Naturally Occurring High-Chloride Coal and Superheater Corrosion—A Laboratory Study

[+] Author and Article Information
A. L. Plumley, W. R. Roczniak

Combustion Engineering, Inc., Windsor, Conn. 06095

J. Eng. Power 104(4), 874-884 (Oct 01, 1982) (11 pages) doi:10.1115/1.3227358 History: Received July 15, 1981; Online September 28, 2009


DOE Provided funds for C-E to investigate the fireside corrosion potential of commercial boiler tube alloys at elevated temperatures when exposed to the combustion products from a series of coals. The results of the laboratory and field tests were previously reported. In a supplementary phase of the program, C-E tested for the effect of chloride on similar alloys while firing a naturally occurring high chloride Midwestern bituminous coal in the same laboratory furnace. On the basis of exposure in the convection pass at temperatures from 1100–1700°F, Inconel Alloy 690 was found to have very good resistance to corrosion while Incoloy 800H and Tp-310 s. s. were good transitional materials. Poor materials were T-22, 316 s. s., Inconel 617, and Inconel 671.

Copyright © 1982 by ASME
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