The invention relates to a process for production of propylene in
particular from a C4 and/or C5 cut from steam cracking and/or catalytic
cracking, preferably comprising both butenes and pentenes, said process
comprising at least one oligomerization stage, followed by a stage of
catalytic cracking of the oligomers formed.Preliminary oligomerization,
in particular of a wide fraction of the charge, makes it possible to
optimize the yields, the conversion, and the selectivity for propylene,
relative to direct cracking. It also makes it possible for cracking to be
carried out in a fixed, moving, or fluidized bed, optionally with
co-production of oligomers for uses other than the production of
propylene.