Air flow is parallel to the solids flow. Because of the short retention time in the dryer, higher outlet air temperatures may be required to achieve low product moistures. Air flow is perpendicular to solids flow. Fluid bed dryer can be provided with multiple zones to match the drying operating conditions with the material drying characteristics. Internal heating coils can be provided for additional heat input.
Air flow is perpendicular to solids flow.
Fluid bed coolers can be provided with internal cooling coils can be provided for additional heat removal. The fluid bed cooler can be the final zone of the fluid bed dryer. Sulfate Sodium Sulfite Calcium Chloride Swenson DTB crystallizers and 8' diameter x 40' parallel-flow dryer for production of ammonium sulfate and drying system for anhydrous sodium sulfate Fertilizer Industries Ammonium Sulfate Plastic Industry PVC Catalyst Swenson Sodium Chlorate Fluid Bed Dryer Waste Streams Misc.