THERMAL REACTIVITIES OF SOME TURKISH LIGNITES
作者:
Sabriye Piskin,
Sevil Unal,
Abdulkadir Kuyulu,
Salih Dinçer,
期刊:
Fuel Science and Technology International
(Taylor Available online 1992)
卷期:
Volume 10,
issue 2
页码: 243-266
ISSN:0884-3759
年代: 1992
DOI:10.1080/08843759208915989
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
A DTA study has been made to investigate the thermal reactivities of five Turkish lignites (Elbistan, Ilgin, Karliova, Xangal, Yatagan) in an air atmosphere. The coal samples exhibited thermal reactivity at temperatures starting from 20 °C and continuing up to 671 °C. Endothermic peaks were observed at the lower end of the temperature range, the highest endothermic peak temperature being 146°C for Elbistan lignite. Exothermic peaks appeared at around 260, 360 and 600 °C. These temperatures are considered to signify the release and combustion of single benzene ring structures and combustion of condensed aromatic rings respectively. Corresponding stages are observed in the TGA traces. After correcting for differences in methodology, the overall heat effects measured by DTA are within greater than 90% of the calorific values of the coal samples determined by bomb calorimetry.
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