Method and equipment for drying and carbonizing wood integrally on vacuum condition

Abstract

The invention provides equipment for drying and carbonizing wood integrally. The equipment comprises a pressure adjusting system, a heating and cooling system, a material loading, transporting and pressurizing system and a water drainage system; an exo-box heat conduction oil pipe of the heating and cooling system penetrates through a treatment box and is welded to a wall of the treatment box for being sealed; a water inlet valve of the water drainage system is connected to the treatment box and a water drainage box through connection pipelines; and an outer wall of a hydraulic cylinder of the material loading, transporting and pressurizing system is welded to the treatment box in a sealed mode. The equipment has the advantages that the repeated loading, stacking, heating and cooling steps of the drying and heat treating steps of wood are reduced, so that the processing efficiency is improved, and the energy consumption is lowered; a processing method is flexible and multipurpose and the equipment is multifunctional; the whole drying and carbonizing treatment is carried out on the vacuum and negative pressure conditions, the content of air in the treatment box is small, and the oxygen content is low; carbonized wood making contact with a hot plate can be fast cooled; and the wood can be prevented from being deformed, warped and cracked in the vacuum drying and vacuum carbonizing stages.

Description

technical field [0001] The invention relates to a method and equipment for wood drying and carbonization integrated treatment under vacuum conditions, and belongs to the field of wood drying and wood carbonization processing. Background technique [0002] Wood is easy to process, renewable, high strength-to-weight ratio, natural color and beautiful pattern, and excellent environmental characteristics. It is still widely used in the fields of construction, furniture, wood products, and interior decoration. However, as a natural and renewable biological material, wood also has defects such as easy deformation, cracking, decay, insects, mildew, and color difference. The dried wood can reduce the above defects, and it can be used in furniture and wood products processing. But its dimensional stability, weather resistance, corrosion resistance and chromatic aberration etc. of the dried wood still can't meet the use needs in some application occasions. Wood heat treatment has be...

AI Technical Summary

Problems solved by technology

[0003] Wood is usually dried before carbonization. Direct carbonization of wood with high moisture content will lead to defects such as deformation, warping, cracking and uneven carbonization of the wood.

However, the existing carbonization equipment can only perform high-temperature carbonization treatment of wood, and cannot dry wood before carbonization.

Wood is usually kiln-dried to a certain moisture content (6%-8%), and then sent to carbonization equipment for carbonization treatment, which results in multiple loading, unloading and stacking of materials between different equipment, wasting time and energy , leading to low production efficiency

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