In our previous studies, two-step pressure swing adsorption (2 step PSA) using HAS-Clay and Zeolite A-5 was developed, and executed the performance tests for hydrogen purification with CO<sub>2</sub> capture. As a result, the following facts were obtained: (1) CO<sub>2</sub> almost completely from syngas was separated by HAS-Clay, and (2) hydrogen of 97 % concentration was purified by Zeolite A-5. Here, a simulation model of hydrogen purification through 2 step PSA in consideration of non-stationary dynamics unsteady was developed in use of gPROMS (PSE Ltd.) in order to simulate the performance of 2-step PSA. For this purpose, the related physical property data were employed.
Consequently, it was confirmed that our simulation model was valid in comparison to the experimental results of multicomponent breakthrough curves. Also, it would be favorable to estimate the energy efficiency and/or the environmental indexes, changing the technological parameters.
