To achieve accuracy one diagram covers the high

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Unformatted text preview: dle region, and one the low-concentration region. The result is between 14 and 15 equilibrium stages. Call it 14 stages plus a partial reboiler. Exercise 7.33 (continued) Analysis: (a) (continued) Exercise 7.33 (continued) Analysis: (a) (continued) Exercise 7.33 (continued) Analysis: (a) (continued) Exercise 7.33 (continued) Analysis: (a) (continued) Analysis: (continued) Exercise 7.33 (continued) (b) When open (live) steam is used with the same reflux ratio, the rectification section operating line and the q-line are identical to part (a) for a partial reboiler. Thus, the part (a) McCabe-Thiele diagram for the high concentration region applies for open steam. However, the stripping section operating line and the bottoms mole fraction change as follows. The liquid rate in the rectification section = L = 1.314D = 1.314(14.52) = 19.08 kmol/h. The vapor rate in the rectifying section = V = L + D = 19.08 + 14.52 = 33.6 kmol/h. The liquid rate below the feed stage = L' = L + F = 19.08 + 100 =...
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This note was uploaded on 09/08/2008 for the course CHE 244 taught by Professor Selebi during the Spring '06 term at Lehigh University .

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