Split feed injection fluid catalytic cracking process

Details Split feed injection fluid catalytic cracking process Split feed injection fluid catalytic cracking process

1996-04-01

1997-04-01

Myers, Helane E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208 49, 208 78, 208 80, 208113, C10G 1105

Patent

active

056162375

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 with the temperature of the upper injection feed fractions being different from that of the lowest injection point fraction prior to entry into the FCC riser reactor. Hydrocarbon products from the cracking process can be recycled to one or more of the various injection points along the length of the riser.

REFERENCES:
patent: 4584090 (1986-04-01), Farnsworth
patent: 4869807 (1989-09-01), Krishna et al.

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