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Slow thermal decomposition of lignocelluloses compared to numerical model: Fine particle emission, gaseous products analysis

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  • Šnajdárek, Ladislav
  • Chýlek, Radomír
  • Pospíšil, Jiří

Abstract

This paper is focused on aerosol fine particle release during the thermal decomposition of beech wood samples with identical mass under an oxidizing and inert atmosphere. This thermal degradation of wood is a significant part of the biomass combustion and pyrolytic process. This contribution focuses on nanoparticles emission with specifying sizes and concentrations in the range of 18–545 nm during thermal degradation processes and determining correlations between individual thermal degradation processes of a wood sample with the same weights but with different heating rates. The flue gases' chemical composition was simultaneously analyzed using a quadrupole mass spectrometer during the thermal degradation process. The weight loss of the sample and its derivation were monitored using a thermogravimeter. This combination made it possible to identify the ranges with the highest particle emission concerning the wood sample and the sample's heating rate. The fine particle identification apparatus uses a Scanning Mobility Particle Sizer and a condensation particle counter. This experimentally obtained data were then compared with the numerical model CPD-Bio. In this case, the comparison was focused on the prediction of the temperatures of the individual pyrolysis stages, at which gaseous products and especially tars are formed.

Suggested Citation

  • Šnajdárek, Ladislav & Chýlek, Radomír & Pospíšil, Jiří, 2022. "Slow thermal decomposition of lignocelluloses compared to numerical model: Fine particle emission, gaseous products analysis," Energy, Elsevier, vol. 261(PB).
    • Handle: RePEc:eee:energy:v:261:y:2022:i:pb:s0360544222021533
    DOI: 10.1016/j.energy.2022.125268
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    References listed on IDEAS

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    1. Ning Li & Jiale Zhang & Zhihe Li & Yongjun Li, 2020. "Characteristics of Aerosol Formation and Emissions During Corn Stalk Pyrolysis," Energies, MDPI, vol. 13(22), pages 1-15, November.
    2. Sitek, Tomáš & Pospíšil, Jiří & Poláčik, Ján & Chýlek, Radomír, 2021. "Thermogravimetric analysis of solid biomass fuels and corresponding emission of fine particles," Energy, Elsevier, vol. 237(C).
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