How much crude oil does it take to produce one ton of PX, and where does raffinate fit in?

How much crude oil does it take to produce one ton of PX, and where does raffinate fit in?
Raffinate sits at the tail end of the aromatics chain, so its economics are dictated by upstream PX and reformer runs. One operator reports reforming naphtha plus light oil feed of 150 t/h, supplemented with 20 t/h of pure C8 aromatics, yielding 85 t/h of paraxylene and 15 t/h of orthoxylene; when orthoxylene is routed to isomerization, PX output climbs above 90 t/h. C8 aromatics content in the feed matters most, followed by isomerization and disproportionation conversion, which runs around 25%. That same plant processed 9.3 million tons of crude last year, producing 1.2 million tons of reforming naphtha. Raffinate availability therefore tracks reformer and cracker utilization, not standalone demand.