## 3 Results  
During the tests, the mass of samples used and products obtained, temperature and process duration were measured. After the test on the laboratory stand, the phenomenon of delamination was observed in the collected oil fraction. After 24 h, the difference between the clear and turbid fractions became evident. Similar phenomena have been described in [15]. The fractions were separated using a sedimentation funnel. The amount of gases was determined from the balance equations. Moreover, flammable and non-flammable parts, volatile parts, density, humidity, carbon, chlorine, sulfur and nitrogen content were \begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Type of** & **Input** & **Char** & **Clear** & **Pyolytic Oil** & **Pyolytic Oil** & **Pyolytic Gas** \\
**Plastic** & **[g]** & **[g]** & **[g]** & **[g]** & **[g]** & **[g]** \\ \hline Soft foils & 746 & 140 & 328.9 & 144.5 & 132.6 \\ Mixed & 748 & 160 & 116.7 & 207.2 & 246.1 \\ materials & & & & & \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Masses of substrates and products. determined, combustion heat was measured and calorific value was calculated. The substrates and products of the process were analyzed in accordance with the applicable standards. In connection with the adopted topic, the publication presents and discusses results concerning sulfur and nitrogen content. In the case of these tests, the pyrolysis gas stream was not measured directly. Its composition was also not measured. The pyrolysis gas was discharged to the atmosphere via an off-gas cleaning system. In the first stage of research, the mass balance for the substrate and process products (Table 1) was determined. The results of mass balance calculations are presented in Table 2.  
For contaminated foils, the weight distribution of the obtained products is as follows: pyrolytic gas constitutes 17.7% of the charge, char 18.8%, pyrolytic oil 63.5%. After separation of the oil fraction, nearly 70% of the clear substance and 30% of the turbid fraction were obtained from it (which gives 44.1% and 19.4%, respectively, of the foil charge). For plastics obtained from the recycling process of end-of-life vehicles, the weight distribution of the obtained products is as follows: pyrolytic gas constitutes 35.3% of the charge, char 21.4%, pyrolytic oil 43.3%. After separation of the oil fraction, 36% of the clear substance and 64% of the turbid fraction were obtained from it (which gives 15.6% and 27.7%, respectively, of the plastic charge). Analyzing the results obtained, it can be concluded that for both samples under consideration the amount of char obtained is at a similar level--about 20%. Differences occur in the case of gas and pyrolytic oil. From processing of the foil, a larger amount of oil was obtained (by 20%); additionally, a larger part of it was clear. In the next step, a number of planned tests and markings on the products obtained were carried out. The percentage of total sulfur and nitrogen was determined in batch samples and in the obtained char and pyrolytic oil (separately for the clear and turbid fraction). In order to determine the sulfur and nitrogen content in the pyrolytic gas, appropriate balance calculations were made. The results of testing the pyrolysis process for sulfur content are presented in Table 3. The results of the sulfur migration calculations are presented in Table 4. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Type of** & **Input** & **Char** & **Clear** & **Pyolytic Oil** & **Pyolytic Gas** \\
**Plastic** & **[\%]** & **[\%]** & **[\%]** & **[\%]** & **[\%]** & **[\%]** \\ \hline Soft foils & 100.0 & 18.8 & 44.1 & 19.4 & 17.7 \\ Mixed & 100.0 & 21.4 & 15.6 & 27.7 & 35.3 \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Results of mass balance calculations.