Published Feb 24, 2020


Google Scholar
Search GoogleScholar

Daniel Andres Quintero-Coronel, MSc

Edwin Edgardo Espinel-Blanco, MSc

Eder Norberto Flórez-Solano, MSc



A chemical equilibrium model for known outlet temperature of the products was carried out on a downdraft fixed bed gasifier. Biomass from oil palm kernel is used with proximate and ultimate analysis; the general gasification reaction takes into account the biomass moisture, the reaction products are formed by CH4, H2O, N2, CO, CO2 and H2. The model is described in detail and the equations are solved using the EES software. The model shows the results obtained for temperature ranges from 500 K to 1500 K and 1.0 atm. The model is validated by direct comparison of the gas composition with the results reported in the literature for similar conditions, obtaining favorable results.


chemical equilibrium, Gibbs energy, biomass, downdraft gasifierequilibrio químico, energía de Gibbs, biomasa, gasificador de corriente descendente

[1] M. Bassyouni et al., “Date palm waste gasification in downdraft gasifier and simulation using ASPEN HYSYS,” vol. 88, pp. 693–699, 2014.
[2] G. García, “Estudio experimental de la cogasificación de fangos de EDAR y carbón con aire en lecho fluidizado,” tesis, Universidad de Zaragoza, España, 2013.
[3] S. Jarungthammachote and A. Dutta, “Thermodynamic equilibrium model and second law analysis of a downdraft waste gasifier,” Energy, vol. 32, no. 9, pp. 1660–1669, 2007.
[4] A. Melgar, J.F. Pérez, H. Laget, and A. Horillo, “Thermochemical equilibrium modelling of a gasifying process,” Energ. Convers. Manage., vol. 48, no. 1, pp. 59–67, 2007.
[5] T.H. Jayah, L. Aye, R.J. Fuller, and D.F. Stewart, “Computer simulation of a downdraft wood gasifier for tea drying,” Biomass Bioenergy, vol. 25, no. 4, pp. 459–469, 2003.
[6] A. Khadse, P. Parulekar, P. Aghalayam, and A. Ganesh, “Equilibrium model for biomass gasification.” Proceedings of the 1st National Conference on Advances in Energy Research (AER-2006), December 4-5, 2006-ISBN 9780230630062.
[7] A.Z. Mendiburu, J.A. Carvalho, R. Zanzi, C.R. Coronado, and J.L. Silveira, “Thermochemical equilibrium modeling of a biomass downdraft gasifier: Constrained and unconstrained non-stoichiometric models,” Energy, vol. 71, pp. 624–637, 2014.
[8] A. Gagliano, F. Nocera, M. Bruno, and G. Cardillo, “Development of an Equilibrium-based Model of Gasification of Biomass by Aspen Plus,” Energy Procedia, vol. 111, pp. 1010–1019, 2017.
[9] F. Paviet, F. Chazarenc, and M. Tazerout, “Thermo chemical equilibrium modelling of a biomass gasifying process using ASPEN PLUS,” Int. J. Chem. React. Eng., vol. 7, p. A40, 2009.
[10] N. Ramzan, A. Ashraf, S. Naveed, and A. Malik, “Simulation of hybrid biomass gasification using Aspen plus : A comparative performance analysis for food , municipal solid and poultry waste,” Biomass Bioenergy, vol. 35, no. 9, pp. 3962–3969, 2011.
[11] M. Fernandez-Lopez, J. Pedroche, J.L. Valverde, and L. Sánchez-Silva, “Simulation of the gasification of animal wastes in a dual gasifier using Aspen Plus??,” Energy Convers. Manag., vol. 140, pp. 211–217, 2017.
[12] M. La Villetta, M. Costa, and N. Massarotti, “Modelling approaches to biomass gasification: A review with emphasis on the stoichiometric method,” Renew. Sustain. Energy Rev., vol. 74, no. November 2016, pp. 71–88, 2017.
[13] A.A.P. Susastriawan, H. Saptoadi, and Purnomo, “Small-scale downdraft gasifiers for biomass gasification: A review,” Renew. Sust. Energ. Rev., vol. 76, pp. 989–1003, 2017.
[14] C.A. Estrada Martínez, “Modelado unidimensional y multipartícula del proceso de gasificación de biomasa lignocelulósica en una planta industrial,” tesis doctoral, Universidad de Valladolid, España, 2015 [online]. Available:
[15] Y. A. Cengel and M. E. Boles, Termodinamica-Cengel, 7th. México: McGrow Hill, 2011.
[16] Marcio L. de Souza-Santos, Solid Fuels Combustion and Gasification, 2nd ed. New York: CRC Press, 2010.
[17] P. Kuo, W. Wu, and W. Chen, “Gasification performances of raw and torrefied biomass in a downdraft fixed bed gasifier using thermodynamic analysis,” Fuel, vol. 117, pp. 1231–1241, 2014.
[18] H.J. Huang and S. Ramaswamy, “Modeling biomass gasification using thermodynamic equilibrium approach,” Appl. Biochem. Biotechnol., vol. 154, no. 1–3, pp. 193–204, 2009.
[19] C.R. Altafini, P.R. Wander, and R.M. Barreto, “Prediction of the working parameters of a wood waste gasifier through an equilibrium model,” Energy Convers. Manag., vol. 44, no. 17, pp. 2763–2777, 2003.
How to Cite
Quintero-Coronel, D. A., Espinel-Blanco, E. E., & Flórez-Solano, E. N. (2020). Development of a Chemical Equilibrium Model of the Downdraft Fixed Bed Gasification Process with known Product Temperature, Using air as an Oxidizing Agent. Ingenieria Y Universidad, 24.
Bioengineering and chemical engineering