BRPI0506684A - método para deslignificação pór oxigênio de polpa de celulose em diversas etapas sob alta pressão - Google Patents
método para deslignificação pór oxigênio de polpa de celulose em diversas etapas sob alta pressãoInfo
- Publication number
- BRPI0506684A BRPI0506684A BRPI0506684-0A BRPI0506684A BRPI0506684A BR PI0506684 A BRPI0506684 A BR PI0506684A BR PI0506684 A BRPI0506684 A BR PI0506684A BR PI0506684 A BRPI0506684 A BR PI0506684A
- Authority
- BR
- Brazil
- Prior art keywords
- high pressure
- oxygen
- dissolved
- delignification
- maintained
- Prior art date
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title abstract 7
- 229910052760 oxygen Inorganic materials 0.000 title abstract 7
- 239000001301 oxygen Substances 0.000 title abstract 7
- 238000000034 method Methods 0.000 title abstract 5
- 229920002678 cellulose Polymers 0.000 abstract 3
- 239000001913 cellulose Substances 0.000 abstract 3
- 239000012530 fluid Substances 0.000 abstract 3
- 230000014759 maintenance of location Effects 0.000 abstract 2
- 229920003043 Cellulose fiber Polymers 0.000 abstract 1
- 238000013019 agitation Methods 0.000 abstract 1
- 230000003252 repetitive effect Effects 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
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0403222A SE0403222L (sv) | 2004-12-30 | 2004-12-30 | Metod för syrgasdelignifiering av cellulosamassa vid högt tryck i flera steg |
| PCT/SE2005/001366 WO2006071165A1 (en) | 2004-12-30 | 2005-09-20 | A method for oxygen delignification of cellulose pulp at high pressure in several steps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BRPI0506684A true BRPI0506684A (pt) | 2007-05-02 |
Family
ID=34102164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BRPI0506684-0A BRPI0506684A (pt) | 2004-12-30 | 2005-09-20 | método para deslignificação pór oxigênio de polpa de celulose em diversas etapas sob alta pressão |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20090107642A1 (sv) |
| EP (1) | EP1831455A1 (sv) |
| JP (1) | JP2008527184A (sv) |
| BR (1) | BRPI0506684A (sv) |
| CA (1) | CA2553539A1 (sv) |
| SE (1) | SE0403222L (sv) |
| WO (1) | WO2006071165A1 (sv) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI123023B (sv) | 2009-09-01 | 2012-10-15 | Andritz Oy | Förfarande och anordning för avskiljning av såpa |
| FI126847B (sv) * | 2012-12-13 | 2017-06-15 | Upm Kymmene Corp | Förfarande för katalytisk oxidation av cellulosa och förfarande för tillverkning av en cellulosaprodukt |
| SE540043C2 (sv) * | 2015-11-27 | 2018-03-06 | Valmet Oy | Method and system for oxygen delignification of cellulose pulp |
| DE102020002445A1 (de) | 2020-04-23 | 2021-10-28 | Messer Austria Gmbh | Verfahren und Vorrichtung zur Herstellung von gebleichtem Zellstoff |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5217575A (en) * | 1988-10-18 | 1993-06-08 | Kamyr Ab | Process for oxygen bleaching using two vertical reactors |
| US5460696A (en) * | 1993-08-12 | 1995-10-24 | The Boc Group, Inc. | Oxygen delignification method incorporating wood pulp mixing apparatus |
| SE9401628L (sv) * | 1994-05-10 | 1995-11-11 | Stora Kopparbergs Bergslags Ab | Förfarande vid syrgasdelignifiering |
| SE505141C2 (sv) * | 1995-10-23 | 1997-06-30 | Sunds Defibrator Ind Ab | Syrgasdelignifiering av massa i två steg med hög satsning av alkali och syrgas och temperatur under 90 C i första steget |
| EP0865531B1 (en) * | 1995-12-07 | 2002-03-06 | Beloit Technologies, Inc. | Oxygen delignification of medium consistency pulp slurry |
-
2004
- 2004-12-30 SE SE0403222A patent/SE0403222L/sv not_active IP Right Cessation
-
2005
- 2005-09-20 US US10/595,860 patent/US20090107642A1/en not_active Abandoned
- 2005-09-20 JP JP2007549312A patent/JP2008527184A/ja active Pending
- 2005-09-20 CA CA002553539A patent/CA2553539A1/en not_active Abandoned
- 2005-09-20 EP EP05784562A patent/EP1831455A1/en not_active Withdrawn
- 2005-09-20 BR BRPI0506684-0A patent/BRPI0506684A/pt not_active Application Discontinuation
- 2005-09-20 WO PCT/SE2005/001366 patent/WO2006071165A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| EP1831455A1 (en) | 2007-09-12 |
| SE526843C2 (sv) | 2005-11-08 |
| WO2006071165A1 (en) | 2006-07-06 |
| CA2553539A1 (en) | 2006-07-06 |
| SE0403222L (sv) | 2005-11-08 |
| US20090107642A1 (en) | 2009-04-30 |
| SE0403222D0 (sv) | 2004-12-30 |
| JP2008527184A (ja) | 2008-07-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B11A | Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing | ||
| B11Y | Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette] |