FI915845A0 - Foerfarande och anordning foer blekning av fibermaterial. - Google Patents
Foerfarande och anordning foer blekning av fibermaterial.Info
- Publication number
- FI915845A0 FI915845A0 FI915845A FI915845A FI915845A0 FI 915845 A0 FI915845 A0 FI 915845A0 FI 915845 A FI915845 A FI 915845A FI 915845 A FI915845 A FI 915845A FI 915845 A0 FI915845 A0 FI 915845A0
- Authority
- FI
- Finland
- Prior art keywords
- fibermaterial
- anordning foer
- och anordning
- foerfarande och
- blekning
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/114—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections
- B01F27/1143—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections screw-shaped, e.g. worms
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US62972890A | 1990-12-21 | 1990-12-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
FI915845A0 true FI915845A0 (fi) | 1991-12-12 |
FI915845A FI915845A (fi) | 1992-06-22 |
Family
ID=24524235
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI915845A FI915845A (fi) | 1990-12-21 | 1991-12-12 | Foerfarande och anordning foer blekning av fibermaterial. |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0492040A1 (fi) |
JP (1) | JPH04245990A (fi) |
AU (1) | AU7916491A (fi) |
BR (1) | BR9104774A (fi) |
CA (1) | CA2044898A1 (fi) |
FI (1) | FI915845A (fi) |
NO (1) | NO914100L (fi) |
ZA (1) | ZA915143B (fi) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5472572A (en) * | 1990-10-26 | 1995-12-05 | Union Camp Patent Holding, Inc. | Reactor for bleaching high consistency pulp with ozone |
US5520783A (en) * | 1990-10-26 | 1996-05-28 | Union Camp Patent Holding, Inc. | Apparatus for bleaching high consistency pulp with ozone |
CA2046717A1 (en) * | 1991-02-06 | 1992-08-07 | Beloit Technologies, Inc. | Method and apparatus for treating fibrous materials with a gaseous reagent |
US6126781A (en) * | 1991-08-01 | 2000-10-03 | Union Camp Patent Holding, Inc. | Process for conditioning ozone gas recycle stream in ozone pulp bleaching |
FI925558A (fi) * | 1992-04-22 | 1993-10-23 | Ahlstroem Oy | Foerfarande och anordning foer blekning av massa |
AU671159B2 (en) * | 1992-10-01 | 1996-08-15 | Union Camp Patent Holding, Inc. | Improved bleaching of high consistency lignocellulosic pulp |
WO1994015018A1 (en) * | 1992-12-18 | 1994-07-07 | Ingersoll-Rand Company | Method and apparatus for regulating wood pulp bleaching |
US5810973A (en) * | 1993-09-21 | 1998-09-22 | Beloit Technologies, Inc. | Apparatus for producing small particles from high consistency wood pulp |
WO1996002697A1 (en) * | 1994-07-14 | 1996-02-01 | Union Camp Patent Holding, Inc. | Improved bleaching of high consistency lignocellulosic pulp |
WO1996005365A1 (en) * | 1994-08-11 | 1996-02-22 | Beloit Technologies, Inc. | Means for gas-sealingly conveying shredded pulp |
WO1997005327A1 (en) * | 1995-07-26 | 1997-02-13 | Beloit Technologies, Inc. | Method and apparatus for bleaching pulp with a gaseous bleaching reagent |
US5944952A (en) * | 1995-07-26 | 1999-08-31 | Beloit Technologies, Inc. | Method for bleaching high consistency pulp with a gaseous bleaching reagent |
US6077396A (en) * | 1997-05-16 | 2000-06-20 | Lariviere; Christopher J. | Apparatus for fluffing and contacting high consistancy wood pulp with a gaseous bleaching reagent |
SE514416C2 (sv) * | 1999-06-10 | 2001-02-19 | Valmet Fibertech Ab | Metod och system för gastät inmatning av massa till en reaktor för ozonblekning |
US6994831B1 (en) * | 2002-10-23 | 2006-02-07 | The United States Of America As Represented By The United States Department Of Energy | Oxidative tritium decontamination system |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI67413C (fi) * | 1977-04-27 | 1985-03-11 | Myrens Verksted As | Foerfarande foer behandling av finfoerdelad fiberhaltig eller cellulosahaltig massa samt anordning foer utfoerande av foerfarandet |
FR2620744A1 (fr) * | 1987-09-17 | 1989-03-24 | Degremont | Procede de traitement par l'ozone de materiaux ligno-cellulosiques, notamment de pates a papier et reacteur pour la mise en oeuvre de ce procede |
AT395180B (de) * | 1989-08-16 | 1992-10-12 | Andritz Ag Maschf | Verfahren zur zerkleinerung von materialien und anlage zu dessen durchfuehrung |
-
1991
- 1991-06-14 EP EP91109789A patent/EP0492040A1/en not_active Withdrawn
- 1991-06-18 CA CA002044898A patent/CA2044898A1/en not_active Abandoned
- 1991-06-19 AU AU79164/91A patent/AU7916491A/en not_active Abandoned
- 1991-07-03 ZA ZA915143A patent/ZA915143B/xx unknown
- 1991-09-24 JP JP3243441A patent/JPH04245990A/ja not_active Withdrawn
- 1991-10-18 NO NO91914100A patent/NO914100L/no unknown
- 1991-11-01 BR BR919104774A patent/BR9104774A/pt unknown
- 1991-12-12 FI FI915845A patent/FI915845A/fi not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
FI915845A (fi) | 1992-06-22 |
NO914100D0 (no) | 1991-10-18 |
JPH04245990A (ja) | 1992-09-02 |
CA2044898A1 (en) | 1992-06-22 |
NO914100L (no) | 1992-06-22 |
EP0492040A1 (en) | 1992-07-01 |
BR9104774A (pt) | 1992-08-18 |
ZA915143B (en) | 1992-10-28 |
AU7916491A (en) | 1992-06-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD | Application lapsed |