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Name 2 ways differential pressure could be decreased in a distillation column.

Name 2 ways differential pressure could be decreased in a distillation column.

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Answer #1

Differential pressure is the difference between the top pressure and bottom pressure of the coloumn. In a distillation coloumn pressure drop is occuring due to the following

  • Due to flow of vapour through the holes of the tray.
  • Due to liquid hold up in the tray.

Differential pressure could be decreased by following ways,

  1. By controlling the feed vapour, we can maintain the differential pressure. Differential pressure decreases with the decrease in rate of feed vapour flowing up and vice versa. Overloading of the feed might increase the differential pressure.
  2. Decrease in condenser efficiency, leading to the pressure increase in condenser, thereby causing a decrease in the flow of vapour from the coloumn top to condenser.
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