A Biomass Combustion-Gasification Model: Validation and Sensitivity Analysis

Author:

Bettagli N.1,Desideri U.2,Fiaschi D.1

Affiliation:

1. Dipartimento di Energetica, Universita` di Firenze, Via Santa Marta 3, 50139 Firenze, Italia

2. Istituto di Energetica, Universita` di Perugia, Strada Santa Lucia-Canetola, 06125 Perugia, Italia

Abstract

The aim of the present paper is to study the gasification and combustion of biomass and waste materials. A model for the analysis of the chemical kinetics of gasification and combustion processes was developed with the main objective of calculating the gas composition at different operating conditions. The model was validated with experimental data for sawdust gasification. After having set the main kinetic parameters, the model was tested with other types of biomass, whose syngas composition is known. A sensitivity analysis was also performed to evaluate the influence of the main parameters, such as temperature, pressure, and air-fuel ratio on the composition of the exit gas. Both oxygen and air (i.e., a mixture of oxygen and nitrogen) gasification processes were simulated.

Publisher

ASME International

Subject

Geochemistry and Petrology,Mechanical Engineering,Energy Engineering and Power Technology,Fuel Technology,Renewable Energy, Sustainability and the Environment

Reference12 articles.

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2. Bingyan X. , ChuangzhiW., ZhengfenL., and XiguangZ., 1992, “Kinetic Study on Biomass Gasification,” Solar Energy, Vol. 49, No. 3, pp. 199–204.

3. Ergun S. , 1956, “Kinetics of the Reaction of Carbon Dioxide with Carbon,” Journal of Physical Chemistry, Vol. 60, pp. 480–485.

4. Laidler, K. J., 1987, Chemical Kinetics, Harper & Row Publishers, New York, NY.

5. Lamorey, G. W., Jenkins, B. M., and Gross, J. R., 1986, “LP Engine and Fluidized Bed Gas Producer Performance,” American Society of Agricultural Engineers (ASAE), Paper No. 86–3072.

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