BR9803865A - Processo para alvejamento de polpas de papel químico - Google Patents
Processo para alvejamento de polpas de papel químicoInfo
- Publication number
- BR9803865A BR9803865A BR9803865-6A BR9803865A BR9803865A BR 9803865 A BR9803865 A BR 9803865A BR 9803865 A BR9803865 A BR 9803865A BR 9803865 A BR9803865 A BR 9803865A
- Authority
- BR
- Brazil
- Prior art keywords
- paper pulp
- carbon paper
- bleaching
- bleaching carbon
- pulps
- 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
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
-
- 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
-
- 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)
Abstract
Patente de Invenção: <B>"PROCESSO PARA O ALVEJAMENTO DE POLPAS DE PAPEL QUìMICO"<D>. A presente invenção refere-se a um processo para o alvejamento de polpas de papel químico, de acordo com o qual as polpas, após cozimento e opcionalmente pré-alvejamento, são submetidas a pelo menos um tratamento com dióxido de cloro na presença de oxigênio.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9712367A FR2769327B1 (fr) | 1997-10-03 | 1997-10-03 | Procede de blanchiment de pates a papier chimiques |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9803865A true BR9803865A (pt) | 1999-12-07 |
Family
ID=9511814
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9803865-6A BR9803865A (pt) | 1997-10-03 | 1998-10-02 | Processo para alvejamento de polpas de papel químico |
Country Status (12)
Country | Link |
---|---|
EP (1) | EP0906987A1 (pt) |
JP (1) | JPH11152693A (pt) |
KR (1) | KR19990036671A (pt) |
CN (1) | CN1213722A (pt) |
AU (1) | AU8787798A (pt) |
BR (1) | BR9803865A (pt) |
CA (1) | CA2246569A1 (pt) |
FR (1) | FR2769327B1 (pt) |
ID (1) | ID21153A (pt) |
MA (1) | MA24659A1 (pt) |
NO (1) | NO984593L (pt) |
ZA (1) | ZA988300B (pt) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101105011B (zh) * | 2004-01-17 | 2010-05-12 | 梅秀泉 | 一种氧脱木素和漂白一体化制浆方法及实现该方法的装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2706673A (en) * | 1951-10-19 | 1955-04-19 | Elmer R Burling | Method of bleaching with chlorine dioxide |
DK0651832T3 (da) * | 1991-08-23 | 1998-05-11 | Olin Corp | Fremgangsmåde til gasfasedelignificering af træfibermasse |
WO1996015317A1 (en) * | 1994-11-10 | 1996-05-23 | Olin Corporation | Process for gas phase chlorine dioxide delignification |
-
1997
- 1997-10-03 FR FR9712367A patent/FR2769327B1/fr not_active Expired - Fee Related
-
1998
- 1998-09-03 EP EP98402178A patent/EP0906987A1/fr not_active Withdrawn
- 1998-09-10 ZA ZA988300A patent/ZA988300B/xx unknown
- 1998-09-24 KR KR1019980039686A patent/KR19990036671A/ko not_active Application Discontinuation
- 1998-09-25 CN CN98120727A patent/CN1213722A/zh active Pending
- 1998-09-29 MA MA25275A patent/MA24659A1/fr unknown
- 1998-10-01 JP JP10279873A patent/JPH11152693A/ja active Pending
- 1998-10-01 NO NO984593A patent/NO984593L/no not_active Application Discontinuation
- 1998-10-02 AU AU87877/98A patent/AU8787798A/en not_active Abandoned
- 1998-10-02 CA CA002246569A patent/CA2246569A1/fr not_active Abandoned
- 1998-10-02 BR BR9803865-6A patent/BR9803865A/pt unknown
- 1998-10-02 ID IDP981319A patent/ID21153A/id unknown
Also Published As
Publication number | Publication date |
---|---|
FR2769327B1 (fr) | 1999-11-05 |
EP0906987A1 (fr) | 1999-04-07 |
ZA988300B (en) | 1999-03-11 |
CN1213722A (zh) | 1999-04-14 |
MA24659A1 (fr) | 1999-04-01 |
JPH11152693A (ja) | 1999-06-08 |
FR2769327A1 (fr) | 1999-04-09 |
NO984593L (no) | 1999-04-06 |
ID21153A (id) | 1999-04-29 |
KR19990036671A (ko) | 1999-05-25 |
AU8787798A (en) | 1999-04-22 |
CA2246569A1 (fr) | 1999-04-03 |
NO984593D0 (no) | 1998-10-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B08F | Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette] |