For water-ethanol system, the minimum reflux ratio_____________________?
Correct answer: A. Is computed from the slope of the upper operating line that is tangent to the equilibrium curve
- A. Is computed from the slope of the upper operating line that is tangent to the equilibrium curve
- B. Is computed from the intercept of the operating line
- C. Cannot be computed
- D. Is the optimum reflux ratio
Explanation
At minimum reflux, the operating line reaches a limiting pinch, commonly where it is tangent to the equilibrium curve, and its slope determines the reflux ratio. The intercept alone does not define the minimum reflux ratio, and minimum reflux is not the optimum economic reflux ratio.
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