A method of heat treatment of wood under high pressure and humidity

Abstract

Disclosed is a hot and humid high-pressure wood heat treatment method. Wood is treated through a pressure tank, and the pressure tank is put in hot oil, so that the airtight effect of a heat treatment process is guaranteed, and spontaneous ignition cannot occur even though the heat treatment temperature reaches 220 DEG C; a hot oil pool is adopted so that the effect that the temperature is kept consistent all the time in the heat treatment process can be guaranteed, and accordingly the uniformity of wood heat treatment is improved; the moisture content of the wood before treatment is adjusted to saturated water content and always kept in the state of the saturated water content and the wood is always kept in the environment of saturated steam before drying treatment in the step (5); under the action of water molecules, the heat treatment time can be effectively shortened, and the energy consumption of heat treatment is reduced; nutrient substances in the wood are more thoroughly degraded; and the color and luster of the treated wood are more uniform, the wood can be prevented from being cracked in the heat treatment process, and the quality of the heat-treated wood is effectively improved.

Description

technical field [0001] The invention relates to a wood heat treatment process, which is suitable for modifying the wood, so as to improve the dimensional stability, weather resistance and corrosion resistance of the wood and change the color of the wood. Background technique [0002] For a long time, whether it is compared in terms of volume or quality, wood has always ranked first among the four major building materials. It has a series of advantages such as regeneration, easy processing, and natural texture, and is widely used in construction and furniture manufacturing. , interior decoration, etc., but at the same time, as a natural green and environmentally friendly material, wood also has some natural defects, such as deformation, cracking, decay, mildew, color difference, etc. Wood heat treatment is an environmentally friendly wood modification method , has become a hot spot of research and attention in recent years. After the wood is treated at high temperature, its ...

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Problems solved by technology

However, the existing heat treatment process usually has problems such as wood cracking during heat treatment, insufficient degradation of nutrients, long heat treatment time, and high energy consumption.

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