Oil–Particle Separation in a Falling Sphere Configuration: Effect of Oil Film Thickness
| Autor: | Edgar Acosta, Sasan Mehrabian, Markus Bussmann |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Aqueous solution
business.industry Chemistry General Chemical Engineering Energy Engineering and Power Technology 02 engineering and technology 021001 nanoscience & nanotechnology Capillary number Separation process Viscosity Fuel Technology Optics 020401 chemical engineering Asphalt Particle Oil sands SPHERES 0204 chemical engineering Composite material 0210 nano-technology business |
| Zdroj: | Energy & Fuels. 30:8776-8786 |
| ISSN: | 1520-5029 0887-0624 |
| Popis: | High-speed videos of oil-coated solid spheres falling through an aqueous solution were analyzed to determine the amount of oil separated and the velocity of the coated sphere during free fall. The oil-coated sphere configuration is relevant to understanding the recovery of oil from oil sands; hence, bitumen was used as the oil phase. A new form of a capillary number based on a low-Reynolds number solution is introduced to characterize the separation process. The proposed particle-based capillary number takes into account the effect of the oil film thickness and the viscosity ratio. In this study, the separation of oil from an oil-coated sphere is examined as a function of the oil film thickness, while keeping the viscosity ratio constant at 0.08. From the experimental results, it was observed that there is a critical oil film thickness beyond which oil separation from a particle is observed. Higher oil removal efficiencies are obtained at higher oil film thicknesses. The velocity of an oil-coated sphere i... |
| Databáze: | OpenAIRE |
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