| 초록 |
Separating CO2 from fuel gas (CO2 + H2¬) and flue gas (CO2 + N2¬) has important industrial and environmental implications. Gas hydrate-based separation process has many advantages in terms of energy, cost, and eco-friendliness over the other existing methods. Measuring or estimating thermodynamic hydrate phase equilibrium conditions is necessary when evaluating the process efficiency that is associated with the cooling and compression. Most previous studies did not consider the relative amount of water and mixed gas that can play a critical role in determining the hydrate phase equilibria. Here, the effect of the water to gas ratio was studied through experimental measurements and calculations by using the CSMGem, a thermodynamic prediction tool. Gas compositions at the phase equilibrium conditions were characterized by gas chromatography. The present findings imply that the water to gas ratio would be an important consideration when designing the gas hydrate-based processes. |
