Future gasoline specifications demand reduction in aromatics, benzene, sulfur, volatility, and boiling point. In response, refiners must modify their processing conditions, catalysts, and mode of operation of catalytic reformers and isomerization units. Diesel fuel is also facing tighter specifications for cetane number, aromatic content, sulfur, and color. To meet these specifications, operational modifications include use of higher activity catalysts, higher hydrotreating seventy, and two-stage processing. This paper reviews fuel legislation adopted recently worldwide, and refining technology solutions practiced and / or planned to meet the new specifications.
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Anabtawi et al. (1996) studied this question.
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