A Mathematical Model of Biomass Briquette Fuel Combustion


The numerical simulation model is proposed according to the characteristics of the biomass briquette fuels, which involves two main areas of interest: the solid combustion model in the bed and the out-of-bed gas combustion model. The contents and characteristics of 3 kinds of biomass and coals were experimentally tested. The biomass fuels compared with the coal fuel have the following characteristics: 1) Higher volatile content, lower fixed carbon content and calorific value; 2) Lower carbon content, higher oxygen content; 3) Lower ignition temperature, faster burning velocity. The discredited equations were established by the finite element analysis method, which analyzed the fuel endothermic process on the grate, while the out-of-bed gas combustion process was simulated by CFD. These two processes are strongly coupled. The results of the numerical simulation contain the steady state temperature distribution, oxygen distribution, carbon dioxide distribution and so on, which are used to judge burning effect and provide the correct furnace transformation method.

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J. Sui, X. Xu, B. Zhang, C. Huang and J. Lv, "A Mathematical Model of Biomass Briquette Fuel Combustion," Energy and Power Engineering, Vol. 5 No. 4B, 2013, pp. 1-5. doi: 10.4236/epe.2013.54B001.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] M. F. Demirbas, M. Balat and H. Balat, “Potential Contribution of Biomass to the Sustainable Energy Development,” Energy Conversion and Management, Vol. 50, No. 7, 2009, pp. 1746-1760. doi:10.1016/j.enconman.2009.03.013
[2] Y. Guo and B. Q. Liu, “Analysis and Improvement of Flame Detection System about Power Supply Design Defects,” Boiler Technology, 2012.
[3] Y. D. Lliang, Z. G. Li and Q. Z. Niu, “Biomass Fuels and Biomass Boiler,” Industrial Boiler Modern Design and Development, China's Quality Press, Beijing, 2011, pp. 123-164.
[4] P. lin, “Experi-mental Study on the Biomass Combustion Character in Stoker-Fired Boiler,” Shanghai Jiao Tong University, 2008.
[5] L. Wang, “A Critical Review on Additives to Reduce Ash Related Operation Problems in Biomass Combustion Applications,” Energy Procedia, Vol. 20, 2012, pp. 20-29. doi:10.1016/j.egypro.2012.03.004
[6] C. Ghenai and I. Janajreh, “CFD Analysis of the Effects of Cofiring Biomass with Coal,” Energy Conversion and Management, 2010, Vol. 51, No. 8, pp. 1694-1701. doi:10.1016/j.enconman.2009.11.045
[7] H. X. Wu, H. B. Li and Z. L. Zhao, “Thermogravimetric analysis and Pyrolytic Kinetic Study on Coal/Biomass Blends,” Journal of Fuel Chemistry and Technology, pp. 538-545.
[8] D. Eskilsson, “Optimisation of Efficiency and Emissions in Pellet Burners,” Biomass and Bioenergy, Vol. 27, No. 6, 2004, pp. 541-546. doi:10.1016/j.biombioe.2003.09.008
[9] R. Scharler and I. Obernberger, “Numerical Modeling of Biomass Grate Furnace,” Proceeding of 5th European conference on industrial furnaces and boilers, Porto, Portugal, 2000.
[10] M. Miltner, A Makaruk, M. Harasek and A. Friedl, “CFD-modeling Fort The Combustion of Solid Baled Biomass,” Fifth international conferdence on CFD in the Process Industrie, Melbourne, Austria, 2006.
[11] Y. B. Yang, “Mathematical Modelling of Straw Combustion in a 38 MWe Power Plant Furnace and Effect of Operating Conditions,” Fuel, Vol. 86, No. 1-2, 2007, pp. 129-142.doi:10.1016/j.fuel.2006.06.023
[12] X. Zhang, “Experimental Investigation and Mathematical Modelling of Wood Combustion in a Moving Grate Boiler,” Fuel Processing Technology, Vol. 91, No. 11, 2010, pp. 1491-1499. doi:10.1016/j.fuproc.2010.05.026
[13] J. Pprteiro, J. Collazo, D. Patino, J. C. M. Gonzalez and L. Miguez, “Numerical Modeling of a Biomass Pellet Domestic Boiler,” Energy Fuels, Vol. 23, 2009, pp. 1067-1075.doi:10.1021/ef8008458
[14] C. Yin, L. Rose-dahl, S. K. Kaer, C. Sonnik, S. L. Hvid and T. Hille, “Mathematical Modeling and Experimental Study of Biomass Combustion in a Thermal 108 MW Grate-Fired Boiler,” Energy Fuels, Vol. 22, 2008, pp. 1380-1390.doi:10.1021/ef700689r
[15] J. Chaney, H. Liu and J. Li, “An Overview of CFD Modelling of Small-scale Fixed-bed Biomass Pellet Boilers with Preliminary Results from a Simplified Approach,” Energy Conversion and Management, Vol. 63, 2012, pp. 149-156. doi:10.1016/j.enconman.2012.01.036

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