Distributed Activation Energy Model Parameters of Some Turkish Coals

Abstract

A multi-reaction model based on distributed activation energy has been applied to some Turkish coals. The kinetic parameters of distributed activation energy model were calculated via computer program developed for this purpose. It was observed that the values of mean of activation energy distribution vary between 218 and 248 kJ/mol, and the values of standard deviation of activation energy distribution vary between 32 and 70 kJ/mol. The correlations between kinetic parameters of the distributed activation energy model and certain properties of coal have been investigated.

Keywords:

• distributed activation energy model (DAEM)
• TGA
• thermal decomposition kinetics

Acknowledgments

Analyses of the coals investigated in this study were provided by Prof. Dr. Mahir Arikol from Chemical Engineering Department, Bosphorus University, and by Dr. M. Kemal Urkan from Mechanical Engineering Department, Yildiz Technical University. The authors are grateful to them.

Notes

^a Correlation coefficient between TGA data and DAEM prediction.