Fluidized Bed, Spouted Bed, and In-Store Drying of Grain

Two-stage drying is the concept that optimal drying of a product may sometimes be best achieved by breaking down the drying process into two stages, a high-moisture stage and a low-moisture stage. The reasons for doing this vary, and include thermal efciency, greater throughput, and improved quality. Different forms of two-stage systems have been developed over the last few decades for the main grain crops. This chapter describes the equipment components for two-stage drying systems.