FI73750B - Saett vid blekning av lignocellulosahaltigt material. - Google Patents
Saett vid blekning av lignocellulosahaltigt material. Download PDFInfo
- Publication number
- FI73750B FI73750B FI801254A FI801254A FI73750B FI 73750 B FI73750 B FI 73750B FI 801254 A FI801254 A FI 801254A FI 801254 A FI801254 A FI 801254A FI 73750 B FI73750 B FI 73750B
- Authority
- FI
- Finland
- Prior art keywords
- oxygen
- pulp
- extraction
- bleaching
- mass
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Compounds Of Unknown Constitution (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7904148A SE462919B (sv) | 1979-05-11 | 1979-05-11 | Saett att genomfoera alkaliextraktion av cellulosamassa i naervaro av syre |
SE7904148 | 1979-05-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
FI801254A FI801254A (fi) | 1980-11-12 |
FI73750B true FI73750B (fi) | 1987-07-31 |
Family
ID=20338027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI801254A FI73750B (fi) | 1979-05-11 | 1980-04-18 | Saett vid blekning av lignocellulosahaltigt material. |
Country Status (9)
Country | Link |
---|---|
US (1) | US4451332A (sv) |
JP (1) | JPS55151001A (sv) |
BR (1) | BR8002768A (sv) |
CA (2) | CA1150011A (sv) |
DE (1) | DE3017712C2 (sv) |
FI (1) | FI73750B (sv) |
FR (1) | FR2456159A1 (sv) |
NO (1) | NO159541B (sv) |
SE (1) | SE462919B (sv) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI67241B (fi) * | 1981-06-10 | 1984-10-31 | Aga Ab | Saett foer blekning av cellulosahaltiga material |
US4543155A (en) * | 1983-01-31 | 1985-09-24 | The Boc Group, Inc. | Method for bleaching wood pulp including dissolving oxygen into the dilution water of an extraction stage |
US4568420B1 (en) * | 1984-12-03 | 1999-03-02 | Int Paper Co | Multi-stage bleaching process including an enhanced oxidative extraction stage |
SE452896B (sv) * | 1985-01-24 | 1987-12-21 | Aga Ab | Forfarande for behandling av cellulosamassor |
EP0279845A4 (en) * | 1986-08-28 | 1991-01-09 | James River-Norwalk, Inc. | Pulp bleaching process |
FR2604102B1 (fr) * | 1986-09-18 | 1988-11-10 | Air Liquide | Masse silicocalcaire a haute porosite pour stockage de gaz, et procede de fabrication |
US5023097A (en) * | 1988-04-05 | 1991-06-11 | Xylan, Inc. | Delignification of non-woody biomass |
US4842877A (en) * | 1988-04-05 | 1989-06-27 | Xylan, Inc. | Delignification of non-woody biomass |
US5173153A (en) * | 1991-01-03 | 1992-12-22 | Union Camp Patent Holding, Inc. | Process for enhanced oxygen delignification using high consistency and a split alkali addition |
US5085734A (en) * | 1989-02-15 | 1992-02-04 | Union Camp Patent Holding, Inc. | Methods of high consistency oxygen delignification using a low consistency alkali pretreatment |
US5217574A (en) * | 1989-02-15 | 1993-06-08 | Union Camp Patent Holdings Inc. | Process for oxygen delignifying high consistency pulp by removing and recycling pressate from alkaline pulp |
US5188708A (en) * | 1989-02-15 | 1993-02-23 | Union Camp Patent Holding, Inc. | Process for high consistency oxygen delignification followed by ozone relignification |
US5211811A (en) * | 1989-02-15 | 1993-05-18 | Union Camp Patent Holding, Inc. | Process for high consistency oxygen delignification of alkaline treated pulp followed by ozone delignification |
US5409570A (en) * | 1989-02-15 | 1995-04-25 | Union Camp Patent Holding, Inc. | Process for ozone bleaching of oxygen delignified pulp while conveying the pulp through a reaction zone |
US5525195A (en) * | 1989-02-15 | 1996-06-11 | Union Camp Patent Holding, Inc. | Process for high consistency delignification using a low consistency alkali pretreatment |
SE466062B (sv) * | 1990-04-30 | 1991-12-09 | Sunds Defibrator Ind Ab | Blekning av kemisk massa |
US5164044A (en) * | 1990-05-17 | 1992-11-17 | Union Camp Patent Holding, Inc. | Environmentally improved process for bleaching lignocellulosic materials with ozone |
