Conversion of Fischer-Tropsch heavy product to high quality jet fuel

Claim 1

A process of producing high quality gasoline and higher boiling products which comprises hydrotreating a wide boiling range aliphatic hydrocarbon fraction comprising oxygenates boiling in the range of about 350° to 850° F; separating the hydrotreated product to produce a 650° F plus fraction and a 650° F minus fraction, separating said 650° F minus fraction to produce a gasoline boiling fraction and higher boiling light oil fraction, separating said high boiling light oil fraction to produce a kerosine boiling fraction and a higher boiling distillate fraction having a low pour point. separately converting said kerosine boiling fraction and said 650° F plus fraction with a catalyst comprising a special zeolite component having a silica to alumina ratio of at least 12 and a constraint index of 1 to 12, at a temperature in the range of about 500° to 800° F, and at a space velocity of about 0.5 to 5 WHSV, to produce a conversion product of said zeolite catalyst, separating product obtained by converting said 650° F plus distillate fraction with said special zeolite catalyst to produce a C 4 minus gaseous product, a naphtha boiling range product, and a higher boiling distillate product suitable for producing jet fuel boiling range material and diesel fuel; and separating product obtained by converting said kerosine boiling fraction with said special zeolite catalyst to produce a C 4 minus gaseous product, a naphtha boiling range product and a kerosine boiling range product suitable for use as jet fuel.