Abstract: There is provided a catalytic cracking operation featuring a single riser reaction zone having a lower and an upper section wherein a variety of hydrocarbon conversion reactions takes place, a stripping zone in which entrained hydrocarbon material is removed from catalyst and a regeneration zine in which spent cracking catalyst is regnerated, which comprises:(a) thermally cracking a C.sub.
Type:
Grant
Filed:
September 3, 1986
Date of Patent:
May 2, 1989
Assignee:
Mobil Coil Corporation
Inventors:
Joseph A. Herbst, Hartley Owen, Paul H. Schipper