Method of separating components of an organic mixture

Claim 1

THE METHOD OF SEPARATING PARAFFINIC AND AROMATIC COMPONENTS OF A LUBRICATING OIL STOCK WHICH COMPRISES MIXING A PARAFFINIC HYDROCARBON DILUENT AND SILICA GEL ADSORBENT TO FORM A SLURRY, FORMING SAID SLURRY INTO A THIN LAYER, MIXING AN ADDITIONAL QUANTITY OF PARAFFINIC HYDROCARBON DILUENT AND SILICA GEL ADSORBENT WITH THE LUBRICATING OIL STOCK TO BE TREATED TO FORM A SECOND SLURRY, FORMING SAID SECOND. SLURRY INTO A THIN LAYER SUPERIMPOSED UPON SAID FIRST-MENTIONED THIN LAYER, MOVING THE SUPERPOSED LAYERS SUCCESSIVELY THROUGH A FIRST TREATING ZONE AND A SECOND TREATING ZONE, SPRAYING PARAFFINIC HYDROCARBON DILUENT ON THE UPPER LAYER IN SAID FIRST TREATING ZONE TO REMOVE UNADSORBED MATERIALS THEREFROM AND TO CAUSE SELECTIVE ADSORPTION OF THE AROMATIC COMPONETS OF SAID LUBRICATING OIL STOCK IN THE LOWER LAYER AND SPRAYING AN AROMATIC DESORBENT ON TOP OF SAID UPPER LAYER IN SAID SECOND TREATING ZONE TO REMOVE ADSORBED AROMATIC HYDROCARBONS FROM BOTH LAYERS.