Patent ID: 6238548
Filing Date: 2001-05-29
Classification: C10G

Abstract:
A process for the fluidized catalytic cracking (FCC) of an FCC feedstock and the production of a C.sub.8 aromatics, the process comprising:a) passing the FCC feedstock and regenerated catalyst particles to a reactor riser and transporting the catalyst and feedstock through the riser thereby converting the feedstock to a riser gaseous product stream and producing partially spent catalyst particles by the deposition of coke on the regenerated catalyst particles;b) discharging a mixture of partially spent catalyst particles and gaseous products from a discharge end of the riser directly into a separation zone and recovering the riser gaseous products from the riser in the separation zone;c) withdrawing the recovered riser gaseous products from the separation zone through a first gas outlet;d) separating at least a portion of the riser gaseous products into a secondary feed comprising a gasoline heart cut having at least 70 wt-% in a boiling point range of from 200 to 350.degree. F.;e) contacting the secondary feed and partially spent catalyst at a temperature of less than 950.degree. F., and at a catalyst-to-oil ratio of not greater than 8 to produce a recontacted gasoline stream; and,f) separating spent catalyst from the recontacted gasoline stream and contacting the spent catalyst that contacted the secondary feed with a regeneration gas in a regeneration zone to combust coke from the catalyst particles and produce regenerated catalyst particles for transfer to said reactor riser.