Question: Methanol (M) is to be separated from water (W) by distillation, as shown in Figure 7.41. The feed is subcooled: q = 1.12. Determine the

Methanol (M) is to be separated from water (W) by distillation, as shown in Figure 7.41. The feed is subcooled: q = 1.12. Determine the feed-stage location and the number of stages required. Vapor– liquid equilibrium data are given in Exercise 7.19.

Subcooled liquid kg/h 14,460 10,440 M W CW L/D = 1.0 1

Subcooled liquid kg/h 14,460 10,440 M W CW L/D = 1.0 1 atm Steam Figure 7.41 Data for Exercise 7.23. 99 mol % methanol 99 mol% water

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