车用燃料油氧化脱硫技术进展

The technologies of desulfurization for vehicle fuel oil including hydrogen desulfurization, catalytic cracking desulfurization, adsorption desulfurization and oxidation desulfurization etc were reviewed. The oxidation desulfurization technique, involving oxidation and separation of sulfur-containing compounds, and its mechanism were especially presented. Due to the extra five 3d orbits of sulfur atom, it is easier for the sulfur-containing compounds to be oxidized than hydrocarbons. Sulfone could be obtained and separated from hydrocarbons through oxidation of the sulfur-containing compounds because of the improved polarity. Compared with other technologies, the oxidation desulfurization technique is predominant in investment, operation and hydrogen consumption. It meets the need of deep desulfurization, especially for dibenzothiophenes (DBTs) which are difficult to be treated by hydrogen desulfurization method.