Remove CO in hydrogen manufacturing conversion gas pressure swing adsorption technique tail gas2Method

The present invention relates to gas separation technique field, and CO in hydrogen manufacturing conversion gas pressure swing adsorption technique tail gas is removed in particular to one kind 2 Method, from pressure-swing absorption apparatus come out PSA tail gas separated into membrane module, CO 2 Separated as infiltration gas, the other components conduct in PSA tail gas oozes residual air and leaves membrane module.This method can solve the problems, such as carbon dioxide removal in hydrogen production process pressure-variable adsorption tail gas, by the introducing of membrane module while process economics are improved, greatly simplify technological process and operating cost, and film component device is simple, energy consumption is relatively low, easy to operate.