Gasoline octane enhancement in fluid catalytic cracking process

Details Gasoline octane enhancement in fluid catalytic cracking process Gasoline octane enhancement in fluid catalytic cracking process

1987-06-26

1989-09-26

Sneed, H. M. S.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208 80, 208113, C10G 1105

Patent

active

048698075

ABSTRACT:
A fluid catalytic cracking unit equipped with multiple feed injection points along the length of the riser is operated such that portions of the same fresh feed are charged to different feed injection points. Preferably, the hydrocarbon fresh feed can be split into two or more non-distinct fractions, with one fraction charged to the bottom injection point along the length of the riser reactor, and the remaining fractions charged to injection points progressively higher up along the length of the riser reactor. Unconverted slurry oil boiling above 650.degree. F. can be recycled to one or more of the various injection points along the length of the riser.

REFERENCES:
patent: 3617497 (1971-11-01), Bryson
patent: 4405445 (1983-09-01), Kovach et al.

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