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RESEARCH PAPERS: Gas Turbines: Coal, Biomass, and Alternative Fuels

Effect of Fuel Moisture Content on Biomass-IGCC Performance

[+] Author and Article Information
W. E. M. Hughes, E. D. Larson

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

J. Eng. Gas Turbines Power 120(3), 455-459 (Jul 01, 1998) (5 pages) doi:10.1115/1.2818166 History: Received February 17, 1997; Online November 19, 2007

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.

Copyright © 1998 by The American Society of Mechanical Engineers
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