Abstract
This study explores the etherification of the olefins in the Fluid Catalytic Cracking (FCC) gasoline, without previous separation of isoamylenes fraction. The bench- scale experiment demonstrated that etherification performed with Purolite CT-275, a macroporous polymeric ion-exchange resin, and different alcohols (methanol, bioethanol, isopropanol and 1-butanol) produces significant conversion of olefins, even for the heavier C6-C9, so that overall conversion of olefins reaches 70% in reaction with ethanol and 83% with isopropanol. As a result, the Motor Octane Number of the gasoline increases by up to two valuable units. The optimization of the reactive distillation parameters was performed by simulation in CHEMCAD 8 and a process flow was suggested for the etherification sequence, in the FCC unit.
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