An adequate clearance between the tray and the shell wall of a distillation column is provided to_____________________?
Correct answer: D. Allow for thermal expansion and facilitate installation
- A. Drain the liquid from the tray when the unit is not in operation
- B. None of these
- C. Avoid back-trapping
- D. Allow for thermal expansion and facilitate installation
Explanation
The clearance between a tray and the column wall allows for thermal expansion and makes tray installation and removal possible. It is not primarily provided to drain the tray or prevent back-trapping.
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