An investigation into the thermal behavior of coals

The thermal behavior of 4 coal samples was investigated using simultaneous thermogravimetry (TG/DTG) and differential thermal analysis (DTA) methods. Upon heating the coals in an inert atmosphere up to 800degreesC, 31.44-43.82% weight loss occurs. The 2 temperature regions of increased chemical reactivity are evident in the coal samples studied Two different models determined kinetic analysis of the samples, and the results are discussed.
Energy Sources


The effect of lime addition on the combustion properties and sulfur contents of three different coals
Ozbas, Kazim Esber; Hiçyilmaz, Cahit; Kök, Mustafa Verşan (2002-01-01)
In this research, combustion characterization of 3 different coals of Turkey, from the Soma, Tuncbilek, and Afsin Elbistan regions, were investigated with thermal analysis techniques such as differential scanning calorimetry (DSC) and thermogravimetry (TG/DTG). Lime was added to these coals in concentrations of 3, 7, and 10% by weight to investigate the change in combustible sulfur content and sulfur in ash. It was observed that lime has a positive effect on sulfur emission. Kinetic analysis was also perfor...
Recent developments in the application of thermal analysis techniques in fossil fuels
Kök, Mustafa Verşan (2008-03-01)
In this review, application of thermal analysis techniques (differential scanning calorimetry, thermogravimetry, differential thermal analysis, etc.) for fossil fuel characterization and kinetics are reviewed between 2001 and 2006. The results presented clearly showed that thermal analysis applications are well-established techniques used in fossil fuel research area.
An investigation into the combustion curves of lignites
Kök, Mustafa Verşan (2001-01-01)
In this research, combustion curves of seventeen lignite samples from the Thrace basin (Turkey) were analysed using thermal analysis (TG/DTG) techniques. A comparative analysis was performed considering the relationship between peak temperature, burn-out temperature, moisture content, ash, volatile matter, fixed carbon and calorific values of the samples studied and the results are discussed.
Simultaneous thermogravimetry-calorimetry study on the combustion of coal samples: Effect of heating rate
Kök, Mustafa Verşan (2012-01-01)
Combustion characteristics of two different coal samples were investigated using power compensating type differential scanning calorimeter (DSC) and thermogravimetry (TG-DTG) at different heating rates (5, 10 and 15 degrees C/min). Differential scanning calorimeter (DSC) and thermogravimetry (TG-DTG) curves revealed two main reaction regions at each heating rate studied. Reaction regions, peak and burn-out temperatures, weight loss and heat of reactions of the samples were determined. Kinetic parameters of ...
Non-isothermal DSC and TG/DTG analysis of the combustion of silopi asphaltites
Kök, Mustafa Verşan (2007-06-01)
In this research, non-isothermal combustion and kinetics of Silopi (Turkey) asphaltite samples were investigated by differential scanning calorimetry (DSC) and thermogravimetry (TG/DTG). A sample size of 10 mg, heating rates of 5, 10, 15 and 200C min(-1) were used in the temperature range of 20-600 degrees C, under air atmosphere. Two reaction regions were observed in DSC curves. The first region is due to the evaporation of moisture in asphaltite sample whereas, release of volatile matter and burning of ca...
Citation Formats
M. V. Kök, “An investigation into the thermal behavior of coals,” Energy Sources, pp. 899–905, 2002, Accessed: 00, 2020. [Online]. Available: