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Environmental temperature on the particulate coal gas desorption experiments on the effect of the law

Author: LiHong
Tutor: WangZhaoFeng
School: Henan Polytechnic University
Course: Mining Engineering
Keywords: Temperature Coal particles Gas Desorption law Analog Test Impact Factor
CLC: TD712
Type: Master's thesis
Year: 2011
Downloads: 117
Quote: 2
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Abstract


In this paper, simulations and theoretical analysis method of combining the different adsorption equilibrium pressure , different desorption temperature conditions Jincheng Colliery No. 3 coal seam gas desorption process was simulated tests. Study effects of temperature and pressure on the gas desorption equilibrium volume and velocity of desorption ; obtained adsorption equilibrium at the same pressure conditions , the temperature of the coal particles of different desorption gas desorption , gas desorption velocity of law ; same desorption temperature , different adsorption equilibrium pressure on the particle coal gas desorption , gas desorption were studied between speed and, ultimately, different desorption temperature gas loss reasonably calculated. This system simulates the desorption of coal samples at different temperatures (20 ℃, 30 ℃, 40 ℃, 50 ℃ and 60 ℃), different adsorption equilibrium pressure (0.5MPa, 0.74MPa, 1.5MPa, 2.5MPa and 3MPa) under the conditions of the same type of failure , the same size (1 ~ 3mm) coal gas desorption process , the use of data analysis software origin75 the regression of the experimental data analysis and processing, the results show that: with the desorption temperature, the particulate coal in the same period the cumulative amount of gas desorption and gas desorption increment ΔQ are increased accordingly , at each time point gas desorption speed increases with increasing temperature . Through the empirical formula deduced from the same time period the cumulative amount of gas desorption gas desorption experiments cumulative amount of comparative analysis and regression calculated the desorption temperature at different speeds when the gas desorption temperature coefficient , determined Barrel -style in the initial desorption within 5 ~ 15min error of only 11.76 to 19.9 %, and the minimum error compared with other empirical formulas , tables Mingbaleier style is to describe the coal particles at different initial gas desorption temperatures desorption stage optimal desorption desorption regular formula. Based on the particle temperature coal effect gas desorption studies law , comparative analysis of the temperature effect on the gas loss and the establishment of different gas desorption temperature loss projections reasonable formula , through laboratory and field verification , the impact factor can better describe the different temperatures of gas desorption coal particles law , improve the coal seam gas content measurement accuracy of the results .

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CLC: > Industrial Technology > Mining Engineering > Mine safety and labor protection > Mine atmosphere > Mine Gas
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