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

1975-12-03

1977-09-27

Levine, Herbert

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural parallel stages of chemical conversion

208153, 208156, 208159, 208164, C10G 3702

Patent

active

040510131

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.

REFERENCES:
patent: 3706654 (1972-12-01), Bryson et al.
patent: 3844973 (1974-10-01), Stine
patent: 3926778 (1975-12-01), Owen et al.
patent: 3928172 (1975-12-01), Davis et al.
patent: 3948757 (1976-04-01), Strother

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