Patent ID: 7491316
Filing Date: 2009-02-17
Classification: C10G

Abstract:
1. A process for desulfurizing and denitrogenating a distillate feedstock to produce a refinery transportation fuel or blending components for a refinery transportation fuel wherein the feedstock contains sulfur-containing and nitrogen-containing organic impurities which process comprises: (a) contacting the feedstock with an oxidizing gas consisting of the oxygen in oxygen-depleted air having an oxygen content of at least 0.01 percent by volume in an oxidation zone at oxidation conditions in the presence of a heterogeneous oxidation catalyst comprising a zeolitic material TIQ6 to oxidize a portion of the sulfur-containing organic impurities with oxygen to form directly sulfur dioxide and sulfur trioxide and to convert another portion of the sulfur-containing and nitrogen-containing organic impurities to oxidized sulfur-containing and nitrogen-containing organic compounds, and (b) separating a portion of the oxidized sulfur-containing and nitrogen-containing organic compounds from the oxidation zone effluent to recover a distillate effluent having a TAN number less that 0.5 mg KOH and a reduced amount of oxidized sulfur-containing and nitrogen-containing organic impurities.