Survey of the effects of coal chlorine levels on fireside corrosion in pulverized coal-fired boilers
- Electric Power Research Inst., Palo Alto, CA (United States)
- Illinois Clean Coal Inst., Carterville, IL (United States). Coal Development Office
There is concern in the electric utility industry about the possible impact on boiler performance of burning coals from the Illinois Basin, which may contain chlorine levels up to 0.6 percent. This concern is reflected in the suggested coal chlorine limits used by boiler manufacturers, and in the application of coal chlorine content limitations in coal supply contracts. The basis for such limitations apparently is rooted in an awareness of problems reported by the Central Electricity Generating Board in the U.K., which routinely utilized coals with chlorine contents ranging up to 0.6--0.7 percent, rather than in well-documented experience from burning Illinois Basin coals. The objective of this survey was to gather data to clarify the effects, if any, of the chlorine content of coal on the type and occurrence of maintenance problems on the fireside circuit of US boilers. The results showed that a significant tonnage of Illinois Basin coal is burned each year, some 60 {times} 10{sup 6} tons in 1991, and at least 15 US utilities have experience in its use. The extent that problems were experienced is discussed in terms of the chlorine content of the fuel actually fed to the boiler, boiler type, and operating conditions. Plans for research to better define the interactions among chlorine, sulfur, and alkali metals in coal on its corrosivity in boilers are outlined.
- OSTI ID:
- 43201
- Report Number(s):
- CONF-940930-; TRN: IM9521%%367
- Resource Relation:
- Conference: 11. annual international Pittsburgh coal conference: coal, energy and the environment, Pittsburgh, PA (United States), 12-16 Sep 1994; Other Information: PBD: 1994; Related Information: Is Part Of Eleventh annual international Pittsburgh coal conference proceedings: Volume 1; Chiang, S.H. [ed.]; PB: 828 p.
- Country of Publication:
- United States
- Language:
- English
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