Abstract
Abstract: In Nigeria, biogas is a viable renewable energy source. This study's goal was to filter raw biogas of acidic gases CO2 and H2S before connecting it to the natural gas netting standard. The biogas acidic gas treatment plant was designed and numerically modelled using Aspen HYSYS 8.6. The simulation's primary goal is to find the optimal operating pressure that can make Nigerian biogas as pure as natural gas. The biogas treatment was carried out in a 20 stage PSA with a tray diameter of 1.7 m and a CO2 content of 0.25, H2S content of 0.0004, temperature of 30 C, pressure of 1.1 bar, flow rate of 13 m3 /h, and DEA concentration of 0.3. A PSA operating pressure of 5 bars is necessary to achieve 95% pure methane biogas. Keywords: Nigerian biogas; Methane enhancing; Aspen HYSYS; Biogas purification
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