Wood drying method

F - Mech Eng,Light,Heat,Weapons – 26 – B

Patent

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Details

F26B 23/02 (2006.01) B27K 5/00 (2006.01) F26B 9/06 (2006.01) F26B 21/10 (2006.01) F26B 21/14 (2006.01)

Patent

CA 2402065

A wood drying method comprising the steps of charging a ligneous fuel, such as waste wood, into a combustion chamber (4a) disposed in the lower region of a combustion gas generating furnace (4) to burn the same, introducing the high temperature combustion gases generated by this combustion into the upper region of a drying chamber (1) in which undried wood has been stored, whereby the wood is heat-dried by the combustion gases, wherein the wood is efficiently dried in a short time by heat-drying the same while maintaining the combustion gases in the drying chamber atmosphere at high concentration. Further, the wood is efficiently dried in a shorter time by sealing the drying chamber to maintain the pressure of the drying chamber atmosphere at high values.

L'invention concerne un procédé de séchage du bois, comprenant les étapes consistant à charger un combustible ligneux, tel que des chutes de bois, dans une chambre de combustion (4a) placée dans une zone inférieure d'un four (4) produisant du gaz de combustion, de manière à brûler ce combustible ligneux; à introduire les gaz de combustion haute température produits par cette combustion dans la zone supérieure d'une chambre de séchage (1) dans laquelle on a stocké le bois non séché. Le bois est ainsi séché par séchage thermique grâce aux gaz de combustion de manière efficace et dans un temps réduit, une concentration élevée des gaz de combustion présents dans l'atmosphère de la chambre de séchage étant maintenue. De plus le bois est séché efficacement dans un temps encore réduit par fermeture hermétique de la chambre de séchage de manière à maintenir la pression de l'atmosphère de la chambre de séchage à des valeurs élevées.

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