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VLE Using HYSYS for Methanol Methyl Acetate
- 1. August 26, 2010 1 Vapor / Liquid Equilibrium Using HYSYS Prepared by: A.N.Tabish Lab. Engineer / Lecturer Department of Chemical Engineering UET, City Campus, Lahore tabish288@yahoo.com
- 2. 2 Example # 10.3:* For the system methanol (1) / methyl acetate (2) , the following equations provide a reasonable correlation for the activity coefficient Where, In addition following equations provide vapor pressures: Where T is in kelvin and the vapor pressure are in kPa. * J.M.Smith, H.C.Van Ness and M.M.Abott (2005), “Introduction to Chemical Engineering Thermodynamics”, Ed. 7, pp. 359, McGraw Hill August 26, 2010 tabish288@yahoo.com
- 3. August 26, 2010 3 CALCULATE: P and {y1}, for T = 318.15 K and {x1}= 0.25 P and {x1}, for T = 318.15 K and {y1}= 0.60 T and {y1}, for P = 101.33kPa and {x1}= 0.85 T and {x1}, for P = 101.33kPa and {y1}= 0.40 tabish288@yahoo.com
- 7. Draw the PFD (material streams)
- 9. Determine composition using K-Value informationtabish288@yahoo.com
- 10. August 26, 2010 5 HYSYS: tabish288@yahoo.com
- 12. Define components (Methanol + Methyl Acetate).tabish288@yahoo.com
- 16. August 26, 2010 10 BUBL Pressure: P and {y1}, for T = 318.15 K and {x1}= 0.25 73.50 kPa in manual calculations tabish288@yahoo.com
- 17. August 26, 2010 11 Vapor compositions: y1 = 0.282 y2 = 0.718 y1 = 0.278 y2 = 0.722 tabish288@yahoo.com
- 18. August 26, 2010 12 DEW Pressure: P and {x1}, for T = 318.15 K and {y1}= 0.60 62.89 kPa in manual calculations tabish288@yahoo.com
- 19. August 26, 2010 13 Liquid compositions: x1 = 0.8169 x2 = 0.1831 x1 = 0.8099 x2 = 0.1901 tabish288@yahoo.com
- 20. August 26, 2010 14 BUBL Temperature: T and {y1}, for P = 101.33kPa and {x1}= 0.85 331.20K = 58 oCin manual calculations tabish288@yahoo.com
- 21. August 26, 2010 15 Vapor compositions: y1 = 0.670 y2 = 0.330 y1 = 0.671 y2 = 0.329 tabish288@yahoo.com
- 22. August 26, 2010 16 DEW Temperature: T and {x1}, for P = 101.33kPa and {y1}= 0.40 326.70K = 53.7 oC in manual calculations tabish288@yahoo.com
- 23. August 26, 2010 17 Liquid compositions: x1 = 0.4602 x2 = 0.5398 x1 = 0.4517 x2 = 0.5483 tabish288@yahoo.com
- 25. Go to the Simulation Environment
- 26. Go to Tools/Preferences/Extensions and Click on Register an Extension.
- 27. Find EqPlots.dll and open it. This will remain part of HYSYS or UniSim on your machine until it is Unregistered. Close Preference.
- 28. Go to Flowsheet/Add Operation. Select the Extensions category and Add Equilibrium Plots. This should open the equilibrium plots extension.
- 29. For a Binary plot, click the Binary tab at the bottom of the Equilibrium Plots menu, and select the components and the type of plot desired.
- 30. For an XY plot, specify either T or P, and click on Plot.
- 31. For a TXY plot, specify P. For a PXY plot, specify T.tabish288@yahoo.com
- 32. August 26, 2010 19 tabish288@yahoo.com
- 33. August 26, 2010 20 tabish288@yahoo.com
- 34. August 26, 2010 21 tabish288@yahoo.com
- 35. August 26, 2010 22 Example # 10.4:* For a mixture of 10 mol-% methane, 20 mol-% ethane, and 70 mol-% propane at 50 (oF), determin: The dew point pressure The bubble point pressure * J.M.Smith, H.C.Van Ness and M.M.Abott (2005), “Introduction to Chemical Engineering Thermodynamics”, Ed. 7, pp. 364, McGraw Hill tabish288@yahoo.com
- 36. August 26, 2010 23 Home Work Task: Assuming the validity of Raoult's law, do the following calculations for the benzene (l)/toluene (2) system: For the system ethyl ethanoate (1) and n-heptane (2)at 343.15 K (70"C) BUBL P calculation for T = 343.15 K (70°C), x1 = 0.05. DEW P calculation for T = 343.15 K (70°C), y1 = 0.05. tabish288@yahoo.com
- 37. August 26, 2010 24 Home Work Task Contd…. Make the following VLE calculations for the methane (l) / ethylene (2) / ethane (3) system: tabish288@yahoo.com