The dryer is the machine that removes moisture from material by using heat, air, or other means.

Biomass dryer is a type of dryer that is designed to dry biomass materials, such as wood chips, sawdust, straw, grass, etc. A biomass dryer can reduce the moisture content of biomass materials to a suitable level for further processing or utilization.

A charcoal dryer is a special kind of drying machine that is used to dry charcoal briquettes. The charcoal dryer can improve the quality and efficiency of charcoal production by reducing the moisture and volatile matter in charcoal products.