CAJ | 학술논문

　　为了系统研究煤层气(甲烷)解吸动力学的影响因素，选用川南地区的无烟煤，设计了不同压力、温度、粒度和湿度下的煤层气解吸动力学实验。采用高温高压煤层气吸附/解吸测试系统进行实验，并拟合实验结果获得了不同条件下的扩散系数。研究表明：压力和温度越高，甲烷解吸量和解吸速率越大；粒度越大，甲烷解吸量和解吸速率越小；低于平衡水含量时，湿度增大，甲烷解吸量和解吸速率降低；甲烷扩散系数拟合结果揭示，扩散系数随压力增高而减小，随温度升高而增大，随湿度增大而减小。
　　위료계통연구매층기(갑완)해흡동역학적영향인소，선용천남지구적무연매，설계료불동압력、온도、립도화습도하적매층기해흡동역학실험。채용고온고압매층기흡부/해흡측시계통진행실험，병의합실험결과획득료불동조건하적확산계수。연구표명：압력화온도월고，갑완해흡량화해흡속솔월대；립도월대，갑완해흡량화해흡속솔월소；저우평형수함량시，습도증대，갑완해흡량화해흡속솔강저；갑완확산계수의합결과게시，확산계수수압력증고이감소，수온도승고이증대，수습도증대이감소。
In order to study the affecting factors for coalbed methane desorption kinetics, desorption kinetics tests were designed under different pressure, temperature, grain size and moisture with anthracite from South Sichuan Coalfield. A self-made HTHP coalbed methane desorption tester was applied in desorption kinetics experiments. Diffusion coefficient was got by fitting result of test. Gas desorption capacity and rate of granular coal increase with increasing adsorption equilibrium pressure and temperature, and decrease with increasing grain size and moisture. The fitting result of diffusion coefficient reveals that diffusion coefficient is increasing with temperature but decreasing with pressure and moisture.