  As most classical fluidization technologies, Circulating Fluidized Beds (CFB)
are widely employed in chemical and physical operations. However, CFB Reactors
still have some disadvantages such as the non-uniform solid particles
distribution and the backflow of the solid particles near the wall, which
deteriorate the system mixing, and lead to low system conversion/heat and mass
transfer rate. To improve the CFB performance, we propose in the current work
to study the effect of the ring baffle configuration on the fluidization system
hydrodynamics using a multifluid Eulerian CFD model, incorporating the Kinetic
Theory of Granular Flow. In this approach, two different types of ring baffles,
circular and trapezoidal, were considered and the corresponding results were
compared. The results revealed that the incorporation of ring baffles improved
the system mixing and reduced the backflow near the wall. Nevertheless, the
shape of baffles had a limited impact on the system hydrodynamics.
