Oxidative desulfurization and denitrogenation of petroleum oils

Details Oxidative desulfurization and denitrogenation of petroleum oils Oxidative desulfurization and denitrogenation of petroleum oils

2006-12-21

2010-02-23

Bullock, In Suk (Department: 1797)

Mineral oils: processes and products

Refining

Sulfur removal

C208S219000, C208S237000, C208S240000, C208S25400R, C549S528000, C562S005000

Reexamination Certificate

active

07666297

ABSTRACT:
An improved oxidative process that employ a robust, non-aqueous, and oil-soluble organic peroxide oxidant for effective desulfurization and denitrogenation of hydrocarbons including petroleum fuels, hydrotreated vacuum gas oil (VGO), non-hydrotreated VGO, petroleum crude oil, synthetic crude oil from oil sand, and residual oil. Even at low concentrations and without the assistance of catalysts, the non-aqueous organic peroxide oxidant is extremely active and fast in oxidizing the sulfur and nitrogen compounds in the hydrocarbon feedstocks. Furthermore, the process generates a valuable organic acid by-product that is also used internally as the extractive solvent for effective removal of the oxidized sulfur and nitrogen from the hydrocarbons without the need of a final adsorption step. Novel process steps are also disclosed to substantially prevent yield loss in the oxidative process.

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