Vapor velocity in a distillation column for non-foaming mixture is in the range of ______________ times the flooding velocity?
Correct answer: B. 0.6 to 0.7
- A. 0.1 to 0.3
- B. 0.6 to 0.7
- C. 0.85 to 0.95
- D. 1.5 to 2
Explanation
Distillation columns normally operate below flooding, commonly at about 60 to 70% of the flooding vapor velocity for non-foaming systems. Operation near 85 to 95% leaves little safety margin and risks flooding.
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