Research on Adsorption and Desorption Characteristics of Gas in Coal Rock Based on Nuclear Magnetic Resonance Technology

Figure 2

Schematic diagram of gas adsorption-desorption device. 1—air source; 2—pressure regulating valve; 3—total gas switch; 4—reference tank; 5—electronic pressure gauge; 6—balance switch; 7—vent and pump-down switch; 8—nuclear magnetic resonance instrument; 9—clamp device; 10—sample.