Effect of Fuel Moisture Content on Biomass-IGCC Performance

Author:

Hughes W. E. M.1,Larson E. D.1

Affiliation:

1. Center for Energy and Environmental Studies, School of Engineering and Applied Science, Princeton University, Princeton, NJ 08544

Abstract

The moisture level in biomass fuels potentially impacts efficiency in conversion to power. This paper examines the efficiency and net power output of a fluidized bed gasifier-combined cycle with flue gas drying for a range of as-received raw biomass moisture contents and levels of pregusification drying. Due to the lack of empirical data available, a modeling approach is used to simulate the effect of varying moisture content in the gasifier feed biomass. For a specified as-received biomass moisture content, drying prior to gasification increases overall efficiency, but the gains in efficiency decrease with increasing levels of drying. For a specified post-dryer gasifier feed moisture content, cycle efficiency and power output increase with decreasing as-received biomass moisture down to 30 percent, below which the change in cycle performance is negligible.

Publisher

ASME International

Subject

Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering

Reference14 articles.

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2. Consonni, S., Lozza, G., Macchi, E., Chiesa, P., and Bombarda, P., 1991, “Gas-Turbine-Based Advanced Cycles for Power Generation. Part A: A Calculation Model,” Proceedings 1991 Yokohama International Gas Turbine Congress, Gas Turbine Society of Japan, Tokyo, pp. 201–210.

3. Corman, J. C., 1995, “Gas Turbine Power Generation—Status and Environmental Considerations,” Proceedings, 1995 Cogen Turbo Power, ASME, New York, NY.

4. Gomes, A., Alves, J., and Leite, H., 1996, “Teor de umidade da madeira emfuncao do tempo de secagem,” final report of Wood Drying Tests by COPENER for Companhia Hidro Electrica do Sao Francisco, Recife, Brazil.

5. Hall, D. O., Rosillo-Calle, F., Williams, R. H., and Woods, J., 1993, “Biomass for Energy: Supply Prospects,” Renewable Energy: Sources for Fuels and Electricity, Johansson, Kelly, Reddy, and Williams, eds., Island Press, Washington D. C., pp. 595–651.

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