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煤层中的沼气呈两种状态:一种为吸附状态(超过90%),而另一种为游离状态。通常其含量为:X=X_c+X_(CB)(1)式中X_C 和 X_(CB)——分别为吸附和游离瓦斯的数量,m~3/t 大气压常温下,瓦斯压力为 P 时,煤所吸附的沼气数量可用莱克缪尔方程表示:
Biogas in the coal seam is in two states: one adsorbed (over 90%) and the other free. Usually, the content is: X = X_c + X_ (CB) (1) where X_C and X_ (CB) - are the quantities of adsorption and dissociation of gas respectively. When the gas pressure is P at m ~ The amount of methane adsorbed by coal can be expressed by the Lake Muir equation: