Effect of Composition on Melting Behavior of Coal Ash

[+] Author and Article Information
K. S. Vorres

Institute of Gas Technology, 3424 South State St., Chicago, Ill. 60616

J. Eng. Power 101(4), 497-499 (Oct 01, 1979) (3 pages) doi:10.1115/1.3446607 History: Received July 31, 1978; Online July 14, 2010


The design of coal combustion and conversion equipment must consider the behavior of coal ash in the temperature region of application. Correlations of different chemical parameters, including base-to-acid ratio have been made with slagging and fouling behavior. The ionic potential, or ratio of cation valence to cation radius is used as a measure of acid or base behavior. The role of an acid as a polymer former or oxide ion acceptor and a base as a polymer breaker or oxide ion donor is described. The gaseous environment can determine either an acid or base role for iron. Correlations involve concentrations in mole percentages.

Copyright © 1979 by ASME
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