FI103817B1 - Menetelmä peroksidilla valkaistavan massan esikäsittelemiseksi - Google Patents
Menetelmä peroksidilla valkaistavan massan esikäsittelemiseksiInfo
- Publication number
- FI103817B1 FI103817B1 FI950749A FI950749A FI103817B1 FI 103817 B1 FI103817 B1 FI 103817B1 FI 950749 A FI950749 A FI 950749A FI 950749 A FI950749 A FI 950749A FI 103817 B1 FI103817 B1 FI 103817B1
- Authority
- FI
- Finland
- Prior art keywords
- bleached
- peroxide
- pretreating
- pulp
- pretreating pulp
- 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
- D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
-
- 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)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI950749A FI103817B1 (fi) | 1995-02-17 | 1995-02-17 | Menetelmä peroksidilla valkaistavan massan esikäsittelemiseksi |
SE9502087A SE516688E (sv) | 1995-02-17 | 1995-06-07 | Behandling av massa före peroxidblekning med syra och komplexbildare |
FI953343A FI103819B1 (fi) | 1995-02-17 | 1995-07-06 | Menetelmä peroksidilla valkaistavan massan esikäsittelemiseksi |
EP96902301A EP0858526A1 (en) | 1995-02-17 | 1996-02-16 | Method of pretreating pulp to be bleached with peroxide |
PCT/FI1996/000090 WO1996025552A1 (en) | 1995-02-17 | 1996-02-16 | Method of pretreating pulp to be bleached with peroxide |
US08/875,424 US6736934B1 (en) | 1995-02-17 | 1996-02-16 | Method of pretreating pulp in an acid tower prior to bleaching with peroxide |
CA002211223A CA2211223C (en) | 1995-02-17 | 1996-02-16 | Method of pretreating pulp to be bleached with peroxide |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI950749 | 1995-02-17 | ||
FI950749A FI103817B1 (fi) | 1995-02-17 | 1995-02-17 | Menetelmä peroksidilla valkaistavan massan esikäsittelemiseksi |
Publications (4)
Publication Number | Publication Date |
---|---|
FI950749A0 FI950749A0 (fi) | 1995-02-17 |
FI950749A FI950749A (fi) | 1996-08-18 |
FI103817B FI103817B (fi) | 1999-09-30 |
FI103817B1 true FI103817B1 (fi) | 1999-09-30 |
Family
ID=8542888
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI950749A FI103817B1 (fi) | 1995-02-17 | 1995-02-17 | Menetelmä peroksidilla valkaistavan massan esikäsittelemiseksi |
Country Status (2)
Country | Link |
---|---|
FI (1) | FI103817B1 (fi) |
SE (1) | SE516688E (fi) |
-
1995
- 1995-02-17 FI FI950749A patent/FI103817B1/fi active
- 1995-06-07 SE SE9502087A patent/SE516688E/sv unknown
Also Published As
Publication number | Publication date |
---|---|
FI103817B (fi) | 1999-09-30 |
SE516688E (sv) | 2003-12-16 |
SE9502087L (sv) | 1996-08-18 |
FI950749A (fi) | 1996-08-18 |
SE516688C2 (sv) | 2002-02-12 |
FI950749A0 (fi) | 1995-02-17 |
SE9502087D0 (sv) | 1995-06-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
GB | Transfer or assigment of application |
Owner name: AHLSTROM MACHINERY OY |
|
FCK | Appeal rejected |
Free format text: APPLICATION REJECTED |