Process for the removal of contaminant compounds containing one or more heteroatoms of sulfur, nitrogen and/or oxygen from hydrocarbon streams

摘要

Process for the removal of contaminant compounds containing one or more heteroatoms of sulfur, nitrogen and/or oxygen from hydrocarbon streams characterized in that it comprises:PP an adsorption step in which said compounds are adsorbed by means of an adsorber essentially consisting of silica gel, possibly modified with one or more metals selected from the elements of groups IVb, Vb, VIb, VIII, Ib, IIb or from tin, lead or bismuth, carried out at a temperature of between 0° and 150° C. and at a pressure of between 1 and 20 atm; PPan optional washing step with polar solvents or hydrocarbons;PPand a regeneration step for removing the substances adsorbed by means of thermal treatment in a flow of inert gas carried out at a temperature of between 100° and 200° C.