September 2007

Special Report: Refining Developments

Fine-tuning coker operating conditions improves downstream process performance

Flexible design strategies increase refining profitability

Faegh, A. A., Sieli, G., Lummus Technology; Shimoda, S., ABB Lummus Global

T?o be profitable, refiners are challenged to convert heavier refinery streams into lighter products. In particular, delayed coking continues to be the preferred method for upgrading bottom-of-the-barrel refining streams. Delayed coking is a proven technology and is extremely flexible in processing a wide variety of crude oil slates. Refiners worldwide are considering grassroots coking capacity or revamping existing units. The project objectives are minimizing coke production and maximizing liquid product yields. Licensors of delayed-coking technology offer maximum liquid yield operations via ultra-low (or zero) recycle and/or low-pressure coking operations. However, these conditions may n

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