In packed towers provided with pall rings liquid redistributors are positioned at heights of every 6 metres or 5-10 times the column diameter, whichever is less. Maximum size of the pall rings should not exceed _______________________ of the column diameter?
Correct answer: D. 1/10-1/15th
- A. 1/2 to 1/4th
- B. 1/5-1/10th
- C. 1/20-1/30th
- D. 1/10-1/15th
Explanation
To avoid excessive pressure drop and poor liquid distribution, random packing should be substantially smaller than the column diameter. For Pall rings, the usual limit is approximately one-tenth to one-fifteenth of the diameter.
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