| dc.description.abstract | Hydrogen is an example of renewable and environmentally friendly
future energy. Hydrogen as a fuel for emission-free vehicles has attracted much
attention recently. The level of hydrogen purity greatly determines its use and
economic selling price. Increasing the hydrogen purity can be done in two ways:
TSA (Temperature Swing Adsorption) and PSA/VSA (Pressure/Vacuum Swing
Adsorption). This study systematically uses the TSA method to optimize the
hydrogen purification process. This study aims to obtain a TSA system design
based on adsorbents' ability to absorb impurities in hydrogen purification. The
designed TSA system also observes the energy-saving operating conditions to
produce high-purity hydrogen products. The TSA process consists of six stages,
and stages are feed pressurization (FP), adsorption (AD), depressurizing pressure
equalization (DPE), depressurization (DP), purge (P), and pressurizing pressure
equalization (PPE). The principle of TSA is to use temperature to separate
hydrogen from impurities and improve hydrogen purity. All the processes
simulated in Aspen Adsorption v11. TSA is carried out by varying temperatures
at 278.15 K, 298.15 K, 303.15 K, and 318.15 K. The results of system separation
optimization (H2/CO2/CH4/CO/N2 = 0.564/ 0.031/ 0.266 / 0.084/ 0.055) using the
TSA method obtained high purity at a temperature of 298.15 K so that it achieved
hydrogen purity for the single-bed column of 99.97% and the two-bed column of
99.99%. | en_US |
