Analisis Kemurnian Hidrogen Pada Proses Steam Methane Reforming Menggunakan Pressure Swing Adsorption Dengan Tekanan Adsorpsi 80 Psi

Abstract

One of the most promising clean energy alternatives to replace fossil fuels is hydrogen. Steam methane reforming (SMR) is the
most common method for hydrogen production, which consists of reforming and water gas shift (WGS) reaction. Through
reforming, hydrocarbons are converted into syngas, a hydrogen and carbon monoxide. Then, through WGS, carbon monoxide
reacted with steam to further enhance hydrogen yield. To obtain hydrogen of higher purity, a purification stage using pressure
swing adsorption (PSA) is required. Gas separation in PSA depends on the adsorption capacity of the selected adsorbent
material, the operating pressure, and the adsorption time. This study evaluates the effect of adsorption pressure on hydrogen
purity at the PSA outlet. Silica gel and activated alumina were used as adsorbents, with an adsorption pressure of 80 psi and
an adsorption duration of 180 seconds. The results demonstrate that PSA at 80 psi improved hydrogen purity significantly,
increasing from 48.66% at the WGS outlet to 62.43% at the PSA outlet. According to the results, higher operating pressure
enhances the ability of adsorbents to capture impurities more effectively, thereby improving the overall efficiency of hydrogen
purification.