Experimental Procedures
Characterization of Crude Oil and Its Distillation Fractions
Crude oil was obtained from Czechowice-Dziedzice oil refinery, which is located in the Katowice Voivodship in southern Poland. Physico-chemical properties of obtained crude oil were as follows: density at 20°C – 0.726g/cm3; viscosity at 20°C – 0.7731cSt; viscosity at 30°C – 0.7047 cSt; water content – 0.1% (w/v); H2S content – < 0.3 mg/dm3; salt content – 1.1 mg/dm3; vapour pressure at 37.8°C – 55.4 kPa; vapour pressure at 50°C – 78.3 kPa; sulfur content – 0.24% (w/v). In Table 1 some characteristics.