BR9105959A - Processo para o alvejamento de material ligno-celulosico - Google Patents
Processo para o alvejamento de material ligno-celulosicoInfo
- Publication number
- BR9105959A BR9105959A BR919105959A BR9105959A BR9105959A BR 9105959 A BR9105959 A BR 9105959A BR 919105959 A BR919105959 A BR 919105959A BR 9105959 A BR9105959 A BR 9105959A BR 9105959 A BR9105959 A BR 9105959A
- Authority
- BR
- Brazil
- Prior art keywords
- pulp
- ligno
- stage
- chlorine dioxide
- targeting
- Prior art date
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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9000340A SE9000340L (sv) | 1990-01-31 | 1990-01-31 | Foerfarande vid blekning av lignocellulosahaltigt material |
PCT/SE1991/000051 WO1991011554A1 (en) | 1990-01-31 | 1991-01-24 | Process for bleaching of ligno-cellulosic material |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9105959A true BR9105959A (pt) | 1992-10-13 |
Family
ID=20378411
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR919105959A BR9105959A (pt) | 1990-01-31 | 1991-01-24 | Processo para o alvejamento de material ligno-celulosico |
Country Status (12)
Country | Link |
---|---|
EP (1) | EP0500813B1 (sv) |
JP (1) | JPH0672385B2 (sv) |
AT (1) | ATE115208T1 (sv) |
AU (1) | AU7235691A (sv) |
BR (1) | BR9105959A (sv) |
CA (1) | CA2074715C (sv) |
ES (1) | ES2065007T3 (sv) |
FI (1) | FI923420A0 (sv) |
NO (1) | NO301177B1 (sv) |
PT (1) | PT96630B (sv) |
SE (1) | SE9000340L (sv) |
WO (1) | WO1991011554A1 (sv) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE502706E (sv) | 1994-04-05 | 1999-09-27 | 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. | |
CA2376528A1 (en) * | 1999-06-08 | 2000-12-14 | Nana Barde | Bleaching pulp with high-pressure o2 |
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 (sv) * | 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/sv not_active Application Discontinuation
-
1991
- 1991-01-24 EP EP91903930A patent/EP0500813B1/en not_active Revoked
- 1991-01-24 ES ES91903930T patent/ES2065007T3/es not_active Expired - Lifetime
- 1991-01-24 WO PCT/SE1991/000051 patent/WO1991011554A1/en not_active Application Discontinuation
- 1991-01-24 JP JP3504027A patent/JPH0672385B2/ja not_active Expired - Fee Related
- 1991-01-24 AT AT91903930T patent/ATE115208T1/de not_active IP Right Cessation
- 1991-01-24 AU AU72356/91A patent/AU7235691A/en not_active Abandoned
- 1991-01-24 CA CA002074715A patent/CA2074715C/en 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 NO NO922995A patent/NO301177B1/no unknown
- 1992-07-29 FI FI923420A patent/FI923420A0/fi unknown
Also Published As
Publication number | Publication date |
---|---|
FI923420A (fi) | 1992-07-29 |
NO922995L (no) | 1992-09-15 |
EP0500813A1 (en) | 1992-09-02 |
NO922995D0 (no) | 1992-07-29 |
NO301177B1 (no) | 1997-09-22 |
SE9000340D0 (sv) | 1990-01-31 |
AU7235691A (en) | 1991-08-21 |
JPH0672385B2 (ja) | 1994-09-14 |
FI923420A0 (fi) | 1992-07-29 |
SE9000340L (sv) | 1991-08-01 |
ATE115208T1 (de) | 1994-12-15 |
CA2074715A1 (en) | 1991-08-01 |
JPH04507118A (ja) | 1992-12-10 |
CA2074715C (en) | 2000-09-05 |
PT96630B (pt) | 2001-05-31 |
PT96630A (pt) | 1991-10-15 |
WO1991011554A1 (en) | 1991-08-08 |
EP0500813B1 (en) | 1994-12-07 |
ES2065007T3 (es) | 1995-02-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FB36 | Technical and formal requirements: requirement - article 36 of industrial property law | ||
FF | Decision: intention to grant | ||
FG9A | Patent or certificate of addition granted | ||
B21A | Patent or certificate of addition expired [chapter 21.1 patent gazette] |
Free format text: PATENTE EXTINTA EM 24/01/2011 |