Production method for pressure-swing adsorption concentration of methane in gas

The invention relates to a method for the concentration of methane in a gas, in particular to a production method for the pressure-swing adsorption concentration of methane in the gas. The technical problem to be solved by the invention is to provide the production method for the pressure-swing adsorption concentration of the methane in the gas. In the method, adsorbents are filled into an adsorbing tower of a pressure-swing adsorption device and a buffer tank; an explosion suppression material the volume of which is 3-4 percent of the volume of the adsorbent is filled into the adsorbing tower of the pressure-swing adsorption device, and an explosion suppression material the volume of which is 1-2 percent of the volume of a pipeline is filled into the pipeline. The method can be used for the concentration of the gas containing 0.5-90 percent of methane, expands the application range of pressure-swing adsorption and improves the utilization quantity and the utilization rate of the gas.