Process for the production of benzene, cyclohexane and motor fuel from a C6 hydrocarbon stream

Claim 1

A process for producing benzene, cyclohexane and an isohexane concentrate which comprises the steps of: a. processing a hydrocarbon-containing feedstock to obtain a first stream consisting essentially of hydrocarbons having six carbon atoms; b. fractionating said first stream to obtain a second stream comprising hydrocarbons having a boiling point in the isohexanes range and a third stream comprising hydrocarbons having a boiling point above the isohexanes range; c. fractionating said third stream to obtain a fourth stream comprising hydrocarbons boiling in the n-hexane range and a fifth stream comprising hydrocarbons having a boiling point above the n-hexane range; d. combining said second stream and said fifth stream to obtain a sixth stream; e. hydrogenating said sixth stream to obtain a seventh stream comprising saturated hydrocarbons having six carbon atoms; f. isomerizing said seventh stream to obtain an eighth stream comprising isohexanes, cyclohexane and n-hexane; g. fractionating said eighth stream to obtain an isohexane concentrate and a ninth stream comprising cyclohexane, isohexane and n-hexane; h. withdrawing said isohexane concentrate as a first product of the process; i. recovering from said ninth stream a cyclohexane concentrate as a second product of the process; j. reforming said fourth stream to obtain a tenth reformate stream; and k. recovering from said reformate stream a benzene concentrate as a third product of the process.