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Show transcribed image text Constructing Equilibrium Diagrams Question 1 Construct an x – Tdiagram showing the compositions of the liquid and vapour phases for a mixture of benzene and toluene at (t) I bar and (ii) 2 bar. Assume that the Antoine equation holds and that the mixture can be described by Raoult's Law. The Antoine parameters are as follows rg benzene toluene 15.9008 6.0137 2788.51 3096.52 -52.36 -53.67 These data correspond to the form of the Antoine equation which takes a natural log, the pressure is in mmlHg and the temperature is in K. Question2 For the two cases considered above, plot x – y diagrams. What conclusions can be drawn? Question 3 For the two cases considered, plot α versus x. Question 4 Plot an x-y curve for a separation where the relative volatility is constant at 2.5. Sketch a line on this plot that corresponds to Henry's Law and find the Henry's Law constant. Binary Flash Question 5 a) A feed containing 45% benzene is flashed to l bar, 370 K. Using the x-T diagrams from question 1, define the liquid and vapour compositions and the fraction of the mixture which is liquid. [0.334, 0.551 , 0.465] 0 7, use the x b) A feed containing 30% toluene is flashed to 1 bar. If q the liquid and vapour compositions. y diagrams from question l to define [0.65, 0.82] Question 6 A mixture of40 % benzene and 60 % toluene is flashed to 2 bar, 395 K. Using the iterative method outlined in the notes, calculate the liquid and vapour compositions and the liquid fraction. For the first iteration, assume that 90.5 (0.35, 0.55, 0.77)
Constructing Equilibrium Diagrams Question 1 Construct an x – Tdiagram showing the compositions of the liquid and vapour phases for a mixture of benzene and toluene at (t) I bar and (ii) 2 bar. Assume that the Antoine equation holds and that the mixture can be described by Raoult's Law. The Antoine parameters are as follows rg benzene toluene 15.9008 6.0137 2788.51 3096.52 -52.36 -53.67 These data correspond to the form of the Antoine equation which takes a natural log, the pressure is in mmlHg and the temperature is in K. Question2 For the two cases considered above, plot x – y diagrams. What conclusions can be drawn? Question 3 For the two cases considered, plot α versus x. Question 4 Plot an x-y curve for a separation where the relative volatility is constant at 2.5. Sketch a line on this plot that corresponds to Henry's Law and find the Henry's Law constant. Binary Flash Question 5 a) A feed containing 45% benzene is flashed to l bar, 370 K. Using the x-T diagrams from question 1, define the liquid and vapour compositions and the fraction of the mixture which is liquid. [0.334, 0.551 , 0.465] 0 7, use the x b) A feed containing 30% toluene is flashed to 1 bar. If q the liquid and vapour compositions. y diagrams from question l to define [0.65, 0.82] Question 6 A mixture of40 % benzene and 60 % toluene is flashed to 2 bar, 395 K. Using the iterative method outlined in the notes, calculate the liquid and vapour compositions and the liquid fraction. For the first iteration, assume that 90.5 (0.35, 0.55, 0.77)
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