September 2003

Special Report: Refining Developments

Optimize coker operations

Refiners can update coking units via two methods – recycle or zero-recycle operations. Depending on the capability of downstream units either option can be used as part of clean-fuels program

Elliott, J. D., Foster Wheeler USA Corp.

Delayed cokers are the most effective processes to decarbonize and demetallize heavy petroleum residues. This refining process can provide 20% to 40% of the downstream hydroprocessing feedstocks. Optimizing coker operation is crucial to any clean fuels program. Effective use of coker recycle can improve unit yields and the quality of coker-liquid products. Zero-recycle and ultra-low recycle operations for fuel-grade coking can be effectively to optimize coker integration in a clean fuels program. Upgrading bottoms products. Delayed coker modifications are commonly implemented in clean fuel programs along with modi

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