FR2456159A1 - Procede pour le blanchiement au moyen d'oxygene de matieres contenant de la ligno-cellulose - Google Patents
Procede pour le blanchiement au moyen d'oxygene de matieres contenant de la ligno-celluloseInfo
- Publication number
- FR2456159A1 FR2456159A1 FR8010378A FR8010378A FR2456159A1 FR 2456159 A1 FR2456159 A1 FR 2456159A1 FR 8010378 A FR8010378 A FR 8010378A FR 8010378 A FR8010378 A FR 8010378A FR 2456159 A1 FR2456159 A1 FR 2456159A1
- Authority
- FR
- France
- Prior art keywords
- gas
- extraction
- lignocellulose
- added
- residual liquor
- 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.)
- Granted
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)
Abstract
L'INVENTION EST RELATIVE A UN PROCEDE POUR LA DELIGNIFICATION DE MATIERES FIBREUSES CONTENANT DE LA LIGNO-CELLULOSE PAR EXTRACTION ALCALINE, CARACTERISE EN CE QUE LA MATIERE EST MELANGEE AVEC UN GAZ CONTENANT DE L'OXYGENE IMMEDIATEMENT AVANT LA TOUR POUR L'EXTRACTION ALCALINE NON PRESSURISEE, DANS LAQUELLE LA MATIERE S'ECOULE DE BAS EN HAUT, POUR OBTENIR UN DEGRE ELEVE D'ATOMISATION DU GAZ ET FORMER AINSI UNE MOUSSE A SURFACE STABLE, LA CONCENTRATION EN SOLIDES DE LA MATIERE A TRAITER ETANT COMPRISE ENTRE 6 ET 18 DE PREFERENCE ENTRE 10 ET 12, EN CE QUE LE GAZ EST AJOUTE EN UNE PROPORTION COMPRISE ENTRE 5 ET 150 D'OXYGENE, DE PREFERENCE ENTRE 5 ET 50 CALCULEE SUR LA TENEUR EN LIGNINE DE LA MATIERE A L'ARRIVEE DU STADE PRECEDENT, AU COURS DUQUEL ELLE EST BLANCHIE ENSEMBLE AVEC UNE QUANTITE DE LIQUEUR RESIDUAIRE RECYCLEE CORRESPONDANT A UNE FRACTION COMPRISE ENTRE 5 ET 100 DE LA LIQUEUR RESIDUAIRE DU STADE D'EXTRACTION ALCALINE, ET EN CE QUE LA TEMPERATURE DU STADE D'EXTRACTION EST MAINTENUE ENTRE 40 ET 80C, DE PREFERENCE ENTRE 50 ET 70C, AVANTAGEUSEMENT A 65C, ET EN CE QUE LA QUANTITE D'ALCALI AJOUTEE EST AJUSTEE DE MANIERE A MAINTENIR LE PH FINAL SUPERIEUR A 9.
Applications Claiming Priority (1)
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 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2456159A1 true FR2456159A1 (fr) | 1980-12-05 |
FR2456159B1 FR2456159B1 (fr) | 1984-09-28 |
Family
ID=20338027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8010378A Granted FR2456159A1 (fr) | 1979-05-11 | 1980-05-09 | Procede pour le blanchiement au moyen d'oxygene de matieres contenant de la ligno-cellulose |
Country Status (9)
Country | Link |
---|---|
US (1) | US4451332A (fr) |
JP (1) | JPS55151001A (fr) |
BR (1) | BR8002768A (fr) |
CA (2) | CA1150011A (fr) |
DE (1) | DE3017712C2 (fr) |
FI (1) | FI73750B (fr) |
FR (1) | FR2456159A1 (fr) |
NO (1) | NO159541B (fr) |
SE (1) | SE462919B (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2507639A1 (fr) * | 1981-06-10 | 1982-12-17 | Aga Ab | Procede de blanchiment de matieres contenant de la cellulose |
FR2576331A1 (fr) * | 1985-01-24 | 1986-07-25 | Aga Ab | Procede de traitement de pulpe de cellulose |
EP0480469A2 (fr) * | 1990-10-12 | 1992-04-15 | Alcell Technologies Inc. | Pâtes de bois sans chlore et procédé pour leur obtention |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
WO1988001661A1 (fr) * | 1986-08-28 | 1988-03-10 | James River-Norwalk, Inc. | Procede de blanchiment de pulpes |
FR2604102B1 (fr) * | 1986-09-18 | 1988-11-10 | Air Liquide | Masse silicocalcaire a haute porosite pour stockage de gaz, et procede de fabrication |
US4842877A (en) * | 1988-04-05 | 1989-06-27 | Xylan, Inc. | Delignification of non-woody biomass |
US5023097A (en) * | 1988-04-05 | 1991-06-11 | Xylan, Inc. | Delignification of non-woody biomass |
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 |
US5525195A (en) * | 1989-02-15 | 1996-06-11 | Union Camp Patent Holding, Inc. | Process for high consistency delignification using a low consistency alkali pretreatment |
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 |
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 |
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 |
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 |
SE466062B (sv) * | 1990-04-30 | 1991-12-09 | Sunds Defibrator Ind Ab | Blekning av kemisk massa |
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 |
US5164044A (en) * | 1990-05-17 | 1992-11-17 | Union Camp Patent Holding, Inc. | Environmentally improved process for bleaching lignocellulosic materials with ozone |
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 (fi) | 2009-09-01 | 2012-10-15 | Andritz Oy | Menetelmä ja laitteisto suovan erottamiseksi |
Citations (2)
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 |
FR2220620A1 (fr) * | 1973-03-07 | 1974-10-04 | Int Paper Co |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
AU473185B2 (en) * | 1973-07-25 | 1976-06-17 | Mooch Domsjo Aktiebolag | A method for producing oxidized white liquor |
SE379069B (fr) * | 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/fr 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 NO NO801386A patent/NO159541B/no unknown
- 1980-05-09 FR FR8010378A patent/FR2456159A1/fr active Granted
-
1982
- 1982-07-29 US US06/403,070 patent/US4451332A/en not_active Expired - Fee Related
-
1987
- 1987-07-17 CA CA000542455A patent/CA1235257B/fr not_active Expired
Patent Citations (2)
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 |
FR2220620A1 (fr) * | 1973-03-07 | 1974-10-04 | Int Paper Co |
Non-Patent Citations (1)
Title |
---|
EXBK/75 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2507639A1 (fr) * | 1981-06-10 | 1982-12-17 | Aga Ab | Procede de blanchiment de matieres contenant de la cellulose |
FR2576331A1 (fr) * | 1985-01-24 | 1986-07-25 | Aga Ab | Procede de traitement de pulpe de cellulose |
EP0480469A2 (fr) * | 1990-10-12 | 1992-04-15 | Alcell Technologies Inc. | Pâtes de bois sans chlore et procédé pour leur obtention |
EP0480469A3 (en) * | 1990-10-12 | 1994-06-01 | Alcell Tech Inc | Chlorine-free wood pulps and process of making |
Also Published As
Publication number | Publication date |
---|---|
JPS55151001A (en) | 1980-11-25 |
CA1150011A (fr) | 1983-07-19 |
SE7904148L (sv) | 1980-11-12 |
US4451332A (en) | 1984-05-29 |
DE3017712A1 (de) | 1980-11-20 |
FI73750B (fi) | 1987-07-31 |
CA1235257B (fr) | 1988-04-19 |
SE462919B (sv) | 1990-09-17 |
FI801254A (fi) | 1980-11-12 |
BR8002768A (pt) | 1980-12-16 |
FR2456159B1 (fr) | 1984-09-28 |
NO801386L (no) | 1980-11-12 |
DE3017712C2 (de) | 1986-11-06 |
NO159541B (no) | 1988-10-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
ST | Notification of lapse |