In distillation columns, the number of bubble caps per tray primarily depends upon the_______________________?
Correct answer: B. Allowable gas and liquid velocities
- A. Allowable liquid velocity
- B. Allowable gas and liquid velocities
- C. Allowable gas velocity
- D. Feed composition
Explanation
Bubble-cap capacity is limited by both vapour passage through the caps and liquid flow across the tray, so the design depends on allowable gas and liquid velocities. Feed composition does not primarily determine the number of caps per tray.
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