For the complex distillation operation shown in figure 9 22, use the Fenske equation to determine the minimum number of stages required between (a) The distillate and feed, (b) The feed and the side stream, and (c) The side stream and bottoms The K values can be obtained from Raoult 's law CW 130 kPa kmol h Distillate Benzene 257 0 1 Toluene 165 kPa Feed Vapor side stream kmol h kmol h Benzene Toluene 3 Benzene Toluene 260 180 kPa 79 4 80 Biphenyl 0 2 Biphenyl 200 kPa Steam kmol h Bottoms Toluene 0 5 Biphenyl 4 8 Figure 9 22 Data for Exercise 9 5

Question: For the complex distillation operation shown in figure 9.22, use the Fenske equation to determine the minimum number of stages required between: (a) The distillate

For the complex distillation operation shown in figure 9.22, use the Fenske equation to determine the minimum number of stages required between:

(a) The distillate and feed,

(b) The feed and the side stream, and

CW 130 kPa kmol/h Distillate Benzene 257 0.1 Toluene 165 kPa Feed Vapor side stream kmol/h kmol/h Benzene Toluene 3 Benz

CW 130 kPa kmol/h Distillate Benzene 257 0.1 Toluene 165 kPa Feed Vapor side stream kmol/h kmol/h Benzene Toluene 3 Benzene Toluene 260 180 kPa 79.4 80 Biphenyl 0.2 Biphenyl 200 kPa Steam kmol/h Bottoms Toluene 0.5 Biphenyl 4.8 Figure 9.22 Data for Exercise 9.5.

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