NO824357L - Fremgangsmåte til fremstilling av halvbleket cellulose. - Google Patents
Fremgangsmåte til fremstilling av halvbleket cellulose.Info
- Publication number
- NO824357L NO824357L NO824357A NO824357A NO824357L NO 824357 L NO824357 L NO 824357L NO 824357 A NO824357 A NO 824357A NO 824357 A NO824357 A NO 824357A NO 824357 L NO824357 L NO 824357L
- Authority
- NO
- Norway
- Prior art keywords
- semi
- preparation
- bleached cellulose
- hydrogen peroxide
- sodium silicate
- 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
-
- 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
- D21C9/1068—Bleaching ; Apparatus therefor with O2
-
- 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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3207157A DE3207157C1 (de) | 1982-02-27 | 1982-02-27 | Verfahren zur Herstellung von halbgebleichten Zellstoffen |
Publications (1)
Publication Number | Publication Date |
---|---|
NO824357L true NO824357L (no) | 1983-08-29 |
Family
ID=6156909
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO824357A NO824357L (no) | 1982-02-27 | 1982-12-23 | Fremgangsmåte til fremstilling av halvbleket cellulose. |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0087553B1 (fr) |
AT (1) | ATE21133T1 (fr) |
DE (2) | DE3207157C1 (fr) |
FI (1) | FI824295L (fr) |
NO (1) | NO824357L (fr) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3428352A1 (de) * | 1984-08-01 | 1986-02-13 | Degussa Ag, 6000 Frankfurt | Verfahren zur delignifizierung und bleiche von zellstoffen |
DE3446301A1 (de) * | 1984-12-19 | 1986-06-19 | Degussa Ag, 6000 Frankfurt | Verfahren zur delignifizierung von sulfatzellstoffen |
CA1251903A (fr) * | 1985-06-17 | 1989-04-04 | Pulp And Paper Research Institute Of Canada | Traitement des pates chimiques non blanchies et chlorees, par recours a un agent alcalin, au peroxyde et a l'oxygene |
US5011572A (en) * | 1989-05-19 | 1991-04-30 | Fmc Corporation | Two stage process for the oxygen delignification of lignocellulosic fibers with peroxide reinforcement in the first stage |
DE69007267T2 (de) * | 1990-01-05 | 1994-06-16 | Praxair Technology Inc | Bleichen von Textilien mit Sauerstoff und Wasserstoffperoxid. |
ZA924351B (en) * | 1991-06-27 | 1993-03-31 | Ahlstroem Oy | Ozone bleaching process |
BE1005800A3 (fr) * | 1992-05-22 | 1994-02-01 | Solvay Interox | Procede pour la delignification et le blanchiment d'une pate a papier chimique. |
FI925159A0 (fi) * | 1992-11-13 | 1992-11-13 | Ahlstroem Oy | Foerfarande foer blekning av massa |
SE500616C2 (sv) * | 1993-06-08 | 1994-07-25 | Kvaerner Pulping Tech | Blekning av kemisk massa med peroxid vid övertryck |
WO1995018260A1 (fr) * | 1993-12-28 | 1995-07-06 | Mauvin Material And Chemical Processing Limited | Procede de delignification de matieres vegetales ligno-cellulosiques vierges et usees a des fins de production de fibres cellulosiques, de sucres libres et de produits derives de lignine |
FR2719854B1 (fr) * | 1994-05-11 | 1996-06-21 | Atochem Elf Sa | Procédé de préparation de pâtes à papier chimiques délignifiées et blanchies. |
ZA955190B (en) * | 1994-07-11 | 1996-03-14 | Ingersoll Rand Co | Method for bleaching wood pulp using hydrogen peroxide |
DE69608910T2 (de) * | 1995-12-07 | 2001-01-18 | Beloit Technologies, Inc. | Delignifizierung eines papierzellstoffs mittlerer konsistenz mittels sauerstoff |
DE19751173A1 (de) * | 1997-11-19 | 1999-05-27 | Voith Sulzer Papiertech Patent | Verfahren zur Erhöhung des Weißgrades von Papierfaserstoff |
RU2744339C1 (ru) * | 2020-07-20 | 2021-03-05 | федеральное государственное бюджетное образовательное учреждение высшего образования "Пермский национальный исследовательский политехнический университет" | Способ отбелки сульфитной целлюлозы |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE324285B (fr) * | 1968-11-22 | 1970-05-25 | T Norin | |
FI45574C (fi) * | 1970-05-11 | 1972-07-10 | Kymin Oy Kymmene Ab | Menetelmä selluloosapitoisten aineiden valkaisemiseksi. |
US3832276A (en) * | 1973-03-07 | 1974-08-27 | Int Paper Co | Delignification and bleaching of a cellulose pulp slurry with oxygen |
JPS5138508A (en) * | 1974-09-25 | 1976-03-31 | Harusuke Hayashi | Parupuno sansosankaseisei niokeru hogozai |
US3951733A (en) * | 1974-11-06 | 1976-04-20 | International Paper Company | Delignification and bleaching of wood pulp with oxygen |
-
1982
- 1982-02-27 DE DE3207157A patent/DE3207157C1/de not_active Expired
- 1982-12-14 FI FI824295A patent/FI824295L/fi not_active Application Discontinuation
- 1982-12-23 NO NO824357A patent/NO824357L/no unknown
-
1983
- 1983-01-08 AT AT83100115T patent/ATE21133T1/de not_active IP Right Cessation
- 1983-01-08 EP EP83100115A patent/EP0087553B1/fr not_active Expired
- 1983-01-08 DE DE8383100115T patent/DE3364788D1/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FI824295A0 (fi) | 1982-12-14 |
FI824295L (fi) | 1983-08-28 |
DE3364788D1 (en) | 1986-09-04 |
EP0087553A1 (fr) | 1983-09-07 |
DE3207157C1 (de) | 1983-06-09 |
EP0087553B1 (fr) | 1986-07-30 |
ATE21133T1 (de) | 1986-08-15 |
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