For the same process conditions, the reflux ratio of an unlagged distillation column___________________?
Correct answer: B. Increases in winter
- A. Decreases in winter
- B. Increases in winter
- C. Increases in summer
- D. None of these
Explanation
An unlagged column loses more heat during winter, reducing useful internal vapour and liquid traffic. A higher reflux rate is therefore needed to maintain the same separation under otherwise identical conditions.
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