February 2012

Special Report: Clean Fuels

Improve diesel quality through advanced hydroprocessing

New upgrading technologies help meet fuel quality specifications

Peng, C., Huang, X., Liu, T., Zeng, R., Liu, J., Guan, M., Fushun Research Institute of Petroleum and Petrochemicals

Fluid catalytic cracking (FCC) is an essential technology for converting heavy oil to light oil in refineries around the world. Around 85% of the FCC, or catalytic, diesel produced by Chinese oil refineries is used in the production of transportation diesel. Catalytic diesel is also used in fuel oil blending and as heating oil in other countries.1 Recently, heavy, low-quality FCC feedstock has led to deterioration in the quality of FCC diesel in China. Moreover, many companies have revamped their FCC units or increased operational severity to improve gasoline quality and to produce more propylene. All of these efforts are contributing to a decline in diesel quality. The aromatic content

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