SE9900178L - Avlägsnande av övergångsmetalljoner från trämassefibrer - Google Patents
Avlägsnande av övergångsmetalljoner från trämassefibrerInfo
- Publication number
- SE9900178L SE9900178L SE9900178A SE9900178A SE9900178L SE 9900178 L SE9900178 L SE 9900178L SE 9900178 A SE9900178 A SE 9900178A SE 9900178 A SE9900178 A SE 9900178A SE 9900178 L SE9900178 L SE 9900178L
- Authority
- SE
- Sweden
- Prior art keywords
- pulp
- metal ions
- removal
- manganese
- dtpa
- 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
- D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
-
- 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
- D21C9/1042—Use of chelating agents
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US2586598A | 1998-02-19 | 1998-02-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
SE9900178D0 SE9900178D0 (sv) | 1999-01-21 |
SE9900178L true SE9900178L (sv) | 1999-08-20 |
Family
ID=21828470
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9900178A SE9900178L (sv) | 1998-02-19 | 1999-01-21 | Avlägsnande av övergångsmetalljoner från trämassefibrer |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPH11279966A (sv) |
CA (1) | CA2258387A1 (sv) |
FI (1) | FI990278A (sv) |
SE (1) | SE9900178L (sv) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4973284B2 (ja) * | 2007-03-30 | 2012-07-11 | 栗田工業株式会社 | パルプ洗浄剤、パルプ製造方法、及びパルプ洗浄方法 |
-
1999
- 1999-01-06 CA CA002258387A patent/CA2258387A1/en not_active Withdrawn
- 1999-01-21 SE SE9900178A patent/SE9900178L/sv not_active Application Discontinuation
- 1999-02-12 FI FI990278A patent/FI990278A/sv unknown
- 1999-02-15 JP JP11035146A patent/JPH11279966A/ja not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
JPH11279966A (ja) | 1999-10-12 |
FI990278A (sv) | 1999-08-20 |
SE9900178D0 (sv) | 1999-01-21 |
CA2258387A1 (en) | 1999-08-19 |
FI990278A0 (sv) | 1999-02-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2121387A1 (en) | Method for Bleaching Lignocellulose-Containing Pulp | |
AU2964497A (en) | Process for the bleaching of chemical pulp | |
ID19415A (id) | Proses pemutihan bubur kayu | |
SE9700992D0 (sv) | Method of bleaching kraft pulp | |
AU7266891A (en) | Process for the preparation of bleached high-yield pulps | |
SE9900178L (sv) | Avlägsnande av övergångsmetalljoner från trämassefibrer | |
SE0301773D0 (sv) | Alkaline extraction stages comprising xylanase | |
EP0778909B1 (en) | Pulp bleaching | |
US20060081346A1 (en) | Peroxide bleaching of wood pulp | |
EP0846199B1 (en) | Treatment of pulp with chelating agent in at least two mixing steps without intermediate washing | |
RU96114250A (ru) | Способ получения древесной массы | |
TH29376A (th) | กรรมวิธีการฟอกเยื่อกระดาษ | |
WO2001083881A2 (en) | Peroxide bleaching of wood pulp | |
SE9704273D0 (sv) | Nytt förfarande vid framställning av kemisk massa |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |