Hydrogenation of unsaturated compounds present in hydrocarbons

Claim 1

THE HYDROGENATION OF BENZENE IN A STREAM OF HYDROCARBONS CONTAINING THE SAME, THE CONVERSION OF SULFURCONTAINING COMPOUNDS AND THE REMOVAL OF THE SULFUR COMPOUNDS FORMED, WHICH COMPRISES CONTACTING SAID STREAM OF HYDROCARBONS IN A FIRST ZONE WITH A FIXED-BED HYDROGENATION CATALYST, WHICH HAS BECOME SUBSTANTIALLY INACTIVATED FOR HYDROGENATION OF SAID STREAM BUT WHICH IS A CATALYST EFFECTIVE TO REMOVE SULFUR COMPOUNDS FROM SAID STREAM, AT A TEMPERATURE AT WHICH SAID INACTIVATED CATALYST WILL CONVERT SULFUR COMPOUNDS AND REMOVE THE SULFUR COMPOUNDS FORMED FROM SAID STREAM AND THEN IN A SECOND ZONE CONTACTING SAID STREAM, AFTER CONTACTING IT WITH SAID INACTIVATED CATALYST, WITH ANOTHER FIXED-BED HYDROGENATION CATALYST ACTIVE TO HYDROGENATE THE BENZENE IIN SAID STREAM AND THEREIN HYDROGENATING SAID BENZENE.