REFINERY REVAMP-Conclusion: Crude unit revamp allows refiner to process more low-cost feeds

A revamp of the crude unit in ConocoPhillips’ Ponca City, Okla., refinery has allowed the refiner to process a lower-cost slate and increased overall refinery profitability.This article, the second of two, discusses the overhead vacuum system design, crude preheat train modifications, execution of the construction and turnaround phases, and results due to the revamp.The first article (OGJ, Aug. 21, 2006, p. 49) discussed the project’s front-end processing, vacuum tower design, and vacuum heater design.The Ponca City revamp has met or exceeded ConocoPhillips’ performance expectations. The refiner can process greater amounts of less-expensive crudes, can fully charge a pre...

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