US5164043A (en) * | 1990-05-17 | 1992-11-17 | Union Camp Patent Holding, Inc. | Environmentally improved process for bleaching lignocellulosic materials with ozone |
US5441603A (en) * | 1990-05-17 | 1995-08-15 | Union Camp Patent Holding, Inc. | Method for chelation of pulp prior to ozone delignification |
CA2053035C (en) * | 1990-10-12 | 1997-09-30 | Repap Enterprises Inc. | Chlorine-free wood pulps and process of making |
US5554259A (en) * | 1993-10-01 | 1996-09-10 | Union Camp Patent Holdings, Inc. | Reduction of salt scale precipitation by control of process stream Ph and salt concentration |
US5697990A (en) * | 1995-01-31 | 1997-12-16 | Worthington Acetylene Cylinder, Inc. | High porosity calcium silicate mass for storing acetylene gas |
US5632788A (en) * | 1995-01-31 | 1997-05-27 | Worthington Acetylene Cylinder, Inc. | High porosity calcium silicate mass for storing acetylene gas |
US5705216A (en) * | 1995-08-11 | 1998-01-06 | Tyson; George J. | Production of hydrophobic fibers |
US20050067122A1 (en) * | 2000-05-17 | 2005-03-31 | Bijan Kazem | Methods of processing lignocellulosic pulp with cavitation |
RU2425069C2 (ru) * | 2009-07-02 | 2011-07-27 | Учреждение Российской Академии Наук Институт Биохимической Физики Им. Н.М. Эмануэля Ран (Ибхф Ран) | Антипирен, способ его получения, способ огнезащитной обработки материалов и способ тушения очага горения |
FI123023B (sv) | 2009-09-01 | 2012-10-15 | Andritz Oy | Förfarande och anordning för avskiljning av såpa |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2147618A (en) * | 1936-04-01 | 1939-02-14 | West Virginia Pulp & Paper Com | Method of bleaching pulp |
SE360128C (sv) * | 1970-08-25 | 1983-10-31 | Mo Och Domsjoe Ab | Sett att bleka cellulosamassa med en syreinnehallande gas i nervaro av alkali |
US3830688A (en) * | 1970-10-23 | 1974-08-20 | Skogsaegarnas Ind Ab | Method of reducing the discharge of waste products from pulp mills |
US3832276A (en) * | 1973-03-07 | 1974-08-27 | Int Paper Co | Delignification and bleaching of a cellulose pulp slurry with oxygen |
AU473185B2 (en) * | 1973-07-25 | 1976-06-17 | Mooch Domsjo Aktiebolag | A method for producing oxidized white liquor |
SE379069B (sv) * | 1973-08-27 | 1975-09-22 | Kamyr Ab | |
SE390549C (sv) * | 1973-12-20 | 1986-04-14 | Ahlstroem Oy | Sett att bleka cellulosahaltigt material med syre eller fritt syre innehallande gas i alkalisk miljo |
US4104114A (en) * | 1977-05-05 | 1978-08-01 | Erco Envirotech Ltd. | Bleach plant operation |
US4198266A (en) * | 1977-10-12 | 1980-04-15 | Airco, Inc. | Oxygen delignification of wood pulp |
-
1979
- 1979-05-11 SE SE7904148A patent/SE462919B/sv unknown
-
1980
- 1980-04-11 JP JP4794380A patent/JPS55151001A/ja active Pending
- 1980-04-18 FI FI801254A patent/FI73750B/fi not_active Application Discontinuation
- 1980-05-05 CA CA000351280A patent/CA1150011A/en not_active Expired
- 1980-05-06 BR BR8002768A patent/BR8002768A/pt not_active IP Right Cessation
- 1980-05-08 DE DE3017712A patent/DE3017712C2/de not_active Expired
- 1980-05-09 FR FR8010378A patent/FR2456159A1/fr active Granted
- 1980-05-09 NO NO801386A patent/NO159541B/no unknown
-
1982
- 1982-07-29 US US06/403,070 patent/US4451332A/en not_active Expired - Fee Related
-
1987
- 1987-07-17 CA CA000542455A patent/CA1235257B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE3017712A1 (de) | 1980-11-20 |
NO159541B (no) | 1988-10-03 |
DE3017712C2 (de) | 1986-11-06 |
JPS55151001A (en) | 1980-11-25 |
SE7904148L (sv) | 1980-11-12 |
FR2456159B1 (sv) | 1984-09-28 |
NO801386L (no) | 1980-11-12 |
US4451332A (en) | 1984-05-29 |
CA1150011A (en) | 1983-07-19 |
BR8002768A (pt) | 1980-12-16 |
FI801254A (fi) | 1980-11-12 |
SE462919B (sv) | 1990-09-17 |
FR2456159A1 (fr) | 1980-12-05 |
CA1235257B (en) | 1988-04-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FC | Application refused |
Owner name: SUNDS DEFIBRATOR AKTIEBOLAG |