ES2065007T3 - Procedimiento para blanquear material lignocelulosico. - Google Patents
Procedimiento para blanquear material lignocelulosico.Info
- Publication number
- ES2065007T3 ES2065007T3 ES91903930T ES91903930T ES2065007T3 ES 2065007 T3 ES2065007 T3 ES 2065007T3 ES 91903930 T ES91903930 T ES 91903930T ES 91903930 T ES91903930 T ES 91903930T ES 2065007 T3 ES2065007 T3 ES 2065007T3
- Authority
- ES
- Spain
- Prior art keywords
- pulp
- stage
- procedure
- chlorine dioxide
- lignocellulosic material
- 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
- D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
-
- 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
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
- D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
- D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process
-
- 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
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
- Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
ESTA INVENCION DESCRIBE UN PROCESO PARA BLANQUEAR PULPA LIGNO-CELULOSICA DIGERIDA MEDIANTE UN PROCESO QUIMICO PARA LA FORMACION REDUCIDA DE COMPUESTO CLORO-ORGANICO, MIENTRAS QUE MANTIENE EL BRILLO FINAL Y LAS PROPIEDADES DE RESISTENCIA DE LA PULPA, TRATANDO LA PULPA EN UNA PRIMERA FASE CON SOLAMENTE DIOXIDO DE CLORO EN UN FACTOR DE CARGA DE HASTA 2.0, EN CONSECUENCIA LA PULPA ES TRATADA EN UNA FASE DE EXTRACCION ALCALINA REFORZADA CON DESDE 3.0 KG DE PEROXIDO DE HIDROGENO/TONELADA DE PULPA. DESPUES DEL TRATAMIENTO DE DOS FASES, LA PULPA PUEDE BLANQUEARSE FINALMENTE A LA BRILLANTEZ DESEADA EN UNA O MAS ETAPAS DE DIOXIDO DE CLORO.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9000340A SE9000340L (sv) | 1990-01-31 | 1990-01-31 | Foerfarande vid blekning av lignocellulosahaltigt material |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2065007T3 true ES2065007T3 (es) | 1995-02-01 |
Family
ID=20378411
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES91903930T Expired - Lifetime ES2065007T3 (es) | 1990-01-31 | 1991-01-24 | Procedimiento para blanquear material lignocelulosico. |
Country Status (12)
Country | Link |
---|---|
EP (1) | EP0500813B1 (es) |
JP (1) | JPH0672385B2 (es) |
AT (1) | ATE115208T1 (es) |
AU (1) | AU7235691A (es) |
BR (1) | BR9105959A (es) |
CA (1) | CA2074715C (es) |
ES (1) | ES2065007T3 (es) |
FI (1) | FI923420A (es) |
NO (1) | NO301177B1 (es) |
PT (1) | PT96630B (es) |
SE (1) | SE9000340L (es) |
WO (1) | WO1991011554A1 (es) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE502706E (sv) | 1994-04-05 | 1999-06-18 | Mo Och Domsjoe Ab | Framställnng av blekt cellulosamassa genom blekning med klordioxid och behandling av komplexbildare i samma steg |
SE514697C2 (sv) * | 1994-08-31 | 2001-04-02 | Valmet Fibertech Ab | Eliminering av metalljoner vid blekning av massa |
BR9901291B1 (pt) | 1999-04-27 | 2011-11-01 | processo para branqueamento de polpas quìmicas de baixa consistência. | |
EP1244840A4 (en) * | 1999-06-08 | 2003-04-16 | Eastern Pulp And Paper Corp | HIGH PRESSURE OXYGEN BLEACHING OF A PULP |
WO2002099186A1 (en) * | 2001-06-06 | 2002-12-12 | Kvaerner Pulping Ab | Reduction of organically bound chlorine formed in chlorine dioxide bleaching |
US8920603B2 (en) | 2006-10-11 | 2014-12-30 | Akzo Nobel N.V. | Bleaching of pulp |
US20090000751A1 (en) * | 2007-06-29 | 2009-01-01 | Caifang Yin | Bleaching process with at least one extraction stage |
