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Abstract

Disclosed herein are processes for the production of hydrocarbon fuel products from C_2-5 alkanes. Methane is converted to ethylene in a methane thermal olefination reactor operating at a temperature of at least 900° C. and a pressure of at least 150 psig, and without a dehydrogenation catalyst or steam. C_2-5 alkanes are converted to olefins in a C_2-5 thermal olefination reactor operating at a temperature, pressure and space velocity to convert at least 80% of the alkanes to C_2-5 olefins. The ethylene and C_2-5 olefins are passed through an oligomerization reactor containing a zeolite catalyst and operating at a temperature, pressure and space velocity to crack, oligomerize and cyclize the olefins. In one aspect, methane in the effluent of the oligomerization reactor is recycled through the C_2-5 thermal olefination reactor. Methods for the thermal olefination of methane are also disclosed.

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First Claim