Abstract The three bed vacuum pressure swing adsorption experiment for nitrogen and methane separation was studied with the coconut shell activated carbons as adsorbent. The adsorption and replacement pressure was 0.5 MPa, and the desorption pressure was -0.08 MPa. 30% Methane was concentrated to 80—98% with the recovery of 65%—96%. The influence of outlet flow rate in the adsorption and replacement steps for the purity and recovery of methane were also studied. Aspen Adsorption software was used to establish the model, the simulation results and the experimental results were approximately the same. Simulation process was able to provide the basic design parameters of the industrial plants for methane enrichment.
YANG Hua-Wei, ZHANG Zheng-Wang, ZHANG Dong-Hui.Modeling and Experiment of Vacuum Pressure Swing Adsorption Process for N2 and CH4 Separation[J] Chemcial Industry and Engineering, 2013,V30(5): 55-60
2013, Vol. 30 
