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AssigneeInstitut Francais du Petrole
InventorsThierry Chapus, Blaise Didillon, Christian Marcilly, Charles Cameron
Estimating the term…
A process and apparatus for treating raw gasoline from catalytic cracking to obtain gasoline with the qualities required for use as motor fuel comprises selective hydrogenation followed by stabilization and optional cooling of the effluent, then sweetening followed by degassing to obtain a dedienized, stabilized and sweetened gasoline. The hydrogenation catalyst preferably comprises 0.1-1% of palladium deposited on a support, sweetening is preferably carried out on a solid catalyst containing an aluminosilicate of an alkali metal (for example sodalite), a metal chelate and activated charcoal. The product from this process can be placed directly in the gasoline pool or, advantageously, fractionated to obtain one or more cuts which can be used as feeds for etherification.
A process for the purification of a catalytic cracking gasoline cut containing dienic impurities, said process comprising subjecting the gasoline cut to a selective hydrogenation step, stabilizing the resultant hydrogenated effluents, subjecting the resultant stabilized cut to oxidative sweetening to convert the mercaptans to disulfides and degassing the resultant stabilized gasoline to provide a dedienized, stabilized and sweetened gasoline.
Dependencies are inferred from the claim text.