Device and method for increasing gas concentration of coal mine ventilation air methane

• Main Authors: CHEN XUEXI, ZHANG XUKUN, QI LIMING, ZHAO RONG
• Format: Patent
• Language: Chinese; English
• Published: 22.02.2017
• Subjects: ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; CHEMISTRY; EARTH DRILLING; FIRELIGHTERS; FIXED CONSTRUCTIONS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; LIQUEFIED PETROLEUM GAS; LUBRICANTS; METALLURGY; MINING; NATURAL GAS; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS; SEPARATION; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE; TRANSPORTING

The invention relates to a device and a method for increasing gas concentration of coal mine ventilation air methane. The device and the method have the advantages that the coal mine ventilation air methane in the device flows through multi-segment temperature-adjustable high-porosity coal samples, effects of separating methane by a pressure swing adsorption method are improved with the help of the influence of the temperature on sample adsorption gas capability, and the methane can be separated according to a characteristic that permeability of air is far higher than that of the methane, so that the gas concentration of the coal mine ventilation air methane is increased effectively; high-porosity coals are made by adding gasifiable solid particles into the coal samples in advance, have great difference in adsorbability of the methane and the air as compared with common porous media, and are more developed than common coals in pores so as to facilitate gas permeability; a plurality of gas separation systems a