08 144 psi the column diameter is estimated to be 45

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: : (a) In Fig. 7.37, below, the bubble point for 30 mol% nC6 in nC8 is shown as point B, which corresponds to a temperature of 211oF. An equilibrium tie line is drawn from point B to point M at the intersection with the saturated vapor line. The vapor composition at point M is 69 mol% nC6 and 31 mol% nC8. (b) From Fig. 7.37, reproduced below, the enthalpy of the initial mixture of 20 mol% nC6 at 100oF, shown at point G, is 6,500 Btu/lbmol = HG . A vertical line is drawn upward from point G until it reaches the point E, located on the dashed tie line between the saturated liquid and saturated vapor curves, at a point that is 60% of the way from the saturated liquid curve to the saturated vapor curve. The enthalpy of the two-phase mixture at point E is 23,000 Btu/lbmol = HE. Therefore, the energy required = Q = HE - HG = 23,000 - 6,500 = 16,500 Btu/lbmol. (c) From the reproduction of Fig. 7.37 below, the equilibrium liquid phase composition is at point D, which is 7.5 mol% nC6 , while the equilibrium vapor composition is at po...
View Full Document

This note was uploaded on 09/08/2008 for the course CHE 244 taught by Professor Selebi during the Spring '06 term at Lehigh University .

Ask a homework question - tutors are online