ES2091121T3 - Procedimiento para blanquear pasta que contiene lignocelulosa. - Google Patents
Procedimiento para blanquear pasta que contiene lignocelulosa.Info
- Publication number
- ES2091121T3 ES2091121T3 ES94901142T ES94901142T ES2091121T3 ES 2091121 T3 ES2091121 T3 ES 2091121T3 ES 94901142 T ES94901142 T ES 94901142T ES 94901142 T ES94901142 T ES 94901142T ES 2091121 T3 ES2091121 T3 ES 2091121T3
- Authority
- ES
- Spain
- Prior art keywords
- pulp
- bleaching
- brightness
- stages
- 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
- D21C9/1026—Other features in bleaching processes
- D21C9/1042—Use of chelating 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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Abstract
EL PRESENTE INVENTO SE REFIERE A UN PROCESO PARA BLANQUEAR PULPA CON LIGNOCELULOSA, EN EL QUE LA PULPA PRIMERO SE TRATA CON UN AGENTE DE COMPLICACION, Y ENTONCES SE DELIGNIFICA CON UN PERACIDO ORGANICO O SU SAL, BLANQUEADO POSTERIORMENTE CON UN COMPONENTE CON PEROXIDO, OZONO O DITIONITA DE SODIO. TRAS EL BLANQUEO, LA PULPA SE BAÑA CON UN PH APROXIMADO DE 4. POR CONVENIENCIA, LA DELIGNIFICACION SE LLEVA A CABO CON ACIDO PERACETICO MUY OXIDANTE, PRODUCIENDO UN CONSIDERABLE AUMENTO EN BRILLANTEZ Y UNA CONSIDERABLE REDUCCION DEL NUMERO KAPPA TRAS DICHO BLANQUEO. EL EFECTO DE AUMENTO DE BRILLANTEZ ES ALTAMENTE SELECTIVO, ES DECIR, LA VISCOSIDAD DE LA PULPA SE MANTIENE EN UNA EXTENSION COMPARATIVAMENTE GRANDE. MEDIANTE UNA ADECUADA ELECCION DE PH EN TODAS LAS ETAPAS TRAS EL BLANQUEO SIN CLORO, LOS IONES DE METAL PROVECHOSOS SE RETIENEN EN LA PULPA, MIENTRAS QUE AL MISMO TIEMPO EL AJUSTE DE PH EN TODAS LAS ETAPAS SE MINIMIZA Y LOS RESULTANTES LIQUIDOS DE BLANQUEO GASTADOS SE USAN DE FORMA VENTAJOSA INTERNAMENTE, POR EJ., PARA LAVADO DE PULPA.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9203584A SE9203584D0 (sv) | 1992-11-27 | 1992-11-27 | Foerfarande foer blekning av lignocellulosahaltig massa |
SE9300225A SE9300225D0 (sv) | 1993-01-26 | 1993-01-26 | Foerfarande foer blekning av lignocellulosahaltig massa |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2091121T3 true ES2091121T3 (es) | 1996-10-16 |
Family
ID=26661599
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES94901142T Expired - Lifetime ES2091121T3 (es) | 1992-11-27 | 1993-11-25 | Procedimiento para blanquear pasta que contiene lignocelulosa. |
Country Status (16)
Country | Link |
---|---|
EP (1) | EP0670929B2 (es) |
JP (1) | JPH08503749A (es) |
AT (1) | ATE141972T1 (es) |
AU (1) | AU671337B2 (es) |
BR (1) | BR9307520A (es) |
CA (1) | CA2149649C (es) |
CZ (1) | CZ285246B6 (es) |
DE (1) | DE69304342T3 (es) |
ES (1) | ES2091121T3 (es) |
FI (1) | FI118572B (es) |
MX (1) | MX9307413A (es) |
NO (1) | NO306737B1 (es) |
NZ (1) | NZ258273A (es) |
PL (1) | PL309190A1 (es) |
RU (1) | RU2097463C1 (es) |
WO (1) | WO1994012722A1 (es) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1007757A3 (fr) * | 1993-11-10 | 1995-10-17 | Solvay Interox | Procede pour le blanchiment d'une pate a papier chimique. |
US5656130A (en) * | 1995-04-28 | 1997-08-12 | Union Camp Holding, Inc. | Ambient temperature pulp bleaching with peroxyacid salts |
USH1690H (en) * | 1995-07-20 | 1997-11-04 | Nye; Jeffrey | Process for bleaching kraft pulp |
SE9503004L (sv) * | 1995-08-30 | 1997-03-01 | Sunds Defibrator Ind Ab | Blekning av massa |
DE19704054C2 (de) | 1997-02-04 | 2000-08-10 | Stockhausen Chem Fab Gmbh | Verfahren zur Herstellung von Faserstoffen mit verbesserten Eigenschaften |
US6702921B2 (en) * | 2001-05-01 | 2004-03-09 | Ondeo Nalco Company | Methods to enhance pulp bleaching and delignification using an organic sulfide chelating agent |
EP1607519B1 (en) | 2004-06-14 | 2008-02-20 | Warwick International Group Limited | Activator for pulp bleaching |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2219505C3 (de) † | 1972-04-21 | 1974-10-17 | Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt | Chlorfreie Mehrstufenbleiche von Zellstoff |
DE3005947B1 (de) † | 1980-02-16 | 1981-01-29 | Degussa | Verfahren zur Bleiche von Zellstoffen mittels organischer Persaeure |
JPS5721591A (en) † | 1980-07-11 | 1982-02-04 | Mitsubishi Gas Chemical Co | Peroxide bleaching of wood pulp |
