The standard static fluidized bed is composed of a plenum for gas injection, a fluidization plate for a homogeneous air distribution and a hood for product conveying and gas exhaust. Fluidization plate may be from different types : perforated sheets, porous metal, oriented air jet, nozzles, or other type depending on processes and applications. The plenum chamber is generally subdivided into several sections to provide the optimum fluidization velocity at each stage of processing.

The temperature of the processing gas can be adapted for each plenum section. Final section can be a cooling zone. The behavior of the fluidized product is similar to a liquid. The processed product is discharged by overflowing an adjustable weir (typically from 0 to 300 mm).