EP1133666B1 - Vorrichtung zur hochtemperaturwärmebehandlung von holzartigem material - Google Patents

Vorrichtung zur hochtemperaturwärmebehandlung von holzartigem material Download PDF

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Publication number
EP1133666B1
EP1133666B1 EP00907740A EP00907740A EP1133666B1 EP 1133666 B1 EP1133666 B1 EP 1133666B1 EP 00907740 A EP00907740 A EP 00907740A EP 00907740 A EP00907740 A EP 00907740A EP 1133666 B1 EP1133666 B1 EP 1133666B1
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EP
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Prior art keywords
chamber
treatment
heat
charge
treated
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Expired - Lifetime
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EP00907740A
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English (en)
French (fr)
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EP1133666A1 (de
Inventor
Jean Laurencot
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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 or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/02—Heating arrangements using combustion heating

Definitions

  • Wood is a widely used material because it has multiple advantages both aesthetically and in terms of its mechanical properties, acoustic and insulating.
  • This treatment can be done by impregnation with chemicals that are toxic products harmful to the environment, or thermally by the process of make a chemical bridging between the macromolecular chains of constituents of wood thermally in a controlled atmosphere and at a minimum temperature of 230 ° C.
  • the second solution is clearly preferable because chemical treatments can have consequences harmful to the environment and health.
  • the homogeneity and the reproducibility of treatment are of course essential.
  • High temperature heat treatment of wood requires the use of devices that allow the wood to be heated at high temperatures without this one ignites. This can only be done by reducing the content of oxygen of the volume of air contained in the treatment chamber.
  • Such devices are described in the French patents published under Nos. 2591 611 and 2,609,927 which provide ovens with one or more burners which, by heating the volume of air contained in the enclosure of heating, reduce the oxygen content of this volume of air.
  • the present invention aims to remedy these disadvantages encountered in the operation of the devices currently proposed by offering a device using the combustion of at least one burner to heat the the air volume of the treatment chamber and reduce the oxygen content, and with improved means of packaging and management of the treatment chamber and the load of ligneous material to be treated.
  • the device according to the invention as defined in the preamble and characterized in that it comprises means for regulating the temperature and humidity of the treatment chamber arranged for humidify said chamber during its rise in temperature, stabilize its temperature during treatment of the woody material load by continuous circulation of the coolant and cool it down in successive steps after the treatment.
  • the device comprises means concentration of the coolant.
  • it also comprises means for adjusting the pressure prevailing in the enclosure, said means being arranged to maintain an overpressure in said enclosure.
  • the means for conditioning the material charge to be treated comprise, between the stacked elements, spacers whose dimensions are defined according to the dimensions of the ligneous material to be treated.
  • the device processing chamber has in its upper part, an arranged heating chamber to heat the coolant after each pass through the load of ligneous material to be treated and communicating, through a closed opening in the bottom of said chamber, with the lower part of the enclosure forming a treatment area.
  • the device advantageously comprises means for modifying the height of the treatment area according to the variation of the height of the load of ligneous material to be treated.
  • the means for concentrating the heat transfer fluid are arranged to cooperate with the heating means of said fluid to obtain a better homogenization of the temperature and a neutral atmosphere by destruction of the oxygen in the enclosure, and are arranged in the chamber of heating the coolant.
  • the means for heating the heat transfer fluid comprise at least one gas burner and the coolant defining an atmosphere neutral is formed by a mixture of air freed of its oxygen and gases burner combustion.
  • the enclosure comprises means arranged to seal around the load of woody material to be treated.
  • the device may comprise electronic means of programmable management of variations of temperature in the enclosure.
  • the temperature regulation means comprise at least one ramp water spray arranged at the outlet of the heating chamber of the coolant.
  • the means for concentrating the coolant can comprise at least minus a concentration cone associated with at least one deflector of distribution arranged to homogenize the concentrated flow of hot gas, the axis said cone coinciding with the axis of the flame generated by the burner.
  • the means for adjusting an overpressure in the enclosure include preferably a calibrated valve arranged on a circuit of evacuation of the supplement of gas supplied by the combustion of the at least one burner.
