DE712453T1 - Ozonbleichverfahren uvon zellstoff - Google Patents
Ozonbleichverfahren uvon zellstoffInfo
- Publication number
- DE712453T1 DE712453T1 DE0712453T DE94922284T DE712453T1 DE 712453 T1 DE712453 T1 DE 712453T1 DE 0712453 T DE0712453 T DE 0712453T DE 94922284 T DE94922284 T DE 94922284T DE 712453 T1 DE712453 T1 DE 712453T1
- Authority
- DE
- Germany
- Prior art keywords
- process according
- bleaching process
- ozone
- pulp
- ozonization
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims 13
- 238000004061 bleaching Methods 0.000 title claims 12
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims 8
- AAEVYOVXGOFMJO-UHFFFAOYSA-N prometryn Chemical compound CSC1=NC(NC(C)C)=NC(NC(C)C)=N1 AAEVYOVXGOFMJO-UHFFFAOYSA-N 0.000 title 1
- 238000006385 ozonation reaction Methods 0.000 claims 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 3
- 125000004432 carbon atom Chemical group C* 0.000 claims 3
- 229910052760 oxygen Inorganic materials 0.000 claims 3
- 239000001301 oxygen Substances 0.000 claims 3
- 239000012429 reaction media Substances 0.000 claims 3
- 150000003509 tertiary alcohols Chemical class 0.000 claims 3
- 239000007787 solid Substances 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 239000002655 kraft paper Substances 0.000 claims 1
- 229920005610 lignin Polymers 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 238000002203 pretreatment Methods 0.000 claims 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 claims 1
- 230000007704 transition Effects 0.000 claims 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
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
- D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
-
- 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
- D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9308967A FR2708010B1 (fr) | 1993-07-21 | 1993-07-21 | Procédé de blanchiment de pâtes à papier par l'ozone. |
| PCT/FR1994/000910 WO1995003448A1 (fr) | 1993-07-21 | 1994-07-20 | Procede de blanchiment de pates a papier par l'ozone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE712453T1 true DE712453T1 (de) | 1996-10-24 |
Family
ID=9449467
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE69406457T Expired - Fee Related DE69406457T2 (de) | 1993-07-21 | 1994-07-20 | Ozonbleichverfahren für zellstoff |
| DE0712453T Pending DE712453T1 (de) | 1993-07-21 | 1994-07-20 | Ozonbleichverfahren uvon zellstoff |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE69406457T Expired - Fee Related DE69406457T2 (de) | 1993-07-21 | 1994-07-20 | Ozonbleichverfahren für zellstoff |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0712453B1 (fr) |
| JP (1) | JPH09505357A (fr) |
| BR (1) | BR9407083A (fr) |
| CA (1) | CA2167605A1 (fr) |
| DE (2) | DE69406457T2 (fr) |
| ES (1) | ES2086272T3 (fr) |
| FI (1) | FI960297A0 (fr) |
| FR (1) | FR2708010B1 (fr) |
| WO (1) | WO1995003448A1 (fr) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4229252A (en) * | 1979-01-11 | 1980-10-21 | Weyerhaeuser Company | Additives for ozone bleaching |
-
1993
- 1993-07-21 FR FR9308967A patent/FR2708010B1/fr not_active Expired - Fee Related
-
1994
- 1994-07-20 DE DE69406457T patent/DE69406457T2/de not_active Expired - Fee Related
- 1994-07-20 EP EP94922284A patent/EP0712453B1/fr not_active Expired - Lifetime
- 1994-07-20 ES ES94922284T patent/ES2086272T3/es not_active Expired - Lifetime
- 1994-07-20 JP JP7504979A patent/JPH09505357A/ja active Pending
- 1994-07-20 BR BR9407083A patent/BR9407083A/pt not_active Application Discontinuation
- 1994-07-20 WO PCT/FR1994/000910 patent/WO1995003448A1/fr active IP Right Grant
- 1994-07-20 DE DE0712453T patent/DE712453T1/de active Pending
- 1994-07-20 CA CA 2167605 patent/CA2167605A1/fr not_active Abandoned
-
1996
- 1996-01-22 FI FI960297A patent/FI960297A0/fi unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ES2086272T3 (es) | 1997-12-16 |
| BR9407083A (pt) | 1996-08-13 |
| FI960297A (fi) | 1996-01-22 |
| CA2167605A1 (fr) | 1995-02-02 |
| EP0712453B1 (fr) | 1997-10-22 |
| DE69406457D1 (de) | 1997-11-27 |
| FR2708010B1 (fr) | 1995-09-22 |
| EP0712453A1 (fr) | 1996-05-22 |
| DE69406457T2 (de) | 1998-02-19 |
| WO1995003448A1 (fr) | 1995-02-02 |
| FR2708010A1 (fr) | 1995-01-27 |
| ES2086272T1 (es) | 1996-07-01 |
| JPH09505357A (ja) | 1997-05-27 |
| FI960297A0 (fi) | 1996-01-22 |
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