F1. A distillation column separating ethanol from water uses open steam heating. The bottoms composition is 0.00001 mole fraction ethanol. The inlet steam is pure water vapor and is superheated to 700°F. The pressure is 1.0 atm. The ratio of bottoms to steam flow rate is B/S = 2.0. Find the slope of the bottom operating line.
F2. The paper by McCabe and Thiele (1925) is a classic paper in chemical engineering. Read it.
a. Write a one-page critique of the paper.
b. McCabe and Thiele (1925) show a method for finding the feed lines and middle operating lines for a column with two feeds that is not illustrated here. Generalize this approach when q ≠ 1.0.
F3.* If we wish to separate the following systems by distillation, ...