Gas holdup-slip velocity relationship in multistage bubble column
β Scribed by M. Vinaya; Y. B. G. Varma
- Publisher
- Springer
- Year
- 1996
- Tongue
- English
- Weight
- 344 KB
- Volume
- 15
- Category
- Article
- ISSN
- 1615-7605
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β¦ Synopsis
Gas holdup data in multistage bubble column is analyzed through slip velocity incorporating pseudo hydrostatic effect, momentum transfer effect, particle-to-particle and particle-to-wall effects and coalescence effects. The bubble size, required for the estimation of single bubble rise velocity, is satisfactorily predicted using the model due to Molerus [9], and the influence of gas throughput, the perforation diameter and the free area of the horizontal plate, as well as the plate spacing on bubble size are examined. List of symbols b d o m d m g ms -2
π SIMILAR VOLUMES
Gas holdup in bubble columns has been investigated over a wide range of operational and geometrical parameters. A criterion has been developed for the prediction of the transitional velocity from the homogeneous to heterogeneous flow regime. Correlations for gas holdup in both regimes are developed
Noise analysis techniques are used to construct bubble velocity and gas holdup profiles in an air/water bubble column. It is shown that the use of a laser renders reliable and consistent results. A comparison with local data obtained with a four-point glasfiber probe and the drift flux model of Bame