95 x095 the stripping section operating line passes

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Unformatted text preview: tical q-line at the point where the rectifying section operating line intersects the q-line. As seen, the equilibrium stages are stepped off starting at the top, with a switch from the rectifying section to the stripping section to minimize the number of stages and, thus, locating the optimal feed stage. The result is just over 10 equilibrium stages plus a partial reboiler. Call it 11 equilibrium stages plus a partial reboiler. Applying Eq. (6-21), Na = 11/0.65 = 16.9 or 17 actual plates plus the partial reboiler. Analysis: (continued) Exercise 7.28 (continued) Analysis: (continued) Exercise 7.28 (continued) Analysis: (continued) Exercise 7.28 (continued) Analysis: (continued) (d) MW of benzene = 78.11. MW of toluene = 92.14. Let F = kmol/h of feed. Then by mass material balance with an equimolar feed, 0.5F (78.11) + 0.5F(92.14) = 907.3 Solving, F = 10.66 kmol/h. For the equimolar feed, the component flow rates in the feed are: 5.33 kmol/h each for benzene and toluene Next calculate the distillate and bottoms flow rates from, overall total mole ba...
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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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