FCC revamp improves operations at Australian refinery

The 1998 revamp of the No. 2 fluid catalytic cracking unit (FCCU) in the Caltex Refineries (NSW) Pty. Ltd. refinery at Kurnell, Australia, corrected problems that constrained the unit's operating flexibility.The design included a new air distributor, a new spent-catalyst distributor, and new stripper internals. In addition, an inertial separator installed during the riser revamp of 1989 was replaced with riser cyclones.The revamp resulted in a significant improvement in regenerator and stripper performance as well as improved yields and less catalyst deactivation. This article describes the nature of the problems addressed by the revamp, the features of the new equipment, and the early...

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