Which of the following is not a graphical method (but is an analytical method) for the calculation of theoretical number of stages in case of continuous binary distillation ?
Correct answer: A. Sorel-Lewis method
- A. Sorel-Lewis method
- B. McCabe-Thiele's method
- C. Ponchon-Savarit method
- D. None of these
Explanation
Sorel-Lewis is an analytical stage-calculation method, whereas McCabe-Thiele and Ponchon-Savarit determine stages graphically. The distinction is that Sorel-Lewis uses equations or summation rather than operating-line construction.
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