What is mist entrainment? What factors are related to it?
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As steam rises inside the tower and bubbles up through the liquid layer on the tray, its kinetic energy carries some liquid droplets upward. When the gravitational force of these droplets overcomes the kinetic energy of the gas flow, they return to the tray; however, if the kinetic energy of the rising gas flow is greater than the gravity of the droplets, they are carried to the next tray up. This phenomenon is known as mist entrainment. The amount of mist entrained has a significant impact on distillation, and it is also closely related to the density of the vapor phase in the tower and the plate spacing.
Was it considered during the design to install a demisting device at the tower outlet to address mist entrainment?
When this happens, the product at the top of the tower is definitely defective. Adjustment is needed.