RU2445415C1 (ru) * | 2010-11-18 | 2012-03-20 | Государственное образовательное учреждение высшего профессионального образования "Пермский государственный технический университет" | Способ отбелки сульфатной целлюлозы |
SE1650050A1 (en) * | 2016-01-18 | 2017-04-25 | Valmet Oy | Chlorine dioxide stage for controlling viscosity in dissolving pulps |
FR3062138B1 (fr) * | 2017-01-23 | 2019-06-07 | Centre Technique De L'industrie Des Papiers, Cartons Et Celluloses | Procede de blanchiment d'une pate a papier |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1100709A (en) * | 1965-06-25 | 1968-01-24 | Pulp Paper Res Inst | Two-stage purification of fibrous cellulose material |
US3720577A (en) * | 1970-05-25 | 1973-03-13 | Int Paper Co | Chlorine dioxide-peracetic acid-chlorine dioxide pulp bleaching sequence |
CA1056558A (en) * | 1974-06-11 | 1979-06-19 | Canadian Industries Limited | Strenghtening of mechanical pulp by chemical treatment |
JPS5249305A (en) * | 1975-10-16 | 1977-04-20 | Mitsubishi Gas Chemical Co | Finishing process for pulp bleached with oxygen |
JPS5328523A (en) * | 1976-08-30 | 1978-03-16 | Hitachi Metals Ltd | Method of horizontally continuously casting roll and roller |
SE7613827L (sv) * | 1976-12-09 | 1978-06-10 | Sca Development Ab | Sett att behandla lignocellulosahaltigt material. |
FR2416297A1 (fr) * | 1978-01-31 | 1979-08-31 | Europeen Cellulose | Procede anti-polluant de blanchiment de pate a papier |
US4568420B1 (en) * | 1984-12-03 | 1999-03-02 | Int Paper Co | Multi-stage bleaching process including an enhanced oxidative extraction stage |
JPH01168985A (ja) * | 1987-12-22 | 1989-07-04 | Oji Paper Co Ltd | リグノセルロース物質の漂白方法 |
-
1990
- 1990-01-31 SE SE9000340A patent/SE9000340L/ not_active Application Discontinuation
-
1991
- 1991-01-24 AU AU72356/91A patent/AU7235691A/en not_active Abandoned
- 1991-01-24 JP JP3504027A patent/JPH0672385B2/ja not_active Expired - Fee Related
- 1991-01-24 CA CA002074715A patent/CA2074715C/en not_active Expired - Lifetime
- 1991-01-24 WO PCT/SE1991/000051 patent/WO1991011554A1/en not_active Application Discontinuation
- 1991-01-24 EP EP91903930A patent/EP0500813B1/en not_active Revoked
- 1991-01-24 AT AT91903930T patent/ATE115208T1/de not_active IP Right Cessation
- 1991-01-24 ES ES91903930T patent/ES2065007T3/es not_active Expired - Lifetime
- 1991-01-24 BR BR919105959A patent/BR9105959A/pt not_active IP Right Cessation
- 1991-01-31 PT PT96630A patent/PT96630B/pt not_active IP Right Cessation
-
1992
- 1992-07-29 FI FI923420A patent/FI923420A/fi unknown
- 1992-07-29 NO NO922995A patent/NO301177B1/no unknown
Also Published As
Publication number | Publication date |
---|---|
NO922995L (no) | 1992-09-15 |
CA2074715A1 (en) | 1991-08-01 |
FI923420A0 (fi) | 1992-07-29 |
BR9105959A (pt) | 1992-10-13 |
ATE115208T1 (de) | 1994-12-15 |
PT96630A (pt) | 1991-10-15 |
EP0500813A1 (en) | 1992-09-02 |
FI923420A (fi) | 1992-07-29 |
NO922995D0 (no) | 1992-07-29 |
SE9000340L (sv) | 1991-08-01 |
EP0500813B1 (en) | 1994-12-07 |
PT96630B (pt) | 2001-05-31 |
AU7235691A (en) | 1991-08-21 |
JPH0672385B2 (ja) | 1994-09-14 |
NO301177B1 (no) | 1997-09-22 |
SE9000340D0 (sv) | 1990-01-31 |
CA2074715C (en) | 2000-09-05 |
WO1991011554A1 (en) | 1991-08-08 |
JPH04507118A (ja) | 1992-12-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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