des pates cellulosiques - Google Patents

Procede de traitement des pates cellulosiques

Info

Publication number
FR2388934A1
FR2388934A1 FR7812540A FR7812540A FR2388934A1 FR 2388934 A1 FR2388934 A1 FR 2388934A1 FR 7812540 A FR7812540 A FR 7812540A FR 7812540 A FR7812540 A FR 7812540A FR 2388934 A1 FR2388934 A1 FR 2388934A1
Authority
FR
France
Prior art keywords
fraction
ozone
fractions
contg
treating
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.)
Pending
Application number
FR7812540A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Myrens Verksted AS
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 NO771471A external-priority patent/NO139895C/no
Priority claimed from NO771472A external-priority patent/NO139896C/no
Application filed by Myrens Verksted AS filed Critical Myrens Verksted AS
Publication of FR2388934A1 publication Critical patent/FR2388934A1/fr
Pending 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
    • D21C9/1073—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)

Abstract

Ce procédé consiste à fractionner la pâte en deux ou plusieurs fractions de tailles de particules différentes avant de traiter une ou plusieurs fractions par l'ozone. Le fractionnement peut être effectué dans un dispositif de fractionnement intégre dans une installation complète de traitement, le dispositif de fractionnement étant consitué d'une série de tamis. Suivant la qualité du papier final fabriqué, on réunit diverses fractions traitées à l'ozone et non traitées de la pâte à des stades divers du traitement.
FR7812540A 1977-04-27 1978-04-27 Procede de traitement des pates cellulosiques Pending FR2388934A1 (fr)

Applications Claiming Priority (2)

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

Publications (1)

Publication Number Publication Date
FR2388934A1 true FR2388934A1 (fr) 1978-11-24

Family

ID=26647635

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7812540A Pending FR2388934A1 (fr) 1977-04-27 1978-04-27 Procede de traitement des pates cellulosiques

Country Status (7)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
EP0581631A1 (fr) * 1992-07-31 1994-02-02 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Traitement sélectif de pâte avec de l'ozone

Families Citing this family (7)

* 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
JPS6430088A (en) * 1987-07-24 1989-01-31 Konishiroku Photo Ind Tape cassette
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

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1249136A (fr) * 1959-03-25 1960-12-23 Phrix Werke Ag Procédé de traitement et d'homogénéisation de matières cellulosiques

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO131996C (fr) * 1973-10-04 1975-09-03 Papirind Forskningsinst

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1249136A (fr) * 1959-03-25 1960-12-23 Phrix Werke Ag Procédé de traitement et d'homogénéisation de matières cellulosiques

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
EP0581631A1 (fr) * 1992-07-31 1994-02-02 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Traitement sélectif de pâte avec de l'ozone

Also Published As

Publication number Publication date
SE439507B (sv) 1985-06-17
DE2818660A1 (de) 1978-11-02
CA1083870A (fr) 1980-08-19
DE2818660C2 (fr) 1988-09-22
JPS62275B2 (fr) 1987-01-07
SE7804786L (sv) 1978-10-28
FI67412C (fi) 1985-03-11
FI781285A (fi) 1978-10-28
FI67412B (fi) 1984-11-30
JPS53143706A (en) 1978-12-14
BR7802596A (pt) 1978-12-12

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