September 2010

Special Report: Refining Developments

Upgrade FCC performance—Part 2

New ceramic feed distributor offers ultimate erosion protection

Couch, K. A., UOP LLC; Wolschlag, L. M., UOP LLC, a Honeywell Company

A new catalyst regenerator technology was developed to improve Δcoke operations. Since improved equipment technology and catalyst offerings have resulted in progressive decreases in Δcoke, refiners have continued to debottleneck unit constraints within the capacity of existing major equipment. Usually with the constraint of not replacing main vessels or large rotating equipment, i.e., main air blowers (MABs), wet gas compressors (WGCs), regenerator shells, reactor shells, stripper shells and catalyst circulation standpipes. Maintaining this philosophy through several technology upgrades can result in several operational and reliability concerns:• Excessive catalyst loadi

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