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Thermal behaviour of low-rank Indian coal fines agglomerated with an organic binder

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Abstract

The combustion kinetic parameters of the carbonized agglomerated coal fines (ACFs) were determined by thermogravimetric analysis under oxy-non-isothermal conditions for planning, designing, and operating the related combustion systems at an industrial scale. Friedman and Flynn–Wall–Ozawa methods were applied to determine the activation energies (E) and pre-exponential factors (A) of the thermal decomposition of ACFs. The multivariate nonlinear regression analyses were performed to find out the formal mechanisms, kinetic model, and the corresponding kinetic triplets. The results revealed the n-dim. Avrami–Erofeev (An) and nth-order (Fn) mechanism responsible for the decomposition of the carbonized ACFs. The activation energy of the combustion of carbonized ACFs is found to be in the range of 132.75–191.57 kJ mol−1.

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Acknowledgements

The authors are very much thankful to the CSIR, New Delhi, for funding (MLP-6000-WP-III). Many thanks are also given to all the staff of Coal Chemistry pilot plant (CSIR-NEIST) for their assistance during the study. Authors express special thanks to Mr. Priyam Jyoti Bora of Advance Materials Group, CSIR-NEIST, Jorhat, for his assistance in particle size analysis of the samples. Authors also express special appreciations to the editor and reviewers for their constructive comments to improve the paper.

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  1. Polymer Petroleum and Coal Chemistry Group, Materials Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, Assam, 785006, India

    Tonkeswar Das, Bimala P. Baruah & Binoy K. Saikia

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  1. Tonkeswar Das
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  2. Bimala P. Baruah
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  3. Binoy K. Saikia
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Correspondence to Binoy K. Saikia.

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Das, T., Baruah, B.P. & Saikia, B.K. Thermal behaviour of low-rank Indian coal fines agglomerated with an organic binder. J Therm Anal Calorim 126, 435–446 (2016). https://doi.org/10.1007/s10973-016-5564-x

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