Table 3 and Figs. 12–15 show that the main properties of the product fraction obtained in the hydrogenation step are quite different from the properties of the feedstock (Tables 1 and 2). During the hydrogenation, the triglyceride content is converted mainly to normal paraffins, a part of the aromatic content is saturated, and the sulphur, nitrogen and oxygen content of the feedstock are greatly decreased. Because of the increasing paraffin content, the cetane number of the product fractions is increased as well. The CFPP value of the products was quite high, because the heavy gas oil part of the feed (which has high CFPP value, too) and because of the increasing content of normal paraffins (originating from the triglyceride part).