Char oxidation of torrefied biomass at high temperatures and high heating rates

Jun Li, Giorgio Bonvicini, Xiaolei Zhang, Weihong Yang, Leonardo Tognotti

Research output: Contribution to journalArticle

Abstract

The char oxidation of a torrefied biomass and its parent material was carried out in an isothermal plug flow reactor (IPFR), which is able to rapidly heat the biomass particles to a maximum temperature of 1400°C at a heating rate of 10;4; °C/s, similar to the real conditions found in power plant furnaces. During each char oxidation test, the residues of biomass particles were collected and analyzed to determine the weight loss based on the ash tracer method. According to the experimental results, it can be concluded that chars produced from a torrefied biomass are less reactive than the ones produced, under the same conditions, from its raw material. The apparent kinetics of the torrefied biomass and its parent material are determined by minimizing the difference between the modeled and the experimental results. The predicted weight loss during char oxidation, using the determined kinetics, agrees well with experimental results.

LanguageEnglish
Pages582-586
Number of pages5
JournalEnergy Procedia
Volume61
DOIs
Publication statusPublished - 2014

Fingerprint

Heating rate
Biomass
Oxidation
Ashes
Temperature
Kinetics
Raw materials
Power plants
Furnaces

Keywords

  • char oxidation
  • high temperature
  • kinetics
  • torrefied biomass
  • isothermal plug flow reactor

Cite this

Li, Jun ; Bonvicini, Giorgio ; Zhang, Xiaolei ; Yang, Weihong ; Tognotti, Leonardo. / Char oxidation of torrefied biomass at high temperatures and high heating rates. In: Energy Procedia. 2014 ; Vol. 61. pp. 582-586.
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author = "Jun Li and Giorgio Bonvicini and Xiaolei Zhang and Weihong Yang and Leonardo Tognotti",
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Char oxidation of torrefied biomass at high temperatures and high heating rates. / Li, Jun; Bonvicini, Giorgio; Zhang, Xiaolei; Yang, Weihong; Tognotti, Leonardo.

In: Energy Procedia, Vol. 61, 2014, p. 582-586.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Char oxidation of torrefied biomass at high temperatures and high heating rates

AU - Li, Jun

AU - Bonvicini, Giorgio

AU - Zhang, Xiaolei

AU - Yang, Weihong

AU - Tognotti, Leonardo

N1 - Originally presented at the 6th International Conference on Applied Energy (ICAE2014).

PY - 2014

Y1 - 2014

N2 - The char oxidation of a torrefied biomass and its parent material was carried out in an isothermal plug flow reactor (IPFR), which is able to rapidly heat the biomass particles to a maximum temperature of 1400°C at a heating rate of 10;4; °C/s, similar to the real conditions found in power plant furnaces. During each char oxidation test, the residues of biomass particles were collected and analyzed to determine the weight loss based on the ash tracer method. According to the experimental results, it can be concluded that chars produced from a torrefied biomass are less reactive than the ones produced, under the same conditions, from its raw material. The apparent kinetics of the torrefied biomass and its parent material are determined by minimizing the difference between the modeled and the experimental results. The predicted weight loss during char oxidation, using the determined kinetics, agrees well with experimental results.

AB - The char oxidation of a torrefied biomass and its parent material was carried out in an isothermal plug flow reactor (IPFR), which is able to rapidly heat the biomass particles to a maximum temperature of 1400°C at a heating rate of 10;4; °C/s, similar to the real conditions found in power plant furnaces. During each char oxidation test, the residues of biomass particles were collected and analyzed to determine the weight loss based on the ash tracer method. According to the experimental results, it can be concluded that chars produced from a torrefied biomass are less reactive than the ones produced, under the same conditions, from its raw material. The apparent kinetics of the torrefied biomass and its parent material are determined by minimizing the difference between the modeled and the experimental results. The predicted weight loss during char oxidation, using the determined kinetics, agrees well with experimental results.

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KW - isothermal plug flow reactor

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