Journal
BIORESOURCE TECHNOLOGY
Volume 214, Issue -, Pages 396-403Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2016.04.125
Keywords
Coal gangue; Combustion; Interaction; Pine sawdust; Thermogravimetric analysis
Funding
- Australia Research Council under the ARC Linkage Projects Scheme [ARC LP100200135]
- Provincial Key Scientific Research Projects Coal-based Low-Carbon Energy of Shanxi Province [MD2014-03]
- Significant Projects of Shanxi Province [20131101017]
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The interactions between coal gangue and pine sawdust during the combustion process were studied using thermogravimetric analysis. The effect of the blending ratio, oxygen concentration and heating rate on the weight loss (TG) and differential thermogravimetric (TGA) profiles was examined. The TG and DTG curves of the blends were not additives of those of the individual materials, suggesting that interactions between coal gangue and pine sawdust had occurred during the combustion, especially in the temperature range of 400-600 degrees C. Kinetic analysis confirmed that the combustion of coal gangue, pine sawdust and their blends was chemical reaction controlled. Further analysis revealed that the interactions between coal gangue and pine sawdust were primarily due to thermal effects rather than structural changes, with the thermal inertia of coal gangue dominating over the behaviour of the blends. The interactions decreased with decreasing the coal gangue ratio in the blend, oxygen concentration and heating rate. (C) 2016 Elsevier Ltd. All rights reserved.
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