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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. In the matrix approach, we assumed K = K(T, p). How would the flowchart in Figure 6-1 change if K = K(T, p, xi)?

A2. The method described in this chapter is a simulation method because the number of stages and the feed and withdrawal locations must all be specified. How do you determine the optimum feed stage?

A3. Develop your key relations chart for this chapter.

A4. In a multicomponent simulation program for distillation the loops are nested. The outermost loop is mole fractions, next is flow rates and the innermost loop is temperature.

1. Mole fractions are the outermost loop because,

a. Many distillation problems can be done without this loop.

b. Changing mole fractions often do not have a major effect on K values. ...

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