RECYCLING OF SOLID RESIDUE OF PYROLYSIS OF CAR TIRES

Abstract

Link for citation: Bukharkina T.V., Verzhichinskaya S.V., Tarkhanova I.G., Konovalov A.V. Recycling of solid residue of pyrolysis of car tires. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 8, рр. 79-90. In Rus. The relevance. Tire recycling contributes to the environmental situation due to the cost-effective disposal of large volumes of tires out of service, in addition, it is an opportunity to obtain valuable chemical products without using natural resources as the main sources of initial reagents. The main aim of the research is to identify and propose directions for processing car tires and the solid residue of their pyrolysis, depending on their type and quality. Objects: automobile tires of domestic and foreign production; pyrolysis products and their subsequent refinement of various car tires. Methods: technical analysis of solid carbon-containing materials – Eschka method, iodometry for determining the iodine number, determination of moisture and pH of an aqueous suspension, ash content, volatile matter, light transmission coefficient of a toluene extract. Results. It was revealed that the solid pyrolysis residue studied in the work with the obtained indicators of its quality can be used as a filler in the rubber mixture or as a sorbent for heavy oil products, and a scheme was developed that reflects the ways of processing the solid pyrolysis residue obtained as a result of the disposal of passenger cars. and truck tires of various domestic and foreign manufacturers. The result of the work, in particular, the dependence of the direction of processing the solid residue of the pyrolysis of car tires from various manufacturers on its quality indicators, can serve as a theoretical basis for developing a unified program for recycling car tires in order to preserve and improve the environmental situation in various regions.

Keywords

• pyrolysis
• carbon black
• recycling
• worn tires
• low-quality carbon