Stone & Webster Process Technology, Inc.

Technip Process Technology, Inc.

T.en Process Technology, Inc.

Harvey McQuiston

Eusebius Anku Gbordzoe

Chris Robert Santner

Raj Kanwar Singh

Dilip Dharia

Eusebius Gbordzoe

A method and system for increasing olefin production and quality from a hydrocarbon feed comprising a fully integrated multi-stage catalyst regeneration zones with multi-stage reaction zones in series and/or parallel. The multi-stage regeneration with at least one partial and one full burn zone provides an independent control to achieve the lowest possible regenerated catalyst temperature, resulting in highest possible catalyst to oil ratio required to maximize olefins yields through increased catalytic cracking in a multi stage FCC riser/risers.

Maximum olefins production utilizing multi-stage catalyst reaction and regeneration

An improved spent catalyst regenerator which contains sub-troughs branching off from the main trough, distribution troughs which extend outward from the sides of the main trough and the sub-troughs, and downflow tubes extending downward from the bottom of the main trough and sub-troughs.

Bathtub-type spent catalyst distributor for effective counter-current regeneration in fluid catalytic cracking units

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Katy, TX, United States of America

Harvey McQuiston