In case of binary distillation, increasing the reflux ratio above optimum does not result in the increase of_______________________?
Correct answer: A. Area between operating line and 45° diagonal x-y diagram
- A. Area between operating line and 45° diagonal x-y diagram
- B. Condenser and reboiler surfaces
- C. Tower cross-section
- D. None of these
Explanation
Increasing reflux moves the operating line closer to the 45° diagonal, so the area between them does not increase. Higher reflux does increase internal liquid and vapour traffic, which can require larger tower and heat-transfer equipment.
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