ES2153593T3 - Tratamiento de una pasta papelera con un agente quelatante en al menos dos etapas de mezclamiento sin lavado intermedio. - Google Patents
Tratamiento de una pasta papelera con un agente quelatante en al menos dos etapas de mezclamiento sin lavado intermedio.Info
- Publication number
- ES2153593T3 ES2153593T3 ES96928765T ES96928765T ES2153593T3 ES 2153593 T3 ES2153593 T3 ES 2153593T3 ES 96928765 T ES96928765 T ES 96928765T ES 96928765 T ES96928765 T ES 96928765T ES 2153593 T3 ES2153593 T3 ES 2153593T3
- Authority
- ES
- Spain
- Prior art keywords
- chelating agent
- mixing
- stages
- treatment
- intermediate washing
- 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
- D21C9/1026—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)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Cosmetics (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Detergent Compositions (AREA)
Abstract
METODO DE BLANQUEO DE LA PULPA SIN USAR CLORO, DONDE LOS METALES SE ELIMINAN MEDIANTE UN AGENTE QUELANTE. ESTE AGENTE SE MEZCLA CON LA PULPA EN UN MINIMO DE DOS FASES POSTERIORES SIN UN LAVADO INTERMEDIO. LOS TIEMPOS DE ESPERA ENTRE LAS FASES DE MEZCLADO DEBEN SER INFERIORES A 15 MINUTOS, Y LA PULPA SE LAVA DESPUES DE LA ULTIMA FASE DE MEZCLADO.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9502962A SE504803C2 (sv) | 1995-08-24 | 1995-08-24 | Behandling av massa med komplexbildare i minst två blandningssteg utan mellanliggande tvätt |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2153593T3 true ES2153593T3 (es) | 2001-03-01 |
Family
ID=20399294
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES96928765T Expired - Lifetime ES2153593T3 (es) | 1995-08-24 | 1996-08-09 | Tratamiento de una pasta papelera con un agente quelatante en al menos dos etapas de mezclamiento sin lavado intermedio. |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0846199B1 (es) |
AT (1) | ATE198916T1 (es) |
AU (1) | AU6839996A (es) |
BR (1) | BR9610199A (es) |
CA (1) | CA2229212A1 (es) |
DE (1) | DE69611680T2 (es) |
ES (1) | ES2153593T3 (es) |
NO (1) | NO980753L (es) |
PT (1) | PT846199E (es) |
SE (1) | SE504803C2 (es) |
WO (1) | WO1997008380A1 (es) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE508239C2 (sv) * | 1997-01-03 | 1998-09-21 | Sunds Defibrator Ind Ab | Behandling av massa med komplexbildare i minst ett blandningssteg, utan användning av blektorn |
WO2009154898A1 (en) | 2008-06-20 | 2009-12-23 | International Paper Company | Composition and recording sheet with improved optical properties |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE97179T1 (de) * | 1989-06-06 | 1993-11-15 | Eka Nobel Ab | Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen. |
SE9201477L (sv) * | 1992-05-11 | 1993-06-28 | Kamyr Ab | Saett vid blekning av massa utan anvaendning av klorkemikalier |
SE502665C2 (sv) * | 1993-06-11 | 1995-12-04 | Kvaerner Pulping Tech | Sätt och reaktor för ozonblekning |
SE501836C2 (sv) * | 1993-09-21 | 1995-05-22 | Sunds Defibrator Ind Ab | Blekning av kemisk massa varvid massan behandlas med komplexbildare före och efter ett ozonsteg |
-
1995
- 1995-08-24 SE SE9502962A patent/SE504803C2/sv not_active IP Right Cessation
-
1996
- 1996-08-09 AU AU68399/96A patent/AU6839996A/en not_active Abandoned
- 1996-08-09 ES ES96928765T patent/ES2153593T3/es not_active Expired - Lifetime
- 1996-08-09 WO PCT/SE1996/000996 patent/WO1997008380A1/en active IP Right Grant
- 1996-08-09 CA CA002229212A patent/CA2229212A1/en not_active Abandoned
- 1996-08-09 BR BR9610199A patent/BR9610199A/pt not_active Application Discontinuation
- 1996-08-09 EP EP96928765A patent/EP0846199B1/en not_active Expired - Lifetime
- 1996-08-09 AT AT96928765T patent/ATE198916T1/de not_active IP Right Cessation
- 1996-08-09 PT PT96928765T patent/PT846199E/pt unknown
- 1996-08-09 DE DE69611680T patent/DE69611680T2/de not_active Expired - Fee Related
-
1998
- 1998-02-23 NO NO980753A patent/NO980753L/no not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
CA2229212A1 (en) | 1997-03-06 |
SE504803C2 (sv) | 1997-04-28 |
NO980753D0 (no) | 1998-02-23 |
WO1997008380A1 (en) | 1997-03-06 |
DE69611680D1 (de) | 2001-03-01 |
SE9502962L (sv) | 1997-02-25 |
EP0846199A1 (en) | 1998-06-10 |
ATE198916T1 (de) | 2001-02-15 |
AU6839996A (en) | 1997-03-19 |
DE69611680T2 (de) | 2001-05-10 |
NO980753L (no) | 1998-02-24 |
PT846199E (pt) | 2001-06-29 |
EP0846199B1 (en) | 2001-01-24 |
SE9502962D0 (sv) | 1995-08-24 |
BR9610199A (pt) | 1998-08-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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