I was part of the early design team for new refineries going into Brazil. They are designed to produce diesel and natural gas as their only products. Lighter and heavier products were consumed as fuel or continued to be cracked until they were part of those two streams.
Also electricity was to be produced in excess of the refineries’ need and sent to their grid. Four of these are being built. The units are designed to be “modular” so that the initial to final size stepped up usually by thirds.
Output of only fuels and electricity?
No lubricants? No plastics? No pesticides? No paving? No pharmaceuticals? No pigments???
Hell, that’s perfect.
Let’s build about two dozen of them.