Comparison of yield of tires pyrolysis in laboratory and pilot scales

Abstract

The contribution deals with the pyrolysis of waste tires of passenger vehicles and trucks. During the pyrolysis pyrolytic char, oil and gas occur. Within the research a yield of individual fractions determined according to ČSN ISO 647 and a pilot scale test was performed, in order to carry out basic physical and chemical characteristics of pyrolytic char. During the test according to ČSN ISO 647 about 39 % of pyrolytic char, 44 % of tar occurred and by 16 % the gaseous phase was represented. During the pilot scale test the material was pyrolyzed up to the temperature of 600 °C, heating rate was set to 2.7 °C/min and residence time was 60 min. Under the given conditions the tire pyrolysis passes over at temperatures from 175 to 500 °C. We obtained 51.74 % of organic liquid, 39.16 % of char, 8.94 % of gas and 1.16 % of orogenic water. A problem of further use of the pyrolytic char may be a high content of zinc and other ballast inorganic substances.