Assessing the self-heating behaviour of Callide coal using a 2-metre column

Beamish, B. B., Lau, A. G., Moodie, A. L. and Vallance, T. A. (2002) Assessing the self-heating behaviour of Callide coal using a 2-metre column. Journal of Loss Prevention In The Process Industries, 15 5: 385-390.


Author Beamish, B. B.
Lau, A. G.
Moodie, A. L.
Vallance, T. A.
Title Assessing the self-heating behaviour of Callide coal using a 2-metre column
Journal name Journal of Loss Prevention In The Process Industries   Check publisher's open access policy
Publication date 2002
Sub-type Article
DOI 10.1016/S0950-4230(02)00020-7
Volume number 15
Issue number 5
ISSN 0950-4230
Start page 385
End page 390
Total pages 6
Place of publication Amsterdam
Publisher Elsevier Science Ltd
Collection year 2002
Language eng
Subject C1
290701 Mining Engineering
650202 Coal
Abstract A 2-m, adiabatic column has been successfully refurbished and recommissioned for coal self-heating research at The University of Queensland. Subbituminous coal from the Callide Coalfields reached thermal runaway in just under 19 days from a starting temperature of 20-22 degreesC. The coal was loaded as two layers, with an R-70 index of 2.73 degreesC h(-1) and 5.90 degreesC h(-1) for the upper layer and lower layer respectively. Initially, a hotspot developed in the upper layer between 120 and 140 cm from the air inlet due to moisture adsorption. After 7 days, self-heating in the lower half of the column began to take over, consistent with the higher R-70 index of this coal. The location of the final hotspot was approximately 60 cm from the air inlet. Further tests on Australian coals, with the column, will enable a better understanding of coal self-heating under conditions closely resembling mining, transport and storage of coal. The results from the column will also provide industry with the information needed to manage the coal self-heating hazard. (C) 2002 Elsevier Science Ltd. All rights reserved.
Keyword Engineering, Chemical
Self-heating
Subbituminous Coal
Adiabatic Testing
Spontaneous-combustion
Q-Index Code C1

 
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