TY - JOUR
T1 - Thermodynamic Simulation for Continuous Formation of Ozone Hydrate
AU - Watanabe, Kosuke
AU - Nagashima, Hironori D.
AU - Nakamura, Ryo
AU - Ohmura, Ryo
N1 - Funding Information:
This study was supported by Keirin Racing-based research promotion fund from the JKA Foundation (Grant 28-142). Part of this work was supported by a joint research project organized by IHI Plant Construction Co., Ltd. The authors would like to thank Mr. S. Tomura, Mr. S. Nishitsuka, Mr. R. Akiyoshi and Mr. S. Saita, IHI Plant Construction Co., Ltd. for their encouragement on this work.
Publisher Copyright:
© 2018 American Chemical Society.
PY - 2018/9/4
Y1 - 2018/9/4
N2 - 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.
AB - 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.
KW - Clathrate hydrate
KW - Continuous formation
KW - Ozone
KW - Process design
KW - Thermodynamic simulation
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U2 - 10.1021/acssuschemeng.8b01859
DO - 10.1021/acssuschemeng.8b01859
M3 - Article
AN - SCOPUS:85050755786
SN - 2168-0485
VL - 6
SP - 11624
EP - 11632
JO - ACS Sustainable Chemistry and Engineering
JF - ACS Sustainable Chemistry and Engineering
IS - 9
ER -
