Design of Sieve Plate Spargers for Bubble Columns: Role of Weeping

✍ Scribed by B. N. Thorat; A. V. Kulkarni; J. B. Joshi

• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: English
• Weight: 373 KB
• Volume: 24
• Category: Article
• ISSN: 0930-7516
• DOI: 10.1002/1521-4125(200108)24:8<815::aid-ceat815>3.0.co;2-h

✦ Synopsis

Weeping through perforated plates occurs when the pressure drop of the gas/vapor passing through it is insufficient to support the liquid. The critical weep velocities (V O, crit ) were measured for the plates having hole diameter range of 1 to 6mm. The thickness to hole diameter ratio (t/d O ) and the pitch to hole diameter ratio (P/d O ) were varied in the range of 1 to 6 and 3.9 to 25.8, respectively. It was found that the V O, crit is a strong function of plate parameters and the clear liquid height. A mathematical model for ªNo weepº condition was developed under the following two extreme conditions: (i) holes are partially open, (ii) holes are completely active. The results obtained from the experimentation and the mathematical correlation were put into a coherent form. The weeping criterion in terms of the Froude number was correlated with the plate parameters and the clear liquid height.