1. An enricher column has two feeds. Feed F1 (input at the bottom) is a saturated vapor. Flow rate F1 = 100.0 kmol/h. This feed is 20.0 mol% methanol. Feed F2 (input part way up the column) is a two-phase mixture that is 90% liquid. Flow rate F2 = 80.0 kmol/h. Feed F2 is 45.0 mol% methanol. We desire a distillate that is 95.0 mol% methanol. Reflux is returned as a saturated liquid. Pressure is one atmosphere. L/D = 1.375. Assume CMO.

Find:

a. Exact configuration of the process, making its flow diagram.

b. Distillate and residue flows.

c. Determine the equations of the operation straight lines of all the zones of the column, by the method stage by stage, and plot the operation straight lines, in a clear, neat and clean way.

d. Determine the theoretical number of plates in the system, and the actual number of plates, if the overall efficiency is 50%. Indicate the actual positions of the feeds and the current drawn.

e. Explain how the process is affected if the feeds are mixed before entering the column. Do not perform calculations.

1 0,9 0,8 0,7 0,6 y, fraccin molar en el vapor 0,5 0,4 0,3 0,2 0,1 0 0 0,1 0,2 0,8 0,9 1 0,3 0,4 0,5 0,6 0,7 x, fraccin molar en el lquido