Jiangling Liu

Publication Date

12-1994

Advisor(s) - Committee Chair

Wei-Ping Pan, M.- I.M. Chou, John Riley

Comments

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Degree Program

Department of Chemistry

Degree Type

Master of Science

Abstract

The chlorine content in Illinois Basin coals has been a concern for potential end users of these coals. This concern, regardless of whether or not chlorine in Illinois coals causes corrosion, has a great impact on the coal market. Previous research has suggested that some high-chlorine Illinois Basin coals do not cause boiler corrosion while some high-chlorine British coals do. Providing concrete scientific data to explain the differences in corrosivity of the two types of coal and supporting the premise that high chlorine Illinois coals do not cause corrosion will help alleviate market concerns and increase usage of these Illinois Basin coals. The differences in corrosivity in coals may be due to the coal properties or to the parameters of boilers in which they were burned.

This study was carried out in order to gain a better understanding why the high-chlorine British coals cause boiler corrosion, while the high-chlorine Illinois Basin coals do not. Four British coals and six Illinois coals were used in this study. The behavior of chlorine in coals under combustion and pyrolysis conditions was examined. The evolution characteristics of chlorine-containing compounds in coals were determined by combined thermogravimetry/fourier transform infrared spectroscopy (TG/FTIR) and thermo-gravimetry/ion chromatography (TG/IC) techniques.

Disciplines

Chemistry | Physical Sciences and Mathematics

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