Mass transfer from circulating liquid drops
| Autor: | A. Foord, F. H. Garner, M. Tayeban |
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| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Journal of Applied Chemistry. 9:315-323 |
| ISSN: | 1934-998X 0021-8871 |
| DOI: | 10.1002/jctb.5010090605 |
| Popis: | Mass-transfer coefficients for partially miscible binary liquid–liquid systems have been measured from single drops. Four systems were studied, furfural-water, water-isobutanol, water-ethyl acetate and benzyl alcohol-water; the drop phase is the first mentioned and the drops were saturated with the other phase. These systems have low interfacial tensions and the drops circulate internally. Circulation will reduce the boundary layer thickness from that for a solid sphere towards that for a gas bubble or a sphere in potential flow and correspondingly affect the index of the Schmidt number. The mass transfer for circulating drops should correlate with Re1/2. Sc1/2 and for stagnant drops with Re1/2.Sc1/2. The present systems are intermediate in character, approximating to Re1/2. Sc0.42. The results are higher than those from spray columns and appear to represent the maximum mass-transfer rates obtainable from droplets in free motion. |
| Databáze: | OpenAIRE |
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