SE0201891L - Removal of water-soluble compounds from wood chips before cooking - Google Patents
Removal of water-soluble compounds from wood chips before cookingInfo
- Publication number
- SE0201891L SE0201891L SE0201891A SE0201891A SE0201891L SE 0201891 L SE0201891 L SE 0201891L SE 0201891 A SE0201891 A SE 0201891A SE 0201891 A SE0201891 A SE 0201891A SE 0201891 L SE0201891 L SE 0201891L
- Authority
- SE
- Sweden
- Prior art keywords
- water
- compounds
- wood chips
- soluble
- soluble compounds
- 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
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/02—Pretreatment of the finely-divided materials before digesting with water or steam
Landscapes
- Paper (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
Processes and systems for the treatment of wood chips prior to cooking remove substantially (e.g., at least about 30%) water-soluble compounds therein, especially those compounds which disassociate in water to form potassium and/or chloride ions and/or water-soluble metal compounds such as manganese, calcium and potassium. In preferred embodiments, wood chips entering the cooking system containing water-soluble compounds, such as those compounds which disassociate in water to form potassium and/or chloride ions and/or water-soluble metal compounds such as manganese, calcium and potassium, may be treated prior to cooking by being brought into contact with an aqueous treatment stream (e.g., water or steam condensate) at a temperature (e.g., between about 20° C. to about 120° C.) and for a time (e.g., between about 2 to 200 minutes) so as to reduce substantially (e.g., at least about 30%) such water-soluble compounds.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US29977001P | 2001-06-22 | 2001-06-22 | |
| US10/159,292 US20030000661A1 (en) | 2001-06-22 | 2002-06-03 | Removal of water-soluble compounds from wood chips prior to cooking |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE0201891D0 SE0201891D0 (en) | 2002-06-20 |
| SE0201891L true SE0201891L (en) | 2002-12-23 |
| SE528163C2 SE528163C2 (en) | 2006-09-19 |
Family
ID=26855812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE0201891A SE528163C2 (en) | 2001-06-22 | 2002-06-20 | Removal of water-soluble compounds from wood chips before cooking |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20030000661A1 (en) |
| JP (1) | JP2003020582A (en) |
| CA (1) | CA2390742C (en) |
| FI (1) | FI20021152A (en) |
| SE (1) | SE528163C2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7309401B2 (en) * | 2003-05-12 | 2007-12-18 | Andritz Inc. | Top separator for gas phase and hydraulic phase continuous digesters and method for converting digester |
| EP1561536A1 (en) * | 2004-02-03 | 2005-08-10 | Siemens Aktiengesellschaft | Process of brazing repairing of a part having a base material with oriented microstructure |
| FI122651B (en) * | 2004-11-19 | 2012-05-15 | Metso Paper Inc | Process and apparatus for treating wood chips |
| WO2014124321A1 (en) * | 2013-02-07 | 2014-08-14 | University Of Maine System Board Of Trustees | Extraction of lignocellulosics for production of fibers and a precipitate-free hemicellulose extract |
| BR112016014206A2 (en) * | 2013-12-18 | 2017-08-08 | Shell Int Research | CONTINUOUS OR SEMI-CONTINUOUS BIOMASS WASHING SYSTEM FOR HYDROTHERMIC HYDROCATALYTIC COVERSION |
| SE542430C2 (en) * | 2017-09-19 | 2020-04-28 | Domsjoe Fabriker Ab | Removal of inorganic elements from wood chips |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI58360C (en) * | 1974-06-14 | 1981-01-12 | Mo Och Domsjoe Ab | FOERFARANDE FOER DELIGNIFIERING AV LIGNOCELLULOSAHALTIGT MATERIAL MED HJAELP AV SYREINNEHAOLLANDE GAS OCH APPARATUR FOER UTFOERANDE AV DETTA FOERFARANDE |
| SE416481B (en) * | 1977-05-02 | 1981-01-05 | Mo Och Domsjoe Ab | METHOD AND DEVICE FOR TREATMENT OF WOOD TIP FOR REMOVAL OF HEAVY METALS AND RESIN |
| US4826567A (en) * | 1985-08-05 | 1989-05-02 | Interox (Societe Anonyme) | Process for the delignification of cellulosic substances by pretreating with a complexing agent followed by hydrogen peroxide |
| FI81396C (en) * | 1988-10-25 | 1990-10-10 | Enso Gutzeit Oy | FOERFARANDE FOER BEHANDLING AV AVFALLSVATTEN FRAON TRAEFOERAEDLINGSINDUSTRINS MASSAFRAMSTAELLNINGSPROCESSER. |
| US6143134A (en) * | 1998-11-06 | 2000-11-07 | Andritz-Ahlstrom Inc. | Chip spreader for air-lock feeder |
-
2002
- 2002-06-03 US US10/159,292 patent/US20030000661A1/en not_active Abandoned
- 2002-06-14 FI FI20021152A patent/FI20021152A/en not_active Application Discontinuation
- 2002-06-14 JP JP2002174678A patent/JP2003020582A/en active Pending
- 2002-06-17 CA CA002390742A patent/CA2390742C/en not_active Expired - Fee Related
- 2002-06-20 SE SE0201891A patent/SE528163C2/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| CA2390742A1 (en) | 2002-12-22 |
| SE0201891D0 (en) | 2002-06-20 |
| FI20021152A (en) | 2002-12-23 |
| JP2003020582A (en) | 2003-01-24 |
| CA2390742C (en) | 2009-11-10 |
| US20030000661A1 (en) | 2003-01-02 |
| SE528163C2 (en) | 2006-09-19 |
| FI20021152A0 (en) | 2002-06-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |