Study on Spontaneous Combustion Tendency of Coals with Different Metamorphic Grade at Low Moisture Content Based on TPO-DSC
| Autor: | Gang Wang, Jiuyuan Fan, Jiuling Zhang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Control and Optimization
Materials science 020209 energy Metamorphic rock Energy Engineering and Power Technology 02 engineering and technology lcsh:Technology complex mixtures Differential scanning calorimetry 020401 chemical engineering Coal storage 0202 electrical engineering electronic engineering information engineering otorhinolaryngologic diseases low moisture content Coal 0204 chemical engineering Electrical and Electronic Engineering energy_fuel_technology Engineering (miscellaneous) Water content Spontaneous combustion Moisture lcsh:T Renewable Energy Sustainability and the Environment business.industry Metallurgy Anthracite technology industry and agriculture temperature-programmed oxidation respiratory tract diseases metamorphic grade spontaneous combustion tendency differential scanning calorimetry business Energy (miscellaneous) |
| Zdroj: | Energies Volume 12 Issue 20 Energies, Vol 12, Iss 20, p 3890 (2019) |
| ISSN: | 1996-1073 |
| DOI: | 10.3390/en12203890 |
| Popis: | In the environments of various open coal storage sites, mining-affected coalbeds, and goafs, etc., some coal bodies are often affected by external environmental factors. They are highly prone to spontaneous combustion in low moisture content (&le 8%). In order to examine the effect of low moisture content on the spontaneous combustion tendency of coals with different metamorphic grade, we conducted a temperature programmed oxidation (TPO) experiment and differential scanning calorimetry (DSC) experiment to study the spontaneous combustion characteristics of coals with different metamorphic grade at four different low moisture contents. The change laws of the characteristic parameters of four different metamorphic grade coals at four different low moisture contents were comparatively analyzed. The experimental results indicate that: (1) Compared other low moisture content, anthracite and fat coal at a low moisture content of 1.2 % show a stronger tendency for spontaneous combustion, and long flame coal and lignite at a low moisture content of 3.4% and 5.6% are more prone to spontaneous combustion. (2) Four different metamorphic grade coals at a low moisture content of 7.8% are less prone to spontaneous combustion. |
| Databáze: | OpenAIRE |
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