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The mechanism on liquefaction of waste tire by ethanolysis

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  • Wang, Xiaochao
  • Wang, Wei
  • Yu, Jie

Abstract

Thermo-chemical treatment methods are pivotal for effectively managing waste tire rubber (WTR) while promoting energy efficiency and emission reduction. This study investigates the liquefaction of WTR within a thermal ethanol environment, exploring temperature ranges (200–300 °C) and residence times (0–80 min) to discern the role of ethanol in tire degradation. Additionally, the study includes liquefaction experiments with cyclohexane as a solvent to contrast the effect of ethanol, and comparison between ethanol and water to elucidate solvent impact. Results indicate that at 300 °C for 40 min, oil yields peak at 53.05 % for a WTR/ethanol mass ratio of 1:8 and at 51.64 % for a ratio of 1:6, notably surpassing hydrolysis outcomes. By contracting with the results from the liquefaction with cyclohexane as solvent, the involvement of ethanol can facilitate liquid phase products, primarily alkenes and oxygen-containing compounds, attributed to aromatization inhibition. Heavy oils and heteroatomic compounds are characterized through Fourier-transform ion cyclotron resonance mass spectrometry (FT-ICR MS), detecting hydrocarbons and heteroatom compounds like NxOy, Ox, Sx, NxOySz, NxSy, and Nx. Notably, sulfur, a significant pollutant, predominantly manifests as sulfide in chars. These findings offer valuable insights into advancing waste tire recycling technologies.

Suggested Citation

  • Wang, Xiaochao & Wang, Wei & Yu, Jie, 2024. "The mechanism on liquefaction of waste tire by ethanolysis," Energy, Elsevier, vol. 307(C).
    • Handle: RePEc:eee:energy:v:307:y:2024:i:c:s0360544224025234
    DOI: 10.1016/j.energy.2024.132749
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    References listed on IDEAS

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