Coalescence and entrainment: Phenomena on sieve trays

✍ Scribed by A. J. Teller; R. E. Rood

• Publisher: American Institute of Chemical Engineers
• Year: 1962
• Tongue: English
• Weight: 699 KB
• Volume: 8
• Category: Article
• ISSN: 0001-1541
• DOI: 10.1002/aic.690080322

✦ Synopsis

Abstract

Evaluation was made of the effect of hole spacing for 3/16‐in. diameter perforations on a sieve tray, on the magnitude and size distribution of entrainment. The study utilized high‐speed photography and entrainment measurements. The magnitude and average particle size of entrainment appears to be related to the degree of bubble coalescence in the liquid continuous phase and increases rapidly with decrease in hole spacing. Bubble bursts do not contribute significantly to entrainment in multiple perforation geometry; the major contribution occurs from shear of the liquid wall by vapor flumes.