Foam entrainment?
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What is foam entrainment in the principles of chemical engineering?
When liquid enters the overflow pipe, since the foam has not yet had time to separate completely from the liquid, it often enters the overflow pipe along with the liquid and flows to the next tray in the tower. This phenomenon is known as foam entrainment. Also known as bubble entrainment, it is caused by an excessive liquid load.
When liquid enters the overflow pipe, the foam, due to the presence of surfactants, cannot break apart and enters the overflow pipe along with the liquid. This phenomenon is known as foam entrainment.
Foam entrainment refers to the phenomenon where the liquid on the tray is carried by the upward-flowing gas as mist droplets to the upper tray, thereby reducing the efficiency of the tray and affecting the separation of the product.