SE0201679L - Process and cookery system for preparing cellulose pulp - Google Patents
Process and cookery system for preparing cellulose pulpInfo
- Publication number
- SE0201679L SE0201679L SE0201679A SE0201679A SE0201679L SE 0201679 L SE0201679 L SE 0201679L SE 0201679 A SE0201679 A SE 0201679A SE 0201679 A SE0201679 A SE 0201679A SE 0201679 L SE0201679 L SE 0201679L
- Authority
- SE
- Sweden
- Prior art keywords
- cellulose pulp
- cookery
- raw material
- preparing cellulose
- softwood
- Prior art date
Links
- 229920002678 cellulose Polymers 0.000 title abstract 2
- 239000001913 cellulose Substances 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- 239000002023 wood Substances 0.000 abstract 3
- 238000010411 cooking Methods 0.000 abstract 2
- 239000002994 raw material Substances 0.000 abstract 2
- 239000011122 softwood Substances 0.000 abstract 2
- 239000003513 alkali Substances 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 239000011121 hardwood Substances 0.000 abstract 1
- 239000000463 material Substances 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
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
-
- 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/228—Automation of the pulping processes
-
- 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
-
- 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
Landscapes
- Paper (AREA)
Abstract
The invention concerns a method for the production of cellulose pulp. A wood raw material that principally comprises softwood, preferably in the form of cut wood chips, is treated in several stages in various treatment steps. One of the stages is cooking the material in an alkali cooking fluid, with the aim of obtaining improved quality with respect to tensile strength, and of obtaining higher yield. A controlled addition of wood raw material in the form of hardwood at an amount corresponding to 1-20% of the amount of softwood, preferably 3-15%, and more preferably at least 5%, takes place.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0201679A SE522415C2 (en) | 2002-06-03 | 2002-06-03 | Process and cookery system for preparing cellulose pulp |
US10/514,409 US20050252625A1 (en) | 2002-06-03 | 2003-05-02 | Process for the manufacturing of cellulose pulp |
AU2003235376A AU2003235376A1 (en) | 2002-06-03 | 2003-05-02 | Process for the manufacturing of cellulose pulp |
EP03721262A EP1513981A1 (en) | 2002-06-03 | 2003-05-02 | Process for the manufacturing of cellulose pulp |
PCT/SE2003/000712 WO2003102296A1 (en) | 2002-06-03 | 2003-05-02 | Process for the manufacturing of cellulose pulp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0201679A SE522415C2 (en) | 2002-06-03 | 2002-06-03 | Process and cookery system for preparing cellulose pulp |
Publications (3)
Publication Number | Publication Date |
---|---|
SE0201679D0 SE0201679D0 (en) | 2002-06-03 |
SE0201679L true SE0201679L (en) | 2003-12-04 |
SE522415C2 SE522415C2 (en) | 2004-02-10 |
Family
ID=20288056
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE0201679A SE522415C2 (en) | 2002-06-03 | 2002-06-03 | Process and cookery system for preparing cellulose pulp |
Country Status (5)
Country | Link |
---|---|
US (1) | US20050252625A1 (en) |
EP (1) | EP1513981A1 (en) |
AU (1) | AU2003235376A1 (en) |
SE (1) | SE522415C2 (en) |
WO (1) | WO2003102296A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE518993E (en) * | 2002-01-24 | 2009-08-28 | Metso Paper Sweden Ab | Preparation of cellulose pulp by boiling with a boiling liquid containing evaporated black liquor |
NZ591346A (en) * | 2011-02-28 | 2011-10-28 | Wpi Internat Ltd | Improved method of producing pulp from pinus radiata |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4152197A (en) * | 1974-09-23 | 1979-05-01 | Mo Och Domsjo Ab | Process for preparing high-yield cellulose pulps by vapor phase pulping an unpulped portion of lignocellulosic material and a partially chemically pulped portion |
JPS5358003A (en) * | 1976-11-02 | 1978-05-25 | Oji Paper Co | Process for making alkali pulp from needleeleaf trees |
-
2002
- 2002-06-03 SE SE0201679A patent/SE522415C2/en not_active IP Right Cessation
-
2003
- 2003-05-02 AU AU2003235376A patent/AU2003235376A1/en not_active Abandoned
- 2003-05-02 WO PCT/SE2003/000712 patent/WO2003102296A1/en not_active Application Discontinuation
- 2003-05-02 EP EP03721262A patent/EP1513981A1/en not_active Withdrawn
- 2003-05-02 US US10/514,409 patent/US20050252625A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
SE522415C2 (en) | 2004-02-10 |
US20050252625A1 (en) | 2005-11-17 |
AU2003235376A1 (en) | 2003-12-19 |
SE0201679D0 (en) | 2002-06-03 |
EP1513981A1 (en) | 2005-03-16 |
WO2003102296A1 (en) | 2003-12-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |