Thermodynamic Simulation for Continuous Formation of Ozone Hydrate

O₃ concentration in O₃-containing clathrate hydrate formed by a continuous process is predicted using the thermodynamic simulation in which the hydrate-forming process is assumed to be a series of numerous equilibrium states each slightly deviating from the preceding state. The thermodynamic simulation was originally developed for natural gas hydrate. In this study, the simulation was modified to take account of O₃ self-decomposition. The O₃ decomposition rate was experimentally measured in the (O₃ + O₂ + CO₂) system to be used for the material balance calculation model. The phase-equilibrium calculation model used in this study was validated by comparison of the experimental O₃ concentration in hydrate to that calculated. The thermodynamic simulation indicated that the O₃ concentration in hydrate increased with an increase in the fraction of the gas discharged from the reactor. The higher rate of hydrate formation increased the O₃ concentration in hydrate asymptotically. This study revealed that the O₃ mass concentration in hydrate formed in a continuous process was the order of percent, which was a hundred times greater than that in the other O₃ storage technologies such as ozonated ice and ozonated water.