Case history: New developments with lower catalyst-to-feed ratios for FCC units
A study was conducted using a series of FCC catalysts that included reduced rare-earth content and increased zeolite Y quantity systems. The goal was to raise gasoline yield along with greater yields of olefins.
At Gazpromnefts Moscow refinery, the fluid catalytic
cracking (FCC) unit had the potential to increase throughput
with a catalyst-to-feed mass ratio of 4. A study was
conducted using a series of FCC catalysts that included reduced
rare-earth (RE) content and increased zeolite Y quantity
systems. The goal of the catalyst study was to increase
gasoline yield, along with greater yields of olefins
(C3 and C4) from the FCC unit, as the
catalyst-to-feed mass ratio was steadily reduced from 5.7 to
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