ES2086272T3 - Procedimiento de blanqueo de pasta de papel mediante ozono. - Google Patents
Procedimiento de blanqueo de pasta de papel mediante ozono.Info
- Publication number
- ES2086272T3 ES2086272T3 ES94922284T ES94922284T ES2086272T3 ES 2086272 T3 ES2086272 T3 ES 2086272T3 ES 94922284 T ES94922284 T ES 94922284T ES 94922284 T ES94922284 T ES 94922284T ES 2086272 T3 ES2086272 T3 ES 2086272T3
- Authority
- ES
- Spain
- Prior art keywords
- ozone
- paper pulp
- pulp bleaching
- degrees
- bleaching procedure
- 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.)
- Expired - Lifetime
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
- D21C9/147—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)
Abstract
PROCESO DE BLANQUEAMIENTO DE PASTA DE PAPEL CRUDA DE TIPO QUIMICO MEDIANTE OZONO CARACTERIZADO EN QUE NO APLICA MAS QUE UN ESTADIO DE OZONO EXCLUSIVAMENTE, EN PRESENCIA DE UN ALCOHOL TERCIARIO, QUE COMPRENDE DE CUATRO A OCHO ATOMOS DE CARBONO QUE ESTA INTRODUCIDO EN EL MEDIO DE REACCION MANTENIDO A UNA TEMPERATURA COMPRENDIDA ENTRE -5 (GRADOS) C Y 80 (GRADOS) C, PREVIAMENTE AL ESTADIO DE LA OZONIZACION PROPIAMENTE DICHO. CON EL FIN DE MEJORAR LA TRANSFERENCIA GAS-LIQUIDO, LA POTENICALIDAD DE INTERCAMBIO, LA SELECTIVIDAD DE LA OXIDACION DE LA LIGNINA Y LA EFICACIA DEL OZONO, LA CONSISTENCIA DE LA PASTA SOMETIDA A LA OZONIZACION QUE ESTA COMPRENDIDA ENTRE 6 Y 60%.
Applications Claiming Priority (1)
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. |
Publications (2)
Publication Number | Publication Date |
---|---|
ES2086272T1 ES2086272T1 (es) | 1996-07-01 |
ES2086272T3 true ES2086272T3 (es) | 1997-12-16 |
Family
ID=9449467
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES94922284T Expired - Lifetime ES2086272T3 (es) | 1993-07-21 | 1994-07-20 | Procedimiento de blanqueo de pasta de papel mediante ozono. |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0712453B1 (es) |
JP (1) | JPH09505357A (es) |
BR (1) | BR9407083A (es) |
CA (1) | CA2167605A1 (es) |
DE (2) | DE712453T1 (es) |
ES (1) | ES2086272T3 (es) |
FI (1) | FI960297A0 (es) |
FR (1) | FR2708010B1 (es) |
WO (1) | WO1995003448A1 (es) |
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 JP JP7504979A patent/JPH09505357A/ja active Pending
- 1994-07-20 DE DE0712453T patent/DE712453T1/de active Pending
- 1994-07-20 CA CA 2167605 patent/CA2167605A1/fr not_active Abandoned
- 1994-07-20 WO PCT/FR1994/000910 patent/WO1995003448A1/fr active IP Right Grant
- 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 DE DE69406457T patent/DE69406457T2/de not_active Expired - Fee Related
- 1994-07-20 BR BR9407083A patent/BR9407083A/pt not_active Application Discontinuation
-
1996
- 1996-01-22 FI FI960297A patent/FI960297A0/fi unknown
Also Published As
Publication number | Publication date |
---|---|
EP0712453A1 (fr) | 1996-05-22 |
DE712453T1 (de) | 1996-10-24 |
FI960297A (fi) | 1996-01-22 |
FR2708010A1 (fr) | 1995-01-27 |
DE69406457D1 (de) | 1997-11-27 |
ES2086272T1 (es) | 1996-07-01 |
FI960297A0 (fi) | 1996-01-22 |
JPH09505357A (ja) | 1997-05-27 |
BR9407083A (pt) | 1996-08-13 |
CA2167605A1 (fr) | 1995-02-02 |
EP0712453B1 (fr) | 1997-10-22 |
DE69406457T2 (de) | 1998-02-19 |
WO1995003448A1 (fr) | 1995-02-02 |
FR2708010B1 (fr) | 1995-09-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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