April 2011

Clean Fuels

Meeting diesel specifications at sustained production

New approach rethinks operations of crude and vacuum distillation units to recover more distillate

Singh, D., Shedded Uhde Pty Ltd.

Refiners will face a tough challenge over the coming years to cope with growing diesel demand at the expense of gasoline, while conforming to the progressively tighter diesel fuel specifications to meet environmental regulations. The more stringent specifications are likely to hurt the overall diesel yield due to possible rejection of heavy ends from the present product spread. Future diesel will have a narrower density band, lower cloud point, lower T95 (D86) specification and less sulfur. Therefore, aligning the existing refineries with progressively tighter diesel specifications at a sustained diesel yield will be quite challenging. Some recent compliance project experience is reported h

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