Effect of voltage and initial temperature on thermodynamics and kinetics of CO2 hydrate formation in an electrostatic spraying reactor

Lanyun Wang, Yajuan Zhang, Huilong Xie, Xiaoran Lu, Xinglin Wen, Zhen Liu, Huajian Zhou, Zejian Liu and Yongliang Xu

Energy, 2022, vol. 239, issue PD

Abstract: The effect of electrostatic spraying on the formation of CO2 hydrate was experimentally studied. The effects of voltage (0, 0.5, 1.0, 1.5, 2.0 KV) and initial temperature (285.15, 282.15, 279.15 K) on the morphology, phase equilibrium temperature, induction time, rapid growth time, gas consumption, water to hydrate conversion and gas uptake rate of CO2 hydrate were analyzed. The CO2 hydrate primarily took the wall of the vessel as the nucleation site and grew from wall to the center of the reactor. The main morphological structure of CO2 hydrate were white filaments stacked in arcs, branches, and clusters. Low voltage-high initial temperature and high voltage-low initial temperature were conducive to improving the phase equilibrium temperature of CO2 hydrate. The application of voltage would prolong the induction time and shorten the rapid growth time of CO2 hydrate, and the effect would be more apparent with the increase of voltage. Lowering the initial temperature would shorten the induction time, 23 min was observed at 1.0 KV and the initial temperature of 279.15 K. The gas consumption and water to hydrate conversion change with voltage were in an order of 1.0 > 0>2.0 > 1.5>0.5 KV at the same temperature. Only 1.0 KV could enhance CO2 gas consumption, water to hydrate conversion and gas consumption rate.

Keywords: Gas hydrate; Electrostatic spraying; Voltage; Initial temperature; Thermodynamics; Kinetics (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:239:y:2022:i:pd:s0360544221026335

DOI: 10.1016/j.energy.2021.122384

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