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Experimental investigation on spontaneous combustion oxidation characteristics and stages of coal with different metamorphic degrees
- Source :
- Environmental science and pollution research internationalReferences.
- Publication Year :
- 2022
-
Abstract
- Coal spontaneous combustion (CSC) is a major disaster threatening coal mine safety; therefore, the investigation of coal spontaneous combustion and oxidation characteristics has been a hot topic in the long term. In this paper, the experimental temperature programmed system is used to carry out the simulation experiment of coal spontaneous combustion and oxidation of three kinds of coal with different metamorphic degrees under three oxygen concentrations (9%, 15%, 21%). The effects of metamorphic degree and oxygen concentration on coal oxidation characteristics were analyzed, and the variation laws of crossing point temperature, three characteristic point temperature, and apparent activation energy were qualitatively discussed. Finally, coal oxidation reaction stages were evaluated and divided. The results show that the concentrations of CO and C
Details
- ISSN :
- 16147499
- Database :
- OpenAIRE
- Journal :
- Environmental science and pollution research internationalReferences
- Accession number :
- edsair.doi.dedup.....ecd367ebfbb9fad7b1a72d19a9cfe21a