Using pressure swing adsorption(PSA)technology to purify carbon monoxide(CO)discharged from industria]gases is a high-efficiency and economicalmethod.In.this article,a four-bed PSA experiment for C0 purl-CO from industrial tail gases,a set of control systems suitable for industry production was developed,and the in-fluences of the operating oaramcters on CO purification were investigated.The experimental results,ndicated that the pilot-scale PsA device could produce qualified product gas and get high CO recovery rauo under optimized conditions.The research may provide reliable fundamental data,for industria]scale utilization of CO,from indus-trial tail gases,and have strong market competitive power and a broad promoted application prospect.