Process for improving the octane number of cracked gasolines
AssigneeMobil Oil Corporation
InventorRoger A. Morrison
Life of this patent
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Abstract
Olefin containing gasolines are upgraded to improve octane number with less than 5 wt.% yield loss by contacting such gasolines at elevated temperatures with acidic zeolites having alpha values between 5 and 100.
Claims15
A process for improving the octane value of an olefinic gasoline comprising aromatic, paraffinic and olefinic components, which method comprises contacting the olefinic gasoline with an acidic crystalline zeolite having an alpha value of 5 to 100 and a constraint index of 1 to 12 in the absence of hydrogen at a pressure of 0 to 50 psig and at a temperature of at least 700.degree. F. to effect a conversion of from 0.5 to 5 weight percent to C.sub.1 to C.sub.4 products, to effect an increase in the octane number of the gasoline.
Dependencies are inferred from the claim text.