  • Means for changing the height of the treatment area according to the variation in the height of the load of capitaous material to be treated and a seal around said load may comprise a screen height variable arranged vertically between the load of the ligneous material to be treated and the bottom of the heating chamber.
  • the sealing of said load is in further provided by longitudinal brackets provided on the support of the load, said angles being arranged to cooperate with the edge of bins recovery located at the bottom of the enclosure.
  • the device also comprises means arranged to introduce gas neutral in the treatment enclosure during the cooling phase of said enclosure.
  • the device 10 intended for heat treatment at high temperature of a load of wood material 11 such as wood by continuous circulation of a coolant heated to a temperature greater than 230 ° comprises a chamber 12 of treatment.
  • This enclosure is present in the general form of a parallelepiped with a rectangular base and comprises four vertical walls 13, 14, 15 and 16 and a ceiling 17. These walls and ceiling are made of two metal plates between which is placed a thermally insulating material.
  • the inner walls of the enclosure are preferably made of a stainless steel sheet.
  • the front wall 16 of the enclosure 12 is provided a door 18 for loading the ligneous material to be treated 11.
  • the enclosure 12 is provided in its upper part, at a distance between 0.20 and 1.50 meters from the ceiling 17, a partition 19 whose width is lower than that ceiling and which defines, between it and said ceiling, a chamber called heating chamber 20, opening into the enclosure by the opening 21 formed by the difference in width between the partition 19 and the ceiling 17, and a zone called treatment zone 22 in which the material ligneous to be treated is introduced.
  • the heating chamber 20 is provided on its longitudinal wall 14 with heating means such as one or more burners 23 preferably with gas and adjustable power for heating the heat transfer fluid to its point concentration and reduce the oxygen content.
  • the flame 24 of each burner 23 extends horizontally between the ceiling 17 and the partition 19 and is surrounded by a fluid concentration means under the form of plates 25 arranged to delimit a cone 26 whose axis is confused with that of the flame 24 generated by the burner 23.
  • This cone 26 is associated with a distribution deflector 27 which makes it possible to homogenize the concentrated stream of gas emitted by the hot burner before entering the treatment zone 22 through the opening 21 of the chamber 20.
  • Fluid circulation means in the form of fans 28 are also housed in the heating chamber 20 and are arranged vertically on each side of the burners 23 between the ceiling 17 and the partition 19 in which they debouch. These fans are cooperating with the opening 21 for circulating the heat transfer fluid between the upper volume of the heating chamber 20 and the lower volume defining the zone of treatment 22.
  • the underside of the partition 19, which forms the top of the treatment zone 22, comprises means for regulating the temperature and humidity of the treatment enclosure 12.
  • These means are in the form of a horizontal spray boom 30 high pressure water, attached to the outlet of the heating chamber 20 under the edge of the partition 19 defining the opening 21.
  • This water spray boom 30 is provided with a sufficient number of nozzles to spray high volume fog and is supplied with cold water, or possibly refrigerated, by means known in themselves who are not represented. It is intended to moisten the treatment zone 22 during the temperature rise of the chamber 12, to stabilize its temperature during the treatment of the material load 11, and to allow its cooling in successive stages after the treatment.
  • the load of ligneous material to be treated 11 which, in this case, consists of wooden boards stacked one on the other to form substantially a parallelepipedic structure placed on a movable support 31, is put in place in the enclosure 12 by the loading door 18.
  • boards are placed so that their length lies in the direction of the enclosure, and they are separated from each other by spacers in the form of spacers 32 placed in their direction transverse.
  • the thickness of these spacers is defined according to the thickness of the wood to be treated, the dimensions of the load and the parameters physical flow of fluid in the chamber and in said load.
  • the support 31, on which the wood to be treated is stacked, is movable by the intermediate wheel 33 moving on two longitudinal rails 34 arranged at the bottom of the enclosure.
  • This support is also provided with two longitudinal angles 35 in inverted L shape which cooperate each with the vertical edge of two trays 36 arranged at the bottom of the enclosure, from and other of the load to be treated. These bins are intended for the recovery of runoff and condensation runoff occurring during treatment.
  • This connection between the mobile support 31 and the bins of recovery 36 makes it possible to close the existing passage under the support and seals between the bottom of the walls of the enclosure and the load of material to be treated.
  • the load of ligneous material treat 11 delimits a first volume, said booster chamber 40, located between said load and the wall 13 of the enclosure defining the opening 21, and a second volume, said recovery chamber 41, located between the load and the wall opposite 14 of the enclosure 12.
