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Prediction of thermal behavior of pyrolyzed wet biomass by means of model with inner wood structure

Prediction of thermal behavior of pyrolyzed wet biomass by means of model with inner wood structure Abstract A simplified one-dimensional transient model for biomass pyrolysis in a fixed bed cylindrical reactor has been formulated and experiments have been carried out to verify the calculation results regarding temperature distribution. The mathematical model accounts for mass, momentum and heat transfer, including moisture evaporation and convection of pyrolysis gases. Numerical simulation has allowed to predict temperature and heat flux distribution, and the dynamics of feedstock devolatilization. Special attention has been devoted to the analysis of the effect of biomass moisture content on the pyrolysis process. The model of moisture vaporization in biomass bed was proposed, which included structure of surface of biomass particles. Assuming that vaporization occurs on the border of the dry and wet areas of the bed, the flux of water vaporization depends on the specific surface area of the particles and overall heat flux. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png "Journal of Thermal Science" Springer Journals

Prediction of thermal behavior of pyrolyzed wet biomass by means of model with inner wood structure

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References (30)

Publisher
Springer Journals
Copyright
2015 Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag Berlin Heidelberg
ISSN
1003-2169
eISSN
1993-033X
DOI
10.1007/s11630-015-0759-1
Publisher site
See Article on Publisher Site

Abstract

Abstract A simplified one-dimensional transient model for biomass pyrolysis in a fixed bed cylindrical reactor has been formulated and experiments have been carried out to verify the calculation results regarding temperature distribution. The mathematical model accounts for mass, momentum and heat transfer, including moisture evaporation and convection of pyrolysis gases. Numerical simulation has allowed to predict temperature and heat flux distribution, and the dynamics of feedstock devolatilization. Special attention has been devoted to the analysis of the effect of biomass moisture content on the pyrolysis process. The model of moisture vaporization in biomass bed was proposed, which included structure of surface of biomass particles. Assuming that vaporization occurs on the border of the dry and wet areas of the bed, the flux of water vaporization depends on the specific surface area of the particles and overall heat flux.

Journal

"Journal of Thermal Science"Springer Journals

Published: Feb 1, 2015

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