Integrated FCC and aromatic recovery complex to boost BTX and light olefin production

A process for converting diesel to products comprising light olefins, benzene-toluene-xylenes (BTX), fluid catalytically cracked naphtha, pyrolysis gasoline, and pyrolysis fuel oil, said process comprising:

• introducing a diesel feedstream to a diesel hydrodesulfurization unit to produce a desulfurized diesel stream;
• introducing the desulfurized diesel stream to a fluid catalytic cracking (FCC) unit to produce the fluid catalytically cracked naphtha, a light gas stream, and a cycle oils stream;
• introducing a heavy naphtha stream to a naphtha hydrodesulfurization unit to produce a desulfurized naphtha stream;
• introducing the desulfurized naphtha stream to a naphtha splitter unit to produce a desulfurized heavy naphtha stream comprising C7-C11 hydrocarbons and a desulfurized light naphtha stream comprising C5-C6 hydrocarbons;
• passing the desulfurized heavy naphtha stream directly from the naphtha splitter unit to a catalytic reforming unit to produce a reformate stream;
• combining the reformate stream with the fluid catalytically cracked naphtha stream to produce a combined stream;
• introducing the combined stream to an aromatic recovery complex to produce the BTX and an aromatic bottoms stream;
• and
• introducing the desulfurized light naphtha stream and a paraffinic fraction of the light gas stream to a steam cracking unit to produce a light olefins stream, the pyrolysis gasoline, and the pyrolysis fuel oil,
• wherein:
• the FCC unit is operated at a residence time from 0.1 seconds to 30 seconds, and
• the FCC unit comprises a zeolite containing catalyst comprising from 5 wt. % to 15 wt. % of a catalyst additive to provide a higher concentration of propylene relative to the concentration of propylene provided in the absence of the catalyst additive.