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AssigneesSaudi Arabian Oil Company, King Fahd University of Petroleum and Minerals
InventorsChristopher F. Dean, Musaed Salem Musaed Al-Ghrami Al-Ghamdi, Khurshid K. Alam, Mohammed Abdul Bari Siddiqui, Shakeel Ahmed
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The present invention concerns a novel additive composition for reducing sulfur content of a catalytically cracked gasoline fraction. This additive composition comprises a support consisting of porous clay into which a first metal from group IVB is incorporated and a second metal from group IIB is impregnated. Preferably, the first incorporated metal is zirconium and the second impregnated metal is zinc. The sulfur reduction additive is used in combination with a conventional cracking catalyst in a fluidized catalytic cracking process to convert hydrocarbon feed stocks into gasoline having comparatively lower sulfur content and other liquid products.
A process for reducing the sulfur content of a gasoline fraction obtained from an FCC cracking process which comprises contacting a hydrocarbon feedstock with a conventional FCC cracking catalyst in combination with separate particles of sulfur reduction additive composition, said additive composition comprising a porous montmorillonite clay support material into the pores of which a zirconium component has been incorporated to thereby increase the surface area of the support material and the surface of which support material is subsequently impregnated with a Lewis acid compound selected from Group IIB of the Periodic Table.
Dependencies are inferred from the claim text.