The inherent rigidity of the circular fluid bed processing chamber exceeds that of traditional rectangular fluid bed processors, allowing materials of construction to be down-gauged and vibratory motors to be downsized. Associated components are also eliminated, such as multiple air inlets and outlets, the circular unit requiring only one of each. As a result, the dryer is said to be lighter, stronger, and more energy-efficient at equivalent capacities.
Reductions in material, weld seams, and associated labor decrease fabrication cost, particularly when units are finished to FDA, USDA, BISSC, or 3-A standards.
Cleaning time is cut in half due to stainless steel material contact surfaces, reduced weld seams, a quick-disconnect housing, and lack of internal cross members, according to the company.
Compactness and lightweight allow configuring of complete systems or modules containing the blower, heater, and programmable controls on skid-mounted frames, requiring only on-site connections to a power source, dust collector, and material inlet/outlet. Material fed into the top inlet of the dryer descends into the fluid bed chamber where it vibrates on a circular screen within a rising column of heated air ducted into the bottom of the chamber from the upstream heater/blower. The continuous airflow, and vibration induced by two vibratory motors and spring suspension, separate and fluidize individual particles, maximizing surface
area and drying efficiency. The vibratory action also causes the material to travel from the center of the screen to a discharge spout at the screen’s periphery in controlled spiral pathways on a “first-in/first-out” basis.
The circular fluid processing unit is offered in diameters from 18 to 84 in. (460 to 2135 mm), encompassing batch and continuous applications from low-capacity laboratory and pilot plant testing to medium-high volume production. All are available configured for drying/heating, cooling or moisturizing applications. Available options include centrifugal sifters to deagglomerate moist incoming material; spray nozzles to coat dried particles; and vibratory screeners to scalp, classify or dedust dried material.