Exxonmobil Research and Engineering Company

Phillip A Deis

Robert F Tammera

Christopher Gordon Smalley

Alvin U Chen

Christopher S Gurciullo

Edward Nicholas Jones

Chris S Gurciullo

Edward N Jones

The present invention is an improved design and operation of a short contact time Fluid Catalytic Cracking (FCC) Reactor wherein the upper internal riser and a lower internal riser are in fluid connection with one another and provide an improved disengaging zone for entraining the vapors from the dilute phase area of the FCC reactor. Detailed preferred embodiments include improvements over the prior art to the internal central riser, riser termination apparatus, cyclone separators, and a coke mitigation baffle system, as well as associated improved fluid catalytic cracking processes utilizing the novel reactor design.

FCC reactor and riser design for short contact-time catalytic cracking of hydrocarbons

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Clifton, VA, United States of America

Phillip A Deis