Selection of Thermooxidation Treatment Conditions of Gasoline Fractions Obtained From Liquid Products of Waste Tires Pyrolysis

Serhiy Pyshyev1, Oleh Kukhar1, Yurii Lypko1, Ananiy Kohut1, Oksana Nahurska1, Taras Chaikivskyi1, Bohdan Korchak1

Affiliation:

1 Lviv Polytechnic National University, 12 Bandera St., 79013 Lviv, Ukraine bohdan.o.korchak@lpnu.ua

DOI:

https://doi.org/10.23939/chcht20.01.208

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Abstract:

Waste tires (WT) are the main component of industrial rubber waste. One of the promising methods for rational utilization of WT is the process of their pyrolysis - a thermochemical process during which thermally unstable organic components that make up WT decompose into gaseous, liquid, and solid products at temperatures of 300-900 °C. Pyrolysis combines waste processing with energy and fuel recovery. Liquid pyrolysis products (LPP) can be considered the main products of WT pyrolysis, which are obtained as a result of condensation from volatile fractions of WT pyrolysis. They are a dark, opaque liquid with a characteristic pungent odor and consist mainly of aromatic and unsaturated compounds; therefore, their use as fuels requires extensive processing. This paper describes initial (exploratory) studies on the feasibility and expediency of using the thermal oxidation treatment process to purify the gasoline fraction ≤ 200°C obtained after atmospheric distillation of LPP. Oxidation was carried out in a batch reactor with air in the presence of water. The composition of the raw material mixture and its phase state during the process were investigated and calculated, and the pressure and raw material: air ratio were justified. These studies will serve as the basis for a future detailed analysis of the thermal oxidation of the gasoline fraction obtained from WT pyrolysis, to reduce its content of undesirable compounds (reactive unsaturated, sulfurous, and high-boiling aromatics).

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Selection of Thermooxidation Treatment Conditions of Gasoline Fractions Obtained From Liquid Products of Waste Tires Pyrolysis

Keywords: