Utilization of dual - PSA technology for natural gas upgrading and integrated CO₂ capture

In this study, we have considered Pressure Swing Adsorption (PSA) technology natural gas purification and
integrated CO₂ capture. We present the utilization of Dual-PSA technology for obtaining pipeline-quality methane
and integrated CO₂ capture. In the initial simulation example, a binary stream of 10% CO₂ – 90% CH₄ could be
separated into two streams where the CH₄-rich stream has a purity of 98% and the CO₂-rich stream has a purity of
91%. The overall recovery of methane is higher than 99% and unit productivity of the Dual-PSA is 3.3 mol CH₄
/(kgads.h).