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Modeling of the Propagation of a Reaction Front in Fixed Bed Combustion of Wood Particles

Published online by Cambridge University Press:  31 August 2011

M. Bidabadi ,
M. S. Abedinejad  and
J. Fereidooni
M. Bidabadi
Affiliation:
Combustion Research Laboratory, School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran
M. S. Abedinejad
Affiliation:
Combustion Research Laboratory, School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran
J. Fereidooni*
Affiliation:
Combustion Research Laboratory, School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran
*
***Ph.D. candidate, corresponding author
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Abstract

The goal of the combustion research is to achieve optimum combustion mode. Reaction Front velocity is one of the most important parameter that is studied in this field. Most biomass consumed at the present time is burned in fixed or moving beds. Fixed-bed combustion systems are characterized by the slow combustion of large particles subjected to an oxidizing ambient. In this paper a model for propagation of a reaction front of wood particles in a fixed Bed is presented. Once the bed is ignited, an apparent flame zone is formed at the bed's top surface and the flame front moves downwards into the bed of fuel at a speed depending on fuel type and operating parameters. Effect of different parameters such as air flow rate through the bed, primary air temperature, moisture content, particle size and number density of fuel particles on the reaction front velocity has been studied. In order to compare the results of this model with the associated experimental data three species of wood fuels are studied and the agreement is found to be satisfactory.

Keywords

Reaction front velocityFixed bedWood combustionAnalytical solution
Type
Articles
Information
Journal of Mechanics , Volume 27 , Issue 3 , September 2011 , pp. 453 - 459
Copyright
Copyright © The Society of Theoretical and Applied Mechanics, R.O.C. 2011

