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A thermal analysis study of the combustion characteristics of Victorian brown coals

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Abstract

Simultaneous TG, DTA techniques have been applied to investigate the combustion characteristics of Victorian brown coal derived from different coal fields and including various lithotypes. TG and DTA profiles of the entire combustion process were obtained to provide a set of parameters which characterize the oxidation potential of these coal samples. These parameters can also be used to predict the combustion performance of pulverized coal in industrial furnaces. The area of the major DTA combustion peak is closely related to the heat released during the combustion process and therefore provides a means of determining the specific energy of the coal. Different lithotypes are also characterized by their corresponding TG and DTA burning profiles.

Zusammenfassung

Verschiedene TG- und DTA-Techniken wurden zur Untersuchung der Verbrennungscharakteristik von Braunkohle aus Viktoria angewendet, die von verschieden Kohlefeldern stammt und verschiedene Hauptstreifenarten besitzt. Die TG- und DTA-Profile des gesamten Verbrennungsvorganges wurden ermittelt, um einen Satz von Parametern zur Charakterisierung des Oxydationspotentiales der Kohleproben zu erhalten. Diese Parameter können auch zur Vorhersage des Verbrennungsverhaltens von Kohlestaub in Industrieöfen benutzt werden. die Fläche unter dem DTA-Hauptverbrennungspeak steht in enger Beziehung zu der während des Verbrennungsvorganges freigesetzten Wärme und bietet somit ein Mittel zur Bestimmung der spezifischen Energie der Kohle. Auch die verschiedenen Hauptstreifenarten werden durch ihre entsprechenden TG- und DTA-Verbrennungsprofile charakterisiert.

Резюме

Для изучения характе ристик сгорания викторианского буро го угля различных литотипов и месторож дения был использова н совмещенный метод ТГ и ДТА. Полученные кривые ТГ и ДТА всего п роцесса сгорания поз волили получить набор парам етров, характеризующих оки слительный потенциа л исследованных образ цов угля. Полученные параметры могут быть также использованы д ля определения характе ристик гореня распыл енного угля в промышленных п ечах. Плошадь главног о ДТА пика горения тесно связан а с теплотой, выделяющейся в проце ссе горения, и поэтому может быть использована для опр еделения удельной энергии угл я. Различные литотипы угля также охарактеризованы со ответствующими ТГ и ДТА кривыми сгора ния.

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Authors and Affiliations

  1. Department of Chemistry, La Trobe University, 3083, Bundoora, Victoria, Australia

    S. Ma, J. O. Hill & S. Heng

  2. Research Facility, Gippsland Institute of Advanced Education, Coal Corporation of Victoria, 3842, Churchill, Victoria, Australia

    S. Heng

Authors
  1. S. Ma
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  2. J. O. Hill
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  3. S. Heng
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Ma, S., Hill, J.O. & Heng, S. A thermal analysis study of the combustion characteristics of Victorian brown coals. Journal of Thermal Analysis 35, 1985–1996 (1989). https://doi.org/10.1007/BF01911681

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  • DOI: https://doi.org/10.1007/BF01911681

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