The chart is given as follows for Deprisester chart:

Image transcription text

We have a mixture that is 40 mole % propane and 60 mole % n-heptane. Feed flow rate is 1500 kg moles/hr. The drum pres- sure is 250 kPa. We wish to operate at V/F = 0.45. (Fig 2-10 and 2-11 in the 4th edition) a. Use the DePriester charts (Figure 2-11 or 2-12 ) or Eq. (2- (Eq. 2-28 in the 30) to generate temperature-composition and y-x diagrams. 4" edition) Then solve graphically for the product compositions and drum temperature. b. Solve by using the Rachford-Rice equation and a trial-and- error procedure. c. Compare the solution techniques you used in parts a and b. Which do you prefer? If you also wanted to determine the product compositions with V/F = 0.2, 0.4, 0.6 and 0.8, which solution procedure would you prefer and why?

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