Thermal decomposition characteristics of the tire pyrolysis oil derived from a twin-auger reactor: Study of kinetics and evolved gases

Felipe Campuzano*, Javier Ordoñez, Juan Daniel Martínez, Andrés F. Agudelo, S. Mani Sarathy, William L. Roberts

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

This study presents the characterization of the thermal decomposition (oxidation and pyrolysis) behavior of the oil (TPO) derived from the pyrolysis of End-of-Life Tires (ELT) in a twin-auger pyrolyzer, by means of thermogravimetric and calorimetric analyses, coupled with Fourier transform infrared spectroscopy (TG–FTIR). TPO oxidation and pyrolysis were conducted using air and N2, respectively, at three different heating rates (5, 10, and 20 °C/min) in a temperature range between 30 and 700 °C. Along the temperature program, the evolved gases were directed to the FTIR cell, where the functional groups within species present were measured. A global kinetic analysis was performed for the TPO oxidation, using four isoconversional methods, as well as the distributed activation energy model (DAEM) developed by Miura and Maki. The results obtained suggest that the oxidation process of TPO can be divided into three different reaction stages, namely: low-temperature oxidation (LTO) (<400 °C), fuel decomposition (400–500 °C), and high-temperature oxidation (HTO) (500–700 °C). Within the LTO stage, oxygen addition reaction to produce hydroperoxides were considered dominant in the initial stages, while the decomposition of the formed hydroperoxides was more significant at the later stage. Due to the characteristics of TPO, e.g., the presence of highly volatile compounds, the evaporation of hydrocarbons played an important role within the LTO stage. In the fuel decomposition stage, the formation of coke by the oxidative cracking of LTO residue and oxygen addition were believed to be the main reactions leading to gaseous products such as CO, CO2, H2O. Finally, in the HTO stage, the oxidation of coke was considered as the main reaction, exhibiting an evident exothermic activity. The activation energy distribution shows a similar pattern among the isoconversional methods and DAEM, with fluctuations between 40 and 200 kJ/mol. The analysis presented in this work sheds new light on the thermal decomposition of oil derived from the pyrolysis of ELT, which is relevant for its use in combustion systems.

Original languageEnglish (US)
Article number127248
JournalFuel
Volume338
DOIs
StatePublished - Apr 15 2023

Bibliographical note

Funding Information:
The authors would like to express their gratitude to the Colombian Ministry of Science, Technology, and Innovation (COLCIENCIAS) for the financial support to research project 1210-715-51742. F. Campuzano acknowledges COLCIENCIAS for the Ph.D. scholarship 757-2016. F. Campuzano also expresses his gratitude to the Clean Combustion Research Center at the King Abdullah University of Science and Technology (KAUST) for the research internship.

Funding Information:
The authors would like to express their gratitude to the Colombian Ministry of Science, Technology, and Innovation (COLCIENCIAS) for the financial support to research project 1210-715-51742. F. Campuzano acknowledges COLCIENCIAS for the Ph.D. scholarship 757-2016. F. Campuzano also expresses his gratitude to the Clean Combustion Research Center at the King Abdullah University of Science and Technology (KAUST) for the research internship.

Publisher Copyright:
© 2022 Elsevier Ltd

Keywords

  • End-of-Life Tires
  • FTIR
  • Kinetics
  • TGA/DSC
  • Tire pyrolysis oil
  • Twin-auger reactor

ASJC Scopus subject areas

  • General Chemical Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Organic Chemistry

Fingerprint

Dive into the research topics of 'Thermal decomposition characteristics of the tire pyrolysis oil derived from a twin-auger reactor: Study of kinetics and evolved gases'. Together they form a unique fingerprint.

Cite this