Aiming at the increasingly serious greenhouse effect and shortcomings of traditional CO2-capture and storage technology (CCS)

the two-stage and four-bed pressure swing adsorption (PSA) device was investigated to capture carbon dioxide from flue gas of power plant

which used carbon molecular sieve as the adsorbent of the first stage process and 13X zeolite as the adsorbent of the second stage process. In order to improve the recovery of CO2

a cycle was added into the process. The mathematical model of the above process was established. Then experiment was carried out

and the accuracy of the model was verified by comparison between the results of experiment and simulation. Results of simulation displayed that the trace CO2 (15%) in the flue gas could be enriched to 95% with a recovery of 93.92%. The productivity was 4.576 mol CO2·h-1·kg-1 while the energy consumption was only 0.847 MJ·(kg CO2)-1. By comparing with other processes

this process has the characteristics of high recovery

high purity and large amount of productivity. On this basis

the analysis of energy consumption

the temperature distribution

composition distribution in solid phase and gas phase were carried out within a cycle.