Producing C6-C8 aromatics from FCC heavy naphtha

Abstract

A method of forming C6-C8 aromatics may include selectively dealkylating a Fluid Catalytic Cracking (FCC) heavy cut naphtha that has at least C9+ aromatics to selectively crack C2+ alkyl chains from the C9+ aromatics, thereby forming the C6-C8 aromatics. The selectively de-alkylated heavy cut naphtha is then combined with a FCC middle cut naphtha, and aromatics including the C6-C8 aromatics are separated from the combined stream. A system for forming C6-C8 aromatics may include a fluid catalytic cracking unit for producing a FCC heavy cut naphtha comprising at least C9+ aromatics; a de-alkylation reactor for selectively cracking C2+ alkyl chains from the C9+ aromatics, thereby forming the C6-C8 aromatics; and an aromatic extraction unit for extracting at least a portion of the C6-C8 aromatics.

Dependencies are inferred from the claim text.