September 2012

Special Report: Refining Developments

Increase FCC processing flexibility by improved catalyst recycling methods

The dynamic global refining market emphasizes the need for greater operating flexibility in the fluid catalytic cracking (FCC) unit.

Wolschlag, L. M., UOP LLC, a Honeywell Company; Lippmann, M., UOP LLC, a Honeywell Co.

The present refining market is highly dynamic, which emphasizes the need for greater operating flexibility in the fluid catalytic cracking (FCC) unit. Continued development in FCC technology is a high priority. For example, a new technology allows refiners to optimize catalyst circulation rates in the riser, independent of the unit heat balance. This capability enables improved conversion, product selectivity and emissions control while simultaneously reducing operating costs. This article will discuss how an advanced FCC catalyst recycling process technology increases the flexibility of the FCC unit to shift between different processing objectives while lowering costs and maximizing produ

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