FR2388934A1 - Procede de traitement des pates cellulosiques - Google Patents
Procede de traitement des pates cellulosiquesInfo
- 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
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.
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)
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)
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO131996C (fr) * | 1973-10-04 | 1975-09-03 | Papirind Forskningsinst |
-
1978
- 1978-04-25 FI FI781285A patent/FI67412C/fi not_active IP Right Cessation
- 1978-04-26 SE SE7804786A patent/SE439507B/sv not_active IP Right Cessation
- 1978-04-26 BR BR7802596A patent/BR7802596A/pt unknown
- 1978-04-26 CA CA302,000A patent/CA1083870A/fr not_active Expired
- 1978-04-27 DE DE19782818660 patent/DE2818660A1/de active Granted
- 1978-04-27 JP JP5068478A patent/JPS53143706A/ja active Granted
- 1978-04-27 FR FR7812540A patent/FR2388934A1/fr active Pending
Patent Citations (1)
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)
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 |
---|---|
FI67412B (fi) | 1984-11-30 |
DE2818660C2 (fr) | 1988-09-22 |
JPS53143706A (en) | 1978-12-14 |
SE7804786L (sv) | 1978-10-28 |
FI781285A (fi) | 1978-10-28 |
CA1083870A (fr) | 1980-08-19 |
FI67412C (fi) | 1985-03-11 |
BR7802596A (pt) | 1978-12-12 |
SE439507B (sv) | 1985-06-17 |
DE2818660A1 (de) | 1978-11-02 |
JPS62275B2 (fr) | 1987-01-07 |
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