EP1748268A2 - Procédé de séchage de produits - Google Patents

Procédé de séchage de produits Download PDF

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Publication number
EP1748268A2
EP1748268A2 EP06015742A EP06015742A EP1748268A2 EP 1748268 A2 EP1748268 A2 EP 1748268A2 EP 06015742 A EP06015742 A EP 06015742A EP 06015742 A EP06015742 A EP 06015742A EP 1748268 A2 EP1748268 A2 EP 1748268A2
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EP
European Patent Office
Prior art keywords
chamber
drying
wood
dried
upper limit
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP06015742A
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German (de)
English (en)
Other versions
EP1748268A3 (fr
Inventor
Josef Walderdorff
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Publication of EP1748268A2 publication Critical patent/EP1748268A2/fr
Publication of EP1748268A3 publication Critical patent/EP1748268A3/fr
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements for supplying or controlling air or other gases for drying solid materials or objects
    • F26B21/20—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
    • F26B21/25—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
    • F26B21/00—Arrangements for supplying or controlling air or other gases for drying solid materials or objects
    • F26B21/30—Controlling, e.g. regulating, parameters of gas supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
    • F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
    • 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 goods
    • F26B2210/16—Wood, e.g. lumber, timber

Definitions

  • This object of the invention is achieved in each case independently that the drying is carried out by the leadership of a gaseous dry medium, in particular heated air in the cycle formed by the pipe and the chamber, wherein the dry medium for the duration of drying, at least substantially not replaced is and only a maximum amount of water vapor is removed, which is formed during the drying process from the wood, further characterized in that in the heating system as the heat transfer medium, a thermal oil is used, which is a glycol or glycol contains and in that in the pipeline a drying medium is guided, wherein the chamber with the pipeline via at least one first connection, in particular for the supply of the dry medium, at least approximately in the region below the material to be dried and at least one further connection, in particular for the removal of the dry medium from the chamber, at least at approaching in the area above the material to be dried fluidly connected.
  • a thermal oil is used, which is a glycol or glycol contains and in that in the pipeline a drying medium is guided, wherein the chamber with the pipeline via at least one first connection, in particular for the supply
  • the dry medium with at least approximately 90%, in particular at least approximately 80%, preferably at least approximately 70%, saturation with water or water vapor at least for the period after reaching saturation due to the drying until the termination of drying at a predeterminable degree of drying of the material is recycled, which surprisingly reduces the time required for drying, in particular to a time period of the order of one day.
  • the transfer of heat from the heating system to the dry medium can be carried out with a heat exchange device, which is operatively connected to the heating system via a primary heat cycle. It can thus the heat supply or the respective amount of heat required the particular circumstances or each to be dried Good and be adapted to the drying progress, without the power output of the heating system is subject to greater fluctuations, whereby the components of the heating system while still satisfactory energy balance possible be spared.
  • the thermal oil boiler is circulated in the primary heat cycle as the heat transfer medium.
  • the thermal oil boiler are characterized in particular by the fact that they are usually performed in the unpressurized area and therefore not subject to the Austrian Pressure Equipment Supervision Ordinance (DGÜW-V), whereby the operating costs can be reduced accordingly, or the operation of the system can also be performed by personnel who no special training for this purpose - apart from the instructions of the drying device - needs.
  • DGÜW-V Austrian Pressure Equipment Supervision Ordinance
  • drying is carried out in one stage. It eliminates a possible pre-drying step, which would consume additional energy.
  • the drying is carried out at least temporarily at a temperature which is selected from a range with a lower limit of 100 ° C and an upper limit of 170 ° C, in particular from a range with a lower limit of 105 ° C and an upper limit of 150 ° C, preferably from a range with a lower limit of 110 ° C and an upper limit of 128 ° C.
  • a temperature range is the possibility, on the one hand the drying economically from the heating temperatures and on the other hand, economically from the time spent for the drying to perform.
  • the water absorption capacity of the dry medium at these temperatures is greater, which not only the drying time can be shortened, but also positive effects can be achieved to prevent cracking.
  • a variant provides that at least two sensors are arranged in the chamber for detecting the temperature in the chamber, in particular in an upper and lower region of the chamber. At least one, in particular two, sensors for detecting the moisture in the chamber and / or in the wood can also be arranged. Furthermore, at least one measuring sensor for detecting the pressure, in particular a back pressure, can be arranged in the chamber in the chamber. Likewise, at least one sensor for detecting the temperature and / or humidity could be arranged in each corner of the chamber and in the center of the chamber. Finally, these sensors can be conductively connected to the control and / or control device, for example to perform a control or regulation of the drying process on the internal pressure. For example, more moisture can be removed from the system when the pressure is increased.
  • the walls of the chamber 3 may be filled with insulation 6 ( Figure 2) to ensure a more efficient thermal management in the device 1 during drying.
