METHOD FOR OBTAINING OIL PRODUCTS WITH LOW SULPHUR CONTENT BY DESULPHURIZATION OF EXTRACTS

摘要

Method for obtaining petroleum products of diesel improved quality type, from a cutting oil containing compounds organosulfur type dibenzothiophenes and / or its derivatives points initial and final boiling generally between 170 and 480 ° C, characterized by comprising at least two stages, one a) of liquid-liquid extraction in which cutting oil is contacted with a solvent, to obtain a freeness of diesel type with low content of sulfur compounds and aromatic and rich in solvent and a high content of sulfur and aromatic extract, and the other, b) oxidation of the sulfur compounds from the extract, to obtain, after separation, a hydrocarbon effluent type heavy fuel oil with low sulfur content and a residue comprising oxidised organosulfur compounds that.