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RESEARCH PAPERS

Flyash Adhesion in Simulated Coal-Fired Gas Turbine Environment

[+] Author and Article Information
R. K. Ahluwalia, K. H. Im

Argonne National Laboratory, Argonne, IL 60439

R. A. Wenglarz

Allison Gas Turbine Division of General Motors, Indianapolis, IN 46206

J. Eng. Gas Turbines Power 111(4), 672-678 (Oct 01, 1989) (7 pages) doi:10.1115/1.3240311 History: Received December 23, 1987; Online October 15, 2009

Abstract

A rich-quench-lean subscale turbine combustor has been used to expose specimens to the products of combustion from several beneficiated coal-water fuels. An analytical scheme is formulated to extract sticking coefficients from the measured weight gain data, particle size spectrum, and particle density and composition. The inferred sticking coefficients, appropriate for impaction on the pressure surface, range between 0.0003 and 0.11 and are strong functions of the gas and surface temperatures but rather insensitive to the impact angle. The implications of these results on coal-fired gas turbine operation are discussed.

Copyright © 1989 by ASME
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