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A packed absorption tower's pressure drop rises sharply and its outlet concentration climbs.

What is the most likely cause?

  • A.The liquid rate is too low
  • B.The gas is too soluble
  • C.The tower has reached flooding
  • D.The packing has been removed

Answer: C

Liquid can no longer drain against the rising gas and accumulates in the packing, and both symptoms follow from that. Reducing the gas or liquid rate restores operation, and the design margin exists to keep the tower clear of the condition.

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