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The application field of wood vacuum drying equipment will be welcomed.

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The application field of wood vacuum drying equipment will be welcomed.

Date of release:2018-03-30 Author: Click:

Vacuum wood drying equipment has done a lot of work on the technical specifications of wood drying, one of the important aspects is to formulate a series of national and industrial technical standards, which provide the basic basis for the technical specifications of wood drying equipment market in China. However, due to inadequate publicity, information exchange is not smooth, the grass-roots level of standards and norms do not know, some do not know; some one-sided implementation; some do not listen to, do our own thing, causing technical chaos in the market, affecting the quality of products and the credibility of merchants, harming the interests of users, causing unnecessary. Disputes.

Vacuum drying equipment, such as far infrared drying equipment, microwave drying equipment and other special areas of users will gradually expand the number of applications. In the field of food and drug drying, the demand for larger specifications of vacuum freeze-drying equipment will increase, the demand for functional combination equipment will also increase, high automation drying equipment will be welcomed in some application fields. The appearance quality of drying equipment will be paid more and more attention. The corrosion resistance and reliable performance of corrosive material drying equipment will be paid special attention by users.

Vacuum drying of wood is a method of drying wood in an airtight container under atmospheric pressure. Under vacuum conditions, the boiling point of water decreases and the evaporation rate increases, thus accelerating the drying rate of wood at lower temperatures. In the process of wood drying, on the one hand, the surface moisture evaporates into the surrounding air; on the other hand, the internal moisture is constantly moving to the surface.

Normally, the evaporation rate of water on the surface of wood is much faster than that of water in the interior of wood. Therefore, to speed up drying speed, we must try to speed up the movement of moisture inside the wood. Among the factors affecting the speed of moisture movement in wood, the pressure of surrounding air is the decisive factor. If the air temperature and humidity remain unchanged, the speed of moisture movement of wood increases sharply with the decrease of air pressure.

Under vacuum condition, the boiling point of water decreases, and the evaporation rate of water on the surface of wood increases, and the water content gradient on the surface and inside of wood increases. At the same time, the water on the wood surface evaporates violently, and a large amount of heat of vaporization should be absorbed, which will cause the cooling of the wood surface and increase the temperature gradient between the wood surface and the interior. These factors accelerate the movement of moisture inside the wood to the surface.

Wood vacuum drying equipment


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Key word:Woodvacuumdryingequipment

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