How does a box dryer dry wood

The process of drying wood with a box dryer is a complex process that requires multiple steps and considerations. The following is an overview based on general principles and practical operational experience:

wood dryer

Wood drying oven

1.Preparation stage

• Ensure that the wood is clean and free of impurities, and perform preliminary treatments as needed, such as removing bark, cutting, etc.
• Place the wood neatly on pallets or in the drying room, avoiding overlap to ensure even circulation of hot air.
• Check if all components of the box dryer are intact, such as the heater, fan, and dehumidification system.
• Ensure that the drying room is free of debris and has good sealing to reduce heat loss and moisture leakage.

2.Heating stage

• When preheating is completed and the temperature inside the drying room reaches 55 degrees or above, dehumidification begins.
• The dehumidification time is generally controlled at 20-30 minutes, adjusted according to the humidity in the drying room and the degree of dryness of the wood.
• After dehumidification, the temperature will decrease slightly and gradually increase, but the maximum temperature generally does not exceed 70 degrees.
• During the entire drying process, multiple dehumidification operations are required to ensure the smooth drainage of moisture from the wood.

3.Drying stage

Box type dryer

• At this stage, the moisture in the wood evaporates at a relatively constant rate.
• The air temperature, humidity, and wind speed need to be relatively stable to ensure the drying effect.
• When the moisture content of wood decreases to a certain extent, the evaporation rate of water will gradually slow down.
• At this point, it is necessary to lower the drying temperature or adjust the dehumidification frequency appropriately to avoid excessive drying or cracking of the wood.

4.End stage

• After drying, take samples to check the moisture content and drying quality of the wood.
• Ensure that the wood meets the predetermined drying standards.
• Slowly reduce the temperature inside the drying room to gradually adapt the wood to the external environment.
• Open the drying room door, take out the dried wood and store it properly.

Wood block dryer

5.Precautions for Drying

• During the drying process, it is necessary to closely monitor the temperature and humidity changes in the drying room and adjust the drying parameters in a timely manner.
• Avoid defects such as cracking and deformation of wood during the drying process.
• After drying, it is necessary to clean the drying room and equipment in a timely manner for the next use.