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References

REFERENCES

1. Bidabadi, M. and Rahbari, A., “Modeling Combustion of Lycopodium Particles by Considering the Temperature Difference between the Gas and the Particles,” Combustion, Explosion and Shock Waves, 45, pp. 49–57 (2009).CrossRefGoogle Scholar
2. Bidabadi, M. and Rahbari, A., “Novel Analytical Model for Predicting the Combustion Characteristics of Premixed Flame Propagation in Lycopodium Dust particles,” Journal of Mechanics Science and Technology, 23, pp. 2417–2423 (2009).CrossRefGoogle Scholar
3. Bidabadi, M., Haghiri, A. and Rahbari, A., “The Effect of Lewis and Damköhler Numbers on the Flame Propagation through Micro-organic Dust Particles,” International Journal of Thermal Sciences, 49, pp. 534–542 (2010).CrossRefGoogle Scholar
4. Rathore, N. S., Panwar, N. L. and Chiplunkar, V. Y., “Industrial Application of Biomass Based Gasification System,” World Applied Sciences Journal, 5, pp. 406–409 (2008).Google Scholar
5. Yang, Y. B., Ryu, C., Khor, A., Sharifi, V. N. and Swithenbank, J., “Fuel Size Effect on Pinewood Combustion in a Packed Bed,” Fuel, 84, pp. 2026–2038 (2005).CrossRefGoogle Scholar
6. Brush, C., peters, B. and Nussbaumer, T., “Modelling Wood Combustion under Fixed Bed Conditions, Fuel, 82, pp. 729–738 (2003).Google Scholar
7. Porteiro, J., Míguez, J. L., Granada, E. and Moran, J. C., “Mathematical Modelling of the Combustion of a Single Wood Particle,” Fuel Processing Technology, 87, pp. 169–175 (2006).CrossRefGoogle Scholar
8. Ryu, C., Yang, Y. B., Khor, A., Yates, N. E., Sharifi, V. N. and Swithenbank, J., “Effect of Fuel Properties on Biomass Combustion: Part I. Experiments—Fuel type, Equivalence Ratio and Particle size,” Fuel, 85, pp. 1039–1046 (2006).CrossRefGoogle Scholar
9. Li, Z., Zhao, W., Zhao, G., Zhang, F. and Zhu, Q., “Effect of Corn Stalk Length on Combustion Characteristics in a Fixed Bed,” Energy and Fuels, 22, pp. 2009–2014 (2008).CrossRefGoogle Scholar
10. Huang, Y. L., Shiu, H. R., Chang, S. H., Wu, W. F. and Chen, S. L., “Comparison of Combustion Models in Cleanroom Fire,” Journal of Mechanics, 24 (2008).CrossRefGoogle Scholar
11. Saastamoinen, J. J., Taipale, R., Horttanainen, M. and Sarkomaa, P., “Propagation of the Ignition Front in Beds of Wood Particles,” Combustion and Flame, 123, pp. 214–226 (2000).CrossRefGoogle Scholar
12. Gort, R. and Brouwers, J. J. H., “Theoretical Analysis of the Propagation of a Reaction Front in a Packed Bed,” Combustion and Flame, 124, pp. 1–13 (2001).CrossRefGoogle Scholar
13. Pan, K. L., “Flame Propagation with Hydrodynamic Instability in Vortical Flows,” Journal of Mechanics, 24 (2008).Google Scholar
14. Saastamoinen, J. J., Horttanainen, M. and Sarkomaa, P., “Ignition Wave Propagation and Release of Volatiles in Beds of Wood Particles,” Combustion Science and Technology, 165, pp. 41–60 (2001).CrossRefGoogle Scholar
15. Szlęk, A., “Modeling of the Reaction-Front Propagation during the Fixed-Bed Combustion of Solid Fuel,” Combustion Science and Technology, 175, pp. 1711–1727 (2003).CrossRefGoogle Scholar
16. Zhou, H., Jensen, A. D., Garborg, P., Jensen, P. A. and Kavaliauskas, A., “Numerical Modeling of Straw Combustion in a Fixed Bed,” Fuel, 84, pp. 389–403 (2005).CrossRefGoogle Scholar
17. Zhao, W., Li, Z., Zhao, G., Zhang, F. and Zhu, Q., “Effect of Air Preheating and Fuel Moisture on Combustion Characteristics of Corn Straw in a Fixed bed,” Energy Conversion and Management, 49, pp. 3560–3565 (2008).CrossRefGoogle Scholar
18. Thunman, H. B. and Leckner, B., “Ignition and Propagation of a Reaction Front in Cross-current Bed Combustion of Wet Biofuels,” Fuel, 80, pp. 473–481 (2001).CrossRefGoogle Scholar
19. Fatehi, M. and Kaviany, M., “Adiabatic Reverse Combustion in a Packed Bed,” Combustion and Flame1, 99, pp. 1–17 (1994).CrossRefGoogle Scholar
20. Bidabadi, M., Azimi, M. and Rahbari, A., “Effects of Radiation and Particle Size on the Pyrolysis of Biomass Particles,” Proceedings of the IMechE, Part C: Journal of Mechanical Engineering Science, 224, pp. 675–682 (2010).CrossRefGoogle Scholar
21. Gort, R., “On the Propagation of a Reaction Front in a Packed Bed: Thermal Conversion of Municipal Solid Waste and Biomass,” PhD Thesis, University of Twente, Enschede, The Netherlands (1995).Google Scholar
22. Siegel, R. and Howell, J. R., Thermal radiation heat transfer, 3rd Ed., Philadelphia, Taylor & Francis, (1992).Google Scholar
23. Seshadri, K., Berlad, A. L. and Tangirala, V., “The Structure of Premixed Particle-Cloud Flames,” Combustion and Flame, 89, pp. 333–342 (1992).CrossRefGoogle Scholar
24. Wakao, N. and Kaguei, S., Heat and Mass Transfer in Packed Beds, London: Gordon & Breach (1982).Google Scholar
25. Yang, W., Ryu, C. and Choi, S., “Unsteady One-dimensional Model for a Bed Combustion of Solid Fuels,” Proceedings of the IMechE, Part A: Journal of Power and Energy, 218 (2004).CrossRefGoogle Scholar
26. Horttanainen, M. V. A., Saastamoinen, J. J. and Sarkomaa, P. J., “Ignition Front Propagation in Packed Beds of Wood Particles,” IFRF Combustion journal, Article Number 200003 (2000).Google Scholar
27. Yang, Y. B., Ryu, C., Khor, A., Yates, N. E., Sharifi, V. N. and Swithenbank, J., “Effect of Fuel Properties on Biomass Combustion. Part II. Modelling Approach—Identification of the Controlling Factors,” Fuel, 84, pp. 2116–2130 (2005).CrossRefGoogle Scholar