PRODUCTION OF BENZENE BY HYDROGENATION DEALKYLATING HYDROCARBON FRACTION CONTAINING ALKYLAROMATIC HYDROCARBONS, OLEFINIC HYDROCARBONS AND SULFUR COMPOUNDS

摘要

A fraction of hydrocarbons containing toluene and or of the xylene, as well as mono - olefins and of the compounds of the sulphur is subjected successively to a hydrodesulphurization, hydrodéalkylation and a hydrogenation. The fraction toluene and or xylene is not converted recycled. There is obtained of the benzene high — purity with a yield high. The costs of implementing the method is considerably reduced by the suspension of any fractionation between the stages of the process.