Experiment and Study of Carbon Monoxide Adsorbed in Coal Seam of Donghuantuo Coal Mine
|School||Hebei Institute of Technology|
|Keywords||Inertinite Adsorption amount Forecast Sign gas Spontaneous Combustion|
The article discusses the sources and adsorption of CO seam Donghuantuo role Kailuan Donghuantuo mine geology and found CO . According to the actual situation of the coal mine existing data and Donghuantuo hosting Donghuantuo coal mine CO three basic assumptions . By analysis of geological Donghuantuo conditions CO discovery well site drilling in the CO concentration measured exclude two of assumptions , and to conclude that the generation of CO coal metamorphism . To this end , the seam in the the main mining ore Donghuantuo layer 8,9,11,12 take eight typical coal samples , each taken in linnancang Zhaogezhuang mine the two Donghuantuo Mining coal similar degree of metamorphism of coal as a comparison , the coal industry analysis , microscopic coal and rock analysis , elemental analysis and CO adsorption experiments . Based on the experimental results , the comparative analysis of the microstructure of coal and rock content difference between the kind of coal , to arrive at the Donghuantuo coal mine occurrence of CO , that coal metamorphic process , the the coal molecular side chains and functional groups of the gradual decomposition fracture, due to the falling off of the side chain in the reconstruction and the reconstruction process of the nuclear polycondensation, the molecular structure of the side chain decomposition caused , generates a large amount of CO , is a large number of adsorption ability seam adsorption down , and the establishment of the adsorption amount and inertinite vitrinite reflectance analysis of coal between the various indicators mathematical model . Coal seam Donghuantuo presence of CO but did not ignite the phenomenon of a preliminary study , combined with the coal spontaneous combustion theory , selected indicators of spontaneous combustion gases of coal mine low temperatures forecast Donghuantuo sign gas low temperature oxidation stage the mathematical model between the temperature of the spontaneous combustion of coal oxidation and spontaneous combustion forecasting system , and the additional requirements of the system . Coal seam Donghuantuo occurrence of new insights into the mechanism of CO Seam Spontaneous Combustion accurate forecast for the coal mine Donghuantuo provide a basis for analysis of similar mines CO Occurrence Mechanism and Prediction of Spontaneous Combustion of great reference value .