Introduction: The high-pressure gas isothermal adsorption instrument is used to measure the adsorption characteristics of rock or coal samples under simulated formation conditions. The equipment was applied at the National Energy Unconventional Key Laboratory at Langfang Branch of China National Petroleum Corporation. Technology requirement: 1) Model: AD-RXF-40\100 2) Measurement principle: The magnetic adsorption weight method is used to directly measure the amount of sample adsorption. 3) Environmental requirements: Power Ac220V, 50HZ, rated power 2kW, ambient temperature 10-30°C, relative humidity <80%. 4) The isothermal adsorption system uses: a, PID high-precision control system; b, magnetic levitation high-precision weighing system; c, touch screen experimental steps set the entire man-machine interface; d, full-time data storage, curve diagram analysis, common standards Data table output; e, monitoring, alarm can be traced; f, the system can be set within the scope of the instrument, the adsorption / desorption point threshold and pressure value. 5) The system is equipped with a cylinder tank distributor 6) Cylinders for methane, ethane, helium, nitrogen, carbon dioxide, higher-order hydrocarbons, etc. 7) The temperature actuator adopts high-precision temperature control, and an external oil jacket simulates the temperature of the adsorption heating device, and can be converted into an electrothermal temperature balance body metal sleeve high temperature 400 degree pretreatment actuator. 8) Adsorption oil bath temperature probe adopts PT100 temperature control, temperature control range 20-150°C, temperature control accuracy ±°C0.1 (display), and 0.01 is the actual internal operation accuracy. 9) Electrothermal temperature balance body pretreatment jacket temperature up to 400 °C, temperature control accuracy ± 0.5 °C 10) High-pressure adsorption cell parameters: Pressure range ≤ 350kg/cm2 Weighing range of the weighing body ≤ 60kg, applicable φ25mm core, 1-10g high-precision rapid analysis, resolution of 10μg, reproducibility ≤ ± 0.02mg/ 0.1mg, linear ± 0.06mg/0.2mg, anti-static coating, windproof, electrostatic shielding, four shockproof weighing anti-jamming measures 11) Four high-pressure solenoid valves control intake/exhaust gas, two solenoid valves introduce reference gas helium and adsorption gas, and two solenoid valves connect vacuum pump/exhaust gas. 12) Pressure sensor: Accuracy: >FS0.1%, Repeatability: Linear: Range: high pressure 40 MPa/cm2, medium pressure range 4 MPa/cm2 (high and medium pressure are used to measure pressure in different pressure sections) 13) Software interface functions: high-pressure gas density calculation function; high-pressure gas adsorption amount calculation; real-time detection data table derivation; high-pressure isotherm adsorption weight change process curve; measuring the weight of a known volume of the reference substance under the high pressure of the reference gas, High pressure gas density calculation. For premixed gas, the data of competitive adsorption of binary gas can be obtained through density calculation under high pressure.
Introduction: The high-pressure gas isothermal adsorption instrument is used to measure the adsorption characteristics of rock or coal samples under simulated formation conditions. The equipment was applied at the National Energy Unconventional Key Laboratory at Langfang Branch of China National Petroleum Corporation.
