Production of aromatics-rich gasoline with low benzene content

Details Production of aromatics-rich gasoline with low benzene content Production of aromatics-rich gasoline with low benzene content

C - Chemistry, Metallurgy

07

C

260/684

C07C 2/66 (2006.01) C07C 15/02 (2006.01) C10G 63/00 (2006.01) C10L 1/06 (2006.01)

Patent

CA 2023449

F-5455 PRODUCTION OF AROMATICS-RICH GASOLINE WITH LOW BENZENE CONTENT Abstract A process for the production of high octane gasoline rich in aromatics but containing a relatively low concentration of benzene comprises the separation of C6 fraction of the gasoline feedstock into n-hexane and other C6 isomers. The n-hexane and C7+ streams are catalytically reformed to produce a reformate with a diminished yield of benzene. The reformate is separated and the C6- reformate fraction containing benzene is alkylated employing a zeolite catalyst such as ZSM-5 and preferably methanol or propylene as the alkylating agent. The alkylate comprises high octane C7+ alkylaromatics.

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