Fuel fractions from the pyrolysis of polyolefins

Petrol and fuel oil fractions obtained from thermal decomposition of polyolefins - petroleum and oil originating mixture were analyzed. It was found that fraction 200 divided by 360 degrees C consists of mainly n-paraffins which was confirmed by high value of cetane number. Unfortunately, neither this fraction nor petrol fraction fulfil requirements of sulphur content. Hydrorefining carried out by coke gas under pressure of 3 MPa was ineffective. Fuel fractions. (< 360 degrees C) constitute about 45% m/m of analyzed pyrolysis product. There were carried out introductory studies of hydrocraking in order to increase their contents, but these studies didn't give expected result. There were observed no changes in weight content of components boiling over 360 degrees C, but one can remark increase of amount of fraction boiling under 200 degrees C. The best result in that studies was obtained by using process pressure 8 MPa.