Preparation of components for transportation fuels

A process for the production of refinery transportation fuel or blending components for refinery transportation fuel, which process comprises:

• hydrotreating a petroleum distillate consisting essentially of material boiling between about 50° C. and about 425° C. by a process which includes reacting the petroleum distillate with a source of hydrogen at hydrogenation conditions in the presence of a hydrogenation catalyst to assist by hydrogenation removal of sulfur and/or nitrogen from the hydrotreated petroleum distillate;
• fractionating the hydrotreated petroleum distillate by distillation to provide at least one low-boiling blending component consisting of a sulfur-lean, mono-aromatic-rich fraction, and a high-boiling oxidation feedstock consisting essentially of a sulfur-rich, mono-aromatic-lean fraction boiling between about 200° C. and about 425° C.;
• contacting the high-boiling oxidation feedstock with a soluble quaternary ammonium salt containing, sulfate, or bisulfate anion, and an immiscible aqueous phase comprising a source of hydrogen peroxide, and at least one member of the group consisting of phosphomolybdic acid and phosphotungstic acid, in a liquid reaction mixture under conditions suitable for reaction of one or more of the sulfur-containing and/or nitrogen-containing organic compounds and extraction of oxidation products from treated feedstock;
• separating from the reaction mixture an essentially organic liquid and at least a portion of the immiscible aqueous phase comprising oxidation product of one or more of the sulfur-containing and/or nitrogen-containing organic compounds;
• and
• treating at least a portion of the recovered organic liquid with a solid sorbent, an ion exchange resin, and/or a suitable immiscible liquid containing a solvent or a soluble basic chemical compound, to obtain a product containing less sulfur and less nitrogen than the oxidation feedstock.

A process for the production of refinery transportation fuel or blending components for refinery transportation fuel, which process comprises:

• hydrotreating a petroleum distillate consisting essentially of material boiling between about 50° C. and about 425° C. by a process which includes reacting the petroleum distillate with a source of hydrogen at hydrogenation conditions in the presence of a hydrogenation catalyst to assist by hydrogenation removal of sulfur and/or nitrogen from the hydrotreated petroleum distillate;
• fractionating the hydrotreated petroleum distillate by distillation to provide at least one low-boiling blending component consisting of a sulfur-lean, mono-aromatic-rich fraction, and a high-boiling oxidation feedstock consisting essentially of a sulfur-rich, mono-aromatic-lean fraction boiling between about 200° C. and about 425° C.;
• contacting the high-boiling oxidation feedstock with a soluble quaternary ammonium salt represented by formula
• CH3N(R)3X
• where X is a sulfate, or bisulfate anion, and the R's are the same or different hydrocarbon moieties of at least 4 to about 10 carbon atoms, and an immiscible aqueous phase comprising a source of hydrogen peroxide, and at least one member of the group consisting of phosphomolybdic acid and phosphotungstic acid, in a liquid reaction mixture under conditions suitable for reaction of one or more of the sulfur-containing and/or nitrogen-containing organic compounds and extraction of oxidation products from treated feedstock;
• separating from the reaction mixture an essentially organic liquid and at least a portion of the immiscible aqueous phase comprising oxidation products of one or more of the sulfur-containing and/or nitrogen-containing organic compounds;
• and
• treating at least a portion of the recovered organic liquid with a suitable immiscible aqueous liquid containing a solvent or a soluble basic chemical compounds to obtain a product containing less sulfur and less nitrogen than the oxidation feedstock.