Abstract
The catalytic cracking behavior of compound types in the >650 °F resid from a Wilmington, CA, 14.2° API crude was investigated. Liquid chromatography (LC) was used to separate the resid into eight fractions. These fractions were used as feedstocks for a bench scale fluidized catalytic cracking (FCC) unit. Gasoline was produced almost exclusively from neutral (65% of whole resid) components. Acidic and basic types were partially converted to coke plus small amounts of C 1 and C 2 gases, with the balance primarily carrying over as heavy liquid products. Gasoline composition depended on the type and quantity of acid/base compounds present in the feed because both acidic and basic compounds inhibited catalytic reactions (β-scission, hydrogen transfer, etc.) to varying degrees.
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