FI933410A - Selektiv behandling av pappersmassa med ozon - Google Patents
Selektiv behandling av pappersmassa med ozon Download PDFInfo
- Publication number
- FI933410A FI933410A FI933410A FI933410A FI933410A FI 933410 A FI933410 A FI 933410A FI 933410 A FI933410 A FI 933410A FI 933410 A FI933410 A FI 933410A FI 933410 A FI933410 A FI 933410A
- Authority
- FI
- Finland
- Prior art keywords
- ozone
- paper
- selective handling
- selective
- handling
- Prior art date
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
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
- D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
-
- 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
- D21B1/30—Defibrating by other means
- D21B1/32—Defibrating by other means of waste paper
-
- 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
- D21B1/30—Defibrating by other means
- D21B1/32—Defibrating by other means of waste paper
- D21B1/325—Defibrating by other means of waste paper de-inking devices
-
- 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
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/02—Working-up waste paper
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US92314192A | 1992-07-31 | 1992-07-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
FI933410A0 FI933410A0 (fi) | 1993-07-30 |
FI933410A true FI933410A (fi) | 1994-02-01 |
Family
ID=25448191
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI933410A FI933410A (fi) | 1992-07-31 | 1993-07-30 | Selektiv behandling av pappersmassa med ozon |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0581631A1 (fi) |
JP (1) | JPH06166980A (fi) |
CA (1) | CA2101188A1 (fi) |
FI (1) | FI933410A (fi) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2708009B1 (fr) * | 1993-07-19 | 1995-09-08 | Papeteries Matussiere Forest | Procédé de désencrage de papiers de récupération. |
WO2013191640A1 (en) * | 2012-06-21 | 2013-12-27 | Domsjö Fabriker Ab | Method of obtaining a fraction of cellulose fibers with increased solvent accessibility |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI67412C (fi) * | 1977-04-27 | 1985-03-11 | Myrens Verksted As | Foerfarande foer behandling av cellulosahaltig massa |
DE2908660C2 (de) * | 1979-03-06 | 1984-02-09 | J.M. Voith Gmbh, 7920 Heidenheim | Verfahren und Anlage zur Rückgewinnung einer Faserstoffsuspension aus gemischtem Altpapier |
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 |
AU636173B2 (en) * | 1989-10-30 | 1993-04-22 | Lenzing Aktiengesellschaft | Method for the chlorine-free bleaching of pulps |
-
1993
- 1993-07-08 EP EP19930401777 patent/EP0581631A1/en not_active Withdrawn
- 1993-07-23 CA CA 2101188 patent/CA2101188A1/en not_active Abandoned
- 1993-07-29 JP JP18833293A patent/JPH06166980A/ja active Pending
- 1993-07-30 FI FI933410A patent/FI933410A/fi unknown
Also Published As
Publication number | Publication date |
---|---|
EP0581631A1 (en) | 1994-02-02 |
JPH06166980A (ja) | 1994-06-14 |
CA2101188A1 (en) | 1994-02-01 |
FI933410A0 (fi) | 1993-07-30 |
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