Kinetic study on thermal decomposition of woods in oxidative environment
Kinetic study on thermal decomposition of woods in oxidative environment
The purpose of this work is to gain knowledge on kinetics of biomass decomposition under oxidative atmospheres, mainly examining effect of heating rate on different biomass species. Two sets of experiments are carried out: the first set of experiments is thermal decomposition of four different wood particles, namely aspens, birch, oak and pine under an oxidative atmosphere and analysis with TGA; and the second set is to use large size samples of wood under different heat fluxes in a purpose-built furnace, where the temperature distribution, mass loss and ignition characteristics are recorded and analyzed by a data post-processing system. The experimental data is then used to develop a two-step reactions kinetic scheme with low and high temperature regions while the activation energy for the reactions of the species under different heating rates is calculated. It is found that the activation energy of the second stage reaction for the species with similar constituent fractions tends to converge to a similar value under the high heating rate.
thermal decomposition, biomass, hemi-cellulose, cellulose, kinetics
1024-1030
Gu, Sai
a6f7af91-4731-46fe-ac4d-3081890ab704
Luo, Kai H.
86f52a13-fdcd-40e4-8344-a6fe47c4e16b
June 2009
Gu, Sai
a6f7af91-4731-46fe-ac4d-3081890ab704
Luo, Kai H.
86f52a13-fdcd-40e4-8344-a6fe47c4e16b
Gu, Sai and Luo, Kai H.
(2009)
Kinetic study on thermal decomposition of woods in oxidative environment.
Fuel, 88 (6), .
(doi:10.1016/j.fuel.2008.10.034).
Abstract
The purpose of this work is to gain knowledge on kinetics of biomass decomposition under oxidative atmospheres, mainly examining effect of heating rate on different biomass species. Two sets of experiments are carried out: the first set of experiments is thermal decomposition of four different wood particles, namely aspens, birch, oak and pine under an oxidative atmosphere and analysis with TGA; and the second set is to use large size samples of wood under different heat fluxes in a purpose-built furnace, where the temperature distribution, mass loss and ignition characteristics are recorded and analyzed by a data post-processing system. The experimental data is then used to develop a two-step reactions kinetic scheme with low and high temperature regions while the activation energy for the reactions of the species under different heating rates is calculated. It is found that the activation energy of the second stage reaction for the species with similar constituent fractions tends to converge to a similar value under the high heating rate.
More information
Published date: June 2009
Keywords:
thermal decomposition, biomass, hemi-cellulose, cellulose, kinetics
Identifiers
Local EPrints ID: 147411
URI: http://eprints.soton.ac.uk/id/eprint/147411
PURE UUID: 7adc86d5-7540-427f-abbb-12f667f576d9
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Date deposited: 26 Apr 2010 08:38
Last modified: 14 Mar 2024 01:00
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Contributors
Author:
Sai Gu
Author:
Kai H. Luo
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