CAJ | 학술논문

对高含水煤样进行了三元混合气体（CH4，CO2，N2均为33．3％）的高压等温吸附试验，得出等温吸附曲线，并分析了三元混合气体在吸附过程中各组分体积分数的变化规律．结果表明，吸附曲线在煤样含水量高于5％时不遵循超出煤样平衡水分范围曲线不再变化的规律，而是吸附量低得多；吸附过程中各组分的体积分数是实时变化的，吸附能力强的气体吸附速率先快后慢，吸附能力弱的气体吸附速率先慢后快；在高压时吸附曲线没有明显变化．为更科学地计算煤层气资源量和可采潜力提供参考．
대고함수매양진행료삼원혼합기체（CH4，CO2，N2균위33．3％）적고압등온흡부시험，득출등온흡부곡선，병분석료삼원혼합기체재흡부과정중각조분체적분수적변화규률．결과표명，흡부곡선재매양함수량고우5％시불준순초출매양평형수분범위곡선불재변화적규률，이시흡부량저득다；흡부과정중각조분적체적분수시실시변화적，흡부능력강적기체흡부속솔선쾌후만，흡부능력약적기체흡부속솔선만후쾌；재고압시흡부곡선몰유명현변화．위경과학지계산매층기자원량화가채잠력제공삼고．
Through the isothermal adsorption experiments under high pressure of the coal sample with high wa- ter content and the mixed gas （CH4, CO： and N2 each take up 33.3% ） , we got the isothermal adsorption curve, and analyzed change law of each gas in the adsorption process. The result shows that： ① The adsorp- tion curve does not follow the existing regularity that the curve donot change anymore when the water content of coal sample is 5% higher than balance moisture scope, but becomes much lower. ② The volume percentage of each gas changes in real time, wheve the rate of adsorption is fast fivstly and thenshow for the gas with strong adsorptive capacity, but slow firstly and then fast for the gas with weak adsorptive capacity. ③ There is no evident change in adsorption curve under high pressure. The work can provide dependable reference for proceeding gas injection experiments and replacement experiments, calculate the coalbed methane （CBM） re- sources more scientifically, improve the recovery ratio and, reflect the recoverable potential of CBM.