Journal
CHEMICAL ENGINEERING SCIENCE
Volume 141, Issue -, Pages 125-132Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ces.2015.11.001
Keywords
Binary clathrate hydrate; Growth kinetics; Mass transfer; Brine solution; Cyclopentane methane hydrate
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Funding
- Grand Challenges Program
- Project X Innovation Fund at Princeton University
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Building on a our previous study on the kinetics of formation of cyclopentane (CP)-methane binary sII-type hydrate in well -agitated fresh water, analogous experiments have been performed in brine solutions at two salinities (3.5% and 7.0% NaCI, w/w) to investigate how salt affects this formation process thermodynamically and kinetically. The hydrate formation rate in salt water is found to be similar to 2-3 times smaller than that in fresh water at small subcooling levels Delta T <4 K but at higher subcooling levels, the two become comparable. The methane occupancy in the small cavities of the sll hydrate is also estimated to be similar to 0.5 for methane pressures between 1 and 3 MPa under equilibrium conditions, as well as during growth at subcooled conditions (Delta T < similar to 7 K). (C) 2015 Elsevier Ltd. All rights reserved.
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