C 6 recycle for propylene generation in a fluid catalytic...

Details C 6 recycle for propylene generation in a fluid catalytic... C 6 recycle for propylene generation in a fluid catalytic...

2008-09-16

2008-09-16

Caldarola, Glenn (Department: 1797)

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

C208S120010, C585S653000

Reexamination Certificate

active

10760800

ABSTRACT:
The present invention relates to a process for selectively producing C3olefins from a catalytically cracked or thermally cracked naphtha stream. The process is practiced by recycling a C6rich fraction of the catalytic naphtha product to the riser upstream the feed injection point, to a parallel riser, to the spent catalyst stripper, and/or to the reactor dilute phase immediately above the stripper.

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