Method of desulphurising a mixture of hydrocarbons

Abstract

Process for the desulphurization of a mixture of hydrocarbons comprising sulphur compounds, comprising a stage of oxidation by means of an oxidizing agent, in order to oxidize the sulphur compounds, followed by a stage of removal of the oxidized sulphur compounds by adsorption on an adsorbent solid, in which the adsorbent solid comprises at least 60% by weight of amorphous silica/alumina.

1 . A process for the desulphurization of a mixture of hydrocarbons comprising sulphur compounds, comprising a stage of oxidation by means of an oxidizing agent, in order to oxidize the sulphur compounds, followed by a stage of removal of the oxidized sulphur compounds by adsorption on an adsorbent solid, wherein the adsorbent solid comprises at least 60% by weight of amorphous silica/alumina.  
     
     
         2 . The process according to  claim 1 , wherein the mixture of hydrocarbons before oxidation comprises aromatic hydrocarbons in an amount of less than or equal to 80% by weight.  
     
     
         3 . The process according to  claim 1 , wherein the sulphur content of the mixture of hydrocarbons before adsorption is less than or equal to 200 ppm  
     
     
         4 . Process The process according to  claim 1 , wherein the oxidizing agent comprises hydrogen peroxide.  
     
     
         5 . The process according to  claim 1 , wherein the alumina content of the silica/alumina is less than or equal to 50% by weight (with respect to the total weight of the dry adsorbent solid).  
     
     
         6 . The process according to  claim 1 , wherein the adsorbent solid is devoid of any solid of crystalline structure.  
     
     
         7 . The process according to  claim 1 , wherein the adsorbent solid comprises at least one solid of crystalline structure in an amount of less than or equal to 40% by weight (with respect to the total weight of the dry adsorbent solid).  
     
     
         8 . The process according to  claim 7 , wherein the solid of crystalline structure is a zeolite X or Y.  
     
     
         9 . The process according to  claim 1 , wherein the adsorbent solid exhibits a specific surface of greater than or equal to 400 m 2 /g and less than or equal to 1000 m 2 /g.  
     
     
         10 . The process according to  claim 1 , wherein the adsorbent solid comprises mesopores.