1 / 30

ITK-234 Termodinamika Teknik Kimia II

ITK-234 Termodinamika Teknik Kimia II. VLE Calculations for Nonideal Mixtures. Dicky Dermawan www.dickydermawan.net78.net dickydermawan@gmail.com. Modified Raoult’s Law K-value Method VLE using Equation of States. Dicky Dermawan.

nimrod
Download Presentation

ITK-234 Termodinamika Teknik Kimia II

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ITK-234 Termodinamika Teknik Kimia II VLE Calculations for Nonideal Mixtures DickyDermawan www.dickydermawan.net78.net dickydermawan@gmail.com

  2. Modified Raoult’s Law K-value MethodVLE using Equation of States Dicky Dermawan

  3. Incorporation of fugacity and activity coefficient to vle criteria results: where However, at low pressure (up to at least 1 bar): The Poynting Factor 1 Modified Raoult’s Law:

  4. Modified Raoult’s Law:Wilson Equation for calculating  Prepare a P-x-y diagram at 80oC Prepare a t-x-y diagram at 101,33 kPa

  5. Modified Raoult’s Law:Wilson Equation for calculating  (Cont’) Use your diagram to answer there questions: Given P = 70 kPa, T = 80oC & overall composition, z1=30% Find the fraction of system which is liquid (L) & vapor (V) and their respective compositions xi & yi

  6. Modified Raoult’s Law:Wilson Equation for calculating  Prepare a P-x-y diagram at 80oC Prepare a t-x-y diagram at 101,33 kPa

  7. Modified Raoult’s Law:Wilson Equation for calculating  (Cont’) Use your diagram to answer there questions:

  8. Modified Raoult’s Law:Wilson Equation for calculating 

  9. Modified Raoult’s Law:Wilson Equation for calculating 

  10. Modified Raoult’s Law:Wilson Equation for calculating 

  11. Modified Raoult’s Law:Wilson Equation for calculating 

  12. Modified Raoult’s Law:Wilson Equation for calculating 

  13. Modified Raoult’s Law:Wilson Equation for calculating 

  14. Modified Raoult’s Law:Wilson Equation for calculating 

  15. Modified Raoult’s Law:Wilson Equation for calculating 

  16. Modified Raoult’s Law:NRTL Equation for calculating  Prepare a P-x-y diagram at 80oC Prepare a t-x-y diagram at 101,33 kPa

  17. Modified Raoult’s Law:NRTL Equation for calculating 

  18. VLE Calculation Using No Diagram Answer the questions (a) through (e) from12.6 to 12.13 but don’t use the phase diagram to obtain the answers

  19. Estimating Azeotrophic Condition,Use No Diagram

  20. K-Value Method:Using De Priester Charts for light hidrocarbons The nomographs K = f(T,P) prepared by De Priester provide easy application of this approach to practical problem

  21. K-Value Method:Using De Priester Charts for light hidrocarbons High Temperature Range

  22. K-Value Method:Using De Priester Charts for light hidrocarbons Low Temperature Range

  23. Type of Phase Equilibria Calculations BUBL P calculation: Given T & liquid composition xi, Find the bubble point Pb & vapor composition DEW P calculation: Given T & vapor composition yi, Find the bubble point Pb & vapor composition Assume P, find Ki satisfying: Assume P, find Ki satisfying:

  24. Type of Phase Equilibria Calculations BUBL t calculation: Given P & liquid composition xi, Find the bubble point Pb & vapor composition DEW t calculation: Given P & vapor composition yi, Find the bubble point Pb & vapor composition Assume t, find Ki satisfying: Assume t, find Ki satisfying:

  25. K-Value Method:Using De Priester Charts for light hidrocarbons

  26. K-Value Method:Using De Priester Charts for light hidrocarbons

  27. Type of Phase Equilibria Calculations FLASH calculation: Given P, T & overall composition, Find the fraction of system which is liquid (L) & vapor (V) and their respective compositions xi & yi Make sure P located between Pb dan Pd, i.e. Perform BUBL P for zi =xi and Perform DEW P for zi = yi Find Ki ; assume Vsatisfying: or: or: The General Solution Procedure

  28. K-Value Method:Using De Priester Charts for light hidrocarbons

  29. K-Value Method:Using De Priester Charts for light hidrocarbons

  30. K-Value Method:Using De Priester Charts for light hidrocarbons

More Related