Processing for eliminating sulfur-containing compounds and nitrogen-containing compounds from hydrocarbon

摘要

A process for desulfurization and, if necessary, for denitrification of hydrocarbon fractions is characterized in that: said hydrocarbon mixture is brought into contact with a non-aqueous ionic liquid of general formula Q<+>A<-> that contains at least one alkylating agent, making it possible to form ionic sulfur-containing derivatives (and, if necessary, nitrogen-containing derivatives) that have a preferred solubility in the ionic liquid; and said ionic liquid is separated from the hydrocarbon mixture that is low in sulfur and nitrogen by decanting.