COAL OXIDATION CHARACTERISTIC TEST DEVICE BASED ON COAL AND GAS SYMBIOSIS AND TEST METHOD THEREOF

摘要

The present invention discloses a coal oxidation characteristic test device based on coal and gas symbiosis. The device includes an air source, a methane gas source, two branch flow meters, a tee valve, a water seal buffer, a total flow meter, a dryer, a one-way gas valve, a fire resistance breathing valve and a cavity, after the air source communicates with the methane gas source, a gas pipe is inserted in a gas inlet of the cavity, an explosive-proof plate and an electric heating coil connected with a temperature control system are arranged at the middle of the cavity, a temperature sensing probe connected with a temperature monitor and a tray are arranged in the explosive-proof plate, a sealing cover, a rupture disk and a gas outlet are arranged on an upper end of the cavity, and the temperature control system, the temperature monitor and a microbalance are respectively connected with a data collection system. The present invention is suitable for researching the coal oxidation characteristics under a coal and gas symbiosis condition, and has fire-proof and explosion-proof characteristics, thereby preventing the damage caused by gas explosion in a test process, and the sample adding amount is relatively large, thereby overcoming the problem of too small coal sample adding amount of the traditional research methods. The present invention further provides a test method of the device.