Chinese FCCU revamp improves performance

Sinopec revamped its residue fluid catalytic cracking unit (RFCCU) in its Luoyang petrochemical complex (LPC) in April 2000 to enable it to process residue with more contaminants. The new design incorporated several UOP features: a VSS (vortex separation system), a multiple-stage stripper, and an Optimix spray nozzle. Click here to enlarge imageFig. 1 illustrates the changes made during the revamp.This RFCCU was built in 1984. The economic performance of the unit suffered in 2000, however, because of increasing sulfur and metal contaminants the refinery's crude feed.Before the revamp, Sinopec identified several problems with the unit. The T model riser terminator was not very efficie...

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