The drying process of wood chips is one of the important processes for the utilization of wood chips. It is dried by a wood chip dryer to remove excess water and made into biomass fuel. But at present, many users do not know much about the dryer. The basic knowledge of the dryer is briefly introduced below.

There are many types of dryers, which can be divided into belt drying, drum drying, box drying, and tower drying. The heat sources are also divided into coal, natural gas, and gas oil. At present, the more commonly used for drying wood chips is the drum type wood chip dryer. The principle is that the hot air continuously flows and is in full contact with the dispersed material, and the heat energy is transferred to the material through heat conduction, so that the moisture of the material is continuously evaporated in the cylinder, through the inner spiral stirring, sweeping, the material activity is promoted to complete the entire drying process.

There are also a variety of drying techniques for tumble dryers. For example, the three-cylinder sawdust dryer developed by Zhengzhou Jiutian effectively extends the drying stroke of wet materials and hot air in the machine. Leading drying technology coupled with sealing, heat preservation and reasonable compared with other common dryers, this equipment greatly improves the drying efficiency.