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5. A distillation column with a partial condenser and a partial reboiler is separating a mixture that is 70 mol% n-pentane and 30 mol% n-hexane.
5. A distillation column with a partial condenser and a partial reboiler is separating a mixture that is 70 mol% n-pentane and 30 mol% n-hexane. Feed rate is 1000 kmol/h and it is at 35 C. Column is operating at 1.0 atmosphere, and at an external reflux ratio of 2.8. The overhead distillate product is 99.9 mol% n-pentane and the bottoms product is 99.9 mol% n-hexane. Find D, B, Q&QR: Data: = 11,369 Btu/lbmol = 13,572 Btu/lbmol, both i at boiling points. PLES = 39.7 (assume constant) CPL.C = 51.7 (assume constant) Opvcs = 27.45 + 0.08148 T - 4.538 x 10-5 T2+ 10.1 x 10-4T3 Opvco = 32.85 +0.09763 T - 5.716 x 10-5 T2 + 13.78 x 10-9 T3 where T is in C and Cpy and Cpl are cal Btu or mol C 1bmol F Source for 1 and Cp data is Felder and Rousseau (2004)
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