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E. More Complex Problems.

E1. A vertical flash drum will be used to separate 1000 kmol/h of a feed that is 10 mol% isopropanol and 90 mol% water. The feed is at 9 bar and 75°C. V/Fdrum = 0.5 and pdrum = 1.0 bar.

a. Find L, V, xi, yi, Tdrum, the heat duty in kW, and the drum diameter.

b. Unfortunately, the drum available is 1.0 m in diameter, which is too small. Your boss suggests raising the drum pressure to use the existing drum with V/F = 0.5. The maximum pressure for the drum is 9.0 bar. Will the current drum work at a pressure < 9.0 bar?

c. If yes, what is the lowest drum pressure that works (that is, for what pressure does Ddrum = 1.0 m)? Find L, V, xi, yi, Tdrum, and the heat duty in kW.

E2. A flash drum is to flash 10,000 lbmol/h of a ...

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