BR9307520A - Processo para o alvejamento de polpa contendo lignocelulose - Google Patents
Processo para o alvejamento de polpa contendo lignoceluloseInfo
- Publication number
- BR9307520A BR9307520A BR9307520-0A BR9307520A BR9307520A BR 9307520 A BR9307520 A BR 9307520A BR 9307520 A BR9307520 A BR 9307520A BR 9307520 A BR9307520 A BR 9307520A
- Authority
- BR
- Brazil
- Prior art keywords
- pulp
- bleaching
- stages
- containing lignocellulose
- pulp containing
- Prior art date
Links
- 238000004061 bleaching Methods 0.000 title abstract 5
- 238000000034 method Methods 0.000 title abstract 3
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 abstract 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 abstract 1
- 239000007844 bleaching agent Substances 0.000 abstract 1
- 239000008139 complexing agent Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- GRWZHXKQBITJKP-UHFFFAOYSA-L dithionite(2-) Chemical compound [O-]S(=O)S([O-])=O GRWZHXKQBITJKP-UHFFFAOYSA-L 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 229910021645 metal ion Inorganic materials 0.000 abstract 1
- 150000004967 organic peroxy acids Chemical class 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 238000010979 pH adjustment Methods 0.000 abstract 1
- 150000002978 peroxides Chemical class 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- 239000011734 sodium Substances 0.000 abstract 1
- 230000008685 targeting Effects 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
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
Patente de Invenção: PROCESSO PARA O ALVEJAMENTO DE POLPA CONTENDO LIGNOCELULOSE. A presente invenção se refere a um processo para o alvejamento de polpa contendo lignocelulose, onde a polpa é primeiro tratada com um agente de complexação, então deslignificada com perácido orgânico ou um sal do mesmo e subsequentemente alvejada com um composto contendo peróxido, ozónio ou ditionito de sódio. Antes do alvejamento, a polpa é lavada em um pH de pelo menos cerca de 4. Adequadamente a deslignificação é realizada com um ácido peracético fortemente oxidante, de modo que um aumento considerável no brilho bem como uma redução considerável do número kappa são obtidos depois do alvejamento. O efeito de aumento do brilho é muito seletivo, isto é, a viscosidade da polpa é mantida em extensão relativamente grande. Por uma escolha adequada do pH em todos os estágios antes do alvejamento isento de cloro, os ions de metal vantajosos são retidos na polpa enquanto ao mesmo tempo o ajustamento do pH entre os estágios é minimizado e os licores de alvejamento servidos vantajosamente usados internamente, por exemplo, para a lavagem da polpa.
Applications Claiming Priority (3)
| 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 |
| PCT/SE1993/001018 WO1994012722A1 (en) | 1992-11-27 | 1993-11-25 | Process for bleaching of lignocellulose-containing pulp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR9307520A true BR9307520A (pt) | 1999-08-31 |
Family
ID=26661599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR9307520-0A BR9307520A (pt) | 1992-11-27 | 1993-11-25 | Processo para o alvejamento de polpa contendo lignocelulose |
Country Status (16)
| Country | Link |
|---|---|
| EP (1) | EP0670929B2 (pt) |
| JP (1) | JPH08503749A (pt) |
| AT (1) | ATE141972T1 (pt) |
| AU (1) | AU671337B2 (pt) |
| BR (1) | BR9307520A (pt) |
| CA (1) | CA2149649C (pt) |
| CZ (1) | CZ285246B6 (pt) |
| DE (1) | DE69304342T3 (pt) |
| ES (1) | ES2091121T3 (pt) |
| FI (1) | FI118572B (pt) |
| MX (1) | MX9307413A (pt) |
| NO (1) | NO306737B1 (pt) |
| NZ (1) | NZ258273A (pt) |
| PL (1) | PL309190A1 (pt) |
| RU (1) | RU2097463C1 (pt) |
| WO (1) | WO1994012722A1 (pt) |
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 |
| DE402335T1 (de) * | 1989-06-06 | 1992-04-09 | Eka Nobel Ab, Surte | 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 |
| ES2120984T3 (es) * | 1991-10-04 | 1998-11-16 | Solvay Interox Inc | Un procedimiento para mejorar la selectividad de la deslignificacion de una pasta papelera quimica. |
| 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 EP EP94901142A patent/EP0670929B2/en not_active Expired - Lifetime
- 1993-11-25 CZ CZ951328A patent/CZ285246B6/cs not_active IP Right Cessation
- 1993-11-25 NZ NZ258273A patent/NZ258273A/en unknown
- 1993-11-25 MX MX9307413A patent/MX9307413A/es not_active IP Right Cessation
- 1993-11-25 BR BR9307520-0A patent/BR9307520A/pt not_active IP Right Cessation
- 1993-11-25 AT AT94901142T patent/ATE141972T1/de not_active IP Right Cessation
- 1993-11-25 WO PCT/SE1993/001018 patent/WO1994012722A1/en not_active Ceased
- 1993-11-25 RU RU9595113460A patent/RU2097463C1/ru active
- 1993-11-25 AU AU55831/94A patent/AU671337B2/en not_active Ceased
- 1993-11-25 JP JP6513051A patent/JPH08503749A/ja active Pending
- 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
-
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 |
|---|---|
| AU671337B2 (en) | 1996-08-22 |
| WO1994012722A1 (en) | 1994-06-09 |
| CZ285246B6 (cs) | 1999-06-16 |
| ES2091121T3 (es) | 1996-10-16 |
| CZ132895A3 (en) | 1996-01-17 |
| ATE141972T1 (de) | 1996-09-15 |
| AU5583194A (en) | 1994-06-22 |
| FI952551A0 (fi) | 1995-05-24 |
| NO306737B1 (no) | 1999-12-13 |
| DE69304342D1 (de) | 1996-10-02 |
| EP0670929B1 (en) | 1996-08-28 |
| EP0670929A1 (en) | 1995-09-13 |
| EP0670929B2 (en) | 2003-10-22 |
| RU95113460A (ru) | 1996-12-27 |
| DE69304342T3 (de) | 2004-07-01 |
| MX9307413A (es) | 1994-07-29 |
| JPH08503749A (ja) | 1996-04-23 |
| FI952551A7 (fi) | 1995-05-24 |
| NO952074D0 (no) | 1995-05-26 |
| FI118572B (fi) | 2007-12-31 |
| PL309190A1 (en) | 1995-09-18 |
| CA2149649C (en) | 2000-09-19 |
| RU2097463C1 (ru) | 1997-11-27 |
| DE69304342T2 (de) | 1997-03-06 |
| NZ258273A (en) | 1996-08-27 |
| NO952074L (no) | 1995-07-26 |
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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 | ||
| B24C | Patent annual fee: request for for restoration |
Free format text: REFERENTE A 10A,11A,12A, 13A,14A ,15A ,16A E 17A ANUIDADES |
|
| B24H | Lapse because of non-payment of annual fees (definitively: art 78 iv lpi) | ||
| B24F | Patent annual fee: publication cancelled |
Free format text: ANULADA A PUBLICACAO CODIGO 24.8 NA RPI NO 2277 DE 26/08/2014 POR TER SIDO INDEVIDA. |
|
| B21F | Lapse acc. art. 78, item iv - on non-payment of the annual fees in time |
Free format text: REFERENTE AS 10A, 11A, 12A, 13A, 14A, 15A, 16A E 17A ANUIDADES. |
|
| B24J | Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12) |
Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2607 DE 22-12-2020 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013. |