A circulating fluidized bed apparatus, using fans, circulating pipes, functional branches and feeding pipes sequentially connected to form one or more circulating channels； the fans and jet streams generated thereby disperse materials into a fluidized state； the fluidized materials circulate and flow at a high speed in the circulating channels to achieve the objectives of the process, efficiently realizing operations such as drying, smashing, evaporating and distilling, concentrating, sieving, mixing, and ultraviolet sterilizing of powdered materials, realizing quick drying at normal temperature, and quickly preparing fresh plant materials into powdered materials at normal temperature. All the operations are performed by one apparatus, thus reducing equipment investment, simplifying production process steps, improving product quality, reducing production costs, and having low energy consumption, wide application and a simple structure.
