Process for the catalytic oxidation of sulfur, nitrogen and unsaturated compounds from hydrocarbon streams.

摘要

A process for the catalytic oxidation and extraction or removal of sulfur compounds, nitrogen and unsaturated hydrocarbon fossil streams contaminated with said compounds, the process comprising the following steps: a) providing an iron oxide pulverized raw; b) providing at least one acid; c) providing at least one peroxide; d) oxidizing unsaturated compounds as well as sulfur contaminants and nitrogen by mixing, at atmospheric pressure and a temperature equal to or higher than room temperature, with agitation, said acid and said hydrocarbon stream contaminated with sulfur compounds, nitrogen and unsaturated and said peroxide to obtain a peracid, the molar amount of peroxide and acid relative to the sum of contents of nitrogen and sulfur present in the hydrocarbon stream at least 3, 0, at pH 2, 0 and 6, 0, during the period required to obtain a hydrocarbon stream where sulfur and nitrogen contaminants have been partially oxidized insaturadosde; e) further oxidizing said unsaturated ao compounds and sulfur contaminants and nitrogen in the presence of oxidizing hydroxyl radicals generated by adding, at atmospheric pressure and a temperature greater than ambient temperature, giving rise to the temperature higher than the ambient temperature by itself process, with stirring, a catalytic amount of said pulverized iron oxide to obtain a slurry of iron oxide, hydrocarbon stream and unsaturated compounds, sulfur and nitrogen oxidized, reaction conditions being maintained for 1-2 hours and at a pH acid from 2 0 to 6, 0; f) after the end of the reaction, filter the reaction medium containing an aqueous phase and an oily hydrocarbon phase, and separating the catalyst from spent iron oxide; g) decanting to separate the aqueous phase rich in organic compounds.