Wu, F.; Shi, S.; Shao, S.; Lu, Y.; Gu, W.; Wang, Y.; Yuan, X. Research on the Inhibitory Effect of Hydrated Phase Change Materials on Spontaneous Combustion in Coal. Fire2024, 7, 95.
Wu, F.; Shi, S.; Shao, S.; Lu, Y.; Gu, W.; Wang, Y.; Yuan, X. Research on the Inhibitory Effect of Hydrated Phase Change Materials on Spontaneous Combustion in Coal. Fire 2024, 7, 95.
Wu, F.; Shi, S.; Shao, S.; Lu, Y.; Gu, W.; Wang, Y.; Yuan, X. Research on the Inhibitory Effect of Hydrated Phase Change Materials on Spontaneous Combustion in Coal. Fire2024, 7, 95.
Wu, F.; Shi, S.; Shao, S.; Lu, Y.; Gu, W.; Wang, Y.; Yuan, X. Research on the Inhibitory Effect of Hydrated Phase Change Materials on Spontaneous Combustion in Coal. Fire 2024, 7, 95.
Abstract
In order to the effect of hydrated phase change materials on suppressing coal spontaneous combustion, the thermogravimetric experiment and reaction activation energy analysis experiment were used to explore the changes of combustion characteristic, parameters characteristic temperature and activating energy of gas coal, long flame coal, meagre coal, and lean coal before and after adding hydrated phase change materials. The research results showed that hydrated phase change materials increased the coal samples’characteristic temperature point and have effective inhibitory effects on different stages of oxidation process.However, the effect was best at low temperatures, as hydrated phase change materials undergo phase change and absorb heat when heated at low temperatures, isolating coal from contact with oxygen. The activating energy increased by 1.138 KJmol-1～23.048 KJmol-1 and the mass loss reduced by 1.6%～9.3% after the inhibition of the coal sample,indicating that the oxidation rate of various coal samples can be slowed down and the spontaneous combustion can be suppressed by using hydrated phase change materials.At the same time, this material can also reduce the combustibility index of meagre coal and lean coal, as well as the comprehensive combustion index and maximum loss rate of long flame coal and gas coal.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
