Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Patent
1994-12-16
1999-11-23
Griffin, Walter D.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
208113, 208 80, C10G 1105
Patent
active
RE0364037
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.
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Chevron Research and Technology Company
Griffin Walter D.
Squires Lawrence S.
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