1. Preservation and Quality: By reducing the moisture content of products, the growth and reproduction of microorganisms can be inhibited, extending the shelf life and achieving long-term preservation. Examples include the drying of grains, beans, dried fruits, and seafood.
2. Reduced Transportation Costs: Drying can reduce the volume and weight of products, lowering transportation and storage costs. Examples include the drying of wood and paper products.
3. Improved Quality: Proper drying can improve the flavor and color of food, enhancing its taste and commercial value. Examples include the drying of grapes, vegetables, and meat products.
4. Increased Efficiency: Drying equipment allows for continuous automated production, increasing production efficiency and capacity, and enabling batch production. Examples include the production of grains and beans in dryers.
5. Recovery and Concentration: Volatile components in materials can be recovered or concentrated. Examples include the drying of coffee beans, spices, and traditional Chinese medicine.
6. Other: For example, converting liquid or paste-like materials into powder or granules for easier packaging and transportation; chemical drying for dehumidification and crystallization, etc.