To get high tray efficiency

Related MCQs

• Flooding in a vapor-liquid contacting equipment occurs in a tray, when the pressure drop through a tray is __________ the liquid head available in the downcomer.
• An aqueous solution of methanol is to be distilled in a tray column. High pressure steam is available as a source of heat. For a given reflux ratio and overhead composition, two options are being explored; (i) a reboiler is used and (ii) no reboiler is used but steam is fed directly to the bottom of the column. As compared to option (i), in option (ii)
• Tray spacing in a distillation column of dia 10-12 ft. used in petroleum refinery may be around __________ inches.
• In distillation columns, the number of bubble caps per tray primarily depends upon the
• Batch tray dryers suffers from the disadvantage of
• The ratio of Murphree plate efficiency to point efficiency is 1 in a __________ flow model.
• The ratio of Murphree plate efficiency to point efficiency is always > 1 in a __________ flow model.
• If the overall efficiency and Murphree plate efficiency are equal, then both the equilibrium and operating lines are:
• For a binary mixture with low relative volatility, continuous rectification to get pure products will require
• Plate efficiency in a distillation column is reduced due to the __________ of liquid.