  • the means of concentration of the fluid and the arrangement of the opening 21 cause a circulation of said fluid in the transverse direction of the zone of treatment 22, that is to say from the booster chamber 40 to the chamber of recovery 41 passing through the load 11 of the woody material to be treated.
  • the fans 28 then suck the heat transfer fluid at the level of the partition 19 in the recovery chamber 41 and pulsate in the chamber of heating 20 downstream of the burners 23.
  • the seal around the load is also obtained by modifying the height of the treatment zone 22 according to the variation of the height the load of woody material to be treated.
  • the treatment zone 22 is provided with a height-adjustable screen 42 arranged vertically between the top of the load 11 of ligneous material to be treated and the partition 19 forming the bottom of the heating chamber 20 and therefore the ceiling of this treatment area. This screen allows the removal of a traffic of the coolant and maintaining a constant pressure in the treatment zone 22.
  • Orifices 44 formed in the lower part of the wall 14 of the recovery chamber 41 of the enclosure and regularly distributed on this wall, allow the evacuation of additional gas produced by the supply of combustion of burners and increase of volume of heat transfer fluid when raising the temperature.
  • These orifices 44 open into a horizontal collector 45 located outside the enclosure 12, this collector being itself connected to a series of vertical tubes 46 forming a condenser and debouching in a chimney 47 via a circuit discharge 48 provided with a sealed valve 49.
  • This valve which is tared, is the means for adjusting the pressure in the treatment chamber 12.
  • the treatment zone 22 is furthermore provided with several ramps 50 horizontal sprinklers fixed on each longitudinal wall 13, 14 of the enclosure. These ramps are designed to be put into operation in case of accidental ignition of the charge 11 and are connected to appropriate flows 51.
  • outlets 52 arranged at the bottom of the enclosure 12 allow the flow of liquids recovered in recovery bins 36.
  • the chamber 12 is sealed by the establishment of joints sealing at the door 18 and siphons at the openings evacuation 52.
  • the control of the temperature and the humidity rate prevailing in the enclosure course of treatment is obtained by probes of temperature and rate hygrometry (not shown) known per se and arranged on each longitudinal inner walls 13, 14 of the enclosure. Another probe also housed in the enclosure allows a permanent control of the content in oxygen of the coolant.
  • a supply of neutral gas is made by an arrival (not shown) formed in one of the walls of the treatment chamber 12.
  • Programmable electronic means not shown allow the management of temperature changes and humidity levels in the treatment chamber.
  • the operating principle of the device of the invention is based on a continuous circulation of the coolant gas formed by the air removed from its oxygen and mixed with the flue gases to provide an atmosphere neutral. After being heated in successive stages to a temperature minimum of 230 °, these levels being defined from the parameters of the capitaous material to be treated, the heat-transfer gas circulates continuously during the whole of treatment cycle, from the point where it is warmed by the burners to the load of ligneous material to be treated that it crosses at a balanced rate and speed in any point of his circuit by bringing him homogeneous calories necessary for heat treatment.
  • This pulsed circulation by fans is conditioned by the cones that concentrate the volume into a reheating point and by deflectors that homogenize the fluid before its introduction at low speed into the booster chamber, while that a pressure of order 4 mmCE in the enclosure is regulated by the flap tare placed in the chimney.
  • the fluid After passing through the load to be treated, passage during which there is a heat exchange between the fluid and the charge, the fluid arrives in the recovery chamber at a pressure and a different from those of your booster chamber. So he is picked up by the fans and warmed up and reconditioned in the room's heating before a new passage through the load.
  • the treatment cycle requires several passages of the fluid through the load.
  • the enclosure may be equipped with a second door for unloading the woody material after processing and moving the load support can be automated. It is also possible to modify the positioning of the burners and fans.
  • the device may also be provided with an element intended to treat the air to lower the oxygen content.
  • the device means for modifying the height of the treatment area according to the variation of the height of the load of ligneous material to be treated composed of a pressure plate of a surface at least equal to the horizontal surface of said load.
  • Said pressure plate is placed on the ceiling of the treatment area and remains attached to it by means of suspension and operating means such as at least one jack, not shown, making it possible to raise said pressure plate, to lower it on the load of woody material to be treated after introduction of the latter into the treatment chamber and to apply on said load a constant pressure throughout the duration of the treatment to avoid deformations.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Resistance Heating (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Drying Of Solid Materials (AREA)

