Experimental research on the formation of CO during coal spontaneous combustion under the condition of methane-contained airflow
Abstract：Due to the methane-contained air leakage flow existing in a high gassy goaf, an experimental system on coal sample＇ s oxidation in low temperature under the condition of methane-contained airflow was designed. Model experi- ments simulating spontaneous combustion were carried out according to the gas distributing scheme. The formation of the oxidation products CO was studied. The result shows that the temperature for initial production is suppressed and the amount of products produced decreases with the decrease of oxygen volume fraction or increase of methane volume fraction. When fresh air is used to predict the state of coal spontaneous combustion in high gassy goaf, a delayed pre- diction is caused. Finally, based on the principle of gas-solid chemical reaction kinetics, the variation of reaction rate was analyzed, and the experimental results were reasonably explained.
Keywords：methane-contained airflowvolume fractions of oxygenvolume fractions of methanephysisorptionchemi- sorption
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 1320-1325 )