In a distillation column, minimum clearance to be maintained between the overflow weir and the last row of the bubble caps is ______________ cms?
Correct answer: B. 7.5
- A. 2.5
- B. 7.5
- C. 15
- D. 20
Explanation
A clearance of about 7.5 cm between the overflow weir and the last row of caps is maintained so liquid can flow properly along the tray without obstructing the caps. Excessively small clearance can cause poor liquid distribution and local flooding.
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