FI67894C - Foerfarande och anordning foer blekning av fibermassa - Google Patents
Foerfarande och anordning foer blekning av fibermassa Download PDFInfo
- Publication number
- FI67894C FI67894C FI821811A FI821811A FI67894C FI 67894 C FI67894 C FI 67894C FI 821811 A FI821811 A FI 821811A FI 821811 A FI821811 A FI 821811A FI 67894 C FI67894 C FI 67894C
- Authority
- FI
- Finland
- Prior art keywords
- stage
- bleaching
- scrubber
- chemical
- pulp
- 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
- D21C9/1026—Other features in bleaching processes
-
- 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
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
- D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
- D21C9/142—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 in a multistage process involving ClO2/Cl2 exclusively
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Filtration Of Liquid (AREA)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI821811A FI67894C (fi) | 1982-05-21 | 1982-05-21 | Foerfarande och anordning foer blekning av fibermassa |
DE19833315479 DE3315479A1 (de) | 1982-05-21 | 1983-04-28 | Verfahren und apparatur zum bleichen von faserstoffen |
AT0160083A AT382651B (de) | 1982-05-21 | 1983-05-02 | Verfahren und vorrichtung zum bleichen von faserstoff |
CA000427469A CA1204560A (en) | 1982-05-21 | 1983-05-04 | Method and equipment for pulp bleaching |
US06/493,162 US4529479A (en) | 1982-05-21 | 1983-05-10 | Method for multistage bleaching and washing with recycle of displaced bleaching liquor |
SE8302828A SE462805B (sv) | 1982-05-21 | 1983-05-19 | Foerfarande och anordning foer foertraengningsblekning av fibermassa |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI821811 | 1982-05-21 | ||
FI821811A FI67894C (fi) | 1982-05-21 | 1982-05-21 | Foerfarande och anordning foer blekning av fibermassa |
Publications (4)
Publication Number | Publication Date |
---|---|
FI821811A0 FI821811A0 (fi) | 1982-05-21 |
FI821811A FI821811A (fi) | 1983-11-22 |
FI67894B FI67894B (fi) | 1985-02-28 |
FI67894C true FI67894C (fi) | 1985-06-10 |
Family
ID=8515567
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI821811A FI67894C (fi) | 1982-05-21 | 1982-05-21 | Foerfarande och anordning foer blekning av fibermassa |
Country Status (6)
Country | Link |
---|---|
US (1) | US4529479A (de) |
AT (1) | AT382651B (de) |
CA (1) | CA1204560A (de) |
DE (1) | DE3315479A1 (de) |
FI (1) | FI67894C (de) |
SE (1) | SE462805B (de) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5126009A (en) * | 1986-05-30 | 1992-06-30 | Pulp And Paper Research Institute Of Canada | Process for decreasing the charge of chemical required in a chlorine bleaching extraction stage |
US4808265A (en) * | 1986-08-07 | 1989-02-28 | Ingersoll-Rand Company | Method of washing pulp in a pressure pulp washer adding two washing liquids |
US4944842A (en) * | 1987-03-26 | 1990-07-31 | Kamyr, Inc. | Method for reducing contamination in pulp processing |
US4999085A (en) * | 1988-10-06 | 1991-03-12 | Sunds Defibrator Rauma Oy | Method for screening of defibered chlorine dioxide bleached pulp during alkaline extraction |
FI85513C (fi) * | 1989-04-07 | 1992-04-27 | Salomans Oy | Foerfarande foer behandling av fibermassa med kemikalieloesning. |
FI85293C (sv) * | 1990-05-04 | 1992-03-25 | Poeyry Jaakko & Co Oy | Förfarande för rening och återföring av cellulosafabrikers blekeriavva tten |
US5255540A (en) * | 1990-06-29 | 1993-10-26 | Beloit Technologies, Inc. | Pressurized dynamic washer |
US5246542A (en) * | 1991-09-18 | 1993-09-21 | Fosberg Theodore M | Evaporation and recovery process for bleached chemical thermo-mechanical pulp (BCTMP) effluent |
EP0689626A4 (de) * | 1993-02-19 | 1997-12-10 | Reijo Salminen | Verfahren und vorrichtung zur zellstoffbehandlung |
US6010594A (en) * | 1993-03-03 | 2000-01-04 | Ahlstrom Machinery Corporation | Method of bleaching pulp with chlorine-free chemicals wherein a complexing agent is added immediately after an ozone bleach stage |
US5538632A (en) * | 1993-10-28 | 1996-07-23 | Beloit Technologies, Inc. | Multiple filter dynamic washer |
US6001218A (en) * | 1994-06-29 | 1999-12-14 | Kimberly-Clark Worldwide, Inc. | Production of soft paper products from old newspaper |
US5582681A (en) * | 1994-06-29 | 1996-12-10 | Kimberly-Clark Corporation | Production of soft paper products from old newspaper |
US6074527A (en) * | 1994-06-29 | 2000-06-13 | Kimberly-Clark Worldwide, Inc. | Production of soft paper products from coarse cellulosic fibers |
US6296736B1 (en) | 1997-10-30 | 2001-10-02 | Kimberly-Clark Worldwide, Inc. | Process for modifying pulp from recycled newspapers |
US6387210B1 (en) | 1998-09-30 | 2002-05-14 | Kimberly-Clark Worldwide, Inc. | Method of making sanitary paper product from coarse fibers |
FI121792B (fi) * | 2003-06-30 | 2011-04-15 | Andritz Oy | Menetelmä massan käsittelemiseksi kemiallisen massan valkaisun yhteydessä |
WO2011119423A2 (en) | 2010-03-23 | 2011-09-29 | International Paper Company | Improved bctmp filtrate recycling system and method |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4104114A (en) * | 1977-05-05 | 1978-08-01 | Erco Envirotech Ltd. | Bleach plant operation |
-
1982
- 1982-05-21 FI FI821811A patent/FI67894C/fi not_active IP Right Cessation
-
1983
- 1983-04-28 DE DE19833315479 patent/DE3315479A1/de active Granted
- 1983-05-02 AT AT0160083A patent/AT382651B/de not_active IP Right Cessation
- 1983-05-04 CA CA000427469A patent/CA1204560A/en not_active Expired
- 1983-05-10 US US06/493,162 patent/US4529479A/en not_active Expired - Fee Related
- 1983-05-19 SE SE8302828A patent/SE462805B/sv not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FI821811A (fi) | 1983-11-22 |
DE3315479C2 (de) | 1987-10-08 |
CA1204560A (en) | 1986-05-20 |
FI67894B (fi) | 1985-02-28 |
SE8302828L (sv) | 1983-11-22 |
US4529479A (en) | 1985-07-16 |
ATA160083A (de) | 1986-08-15 |
SE8302828D0 (sv) | 1983-05-19 |
AT382651B (de) | 1987-03-25 |
FI821811A0 (fi) | 1982-05-21 |
SE462805B (sv) | 1990-09-03 |
DE3315479A1 (de) | 1983-11-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM | Patent lapsed | ||
MM | Patent lapsed |
Owner name: RAUMA-REPOLA OY |