4. Direct gas-solid contact heat exchange

4.1 Different types of solid particle contactors

The type of contactor and the material transport mode in the [22] contactor can be defined according to the value of the relative speed u _r in relation to the fall limit speed ${\mu }_r^{\infty }$ and the minimum fluidization speed u _mf (table 10 ).

As a reminder, the minimum fluidization velocity represents the apparent fluid velocity required to support the solid...