July 2015

Special Report: Refinery of the Future

European refiner revamps delayed coker to meet Euro 5 specifications

This case study chronicles how the European refiner Rompetrol Rafinare SA upgraded its Petromidia refinery in Navodari, Romania, includingthe revamping the delayed coker unit (DCU) to address existing operating problems.

Bolohan, C., Manafu, L., Rompetrol Rafinare S.A.; Ward, J. D., Bechtel Hydrocarbon Technology Solutions, Inc.

In this case history, the European refiner Rompetrol Rafinare SA upgraded its Petromidia refinery in Navodari, Romania. The project included revamping the delayed coker unit (DCU) to address existing operating problems.1 Rompetrol’s coker experienced excessive daily air emissions, contaminated water disposal issues and safety concerns related to the coke drum top head area. Problems were largely caused by the existing open blowdown system, manual coke drum isolation valves and ineffective control/safety interlock systems. A new closed blowdown system (CBS) was installed and the coke drum isolation valves were replaced with modern, motor-operated valves (MOVs) that were part of an inter

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