The invention concerns a process for producing propylene, especially from
a light steam cracking and/or catalytic cracking cut, preferably
comprising both butenes and pentenes, said process comprising a step for
moving bed catalytic cracking with a catalyst regeneration loop. The
catalyst comprises at least one zeolite with a zeolitic composition with
a Si/Al ratio which is preferably less than 130.The invention can produce
a high conversion with a good yield of propylene at a high space
velocity, meaning that the volume of catalyst can be reduced.