Claims (17)

  1. Vorrichtung zur Wärmebehandlung bei hoher Temperatur einer holzartigen Charge bestehend aus gestapelten Elementen und insbesondere einer Holzcharge, wobei die Vorrichtung mit einem Behandlungseinschluss (12) versehen ist, der Folgendes umfasst:
    Aufbereitungsmittel einer Charge (11) zu behandelnden holzartigen Stoffs,
    Heizmittel (23) eines Wärmeträgers, der in dem Einschluss (12) zirkuliert,
    Mittel zum kontinuierlichen Umwälzen des Wärmeträgers,
    Mittel zum Prüfen der Temperatur und der Luftfeuchtigkeit des Einschlusses,
    dadurch gekennzeichnet, dass sie Mittel zum Regulieren der Temperatur und der Feuchtigkeit des Behandlungseinschlusses umfasst, die eingerichtet sind, um den Einschluss während seines Temperaturanstiegs mit Feuchtigkeit zu versorgen, seine Temperatur während der Behandlung der Charge aus holzartigem Stoff durch kontinuierliche Zirkulation des Wärmeträgers zu stabilisieren und sie nach der Behandlung in aufeinander folgenden Stufen abzukühlen.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass sie Mittel zum Konzentrieren des Wärmeträgers umfasst.
  3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass sie Mittel zum Einstellen des Drucks, der in dem Behandlungseinschluss (12) herrscht, umfasst, wobei die Mittel eingerichtet sind, um in dem Einschluss einen Überdruck aufrechtzuerhalten.
  4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Mittel zum Aufbereiten der Charge aus zu behandelndem holzartigen Stoff zwischen den gestapelten Elementen Spreizorgane (32) umfassen, deren Maße in Abhängigkeit von den Maßen der Charge (11) des zu behandelnden holzartigen Stoffs definiert sind.
  5. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Einschluss (12) in seinem oberen Teil eine Heizkammer (20) umfasst, die eingerichtet ist, um den Wärmeträger nach jedem Durchlauf durch die Charge (11) aus zu behandelndem holzartigen Stoff zu erwärmen und die über eine Öffnung (21), die in dem Boden (19) der Kammer eingerichtet ist, mit dem unteren Teil des Einschlusses, der eine Behandlungszone (22) bildet, kommuniziert.
  6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass sie Mittel zum Modifizieren der Höhe der Behandlungszone (22) in Abhängigkeit von der Schwankung der Höhe der Charge (11) aus zu behandelndem holzartigen Stoff umfasst.
  7. Vorrichtung nach Anspruch 1, 2 und 5, dadurch gekennzeichnet, dass die Mittel zum Konzentrieren des Wärmeträgers eingerichtet sind, um mit den Mitteln zum Heizen des Wärmeträgers zusammenzuwirken, die in der Heizkammer (20) des Wärmeträgers angeordnet sind, um im Einschluss eine bessere Homogenisierung der Temperatur und eine neutrale Umgebung durch Zerstören des Sauerstoffs zu erzielen.
  8. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Mittel zum Heizen des Wärmeträgers mindestens einen Gasbrenner (23) umfassen.
  9. Vorrichtung nach Anspruch 7 und 8, dadurch gekennzeichnet, dass der Wärmeträger, der in dem Einschluss (12) eine neutrale Atmosphäre definiert, aus einem Gemisch aus Luft, die ihres Sauerstoffs entledigt ist, und aus Rauchgasen des Brenners (23) gebildet ist.