  • the material to be dried can in particular be a wood 7, can be introduced into the chamber 3 in a loose, ordered, poured or other suitable form, it being important to ensure that between the components of the wood 7, for example, the logs or the boards , Space for free air circulation is present. If it is Scheiter, then the spaces between the individual pieces of wood are sufficient for a good ventilation and it is not necessary to use separate spacers. For a good invention Drying action must be taken to ensure that there are as far as possible no through channels in the dry material, which could cause an irregular drying result. With a uniform flow, a higher dynamic pressure is exerted on the dry material, which can positively influence the drying.
  • a discharge channel 8 which is connected to a connection 9 with the interior of the chamber 3.
  • This discharge channel 8 is used for the withdrawal of saturated, in particular heated, air or other gaseous dry medium 10.
  • the dry medium 10 rises through the discharge channel 8 to a circulating device 11 as a result of the effect of the same, then flows through a pipe 12, in this Embodiment also forms the discharge channel 8, further to a heat exchanger 13, where the dry medium 10 heat is lost to the dry medium 10 due to drying or other causes, is returned to keep the drying medium 10 to operating temperature.
  • a cleaning of the dry medium 10, in particular of wood and wood 7 condensates or wood components, can take place here or immediately after the heat exchanger 13, to which optionally separate, not shown, cleaning devices, e.g. Gas scrubber, fluidly connected to the pipe 12 may be arranged in the device 1.
  • cleaning devices e.g. Gas scrubber
  • the heating system 14 is preferably designed with a thermal oil boiler, it being possible to use a glycol, in particular a propylene glycol, as the thermo-oil.
  • energy sources for the heating system 14 conventional fuels such as e.g. Oil, fuel oil, vegetable oil methyl ester, gas, natural gas, wood, wood products, pellets, wood chips, wood by-products, bark, straw in question, as well as renewable energy sources such as solar or wind energy, photovoltaic, geothermal or in the drying of wood 7 resulting side or waste products such as gases and / or condensates, in particular water vapor, hydrogen, phenols, alcohols, acetic acid, formic acid, carbon monoxide, are used to provide at least part of the required energy.
  • the at least one opening 21 may have (in Fig. 1, 5 openings 21 are shown) are directed to the wood 7.
  • the baffle 20 may be made of a metallic material, which is particularly viable, mechanically durable and corrosion resistant to heat, moisture and the partially aggressive wood ingredients designed to order the material to be dried directly on it.
  • the baffle 20 may be designed in particular as a perforated plate, but also as a grid-like element, or other suitable device.
  • deflecting plate 20 A similar design of the deflecting plate 20 is also conceivable, wherein supporting elements can be arranged directly on the deflecting plate 20 and, as described above, can have openings for passage of the dry medium 10.
  • discharge channel 8 may be formed as a collecting channel for the dry medium 10, for example, again by arranging a perforated plate , It is also possible in this area instead of the perforated plate or in addition, as is also possible below the material to be dried, deflection devices, e.g. to arrange at least one baffle 20.
  • the baffles 20 may have at least one opening 21.
  • the temperature and / or the humidity and / or the pressure in the chamber 3 are monitored or measured with these sensors 22, and the measurement result can be based on a control and / or control process, eg the temperature and / or the pressure, be.
  • sensors 22 may be line connected to a data processing system 24 via a line 23. Optimizing the drying process is therefore also possible during a running drying process, it is also possible to carry out longer measurement records or to run test series for drying.
  • the values measured by the probe (s) 22 may also be used to open or close the chamber 3.
  • the closure device 5 are automatically opened after reaching a predetermined target final moisture content of the wood 7, for example 20%, and the end of a drying process is initiated.
  • This procedure can be carried out up to a temperature of 100 ° C to 110 ° C, and then (over 100 ° C to 110 ° C) the water vapor content of the dry medium 10 is lowered to adjust the above residual oxygen content, for example by condensation and removal of part of the Steam from the system.
  • the thus set dry medium 10 can absorb water from the wood better.
  • the circulation rate of the dry medium 10 is determined by the circulation device 11.
  • An increase in the flow rate of the dry medium 10 may cause an acceleration of the drying process per se, but it may also be that in the case of a fault, breakdown or an unexpectedly high accumulation of gases or wood by-products, a slowing of the flow velocity to be achieved.
  • the heat exchanger 13 can thus also work predominantly in the optimum range and is exposed to only a few working peaks, which would increase the wear and reduce the service life.
  • connections for an external heat and energy supply on site in the form of a so-called "docking station” can be arranged for this purpose.
  • a process that is as economical as possible for obtaining dry firewood could proceed so that the wood 7 is filled into the chamber 3 directly at the point of seizure, for example in the case of a log splitter, processor, PTO splitter, a separating device or the like.
  • the chamber 3 can be expediently designed as a roll-off, Absetz-, WAP or other container, the size of the transport options (truck-mobile or tractor-driven) is influenced.
  • the chamber 3 can be brought to the drying place, where after drying the removal of the dry material, e.g. by dumping or further emptying operations, can be made. Any intermediate storage of the dried wood 7 or the packaging into marketable units completes the process.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
EP06015742A 2005-07-29 2006-07-28 Procédé de séchage de produits Withdrawn EP1748268A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT12772005 2005-07-29

Publications (2)

