Question

Ninety-five percent of the acetone vapor in an 85 vol.% air stream is to be absorbed by countercurrent contact with pure water in a valve-tray column with an expected overall tray efficiency of 50 %. The column will operate essentially at 20 ºC and 101 kPa pressure. Equilibrium data for acetone-water at these conditions are: Mole percent acetone in water 3.30 7.20 11.7 17.1 Acetone partial pressure in air, torr 30.00 62.80 85.4 103.0 Calculate:
(a) The minimum value of S/G, the ratio of moles of water per mole of air.


(b) The number of equilibrium stages required using a value of S/G of 1.25 times the minimum. (please indicate operating line obviously)

Answer 1

Answer:

Explanation:

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