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- W4293662095 abstract "• The pore size of coal samples treated with seawater became larger and coal was more prone to spontaneous combustion. • Adding seawater reduced the characteristic temperature and lowered the activation energy. • Friedman method had the highest fitting degree in calculating the activation energy. • Seawater destroyed formation of oxygen-containing functional groups, and promoted formation of oxygen-containing alkali metal structures and aliphatic functional groups. To study the effect of seawater on the oxidation and heat release characteristics of coal, SEM and STA-FTIR experiments were used to study characteristic temperature, kinetic parameters and functional groups of coal samples before and after seawater treatment. Results showed that, after adding seawater, the number of pores and cracks of coal increased. Characteristic temperature T 5 , T 6 , T 7 , T 8 decreased, and C (1:2) had the most significant effect. The activation energy of C (1:2) was lower than that of C (Raw), and Friedman method had the highest fitting degree. The content of oxygen-containing functional groups decreased, and the content of aliphatic functional groups and the structure of oxygen-containing alkali metals increased. The results indicated that adding seawater can promote the coal spontaneous combustion. The research has important practical significance for coal spontaneous combustion prevention in coal storage and transportation process." @default.
- W4293662095 created "2022-08-31" @default.
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- W4293662095 date "2022-10-01" @default.
- W4293662095 modified "2023-10-15" @default.
- W4293662095 title "Study on the effect of different seawater mass ratio on coal spontaneous combustion characteristics" @default.
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- W4293662095 doi "https://doi.org/10.1016/j.tca.2022.179328" @default.
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