Operating velocity in a packed tower is usually __________ the flooding velocity.

Related MCQs

• At the same gas flow rate, the pressure drop in a packed tower being irrigated with liquid __________ that in dry packed tower.
• Under conditions of flooding in packed tower, the gas pressure drop
• The reason for preferring packed towers over plate towers in distillation practice is that the packed tower operation gives
• Pressure drop through plate tower as compared to that through packed tower, for the same duty will be
• In a moderately sized packed absorption tower, channelling (which is most severe with stacked packings) can be minimised by taking the ratio of tower diameter to packing diameter
• A packed tower compared to a plate tower for a particular mass transfer operation
• In a packed tower, the value of HETP equals HTUOG, when the equilibrium and the operating lines are (where, HETP = height equivalent to a theoretical plate HTUOG = overall gas phase height of a transfer unit).
• In a packed absorption tower, if the equilibrium and operating lines are both straight lines, then the ratio, HETP/HTUOG __________ the absorption factor.
• The main reason for dividing a tall packed tower into series of small towers is to
• Diameter of raschig rings used in packed tower in industry is normally around __________ inches.