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Hunt recently installed two new units at its Tuscaloosa, Ala. facility using the UOP CCR Platforming™ Process and the UOP Unicracking™ Process.
(A Barrel Full, Tuscaloosa Refinery, page revision: 7, last edited: 19 Jun 2012).

CCR Platformer / Isomerization

The final step in refining gasoline is catalytic reforming and isomerization. The purpose of these processes is to enhance the fuel grade of the gasoline product.
This is accomplished by separating the naphtha feed into intermediate and heavy streams. The intermediate stream is fed to the isomerization unit for benzene saturation and octane upgrade. The heavy naphtha is catalytically reacted and separated into gasoline products. This process enhances the fuel grade by raising the octane number.
In order to have a constant catalytic reformation, a catalyst must be readily available. The Continuous Catalytic Regenerator Platformer achieves this through a complex, multistep process. The first step of this technique is to remove volatile hydrocarbons with heated hydrogen. The next step is to burn off carbon from the catalyst surface. The final step is restoring the surface area by routing the catalyst to a zone of high oxygen concentration within a chloride environment. The regenerated catalyst is then transferred back to the reaction stage of the process.