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Critical Breakage Condition for Dispersed Droplets of W/O Emulsion |
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Abstract: The mechanism and critical breakage condition of dispersed droplets in Newtonian liquid-liquid emulsion was analysed. A lamina shear flow was obtained by Couette double-cylinder device. Based on the deformation and breakage of the water-in-oil emulsion at different shearing rates, the critical breakage condition was validated and updated. With respect to the water-oil hydrocyclone, the separate effect can be forecast by the flow distribution and the physical properties of the emulsion. According to the separate capability of the hydrocyclone, the operaing condition such as rotating speed and flux can be appropriately controlled to maintain a reasonable distribution of the internal flow field, therefore, to prevent a further emulsification. The study of the critical breakage condition can provide a reliable basis to determine the proper shear distribution in various emulsion separating devices.
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Received: 16 December 2008
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