Journal
FUEL
Volume 117, Issue -, Pages 218-223Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2013.09.070
Keywords
Chemical inhibitor; Coal spontaneous combustion; Selecting approach; Active functional groups; In situ FTIR
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Funding
- National Natural Science Foundation of China [51134020]
- Shenhua Group Corporation Limited [51134020]
- National Natural Science Foundation of China Youth Science Foundation [51204171]
- Fundamental Research Funds for the Central Universities [2013DXS02]
- Jiangsu Innovation project of Graduate training [CXZZ13_0954]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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Because of the complex structure of coal, selecting an efficient chemical inhibitor to retard or prevent its spontaneous combustion remains a challenging task. In the present work, the distributions and concentrations of functional groups on coal surfaces were analyzed using in situ FTIR. The active functional groups and their oxidation processes were elucidated so as to develop an efficient approach to selecting effective chemical inhibitors. The validity of the experimental approach was demonstrated by measuring various performance metrics for samples with and without a chemical inhibitor, including crossing point temperature (CPT), oxygen consumption, carbon monoxide (CO) emission rates and changes in active functional groups. The results indicate that the chemical inhibitor chosen using the proposed approach effectively slows the oxidation of coal, thereby demonstrating the validity of the selection method. (C) 2013 Elsevier Ltd. All rights reserved.
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