A PROCESS FOR PRODUCTION OF BENZENE LEAN GASOLINE BY RECOVERY OF HIGH PURITY BENZENE FROM UNPROCESSED CRACKED GASOLINE FRACTION CONTAINING ORGANIC PEROXIDES

摘要

The present invention relates to a process for production of benzene lean gasoline by recovery of high purity benzene from a narrow boiling benzene concentrated unprocessed cracked gasoline fraction comprising benzene, close-boiling non-aromatic hydrocarbons like paraffins, iso-paraffins, olefins, di-olefins (including conjugated di-olefins), and naphthenes along with impurities like oxygenates, metals, chlorides, sulphur compounds, nitrogen compounds, and organic peroxides in an extractive distillation (ED) operation using an aromatic selective solvent in combination with a co-solvent. The present invention highlights the efficacy of an aromatic selective solvent along with co-solvent (solvent system) which remains stable in presence of the highly reactive species like conjugated di-olefins and organic peroxides during the ED operation for processing such a complex impurity laden feed.