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Thermogravimetric studies in prediction of coal behaviour during coal liquefaction

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Abstract

Different chemical and petrographical methods were earlier proposed for the prediction of coal liquefaction. Thermogravimetric studies (DTG, TG) of coals were now performed and the same coals were liquefied.

A good correlation was found between ΔA max (the main decomposition area during the maximum rate of decomposition in DTG) andSk (the degree of conversion of organic substances during coal liquefaction).

ΔA max measurement may be a good, quick and quite reliable method for the prediction of coal liquefaction, which needs to be standardized.

Zusammenfassung

Zur Prognose der Kohleverflüssigung wurden bereits verschiedene chemische und petrographische Methoden vorgeschlagen. In dieser Arbeit werden thermogravimetrische Untersuchungen (DTG, TG) an Kohlen durchgeführt und dieselben Kohlen verflüssigt.

Zwischen ΔA max (Fläche der Hauptzersetzung bei der maximalen Zersetzungsgeschwindigkeit in der DTG) undSk (Konversionsrate organischer Substanzen bei der Kohleverflüssigung) wurde eine gute Korrelation gefunden.

Die Messung von ΔA max kann eine gute, schnelle und recht zuverlässige Methode zur Prognose von Kohleverflüssigung sein und muß standardisiert werden.

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Authors and Affiliations

  1. Institute of Applied Geology, Faculty of Mining and Geology, Silesian Technical University, Ul-Katowicka 2, 44-101, Gliwice, Poland

    W. Gabzdyl & A. K. Varma

  2. Department of Geology Postgraduate Centre, Pin-833202, Chaibasa, Singhbhum, Bihar, India

    A. K. Varma

Authors
  1. W. Gabzdyl
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  2. A. K. Varma
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Gabzdyl, W., Varma, A.K. Thermogravimetric studies in prediction of coal behaviour during coal liquefaction. Journal of Thermal Analysis 39, 31–40 (1993). https://doi.org/10.1007/BF02235444

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