EFFECT OF TORREFACTION PROCESS ON THE COMBUSTION AND PYROLYSIS BEHAVIOUR OF RICE STRAW

Authors

  • Thanaphon Wiangthong Program of Mechanical Engineering, Faculty of Engineering, Rajamangala University of Technology Phra Nakhon
  • Padipan Tinprabath Program of Mechanical Engineering, Faculty of Engineering, Rajamangala University of Technology Phra Nakhon
  • Prasert Wirotecheewan Program of Mechanical Engineering, Faculty of Engineering, Rajamangala University of Technology Phra Nakhon
  • Nataporn Nataporn Program of Mechanical Engineering, Faculty of Engineering, Rajamangala University of Technology Phra Nakhon

Keywords:

Torrefaction, Rice straw, Pyrolysis, Combustion, Thermogravimetric analysis (TGA)

Abstract

Biomass is widely recognized as a renewable energy source that can be used as a substitute for fossil fuels. In order to comprehend and simulate combustion of biomass in large-scale furnaces and to effectively design and operate conversion systems, it is crucial to develop a comprehensive understanding of the pyrolysis characteristics and combustion kinetics. The objective of this study is to conduct a comparative analysis of the thermal properties and kinetic behaviour of raw rice straw and torrefied rice straw under both inert and oxidative atmospheres using thermogravimetric analyser. The results revealed that the lower temperature of initial combustion (Tic) for rice straw was found to be 249 °C, while Tic for torrefied rice straw was 252 °C. Tic serves as a critical parameter for ensuring the safe storage of both raw and torrefied rice straw.  The Burnout temperature (Tb) values for both raw and torrefied rice straw fell within
the range of 468 °C to 470 °C, indicating that all samples achieved complete combustion at the same temperature. The results showed that the degree of thermal decomposition is higher for the torrefied rice straw, which suggested that the sample was less reactive than raw rice straw.  The findings of this study can facilitate the design of combustion reactors and the determination of optimal operating conditions for such reactors.

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Published

2023-12-20 — Updated on 2024-05-29

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How to Cite

Wiangthong, T. . ., Tinprabath, P. ., Wirotecheewan, P. . ., & Nataporn, N. (2024). EFFECT OF TORREFACTION PROCESS ON THE COMBUSTION AND PYROLYSIS BEHAVIOUR OF RICE STRAW. PSRU Journal of Science and Technology, 8(3), 39–53. Retrieved from https://ph01.tci-thaijo.org/index.php/Scipsru/article/view/253543 (Original work published December 20, 2023)

Issue

Vol. 8 No. 3 (2023): September - December 2023

Section

Research Articles

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