Predict and Prevent Air Entrainment in Draining Tanks
| By Steve G. Rochelle and Marvin T. Briscoe, Jr. Eastman Chemical Co.
When tanks are draining, the potential may exist for a swirling vortex to form leading from the liquid surface to any of the bottom-exit or side-exit nozzles connected to downstream piping (Figure 1). One important aspect of the vortex is whether it…