Firstly, it is necessary to understand a little about the moisture carrying capacity of air. A cubic metre of air at 20 deg. centigrade and 100% relative humidity will hold around 14 grams of water. If you were to heat the same cubic metre of air up to 70 deg. centigrade it would be holding around 400 grams of water at 100% relative humidity.

The carbonization process of carbonized wood is divided into the following three processes: Step 1: Heat up and dry at high temperature in the cellar Heating up, the kiln temperature rapidly rises to 100 ° C.

Thermal modification is currently the most successful and economically significant wood modification method in terms of industrial promotion and application.

Compared with the conventional drying, vacuum wood drying kiln can be achieved under the condition of low temperature rapid drying of wood, and ensure the quality of wood drying, largely avoid the generation of wood shrinkage defects.Through expert analysis to explore the discovery, cypress, for example, above the fiber saturation point, vacuum drying rate for conventional dry 2.34 ~ 2.88 times;While in the FSP, is 2.90 ~ 4.14 times.

Below for everyone to introduce wood drying equipment of energy conservation and consumption reduction method: 1. The application of inverter in the wood drying equipment, greatly save energy in drying equipment, using fan iscompared commonly big, and the fan are almost continuous operation, after using the inverter can save 30% energysaving. After the use of frequency converter, on the other hand, the overall equipment will drop a lot of noise, and prolongs the service life of wood drying equipment.

Evaporation of moisture from the wood surface always takes place at a certain temperature, humidity and air velocity. Under normal circumstances, the humidity of the air in the drying kiln is always less than 100%, while the temperature of the air is much higher than normal temperature. Therefore, the equilibrium moisture content of the air is lower than that of the wood surface, and the moisture on the wood surface evaporates into the air. How quickly water evaporates from the wood surface depends on the temperature and humidity of the air. When the air temperature rises or the humidity decreases, the evaporation rate of water on the wood surface is accelerated; on the contrary, the lower the air temperature, the greater the humidity, and the slower the evaporation rate of surface water.

Wood drying refers to the process of using external energy to convert water in wood into steam and expel it. The drying of wood can be divided into two categories: natural drying and artificial drying.

Internal stress, also known as internal force, is caused by uneven drying shrinkage. For example, when the surface of wood has started to dry and shrink, and the interior of the wood is still moist, the surface may dry and shrink while the interior does not, resulting in internal stress. When a straight and dry wooden board is sawed into a thin plate, it should immediately experience a phenomenon of warping, which is a manifestation of internal stress in wood. If a sawn wooden board has a convex surface facing inward, it indicates external tension and internal pressure.

As a heat exchange device that can continuously output heat, boilers are used in almost all fields of production. They not only have high efficiency but also greatly reduce the labor cost of enterprises. So, what are the selection methods for steam boilers used for drying wood? What is the special type of dry boiler? Let's learn about Zhongzheng Boiler together.

For a person engaged in wood drying production, it is best to have diligent eyes, ears, legs, mind, mouth, and learning.