SE0600022L - Process for the production of peracetic acid and the way of bleaching cellulose with peracetic acid - Google Patents
Process for the production of peracetic acid and the way of bleaching cellulose with peracetic acidInfo
- Publication number
- SE0600022L SE0600022L SE0600022A SE0600022A SE0600022L SE 0600022 L SE0600022 L SE 0600022L SE 0600022 A SE0600022 A SE 0600022A SE 0600022 A SE0600022 A SE 0600022A SE 0600022 L SE0600022 L SE 0600022L
- Authority
- SE
- Sweden
- Prior art keywords
- peracetic acid
- sub
- bleaching
- cellulose pulp
- delignification
- Prior art date
Links
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 title abstract 12
- 229920002678 cellulose Polymers 0.000 title abstract 5
- 239000001913 cellulose Substances 0.000 title abstract 5
- 238000004061 bleaching Methods 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 4
- 238000004519 manufacturing process Methods 0.000 title abstract 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 abstract 2
- 239000003513 alkali Substances 0.000 abstract 1
- 239000007844 bleaching agent Substances 0.000 abstract 1
- 229920002301 cellulose acetate Polymers 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 239000011541 reaction mixture 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C409/00—Peroxy compounds
- C07C409/24—Peroxy compounds the —O—O— group being bound between a >C=O group and hydrogen, i.e. peroxy acids
- C07C409/26—Peracetic acid
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C407/00—Preparation of peroxy compounds
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Abstract
The invention concerns a process for the production of peracetic acid (CH<SUB>3</SUB>COOOH) for use in association with the bleaching or delignification of cellulose pulp and a method for the bleaching or delignification of cellulose pulp in which at least one treatment stage is used in which peracetic acid is batchwise added as the principal bleaching agent. The peracetic acid is formed according to the invention from a reaction between hydrogen peroxide H<SUB>2</SUB>O<SUB>2</SUB> and cellulose acetate AC in alkali conditions in the cellulose pulp. The complete reaction mixture is subsequently acidified and allowed to react with the cellulose pulp in a Paa stage. A reduced COD load is achieved through the invention, and equally good or better delignification and bleaching results are achieved as those achieved with the use of peracetic acid produced by another method. Residual products from the production process allow also the possibilities for modification of the properties of the fibres, through increased pulp strength, and increased yield.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0600022A SE0600022L (en) | 2006-01-04 | 2006-01-04 | Process for the production of peracetic acid and the way of bleaching cellulose with peracetic acid |
| PCT/SE2006/050607 WO2007078247A1 (en) | 2006-01-04 | 2006-12-20 | A process for the manufacture of peracetic acid and a method to bleach chemical pulp with peracetic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0600022A SE0600022L (en) | 2006-01-04 | 2006-01-04 | Process for the production of peracetic acid and the way of bleaching cellulose with peracetic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE0600022L true SE0600022L (en) | 2007-07-05 |
Family
ID=38228510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE0600022A SE0600022L (en) | 2006-01-04 | 2006-01-04 | Process for the production of peracetic acid and the way of bleaching cellulose with peracetic acid |
Country Status (2)
| Country | Link |
|---|---|
| SE (1) | SE0600022L (en) |
| WO (1) | WO2007078247A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011113119A1 (en) | 2010-03-19 | 2011-09-22 | Fibria Celulose S/A | Process for the treatment of cellulose pulps, cellulose pulp thus obtained and use of biopolymer for treating cellulose pulps |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0634521A1 (en) * | 1993-07-16 | 1995-01-18 | Eka Nobel Ab | Method for bleaching lignocellulose-containing fibres |
| KR20020040768A (en) * | 1999-08-05 | 2002-05-30 | 스테리스 인코퍼레이티드 | Electrolytic synthesis of peracetic acid |
| GB9930175D0 (en) * | 1999-12-22 | 2000-02-09 | Warwick Int Group | Peroxyacid delivery process |
-
2006
- 2006-01-04 SE SE0600022A patent/SE0600022L/en not_active Application Discontinuation
- 2006-12-20 WO PCT/SE2006/050607 patent/WO2007078247A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2007078247A1 (en) | 2007-07-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NAV | Patent application has lapsed |