Method for drying saw timber and device for implementing said method
AssigneeValeurs Bois Industrie
InventorsBernard Dedieu, Abdelaâziz Bouirdène
Life of this patent
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Abstract
The invention relates to a process for drying wood, characterized in that it comprises a pressurizing step to place a sealed chamber (1) under a predetermined pressure by injecting or generating saturating steam and maintaining this pressure for a predetermined time interval, while ensuring a forced circulation of air and saturating steam within the chamber, a heating step to heat the wood core and central zone of the wood pieces by emitting microwaves at frequencies ranging between 400 and 2450 MHz, an evacuation step to carry away the liquid exudates from the wood which run down to the bottom of the chamber (1) where they are collected.
Claims33
Wood drying process wherein the wood drying process comprises:
- a pressurizing step to place at least one sealed chamber (1) under a determined pressure of saturating steam and maintain this pressure for a determined time interval while ensuring forced circulation of air and saturating steam within the chamber;
- a heating step, to heat the wood core and all zones of the wood pieces to be dried, by emitting microwaves;
- an evacuation step, to carry away the liquid exudates yielded by the wood and running down to a bottom of the chamber (1) where they are collected.
Extraction method for extracting chemical components from wood including the following steps:
- injection saturing steam into a sealed chamber under a determined pressure and maintaining this pressure for a determined time interval while ensuring forced circulation of air,
- heating of the wood by emitting microwaves, the power of which is adapted with respect to the zone of the wood to which the power is applied, and
- evacuation of the liquid exudates for further extraction of chemical components therefrom.
Dependencies are inferred from the claim text.