Patent ID: 6742283
Filing Date: 2004-06-01
Classification: F26B

Abstract:
A method for drying wood comprising the steps of:putting fuel into a combustion chamber arranged in a lower area of a combustion gas generating furnace; burning the fuel to generate a high-temperature combustion gas in the furnace; introducing the combustion gas generated by the burning of the fuel in the furnace into an upper area of a drying room housing wood to be dried to thereby thermally dry the wood; controlling a discharge of a drying room atmosphere including air and combustion gas from the drying room through a chimney; controlling the introduction of the combustion gas generated in the furnace into the drying room based on the discharge of the drying room atmosphere through the chimney; and controlling a recovery flow of air and combustion gas from the drying room into the furnace, the discharge of the drying room atmosphere, the introduction of the combustion gas into the drying room and the recovery flow of air and combustion gas into the furnace being controlled to maintain a concentration of combustion gas in the drying room in a range of 60% to 95% by volume and the pressure of the drying room atmosphere in a range of 1.5 to 5 atmospheres.