| Autor: |
Holovenko, V. O., Andriianova, M. V., Roienko, K. V., Roienko, Yu. S. |
| Předmět: |
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| Zdroj: |
Issues of Chemistry & Chemical Technology / Voprosy Khimii & Khimicheskoi Tekhnologii; Jul2022, Vol. 7 Issue 4, p24-30, 7p |
| Abstrakt: |
Pyrolysis of solid polymer waste (car tires) was investigated in the temperature range of 350-650°C for 15-105 minutes. It was established that the maximum yield of a liquid product (58%) was observed in the temperature range of 520-540°C. The obtained pyrocondensate was compared with oil and it was stated that pyrolysis condensate was quite heavy, but had low kinematic viscosity and average molecular weight. It was determined that the most part of sulfur (1.27-2.1%) remained in the solid residue during the rubber pyrolysis. Unsaturated hydrocarbons (12.9%) in pyrolysis oil were found due to the presence of double bonds in rubber and the formation of double bonds during the polymer destruction. It was found that increasing the pyrolysis temperature from 400 to 600°C led to a decrease in polycyclic naphthenes and an increase in the proportion of aromatic ring in the molecule due to the cleavage of alkyl substituents. The fractional composition of pyrolysis products obtained in the temperature range of 520 -540°C was determined. The yield of the gasoline fraction, the diesel fraction and the residue was 26-28 wt.%, 18-23 wt.% and 45-47 wt.%, respectively. Comparison of the properties of fractions obtained from pyrocondensate with traditional petroleum products showed that the content of sulfur compounds for gasoline and diesel fractions was overestimated due to the presence of sulfur vulcanizing agent in rubber. The content of aromatic compounds, density and viscosity were slightly increased in those fractions. The properties of the fraction 350°C (end of boiling) were almost the same as those of fuel oil. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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