What is the slope of the operating line in the rectifying section of a distillation column ?
Correct answer: D. <1
- A. 0
- B. ∞
- C. > 1
- D. <1
Explanation
For the rectifying section, the operating-line slope is R/(R+1), where R is the reflux ratio. For any finite positive reflux ratio this value is less than 1, while it approaches 1 only at very large reflux.
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