The feed to fractionating column is changed from saturated vapour to saturated liquid. If the separation and reflux ratio remains unchanged, the number of ideal stages will______________________?
Correct answer: A. Increase
- A. Increase
- B. Decrease
- C. Remain same
- D. Depend on saturated boiling point; may increase or decrease
Explanation
Changing saturated vapour feed to saturated liquid feed changes the q-line from horizontal to vertical and generally makes the stripping separation less favourable at the same reflux ratio. Consequently, more ideal stages are required for the same product specifications.
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