  10. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Einschluss (12) Mittel umfasst, die eingerichtet sind, um eine Abdichtung um die Charge (11) aus zu behandelndem holzartigen Stoff sicherzustellen.
  11. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass sie programmierbare elektronische Mittel zum Verwalten der Temperaturschwankungen in dem Behandlungseinschluss (12) umfasst.
  12. Vorrichtung nach Anspruch 1 und 5, dadurch gekennzeichnet, dass die Mittel zum Regulieren der Temperatur mindestens eine Wassersprührampe (30) umfassen, die am Ausgang der Heizkammer (20) des Wärmeträgers angeordnet ist.
  13. Vorrichtung nach Anspruch 2 und 8, dadurch gekennzeichnet, dass die Mittel zum Konzentrieren des Wärmeträgers mindestens einen Konzentrationskegel (26) umfassen, der mit mindestens einem Verteilungsablenker (27) kombiniert ist, der eingerichtet ist, um den konzentrierten Strom heißen Gases zu homogenisieren, wobei die Achse des Kegels mit der Achse der Flamme (24), die von dem Brenner erzeugt wird, zusammenfällt.
  14. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Mittel zum Einstellen eines Überdrucks in dem Einschluss eine tarierte Klappe (49) umfassen, die auf einem Ableitungskreislauf (48) des Gaszusatzes angeordnet ist, der durch die Verbrennung des mindestens einen Brenners (23) beigesteuert wird.
  15. Vorrichtung nach Anspruch 6 und 10, dadurch gekennzeichnet, dass die Mittel zum Modifizieren der Höhe der Behandlungszone in Abhängigkeit von der Schwankung der Höhe der Charge (11) aus zu behandelndem holzartigen Stoff und zum Sicherstellen einer Abdichtung um die Charge einen Schirm (42) mit veränderlicher Höhe umfassen, der vertikal zwischen der Charge (11) aus zu behandelndem holzartigen Stoff und dem Boden (19) der Heizkammer (20) angeordnet ist.
  16. Vorrichtung nach Anspruch 10 und 15, dadurch gekennzeichnet, dass die Mittel zum Sicherstellen einer Abdichtung um die Charge (11) aus zu behandelndem holzartigen Stoff ferner Längswinkelprofile (35) umfassen, die auf dem Träger (31) der Charge eingerichtet sind, wobei die Winkelprofile eingerichtet sind, um mit dem Rand von Auffangbehältern (36), die auf dem Boden des Behandlungseinschlusses (12) angeordnet sind, zusammenzuarbeiten.
  17. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass sie Mittel umfasst, die eingerichtet sind, um während der Kühlphase des Einschlusses neutrales Gas in den Behandlungseinschluss (12) einzuführen.
EP00907740A 1999-03-09 2000-02-29 Vorrichtung zur hochtemperaturwärmebehandlung von holzartigem material Expired - Lifetime EP1133666B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9903179A FR2790698B1 (fr) 1999-03-09 1999-03-09 Dispositif pour le traitement thermique a haute temperature d'une matiere ligneuse
FR9903179 1999-03-09
PCT/FR2000/000492 WO2000053985A1 (fr) 1999-03-09 2000-02-29 Dispositif pour le traitement thermique a haute temperature d'une matiere ligneuse

