High-temperature heat treatment method for wood

Abstract

The invention provides a high-temperature heat treatment method for wood. The high-temperature heat treatment method for the wood is mainly characterized by comprising the following steps of tidily placing the wood on a special external frame rail in a mode of tidily placing one wood plate and one filler strip layer by layer, and feeding the wood into closed special equipment by using an electric material vehicle. A heat exchanger is placed in the special equipment, air in the equipment generates convective circulation through a transmission fan, the air exchanges heat with the heat exchanger, the wood is uniformly heated, the temperature of the air in the equipment is increased to 4 to 10 DEG C per hour and gradually increased to 140 to 240 DEG C according to different types and thicknesses of the wood, the wood is slowly heated, and the highest temperature can reach 240 DEG C. The high-temperature heat treatment method for the wood has the advantages that the wood is uniformly heated from inside to outside; in the whole process, the air humidity in the special equipment is ensured to be always in a 100-percent state, the physical characteristics of the wood can be guaranteed, and deformation is avoided; oxygen is isolated, so that the oxygen content in air in the special equipment does not exceed 2 percent; and the ideal wood shrinkage and expansion coefficient meeting the technical standard is achieved.

Description

technical field [0001] The invention relates to a wood high temperature treatment method. Background technique [0002] With the development of the national economy, my country's timber market is also developing by leaps and bounds, and the demand for timber has greatly increased. However, timber must be dried before use. At present, wood high-temperature heat treatment equipment is to put wood into a closed space, and change the absorption and release capacity of the hydrophilic factor inside the wood by changing the high temperature within 240 degrees, so that the geometric size of the wood is more stable. During the high temperature heat treatment of wood, intermittent humidification is used to protect the physical properties of wood better. However, the wood drying process is geometrically unstable due to intermittent humidification. Seriously affect product quality. Contents of the invention [0003] The object of the present invention is to provide a high-temperat...

AI Technical Summary

Problems solved by technology

After the wood is treated at high temperature, the coefficient of shrinkage and expansion of the wood will be reduced to varying degrees, so as to ensure that the wood products rarely have problems of cracking, deformation and shrinkage during use.