Question: 13.1 Consider the distillation column shown in Fig. 13.2. It would be reasonable to control the liquid level in the reflux drum, hp, by manipulating

13.1 Consider the distillation column shown in Fig. 13.2. It would be reasonable to control the liquid level in the reflux drum, hp, by manipulating either reflux flow rate, R, or distil- late flow rate, D. How would the nominal value of the reflux ratio (R/D) influence your choice? As a specific example, as- sume that R/D=4

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