The advantages of the CONTACT FLUIDIZER™ include its compact design, high thermal efficiency, and low gas throughput.
This rectangular fluid bed dryer system incorporates back mix and plug flow sections. A rotary distributor disperses the wet feed evenly over the back mix section equipped with contact heating surfaces immersed in the fluidized layer.
The heating surfaces of this fluid bed dryer are designed to avoid deposits and obtain high heat transfer in the fluidized layer and they provide a significant portion of the required energy.
All flowsheet animations are available in the GEA Niro download area.
Thus, it is possible to reduce both the temperature and the flow of gas through the system. This is particularly important for heat sensitive products. Specially designed perforated gill plates allow for handling of oversizes and minimize powder holdup by grade changes.
The heating panels can be inspected or cleaned externally. Cleaning in place (CIP) of the whole plant is often provided. Subsequent plug flow sections are used for postdrying and cooling, if required.