Experimental Study of Coal Dust Cloud Minimum Ignition Temperature
DENG Jun, XIE Changchun, WANG Qiuhong, QU Jiao
Key Laboratory of Western Mine Exploitation and Hazard Prevention of Ministry of Education, School of Energy, Xi'an University of Science and Technology, Xi'an 710054, China
Abstract：Using the device for the HY16429 dust cloud minimum ignition temperature experiment, the minimum ignition temperatures for different kinds of coal dust clouds and different particle sizes are measured. The following results are obtained: The coal dust cloud minimum ignition temperature for a given kind of coal decreases with the decrease of the particle size; For different kinds of coal and with the coal dust particle size ≥250 μm, the temperature for the coal dust clouds to generate sparks is not very much affected by the volatile content, and for the different kinds of coal, that temperature takes a value close to each other; when the coal dust particle size is small, the coal dust cloud minimum ignition temperature is reduced with the increase of the content of volatile content. Through analyzing the received coal dust cloud minimum ignition temperature characteristics, their relationship with the characteristics of coal dust and volatile is obtained.
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2014, Vol. 32 
