Patent ID: 7262332

Claim:
A process for the catalytic conversion of a hydrocarbon charge comprising olefins, said process comprising the following sequence of stages: at least one Stage b) or b1) or b3) of oligomerization in which a catalytic oligomerization of said olefins is carried out in at least one reactor to obtain oligomers, said hydrocarbon charge comprising by weight at least 70% of C4+C5+C6 olefins, at least 10% of C 4 olefins and at least 10% of C 5 olefins, with a ratio R 2 of C 5 olefins to C 4 olefins higher than 0.5 and less than 2, and a ratio of R 3 of(C 4 +C 5 olefins) to C 6 olefins of greater than 10, a Stage d) catalytic cracking of a oligomerizate charge containing a proportion of at least said oligomers is carried out in a reactor different from the oligomerization reactor, to produce propylene.