Modelling and Experimental Research of Spontaneous Combustion of Coal

Abstract:

Spontaneous combustion of coal is an important problem in mining and storage, in terms of both safety and economics. The heat of the reaction accumulates and the reaction becomes progressively faster and thermal runaway may take place to the point of ignition. A detailed computer model has been developed to simulate a bulk-scale, one-dimensional test column. A column is used in this laboratory to conduct a practical test capable of providing reliable data on coal self-heating. Under the specific conditions considered in this study, it is shown that a subbituminous coal can reach thermal runaway in 4.5 days. The results obtained in this study indicate that there is a definite need to consider the influence of coal moisture on spontaneous combustion.

• Periodical: Advanced Materials Research (Volumes 634-638)
• Pages: 3665-3669
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.634-638.3665
• Online since: January 2013
• Authors: Meng Jiang, Wei Li
• Keywords: Coal Spontaneous Combustion, Experimental Simulation, High Temperature Dot, Moisture Transfer

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