Process for the treatment of olefinic gasoline
AssigneeMobil Oil Corporation
InventorsWilliam E. Garwood, Wooyoung Lee
Life of this patent
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Abstract
A process is disclosed for the treatment of highly olefinic gasoline containing at least about 50% by weight of olefins by contacting said olefinic gasoline with a special group of acidic crystalline aluminosilicate zeolites, such as those of the ZSM-5 type in order to enhance the gum stability of said gasoline and produce products comprising both gasoline and fuel oil.
Claims16
In the process of contacting olefinic gasoline with an acidic crystalline aluminosilicate zeolite having a pore diameter greater than about 5 Angstroms, a silica-to-alumina ratio of at least 12, and a constraint index within the range of 1-12 at elevated temperatures, the improvement which comprises utilizing an olefinic gasoline having an olefin content of at least 50 weight percent and (a) carrying out said contact at a temperature of from about 350.degree.-600.degree. F., a pressure of from about 100-1,000 psig and at a space velocity ranging from about 0.2 to 10 LHSV;
- (b) said temperature, space velocity and pressure being chosen so as to produce no more than 5 weight percent of aromatics, and (c) obtaining a product comprising both fuel oil and gasoline having enhanced gum stability.
Dependencies are inferred from the claim text.