Coal pyrolysis: Thermogravimetric study and kinetic analysis

This research comprises the coal pyrolysis by thermogravimetry (TG/DTG). During the pyrolysis of the coal samples studied, gradual and continuous weight loss over the entire temperature range was observed. The weight loss below 210degreesC is related to the removal of moisture. The subsequent pyrolysis process as revealed by the corresponding DTG peak that is related to primary devolatilization, during which carbon, hydrogen, and oxygen compounds are released. Arrhenius-type kinetic model was used to determine the kinetic parameters and the results are discussed.


Effect of particle size on coal pyrolysis
Kök, Mustafa Verşan; Karacan, Ozgen; Hicyilmaz, Cahit (1998-01-01)
This research comprises the effect of particle size on coal pyrolysis by thermogravimetry (TG/DTG). All the experiments were conducted at non-isothermal heating conditions with a heating rate of 10 degrees C min(-1). in the temperature range of 20-600 degrees C, under nitrogen atmosphere. Different fractions of Cayirhan coal coal showed differences in TG/DTG curves, peak temperatures and residue values. The Arrhenius model is applied to determine the kinetic parameters from TG/DTG curves.
Gasification profiles of Thrace region coal under CO2, N-2/CO2, and N-2/DRY air environments
Kök, Mustafa Verşan (2019-04-01)
( )This research aimed at understanding the gasification behaviour of Thrace-Saray region coal by conducting several thermogravimetry analysis (TGA) experiments. The effects of heating rate (20-50 degrees C/min), final gasification temperature (750-950 degrees C), and isothermal gasification duration (60-120 min) on the overall gasification processes of as received and washed and dried coal samples were determined under CO2,N-2/CO2, and N-2/dry air environments. Three main reaction regions were observed in ...
Comparative kinetic analysis of raw and cleaned coals
Ozbas, K.E.; Kök, Mustafa Verşan; Hicyilmaz, C. (2002-09-24)
In this research, thermogravimetry (TG/DTG) was used to determine the kinetic analysis of different coals and effect of cleaning process on kinetic parameters of raw and cleaned coal samples from Soma, Tuncbilek and Afsin Elbistan regions. Kinetic parameters of the samples were determined using Arrhenius and Coats and Redfern kinetic models and the results are discussed.
Thermal characterization and gasification kinetics of thrace-saray region coal
Yıldırım, Betül; Kök, Mustafa Verşan; Department of Petroleum and Natural Gas Engineering (2015)
In this thesis being up as-received and washed and dried, two different coal samples from Saray-Edirkoy field were experimented in order to determine effects of different variables as coal type, heating rate, gas flow rate, isothermal duration, gasifying medium, and final gasification temperature, on isothermal gasification profiles of the coal samples. In the scope of this study, heating rate was changed in the range of 20-50oC/min as 20, 30, 40 and 50oC/min whereas two different gas flow rate values as 60...
Comparative Pyrolysis and Combustion Kinetics of Oil Shales
Kök, Mustafa Verşan (2000-02-01)
In this research, thermal characteristics and kinetic parameters of eight Turkish oil shale samples were determined by thermogravimetry (TG/DTG) at non-isothermal heating conditions both for pyrolysis and combustion processes. A general computer program was developed and the methods are compared with regard to their accuracy and the ease of interpretation of the kinetics of thermal decomposition. Activation energies of the samples were determined by five different methods and the results are discussed.
Citation Formats
M. V. Kök, “Coal pyrolysis: Thermogravimetric study and kinetic analysis,” ENERGY SOURCES, pp. 1007–1014, 2003, Accessed: 00, 2020. [Online]. Available: