CA1268906A - Defibrage de la pate au sulfate - Google Patents
Defibrage de la pate au sulfateInfo
- Publication number
- CA1268906A CA1268906A CA000500799A CA500799A CA1268906A CA 1268906 A CA1268906 A CA 1268906A CA 000500799 A CA000500799 A CA 000500799A CA 500799 A CA500799 A CA 500799A CA 1268906 A CA1268906 A CA 1268906A
- Authority
- CA
- Canada
- Prior art keywords
- pulp
- procedure according
- polysulphide
- treatment
- weight
- 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.)
- Expired - Fee Related
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
- D21C9/001—Modification of pulp properties
- D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
-
- 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
- D21C9/001—Modification of pulp properties
- D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
- D21C9/004—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives inorganic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8500472A SE452483B (sv) | 1985-02-01 | 1985-02-01 | Forfarande for delignifiering av sulfatmassa |
SE8500472-9 | 1985-02-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1268906A true CA1268906A (fr) | 1990-05-15 |
Family
ID=20358977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000500799A Expired - Fee Related CA1268906A (fr) | 1985-02-01 | 1986-01-31 | Defibrage de la pate au sulfate |
Country Status (3)
Country | Link |
---|---|
CA (1) | CA1268906A (fr) |
FI (1) | FI81135C (fr) |
SE (1) | SE452483B (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE8704041L (sv) * | 1987-10-16 | 1989-04-17 | Sca Development Ab | Saett vid blekning av cellulosamassa |
-
1985
- 1985-02-01 SE SE8500472A patent/SE452483B/sv not_active IP Right Cessation
-
1986
- 1986-01-29 FI FI860421A patent/FI81135C/fi not_active IP Right Cessation
- 1986-01-31 CA CA000500799A patent/CA1268906A/fr not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
SE8500472D0 (sv) | 1985-02-01 |
FI81135B (fi) | 1990-05-31 |
FI81135C (fi) | 1990-09-10 |
FI860421A0 (fi) | 1986-01-29 |
SE452483B (sv) | 1987-11-30 |
FI860421A (fi) | 1986-08-02 |
SE8500472L (sv) | 1986-08-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0796367B1 (fr) | Production de pate prehydrolysee | |
US4804440A (en) | Multistage brightening of high yield and ultra high-yield wood pulps | |
US4196043A (en) | Kraft pulp bleaching and recovery process | |
AU2007253774B2 (en) | Methods for carbonate pretreatment and pulping of cellulosic material | |
US6143130A (en) | Polysulfide pulping process | |
CA2203096C (fr) | Procede pour la fabrication en discontinu de pate kraft amelioree | |
US4406735A (en) | Process for alkaline oxygen gas bleaching of cellulose pulp | |
EP0635080B1 (fr) | Procede de production de pate | |
EP0464110B1 (fr) | Procede de blanchiment servant a la production de pulpes tres claires | |
US4141786A (en) | Manganic ion delignification of lignocellulosic material | |
US4113553A (en) | Sodium sulfide pulping with hydrogen sulfide generation | |
US5698075A (en) | Process for bleaching a chemical paper pulp in an oxygen-peroxymonosulfuric acid-hydrogen peroxide sequence | |
EP0468016B1 (fr) | Procede de preparation de pate a papier kraft | |
CA1268906A (fr) | Defibrage de la pate au sulfate | |
JP2005515311A (ja) | ケミカルセルロースパルプの連続蒸煮方法 | |
US3567572A (en) | Polysulfide liquor impregnation of lignocellulose materials in a multistage pulping process | |
EP2006441B1 (fr) | Procédés et systèmes pour le blanchiment de pâtes lignocellulosiques après cuisson avec du carbonate de sodium et de l'anthraquinone | |
WO1995032331A1 (fr) | Impregnation sulfuree de copeaux pour procede alcalin de trituration | |
CA1180512A (fr) | Methode pour reduire la deperdition des carbohydrates au cours de la preparation de la pate de bois au sulfate par intervention d'un pretraitement du bois a l'oxygene et aux oxydes d'azote | |
EP0091457B1 (fr) | Procede de traitement au polysulfure dans une reduction alcaline de pulpe d'un materiau de lignocellulose | |
Lindström et al. | The effect of polysulfide pretreatment when kraft pulping to very low kappa numbers | |
CA1288906C (fr) | Methode d'acidification de la pate papetiere pour promouvoir la conservation des residus d'agents de blanchiment specifiques | |
SU318236A1 (ru) | ВСЕСОЮЗНАЯ ,I 4fs^<f7,f-uff^, -.'•-•i/'.'li; т.'-;-' 4-,г- ., ,.-;^Eй!r^L-ir:,;^^i:lS[-;:Уl?t: &>&^^л>&у::Т:-ч-;/>&. i | |
CA1209307A (fr) | Procede et liqueur de cuisson alcaline au sulfite et au sulfure pour la preparation de pates a partir de matieres premieres cellulosiques renfermant de la lignine | |
US1598880A (en) | Process of producing chemical wood pulp |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MKLA | Lapsed |