Research on the Inhibitory Effect of Hydrated Phase Change Materials on Spontaneous Combustion in Coal

Wu, Fanghua; Shi, Shiliang; Shao, Shuzhen; Lu, Yi; Gu, Wangxin; Wang, Youliang; Yuan, Xindi

doi:10.3390/fire7030095

Open AccessArticle

Research on the Inhibitory Effect of Hydrated Phase Change Materials on Spontaneous Combustion in Coal

by

Fanghua Wu

,

Shiliang Shi

^*,

Shuzhen Shao

,

Yi Lu

,

Wangxin Gu

,

Youliang Wang

and

Xindi Yuan

School of Resource, Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, China

^*

Author to whom correspondence should be addressed.

Fire 2024, 7(3), 95; https://doi.org/10.3390/fire7030095

Submission received: 15 January 2024 / Revised: 12 February 2024 / Accepted: 15 February 2024 / Published: 17 March 2024

(This article belongs to the Special Issue Prevention and Control of Mine Fire)

Download

Browse Figures

Versions Notes

Abstract

In order to study the effect of hydrated phase change materials on the suppression of spontaneous combustion in coal, a thermogravimetric experiment and a reaction activation energy analysis experiment were conducted to explore the changes in the 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 indicated that hydrated phase change materials increased the characteristic temperature point of the coal samples and had effective inhibitory effects on different stages of the 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 1.138–23.048 KJ·mol⁻¹ and the mass loss was reduced by 1.6%–9.3% after inhibition of the coal samples, indicating that the oxidation rate of the various coal samples was slowed down and, thus, spontaneous combustion can be suppressed through the use of hydrated phase change materials. At the same time, this material reduced the combustibility indices of meagre coal and lean coal, as well as the comprehensive combustion indices of long-flame coal and gas coal.

Keywords: hydrated phase change materials; coal spontaneous combustion; thermogravimetric; activating energy; inhibitory effect; combustibility index; comprehensive combustion index

Share and Cite

MDPI and ACS Style

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. https://doi.org/10.3390/fire7030095

AMA Style

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(3):95. https://doi.org/10.3390/fire7030095

Chicago/Turabian Style

Wu, Fanghua, Shiliang Shi, Shuzhen Shao, Yi Lu, Wangxin Gu, Youliang Wang, and Xindi Yuan. 2024. "Research on the Inhibitory Effect of Hydrated Phase Change Materials on Spontaneous Combustion in Coal" Fire 7, no. 3: 95. https://doi.org/10.3390/fire7030095

APA Style

Wu, F., Shi, S., Shao, S., Lu, Y., Gu, W., Wang, Y., & Yuan, X. (2024). Research on the Inhibitory Effect of Hydrated Phase Change Materials on Spontaneous Combustion in Coal. Fire, 7(3), 95. https://doi.org/10.3390/fire7030095

Article Menu

Research on the Inhibitory Effect of Hydrated Phase Change Materials on Spontaneous Combustion in Coal

Abstract

Share and Cite

Article Metrics

Article Access Statistics

Further Information

Guidelines

MDPI Initiatives

Follow MDPI