SE0701024L - Procedure for dynamic control of the drying time in a duct dryer - Google Patents
Procedure for dynamic control of the drying time in a duct dryerInfo
- Publication number
- SE0701024L SE0701024L SE0701024A SE0701024A SE0701024L SE 0701024 L SE0701024 L SE 0701024L SE 0701024 A SE0701024 A SE 0701024A SE 0701024 A SE0701024 A SE 0701024A SE 0701024 L SE0701024 L SE 0701024L
- Authority
- SE
- Sweden
- Prior art keywords
- wood
- moisture ratio
- batch
- pathway
- drying
- Prior art date
Links
- 238000001035 drying Methods 0.000 title abstract 6
- 238000000034 method Methods 0.000 title abstract 3
- 239000002023 wood Substances 0.000 abstract 8
- 230000037361 pathway Effects 0.000 abstract 6
- 238000005259 measurement Methods 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
- F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
- F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
- F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
- F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
- F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
- F26B15/16—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by wheeled trucks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
- F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
- F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
- F26B15/18—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by endless belts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
- F26B21/04—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2210/00—Drying processes and machines for solid objects characterised by the specific requirements of the drying good
- F26B2210/16—Wood, e.g. lumber, timber
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention concerns a method for the dynamic control of the drying period in a drying tunnel that works with an outwardly enclosed drying pathway (1) through which wood in the form of batches (4:2-4:n) is fed forwards at regular intervals, known as the "throughput time", such that a batch of wood (4:0) with its load of moist wood are fed into the pathway at the same time as a batch of dried wood (4:n) and with a moisture ratio (Tn) that has been achieved and that is located at the innermost extent of the drying pathway is fed out from the pathway. The method is characterised in: that the final moisture ratio (?n) for a batch of wood (4:n) located at the innermost extent of the pathway (1) is determined by measuring the moisture ratio of the batch of wood, that the measurement of moisture ratio is carried out directly in the drying pathway, that the final moisture ratio (?n) is compared with the target moisture ratio (Tn) for the batch of dried wood, that withdrawal is carried out if the final moisture ratio (?n) is less than or equal to the desired target moisture ratio (Tn) for the batch of wood.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0701024A SE0701024L (en) | 2007-04-26 | 2007-04-26 | Procedure for dynamic control of the drying time in a duct dryer |
EP08741920.6A EP2160559B1 (en) | 2007-04-26 | 2008-04-16 | Method for dynamic control of the drying period in a drying tunnel |
PCT/SE2008/050430 WO2008133583A1 (en) | 2007-04-26 | 2008-04-16 | Method for dynamic control of the drying period in a drying tunnel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0701024A SE0701024L (en) | 2007-04-26 | 2007-04-26 | Procedure for dynamic control of the drying time in a duct dryer |
Publications (1)
Publication Number | Publication Date |
---|---|
SE0701024L true SE0701024L (en) | 2008-10-27 |
Family
ID=39925922
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE0701024A SE0701024L (en) | 2007-04-26 | 2007-04-26 | Procedure for dynamic control of the drying time in a duct dryer |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2160559B1 (en) |
SE (1) | SE0701024L (en) |
WO (1) | WO2008133583A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102012157A (en) * | 2010-12-02 | 2011-04-13 | 蓬莱京鲁渔业有限公司 | Energy-efficient drying system |
CN102538421B (en) * | 2012-02-29 | 2014-05-14 | 兰州奇正粉体装备技术有限公司 | Method and device for drying by heating and dehydrating |
CN102997631A (en) * | 2012-10-31 | 2013-03-27 | 宜兴市宜刚环保工程材料有限公司 | Continuous drying kiln of honeycomb-type denitration catalyst |
CN104634080A (en) * | 2015-02-10 | 2015-05-20 | 重庆三爱海陵实业有限责任公司 | Valve drying device |
SE1751496A1 (en) * | 2017-12-05 | 2019-06-06 | Valutec Ab | Workable wood dryer and conveyor intended for such wood dryer |
PL3667218T3 (en) * | 2018-12-12 | 2022-01-03 | Valutec Ab | Timber drying process |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3422545A (en) * | 1966-07-08 | 1969-01-21 | Nukor Proprietary Ltd | Timber drying process and apparatus |
US4663860A (en) | 1984-02-21 | 1987-05-12 | Weyerhaeuser Company | Vertical progressive lumber dryer |
US5197201A (en) * | 1988-09-27 | 1993-03-30 | Ekono Oy | Process for drying timber |
AU9038701A (en) | 2000-09-25 | 2002-04-02 | Windsor Engineering Group Ltd | Timber drying kiln |
SE0401545L (en) * | 2004-06-16 | 2005-12-17 | Wsab Oy Ab | Walking dryer |
-
2007
- 2007-04-26 SE SE0701024A patent/SE0701024L/en not_active Application Discontinuation
-
2008
- 2008-04-16 WO PCT/SE2008/050430 patent/WO2008133583A1/en active Application Filing
- 2008-04-16 EP EP08741920.6A patent/EP2160559B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
WO2008133583A1 (en) | 2008-11-06 |
EP2160559A4 (en) | 2016-01-13 |
EP2160559B1 (en) | 2017-06-28 |
EP2160559A1 (en) | 2010-03-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |