Gasoline octane enhancement in fluid catalytic cracking process with split feed injection to riser reactor
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United States of America
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Nov 23, 1999
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N/A
app pub date -
Dec 16, 1994
filing date -
Oct 30, 1985
priority date (Note) -
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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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