Changes in the Distribution of Temperature in a Coal Deposit and the Composition of Gases Emitted during Its Heating and Cooling

Marek Więckowski, Natalia Howaniec, Eugene B. Postnikov, Mirosław Chorążewski and Adam Smoliński
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Marek Więckowski: Department of Mining Aerology, Central Mining Institute, Plac Gwarków 1, 40-166 Katowice, Poland
Natalia Howaniec: Department of Energy Saving and Air Protection, Central Mining Institute, Plac Gwarków 1, 40-166 Katowice, Poland
Eugene B. Postnikov: Department of Theoretical Physics, Kursk State University, Radishchevast., 33, 305000 Kursk, Russia
Mirosław Chorążewski: Institute of Chemistry, Department of Physical Chemistry, University of Silesia in Katowice, Szkolna 9, 40-006 Katowice, Poland
Adam Smoliński: Central Mining Institute, Pl. Gwarków 1, 40-166 Katowice, Poland

Sustainability, 2018, vol. 10, issue 10, 1-23

Abstract: This article presents the results of tests conducted on a measuring system for monitoring changes in the distribution of temperature in a coal deposit during the heating and cooling phases, and their correlation with the analysis of the concentration of gases. The tests were conducted on five samples of hard coal collected in deposits mined in Poland. Measurements of the changes in temperature and changes in gas concentration were conducted from the temperature of 35 to 300 °C, for the heating phase, and from 300 to 35 °C, for the cooling phase. The percentage share of coal of given temperatures was calculated. When comparing the percentage share for the same temperature in the hot spot, for the heating and cooling phase, significant differences in the distribution of the given percentages were observed. Changes in gas concentrations during heating and cooling were analyzed and the dynamics of changes in gas concentrations were determined for the coals tested. Changes in the values of fire hazard indices were analyzed. There were significant differences in the concentration of gases and the values of fire hazard indices between the heating and the cooling phase. The application of different criteria to assess coal during heating and cooling was proposed.

Keywords: coal; coal self-heating; fire hazard (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2018
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:10:y:2018:i:10:p:3587-:d:174350

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