摘要
为了研究煤体在不同注水压力下的解吸吸附规律,利用自行改装研制的高压注水煤层气吸附解吸平台,研究含煤瓦斯在不同注水压力下的解吸特性。结果表明:在不同吸附平衡压力下,煤样的解吸率与吸附平衡压力成正比;在水平衡状态下,随着注水压力的增加,0.5 MPa比0.25 MPa的解吸率提升更加明显;随着注水压力倍数的增加,煤样解吸率的整体变化呈减小趋势,在高倍数压力下,解吸曲线基本重合,且抑制率在慢慢减小;随着注水压力的增加,煤样的解吸率逐渐减小,其解吸比值接近40∶25∶16∶13,减小幅度逐渐减弱。
In order to study on the desorption and adsorption of coal under different water injection pressure, the desorption characteristics of coal containing gas under different water injection pressures were studied by using the self-developed high-pressure water injection coal-bed methane adsorption desorption platform. The results show that the analysis rate of coal samples is proportional to the pressure of adsorption equilibrium under different adsorption equilibrium pressure. In the state of water balance, with the increase of water injection pressure, the increase of 0.5 MPa is more obvious than that of 0.25 MPa. With the increase of water injection pressure, the overall change trend of coal sample resolution rate decreases. Under high pressure, the desorption curve basically coincides, and the inhibition rate slowly decreases. With the increase of water injection pressure,the desorption rate of coal samples decreases gradually,and the analytical ratio is close to 40:25:16:13,and the decrease is gradually reduced.
作者
龚凯
睢燕明
GONG Kai;SUI Yan-ming(Wangping Coal Power Co.,Ltd.,Datong Coal Mine Group,Shuozhou 038300,China)
出处
《煤炭技术》
CAS
2019年第1期113-115,共3页
Coal Technology
关键词
注水压力
吸附平衡压力
解吸特性
水平衡
干燥
injection pressure
adsorption equilibrium pressure
desorption characteristics
water balance
dry state
