Physical and chemical properties of selected Turkish lignites and their pyrolysis and gasification rates determined by thermogravimetric analysis

Date

2007-08-01

Author

Cakal, Gaye O.
Yücel, Hayrettin
Guruz, A. Guniz

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Pyrolysis and CO(2)-gasification behavior of lignites representing four different deposits in Turkey were investigated by Thermogravimetric Analysis (TGA) in the temperature range from 750 degrees C to 1000 degrees C. The rates of pyrolysis and CO(2)-gasification were evaluated from the corresponding TGA profiles. As expected, maximum pyrolysis rates for each coal were shown to be constant with respect to the final carbonization temperature. Lignites used in this study are from the tertiary period, chosen from major coal deposits in Turkey and their carbon contents are in the range of 60-70% (daf) based on ultimate analysis. They have shown different gasification reactivities under similar conditions and the reactivity sequence was found to be temperature dependent.

Subject Keywords

Lignite, CO2-Gasification, Pyrolysis, Reactivity, TGA

URI

https://hdl.handle.net/11511/30762

Collections

Graduate School of Natural and Applied Sciences, Article