ATE97179T1 (de) * | 1989-06-06 | 1993-11-15 | Eka Nobel Ab | Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen. |
US5091054A (en) * | 1989-08-18 | 1992-02-25 | Degussa Corporation | Process for bleaching and delignification of lignocellulosic |
BE1004674A3 (fr) * | 1991-03-11 | 1993-01-12 | Interox Internat Sa | Procede pour le blanchiment d'une pate a papier chimique et application de ce procede au blanchiment d'une pate kraft. |
DE4114135A1 (de) † | 1991-04-30 | 1992-11-05 | Sueddeutsche Kalkstickstoff | Verfahren zur chlorfreien bleiche und delignifizierung von alkalizellstoff |
EP0844328A3 (fr) * | 1991-10-04 | 1998-07-15 | Solvay Interox, Inc. | Procédé pour l'amélioration de la sélectivité de la délignification d'une pâte à papier chimique |
BE1006057A3 (fr) † | 1992-07-06 | 1994-05-03 | Solvay Interox | Procede pour la delignification d'une pate a papier chimique. |
-
1993
- 1993-11-25 CA CA002149649A patent/CA2149649C/en not_active Expired - Fee Related
- 1993-11-25 BR BR9307520-0A patent/BR9307520A/pt not_active IP Right Cessation
- 1993-11-25 AU AU55831/94A patent/AU671337B2/en not_active Ceased
- 1993-11-25 CZ CZ951328A patent/CZ285246B6/cs not_active IP Right Cessation
- 1993-11-25 DE DE69304342T patent/DE69304342T3/de not_active Expired - Fee Related
- 1993-11-25 PL PL93309190A patent/PL309190A1/xx unknown
- 1993-11-25 ES ES94901142T patent/ES2091121T3/es not_active Expired - Lifetime
- 1993-11-25 WO PCT/SE1993/001018 patent/WO1994012722A1/en active IP Right Grant
- 1993-11-25 RU RU9595113460A patent/RU2097463C1/ru active
- 1993-11-25 JP JP6513051A patent/JPH08503749A/ja active Pending
- 1993-11-25 MX MX9307413A patent/MX9307413A/es not_active IP Right Cessation
- 1993-11-25 EP EP94901142A patent/EP0670929B2/en not_active Expired - Lifetime
- 1993-11-25 NZ NZ258273A patent/NZ258273A/en unknown
- 1993-11-25 AT AT94901142T patent/ATE141972T1/de not_active IP Right Cessation
-
1995
- 1995-05-24 FI FI952551A patent/FI118572B/fi active IP Right Grant
- 1995-05-26 NO NO952074A patent/NO306737B1/no not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0670929B1 (en) | 1996-08-28 |
DE69304342D1 (de) | 1996-10-02 |
FI952551A (fi) | 1995-05-24 |
NO306737B1 (no) | 1999-12-13 |
FI952551A0 (fi) | 1995-05-24 |
AU5583194A (en) | 1994-06-22 |
CZ285246B6 (cs) | 1999-06-16 |
FI118572B (fi) | 2007-12-31 |
DE69304342T3 (de) | 2004-07-01 |
NO952074L (no) | 1995-07-26 |
ATE141972T1 (de) | 1996-09-15 |
PL309190A1 (en) | 1995-09-18 |
BR9307520A (pt) | 1999-08-31 |
NZ258273A (en) | 1996-08-27 |
AU671337B2 (en) | 1996-08-22 |
WO1994012722A1 (en) | 1994-06-09 |
DE69304342T2 (de) | 1997-03-06 |
EP0670929B2 (en) | 2003-10-22 |
RU95113460A (ru) | 1996-12-27 |
RU2097463C1 (ru) | 1997-11-27 |
MX9307413A (es) | 1994-07-29 |
CZ132895A3 (en) | 1996-01-17 |
JPH08503749A (ja) | 1996-04-23 |
NO952074D0 (no) | 1995-05-26 |
EP0670929A1 (en) | 1995-09-13 |
CA2149649C (en) | 2000-09-19 |
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BR9201553A (pt) | Processo para a deslignificacao e alvejamento de polpa contendo ligno-celulose quimicamente digerida | |
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ES2038097T5 (es) | Procedimiento para blanquear pastas papeleras que contienen lignocelulosa. | |
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NZ237866A (en) | Process for delignifying and bleaching cellulose pulp wherein there is a reduced formation and discharge of halogenated organic compounds in the waste liquor; pulp treated with a trace metal complexing agent and then with a peroxide agent | |
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ES2091121T3 (es) | Procedimiento para blanquear pasta que contiene lignocelulosa. | |
SE9203366L (sv) | Förfarande vid delignifiering och/eller blekning av cellulosamassa | |
RU95114367A (ru) | Способ делигнификации и отбеливания лигноцеллюлозосодержащей пульпы | |
SE9502087L (sv) | Förfarande för förbehandling av massa som skall blekas med peroxid |
Legal Events
Date | Code | Title | Description |
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FG2A | Definitive protection |
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