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Separation Process Engineering: Includes Mass Transfer Analysis, Third Edition by Phillip C. Wankat

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A. Discussion Problems

A1. Given a homogeneous azeotrope to separate, if you know nothing about the system, which method is least likely to be economical?

a. Two-pressure distillation

b. Extractive distillation

c. Azeotropic distillation

A2. Which method(s) are commonly used for separating systems with relative volatilities close to 1.0 in addition to separating azeotropes?

a. Two-pressure distillation

b. Extractive distillation

c. Azeotropic distillation

d. All of the above

e. a and b

f. a and c

g. b and c

h. None of the above.

A3. Why is a cooler required in Figure 8-13? Can this energy be reused in the process?

A4. Explain the purpose of the liquid-liquid settler in Figures 8-3A, 8-4A, and 8-18.

A5. Explain why the external mass balances are ...

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