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 dryer

Info

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
Application number
SE0701024A
Other languages
Swedish (sv)
Inventor
Robert Larsson
Original Assignee
Valutec Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valutec Ab filed Critical Valutec Ab
Priority to SE0701024A priority Critical patent/SE0701024L/en
Priority to EP08741920.6A priority patent/EP2160559B1/en
Priority to PCT/SE2008/050430 priority patent/WO2008133583A1/en
Publication of SE0701024L publication Critical patent/SE0701024L/en

Links

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.
SE0701024A 2007-04-26 2007-04-26 Procedure for dynamic control of the drying time in a duct dryer SE0701024L (en)

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)

* Cited by examiner, † Cited by third party
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
EP3667218B1 (en) * 2018-12-12 2021-06-09 Valutec AB Timber drying process

Family Cites Families (5)

* Cited by examiner, † Cited by third party
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
WO2002025192A1 (en) 2000-09-25 2002-03-28 Windsor Engineering Group Limited Timber drying kiln
SE0401545L (en) * 2004-06-16 2005-12-17 Wsab Oy Ab Walking dryer

Also Published As

Publication number Publication date
EP2160559B1 (en) 2017-06-28
EP2160559A1 (en) 2010-03-10
EP2160559A4 (en) 2016-01-13
WO2008133583A1 (en) 2008-11-06

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Legal Events

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