3.2. Pinning, cavity and air lock in radial bed
Compared to rectangular bed, the gas processing capacity is further
increased in the radial bed. It makes the radial bed has unique
advantages in industrial utilization. Based on the above analysis, some
abnormal phenomena are controlled by gas-solid baffles in rectangular
bed. It may have similar effects in the radial bed. However, in the
rectangular bed, the best location of the baffles will be in the middle
of the bed for its gas symmetrical flows; in the radial bed, the best
location is not in the middle of the bed for its gas asymmetrical flows.
Thus, the further research is mainly focused on the investigation of the
gas-solid flow in the radial bed of type CA and CB, especially the best
location of the baffles.
3.2.1 Pressure distribution
under different gas flow rates
In the radial bed, the pressure
drop increases with the gas superficial velocity, which can be roughly
calculated by equation (9). In particular,in semi-cylindrical radial bed
and in cylindrical radial bed.
(9)