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

A Direct Coal-Fired Combustion Turbine Power System Based on Slagging Gasification With In-Situ Gas Cleaning

[+] Author and Article Information
R. A. Newby

Westinghouse Science & Technology Center, 1310 Beulah Road, Pittsburgh, PA 15235

R. L. Bannister

Westinghouse Electric Corporation, Orlando, FL 32826-2399

J. Eng. Gas Turbines Power 120(3), 450-454 (Jul 01, 1998) (5 pages) doi:10.1115/1.2818165 History: Received February 17, 1997; Online November 19, 2007


Westinghouse began the development of a compact, entrained, slagging gasifier technology utilizing in-situ fuel gas cleaning for combustion turbine power cycles in 1986. The slagging gasifier is air-blown, and produces a hot, low-heating value fuel gas that can be combusted and quenched to combustion turbine inlet temperatures while maintaining low levels of NOx emissions. The U.S. Department of Energy sponsored engineering studies and pilot testing during the period 1986 to 1992. This work has shown that the technology has promise, although performance improvements are required in some key areas. A major challenge has been the development of insitu removal of sulfur, alkali vapor, and particulate to low enough levels to permit its use in combustion turbine power systems without additional, external gas cleaning. This paper reviews the Westinghouse slagging gasifier, direct coal-fired turbine power generation concept; the pilot test results; and the current development activities that Westinghouse is engaged in.

Copyright © 1998 by The American Society of Mechanical Engineers
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