Fluid catalytic cracking process for upgrading a gasoline-range

Details Fluid catalytic cracking process for upgrading a gasoline-range Fluid catalytic cracking process for upgrading a gasoline-range

1973-05-21

1976-04-06

Gantz, Delbert E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

208 74, 208 77, 208113, 252417, C10G 1102, B01J 920

Patent

active

039487571

ABSTRACT:
A fluid catalytic cracking process for simultaneously cracking a gas oil feed and upgrading a gasoline-range feed to produce high quality motor fuel. The gasoline-range feed is contacted with freshly regenerated catalyst in a relatively upstream portion of a short-time dilute-phase riser reaction zone maintained at first catalytic cracking conditions and the gas oil feed is contacted with used catalyst in a relatively downstream portion of the riser reaction zone which is maintained at second catalytic cracking conditions.
Particularly suited to efficiently cracking a gas oil feed and upgrading a wide variety of gasoline range-feed, including the more refractory of such feeds, is a fluid catalytic cracking process comprising a short-time dilute-phase riser reaction zone and a regeneration zone in which CO, produced by the oxidation of coke, is essentially completely oxidized to CO.sub.2 and in which at least part of the heat of combustion is transferred to regenerated catalyst.

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