Figure 6.4 Moving bed reactors (MBR)

• • These are old generation catalytic cracking reactors

• There are basically four sections namely reactor, generator, catalyst engaging hopper and catalyst disengaging hopper.

• The catalyst disengaging hopper feeds the regenerated catalyst to the reactor.

• After reaction, the products are recovered from the unit.

• The bed moves to the regenerator unit where air is used to regenerate the catalyst

• The regenerated catalyst enters the engaging hopper unit from where using lift media the catalyst is moved to the disengaging hopper unit.