The review and analysis of oxidation processes necessary for quality improvement of oil fractions boiling to 623 K have been carried out. Different oxidative technologies for crude oil processing have been examined. Their advantages and disadvantages have been shown.
The effect of temperature and water:raw material ratio on the oxidative desulphurization of straight-run diesel fraction 553–623 K has been examined. The optimum values of temperature and diesel fuel:water ratio for the fuel containing 0.87 wt % of sulphuric compounds have been determined.
The article deals with desulphurization of straight-run diesel fractions by selective oxidation of sulphuric compounds with their further separation. The possibility of commercial diesel fuels production with sulphur content up to 0.2 mas % from straight-run fractions with sulphur content of 0.25–0.67 mas % has been shown.