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

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The Following Feed Mixture Is To Be Separated By Ordinary Distillation At 120 Psia To Obtain 92 5 Mol Of The Nc4 In Th 1 (37.1 KiB) Viewed 28 times

The following feed mixture is to be separated by ordinary distillation at 120 psia to obtain 92.5 mol % of the nC4 in the liquid distil- late and 82.0 mol % of the iC5 in the bottoms. Component C3 iC4 nC4 iCs nCs Avga 4.36 2.36 1.88 1.00 0.84 Ibmol/h 5 15 25 20 35 100 A. Estimate Nin by the Fenske equation. B. Use the Fenske equation to determine the distribution of nonkey components between distillate and bottoms. C. Assuming that the feed is at its bubble point, use the Underwood method to estimate Rmin D. Determine N by the Gilliland correlation assuming R/Rmin=1.2, a partial reboiler, and a total condenser. E. Estimate feed-stage location.