SE9704298L - Förfarande vid blekning av cellulosa i ett slutet system under användning av Caro´s syra - Google Patents
Förfarande vid blekning av cellulosa i ett slutet system under användning av Caro´s syraInfo
- Publication number
- SE9704298L SE9704298L SE9704298A SE9704298A SE9704298L SE 9704298 L SE9704298 L SE 9704298L SE 9704298 A SE9704298 A SE 9704298A SE 9704298 A SE9704298 A SE 9704298A SE 9704298 L SE9704298 L SE 9704298L
- Authority
- SE
- Sweden
- Prior art keywords
- acid
- caro
- closed system
- procedure
- bleaching cellulose
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 3
- FHHJDRFHHWUPDG-UHFFFAOYSA-N peroxysulfuric acid Chemical compound OOS(O)(=O)=O FHHJDRFHHWUPDG-UHFFFAOYSA-N 0.000 title abstract 3
- 238000004061 bleaching Methods 0.000 title abstract 2
- 229920002678 cellulose Polymers 0.000 title abstract 2
- 239000001913 cellulose Substances 0.000 title abstract 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 1
- 239000005864 Sulphur Substances 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- 239000011734 sodium Substances 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
- 239000001117 sulphuric acid Substances 0.000 abstract 1
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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids
-
- 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
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/06—Treatment of pulp gases; Recovery of the heat content of the gases; Treatment of gases arising from various sources in pulp and paper mills; Regeneration of gaseous SO2, e.g. arising from liquors containing sulfur compounds
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Paper (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9704298A SE9704298L (sv) | 1997-11-24 | 1997-11-24 | Förfarande vid blekning av cellulosa i ett slutet system under användning av Caro´s syra |
| PCT/SE1998/002117 WO1999027179A1 (en) | 1997-11-24 | 1998-11-23 | Method for bleaching cellulose in a closed system using caro's acid |
| AU13581/99A AU1358199A (en) | 1997-11-24 | 1998-11-23 | Method for bleaching cellulose in a closed system using caro's acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9704298A SE9704298L (sv) | 1997-11-24 | 1997-11-24 | Förfarande vid blekning av cellulosa i ett slutet system under användning av Caro´s syra |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE9704298D0 SE9704298D0 (sv) | 1997-11-24 |
| SE9704298L true SE9704298L (sv) | 1999-05-25 |
Family
ID=20409088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE9704298A SE9704298L (sv) | 1997-11-24 | 1997-11-24 | Förfarande vid blekning av cellulosa i ett slutet system under användning av Caro´s syra |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU1358199A (sv) |
| SE (1) | SE9704298L (sv) |
| WO (1) | WO1999027179A1 (sv) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5246543A (en) * | 1989-08-18 | 1993-09-21 | Degussa Corporation | Process for bleaching and delignification of lignocellulosic materials |
| BE1004674A3 (fr) * | 1991-03-11 | 1993-01-12 | Interox Internat Sa | Procede pour le blanchiment d'une pate a papier chimique et application de ce procede au blanchiment d'une pate kraft. |
| SE500053C2 (sv) * | 1991-09-17 | 1994-03-28 | Mo Och Domsjoe Ab | Ozonblekning varvid massan surgöres med genom elektrolys framställd svavelsyra |
| FI94266B (sv) * | 1992-04-01 | 1995-04-28 | Tampella Power Oy | Förfarande för att återvinna och återanvända sulfid i en sulfatcellulosafabrik |
| US5589032A (en) * | 1992-09-21 | 1996-12-31 | North Carolina State University | Process for preparing a bleaching liquor containing percarboxylic acid and caro's acid |
-
1997
- 1997-11-24 SE SE9704298A patent/SE9704298L/sv not_active Application Discontinuation
-
1998
- 1998-11-23 WO PCT/SE1998/002117 patent/WO1999027179A1/en not_active Ceased
- 1998-11-23 AU AU13581/99A patent/AU1358199A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| AU1358199A (en) | 1999-06-15 |
| WO1999027179A1 (en) | 1999-06-03 |
| SE9704298D0 (sv) | 1997-11-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NAV | Patent application has lapsed |
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