Authors: O.V. Kasyanova, D.S. Shapranko, Yu.N. Dudnikova, Z.R. Ismagilov

Title of the article: Research of physical and chemical characteristics solid rescue pyrolysis of resinotechnical products

Year: 2019, Issue: 2, Pages: 101-110

Branch of knowledge: 05.17.07 Chemical technology of fuel and high-energy substances

Index UDK: 678:54.384.2/67.03

DOI: 10.26730/1999-4125-2019-2-101-110

Abstract: The work identified the physico-chemical characteristics of the carbon solid residue (UTO) of the pyrolysis of rubber products (RTI) obtained at the «Pirotex» unit at a temperature of 350-470° C. Most of the recyclable waste from RTI is made up of large-sized tires, predominantly of the «Belaz» brand. It is established that the particle size of the UTO affects the moisture content, volatile yield, acidity, bulk density, sorption characteristics. A UTO with particle sizes of 0,2–0,5 mm has an insufficiently developed specific surface area S_ssa ~ 40 m²/g, the formation of a porous structure during low-temperature pyrolysis occurs due to the formation of mesopores, with a diameter of 200-500 Å. It was determined that the composition of UTO contains more than 83% of carbon, 2,5–3,8% of zinc, 1,6% of silicon. According to the results of thermal analysis, the temperature range of decomposition of hydrocarbon residues of 375–500° C was determined. It is recommended to indicate the obtained characteristics in the technical passport for finished products, which will help potential consumers to choose methods of UTO modification.

Key words: olid residue physicochemical characteristic pyrolysis rubber products

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