Publication Number Publication Date
EP1748268A2 true EP1748268A2 (fr) 2007-01-31
EP1748268A3 EP1748268A3 (fr) 2011-11-02

Family

ID=37192307

Family Applications (1)

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EP06015742A Withdrawn EP1748268A3 (fr) 2005-07-29 2006-07-28 Procédé de séchage de produits

Country Status (1)

Country Link
EP (1) EP1748268A3 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009031032A3 (fr) * 2007-09-07 2009-05-14 Johannes Gross Installation et procédé de récupération d'énergie au moyen d'une machine motrice à vapeur
CN104406370A (zh) * 2014-11-20 2015-03-11 四川省烟草公司攀枝花市公司（攀枝花市烟草公司） 节能热风烘干装置
CN108489255A (zh) * 2016-08-12 2018-09-04 福建省南安市海特机械有限公司 一种回收热能的生物质烘干设备
CN110091402A (zh) * 2019-05-09 2019-08-06 南京林业大学 一种竹片养生处理工艺
WO2020047892A1 (fr) * 2018-09-07 2020-03-12 淄博齐鼎立专利信息咨询有限公司 Dispositif de séchage
CN111174550A (zh) * 2020-01-14 2020-05-19 深圳市群卜鸿科技有限公司 一种烘干效果好的木材干燥设备
CN113894023A (zh) * 2021-10-15 2022-01-07 山东润马光能科技有限公司 一种太阳电池组件用密封胶加速固化装置
CN114061278A (zh) * 2021-11-23 2022-02-18 湖南喜传天下家居有限公司 一种沙发加工用木材干燥装置
CN114963711A (zh) * 2022-05-27 2022-08-30 扬州市江都区三和涂装设备有限公司 一种涂装烘干炉用天然气加热设备

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1071276B (it) * 1976-05-12 1985-04-02 Pagnozzi Ernesto Guglielmo Perfezionamenti nei procedimenti e negli impianti di essiccazione del legname..particolarmente negli impianti che impiegano il vuoto
DD239463A1 (de) * 1983-05-31 1986-09-24 Eckhold Karl Heinz Waermepumpenanordnung fuer trockner von natuerlichen guetern
FR2573186A1 (fr) * 1984-11-12 1986-05-16 Guerra Marc Perfectionnement aux installations pour le sechage et le conditionnement des materiaux, notamment du bois, faisant intervenir alternativement une circulation d'air humide chaud puis une mise sous vide a froid
FI101423B (fi) * 1997-02-21 1998-06-15 Keijo Johannes Saarenpaeae Menetelmä ja laite vettä sisältävän kohteen kuivaamiseksi
DE29711315U1 (de) * 1997-06-28 1997-08-28 Gerl, Bernhard, 84166 Adlkofen Vorrichtung zum Trocknen
AT412741B (de) * 2001-12-10 2005-06-27 Muehlboeck Kurt Verfahren zum trocknen von gestapeltem holz
FR2846269B1 (fr) * 2002-10-28 2004-12-24 Jean Laurencot Procede pour traiter une charge de matiere ligneuse composee d'elements empiles, notamment une charge de bois, par traitement thermique a haute temperature

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009031032A3 (fr) * 2007-09-07 2009-05-14 Johannes Gross Installation et procédé de récupération d'énergie au moyen d'une machine motrice à vapeur
CN104406370A (zh) * 2014-11-20 2015-03-11 四川省烟草公司攀枝花市公司（攀枝花市烟草公司） 节能热风烘干装置
CN104406370B (zh) * 2014-11-20 2016-09-14 四川省烟草公司攀枝花市公司（攀枝花市烟草公司） 节能热风烘干装置
CN108489255A (zh) * 2016-08-12 2018-09-04 福建省南安市海特机械有限公司 一种回收热能的生物质烘干设备
CN108489255B (zh) * 2016-08-12 2020-04-14 福建省南安市海特机械有限公司 一种回收热能的生物质烘干设备
WO2020047892A1 (fr) * 2018-09-07 2020-03-12 淄博齐鼎立专利信息咨询有限公司 Dispositif de séchage
CN110091402A (zh) * 2019-05-09 2019-08-06 南京林业大学 一种竹片养生处理工艺
CN111174550A (zh) * 2020-01-14 2020-05-19 深圳市群卜鸿科技有限公司 一种烘干效果好的木材干燥设备
CN113894023A (zh) * 2021-10-15 2022-01-07 山东润马光能科技有限公司 一种太阳电池组件用密封胶加速固化装置
CN114061278A (zh) * 2021-11-23 2022-02-18 湖南喜传天下家居有限公司 一种沙发加工用木材干燥装置
CN114963711A (zh) * 2022-05-27 2022-08-30 扬州市江都区三和涂装设备有限公司 一种涂装烘干炉用天然气加热设备
CN114963711B (zh) * 2022-05-27 2024-02-06 陕西东海明珠防腐工程有限责任公司 一种涂装烘干炉用天然气加热设备

Also Published As

Publication number Publication date
EP1748268A3 (fr) 2011-11-02

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