Kinetic Analysis of Methane Hydrate Formation with Butterfly Turbine Impellers
Longinos S.N. Longinou D.D. Myrzakhmetova N. Akimbayeva N. Zhursumbaeva M. Abdiyev K. Toktarbay Z. Parlaktuna M.
July-2 2022MDPI
Molecules
2022#27Issue 14
Heat generation during gas hydrate formation is an important problem because it reduces the amount of water and gas that become gas hydrates. In this research work, we present a new design of an impeller to be used for hydrate formation and to overcome this concern by following the hydrodynamic literature. CH4 hydrate formation experiments were performed in a 5.7 L continuously stirred tank reactor using a butterfly turbine (BT) impeller with no baffle (NB), full baffle (FB), half baffle (HB), and surface baffle (SB) under mixed flow conditions. Four experiments were conducted separately using single and dual impellers. In addition to the estimated induction time, the rate of hydrate formation, hydrate productivity and hydrate formation rate, constant for a maximum of 3 h, were calculated. The induction time was less for both single and dual-impeller experiments that used full baffle for less than 3 min and more than 1 h for all other experiments. In an experiment with a single impeller, a surface baffle yielded higher hydrate growth with a value of 42 × 10−8 mol/s, while in an experiment with dual impellers, a half baffle generated higher hydrate growth with a value of 28.8 × 10−8 mol/s. Both single and dual impellers achieved the highest values for the hydrate formation rates that were constant in the full-baffle experiments.
butterfly turbine , gas hydrates , hydrate formation , induction time
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Department of Petroleum Engineering, Nazarbayev University, Nur-Sultan, 010000, Kazakhstan
Department of Petroleum and Natural Gas Engineering, Middle East Technical University, Ankara, 06800, Turkey
Department of Economics & Sustainable Development, Harokopio University, Athens, 17676, Greece
Department of Chemistry, Faculty of Natural Science, Kazakh National Woman’s Teacher Training University, Almaty, 700420, Kazakhstan
Department Chemical Processes and Industrial Ecology, Satbayev University, Almaty, 050013, Kazakhstan
Advanced Solar Energy Materials and System Lab, National Laboratory Astana (NLA), Nazarbayev University, Nur-Sultan, 010000, Kazakhstan
Department of Petroleum Engineering
Department of Petroleum and Natural Gas Engineering
Department of Economics & Sustainable Development
Department of Chemistry
Department Chemical Processes and Industrial Ecology
Advanced Solar Energy Materials and System Lab
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