Test Study on Influence Laws of Temperature upon Coal Gas Adsorption Capacity
YANG Yinlei
CHEN Youqiang
GAO Jianxun
CHEN Wei
Abstract：In order to study the changes of gas adsorption capacity and adsorption rate of coal with the temperature rise under the constant pressure, the coal samples with the particle size from 60 to 80 mesh taken from Anze Coal Mine were selected in the test. The isothermal adsorption lines of the coal samples and the relation curve of the adsorption capacity with time were successively tested at the temperature of 35 ℃, 50 ℃, 65 ℃, 80 ℃ and 105 ℃ and the pressure of 0. 6 MPa. The study showed that with the rise of temperature, the gas absorption capacity of coal decreased, the higher the temperature, the more obvious the trend was, and with the increase of time, the adsorption rate at each temperature gradually decreased. When the adsorption lasted for 200 min, the adsorption rate at each temperature was lower than 0. 005 cm3/(g·min), and then it decreased slowly. In the adsorption process, the higher the temperature, the lower the absorption rate at the same time.
Keywords：coal gas adsorption characteristicsconstant pressureadsorbed gasabsorption rateisothermal adsorption line
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 6-9 )