Study on the Pore Structures and Adsorption Characteristics of Coking Coal of Liulin Mining in China Under the Condition of High Temperature and High Pressure

In order to study the change of pore structure and adsorption characteristics coking coal after high-temperature high-pressure test, from Liulin coalmine was selected for research. Both mercury injection experiments were carried out on raw isothermal experiment processing with a pressure 11 MPa temperature ranging 30 90°C. The results show that is beneficial gas adsorption, while has restraining effect coal, there good negative exponential relationship between capacity temperature. hysteresis loop test smaller than connectivity pores becomes worse. process experiment, coal. This demonstrates open decrease semi-closed increase, then worse, which not conducive flow when subjected action. After volume macropores, visible pores, crannies decreases, micropores minipores increases. However, total reduced overall. Under same pressure, increase in temperature, increases, proportion specific surface area also areas decreases