Publications (2)

Publication Number Publication Date
EP1133666A1 EP1133666A1 (de) 2001-09-19
EP1133666B1 true EP1133666B1 (de) 2005-10-26

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EP00907740A Expired - Lifetime EP1133666B1 (de) 1999-03-09 2000-02-29 Vorrichtung zur hochtemperaturwärmebehandlung von holzartigem material

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EP (1) EP1133666B1 (de)
AT (1) ATE308025T1 (de)
AU (1) AU2922100A (de)
DE (1) DE60023444T2 (de)
ES (1) ES2250106T3 (de)
FR (1) FR2790698B1 (de)
WO (1) WO2000053985A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
FR2857291B1 (fr) * 2003-07-07 2006-09-08 Daniel Besson Procede et dispositif de traitement thermique haute temperature de matiere ligneuse
FR2861009A1 (fr) * 2003-10-15 2005-04-22 Alain Dulac Procede et dispositif de sechage a haute temperature de materiau ligno-cellulosique
US9726429B1 (en) * 2016-01-31 2017-08-08 EPCON Industrial Systems, LP Wood processing oven and method
CN105674695A (zh) * 2016-02-23 2016-06-15 王亚萍 一种天然气二极管干燥箱
WO2017190209A1 (en) * 2016-05-04 2017-11-09 Jacques Roy Integrated unit for treatment and drying lignocellulosic material
US10487283B1 (en) 2018-03-20 2019-11-26 EPCON Industrial Systems, LP Regenerative thermal oxidizer with secondary and tertiary heat recovery

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US3269715A (en) * 1964-04-02 1966-08-30 Jr Walker L Wellford Kiln furnace controller
US3614074A (en) * 1969-11-14 1971-10-19 Moore Dry Kiln Co Direct-fired kiln furnace control system
US4098008A (en) * 1976-11-08 1978-07-04 Wellons, Inc. Dry kiln having bidirectional air flow with unidirectional fan rotation
DE3340489A1 (de) * 1983-11-09 1985-08-14 Lignomat GmbH, 7148 Remseck Verfahren zum trocknen von schnittholz
US4953298A (en) * 1989-02-24 1990-09-04 Wagner Electronic Products, Inc. Kiln controller
JP2516467B2 (ja) * 1990-10-12 1996-07-24 石井 拓司 木材乾燥装置
US5778557A (en) * 1992-09-23 1998-07-14 Food Plant Engineering, Inc. Temperature and atmosphere control system for stored products
US5276980A (en) * 1992-11-12 1994-01-11 Carter John L Reversible conditioned air flow system
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DE69502692T2 (de) * 1995-03-02 1999-02-25 Jiro Sato Verfahren und Vorrichtung zum Trocknen von Holz
FI953913A (fi) * 1995-08-21 1997-02-22 Valmet Corp Puutavaran kuumakuivauksen/lämpökäsittelyn yhteydessä käytettävä jäähdytysmenetelmä ja laite
FR2757097B1 (fr) * 1996-12-13 1999-01-29 Bci Dispositif et procede de traitement a haute temperature de materiau ligno-cellulosique
US5878509A (en) * 1997-03-07 1999-03-09 Ifi, Inc. Baffled wood drying kiln and process
US5836086A (en) * 1997-05-21 1998-11-17 Elder; Danny J. Process for accelerated drying of green wood

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Publication number Publication date
EP1133666A1 (de) 2001-09-19
FR2790698B1 (fr) 2001-07-06
ATE308025T1 (de) 2005-11-15
DE60023444T2 (de) 2006-07-20
FR2790698A1 (fr) 2000-09-15
ES2250106T3 (es) 2006-04-16
WO2000053985A1 (fr) 2000-09-14
AU2922100A (en) 2000-09-28
DE60023444D1 (de) 2005-12-01

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