| 초록 |
Currently, hydrogen is mainly produced from fossil fuels along with other components such as CO, N2, and CO2. Hydrogen (H2) is separated and purified before its use as a fuel. H2 separation and purification is a challenging issue mainly due to stringent product specifications. Conventionally, the pressure swing adsorption method is adopted to produce high purity H2. In this study, the non-conventional approach i.e., membrane and cryogenic is adopted to separate H2 from SNG and analyze from energy, exergy, and economic perspective. The membrane-based H2 purification method achieved 98.85% H2 purity while the cryogenic-based method achieved 99.999% H2 purity. However, the cryogenic approach is more energy-intensive (SEC: 11.11 kWh/kg) than the membrane process (SEC: 4.38 kWh/kg). These approaches can be explored further to achieve high purity H2 at low SEC. |
