Question: The following feed mixture is to be separated by ordinary distillation at 120 psia so as to obtain 92.5 mol% of the nC4 in the

The following feed mixture is to be separated by ordinary distillation at 120 psia so as to obtain 92.5 mol% of the nC4 in the liquid distillate and 82.0 mol% of the iC5 in the bottoms.

(a) Estimate the minimum number of equilibrium stages required by applying the Fenske equation. Obtain K-values from figures.

(b) Use the Fenske equation to determine the distribution of nonkey components between distillate and bottoms.

(d) Determine the number of theoretical stages required by the Gilliland correlation assuming L/D = 1.2(L/ D)min , a partial reboiler, and a total condenser.

(e) Estimate the feed-stage location.

Ibmol/h Component 5 C3 iC4 nC4 iC5 nC5 15 25 20 35 100

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Subject Use of the FUG method for the distillation of a light paraffin hydrocarbon mixture Given Feed mixture of Column pressure 120 psia Liquid distillate contains 925 of the nC 4 in the feed Bottoms ... View full answer

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