Study on Influence of Coal Sample Mass upon Generation Law of Index Gases for Coal Spontaneous Combustion
YU Jian
Abstract：Programmed temperature-rise oxidation tests on coal samples in different mass were carried out with a complex test system of coal spontaneous combustion, and research was made on the variation of initial temperature for the generation of index gases of coal sample spontaneous combustion. The results showed that the larger the mass of coal sample, the lower the temperature for the generation of index gases. The research on the temperature change at the cross point indicated that the coal sample mass of 5 g and 20 g for index gas analysis was more appropriate. Differential spectrum analysis was conducted on the coal samples in different mass with an infrared spectrometer, research was made on the changes of active groups in coal samples, and the research indicated that the smaller the mass of coal samples, the greater the change of the active groups in coal samples, so it was advantageous to the generation of the index gases;but the smaller the mass of coal samples, the less the gas generation at low temperature, so it was difficult to be detected. Finally, it obtained through the experiments that the coal sample mass of 20 g was the best experimental conditions for the index gases.
Keywords：mass of coal samplespontaneous combustion of coalindex gastemperature at cross pointinfrared analysis
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 4-6,10 )