Acoustically aided coalescence of water droplets and dehydration of crude oil emulsion
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Type
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Journal
Article
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Author
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Wei
Xie
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Author
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Rui
Li
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URL
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Volume
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32
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Issue
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4
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Pages
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643-649
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Publication
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Korean
Journal of Chemical Engineering
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Date
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2015/01/06
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Abstract
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Reports
investigation of the use of acoustics for coalescence of water droplets and
dehydration of crude oil emulsion. Researchers performed experimental studies
employing acoustic standing waves in a resonant cavity to trap water droplets
and enhance oil separation. They focused on the effect of ultrasound
irradiation on crude oil emulsion properties, including viscosity, water drop
radius, shear strength of oil-water interfacial films, and flocculation size
of asphaltene. These are important properties in the coalescence of water
drops in water-oil (W/O) emulsion in the process of oil separation with
ultrasound.
Ultrasound irradiation decreases emulsion stability, offering new insight into the acoustics-aided demulsification mechanism. It supplements traditional acoustics-aided demulsification mechanism. Authors discuss the effects of such ultrasonic parameters as the type of ultrasonic field, irradiation time, frequency, and acoustic intensity on dewatering the W/O emulsion. Results offer guidance for setting optimum conditions for the separation of W/O emulsion with ultrasound. |
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