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Phase Equilibria Experimental at High Pressure

Phase Equilibria Experimental at High Pressure. Principle Investigator: Yan-Ping Chen Research Worker: Kong - Wei Cheng Department of Chemical Engineering National Taiwan University. Research Topic. Vapor - Liquid Equilibria of Esters in Carbon dioxide at Elevated Pressure

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Phase Equilibria Experimental at High Pressure

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  1. Phase Equilibria Experimental at High Pressure Principle Investigator: Yan-Ping Chen Research Worker: Kong - Wei Cheng Department of Chemical Engineering National Taiwan University

  2. Research Topic Vapor - Liquid Equilibria of Esters in Carbon dioxide at Elevated Pressure Solubilities in Supercritical Carbon dioxide Ternary Systems in Supercritical Carbon dioxide

  3. Apparatus in Literature (1) Analytical Method (a) Static Type Apparatus (b) Flow Type Apparatus (2) Synthetic Method (a) Visual Synthetic Method (b) Non-Visual Synthetic Method

  4. Experimental Apparatus for VLE in This Study

  5. Correlation for Experimental Data (a) Krichevsky – Ilinskaya (KI) Equation (b) Equation of State with Mixing Rules

  6. Equation of State Using in This Study (1) Peng – Robinson (PR) EOS (2) Soave-Redlich-Kwong (SRK) EOS

  7. Mixing Rules Using in This Study (a) van der Waals one-fluid mixing rules (b) VDW2 mixing rule (c) Panagiotopoulos – Reid mixing rule (d) Huron – Vidal mixing rule

  8. Parameters of the KI equation for three binary systems

  9. Correlated results of experimental VLE data of three binary mixtures using various and EOS mixing rules

  10. VLE results of the binary mixture of CO2 (1) + diethyl oxalate (2)

  11. Solubilities of CO2 in various ester compounds at 328.15 K

  12. Solubilities of various ester compounds in supercritical CO2 at 328.15 K

  13. Apparatus for Solubility in Literature Semi-Flow type apparatus (a) weighting method (b) on-line analysis (c) washing and analysis Recycle type apparatus (a) on line analysis (b) washing and analysis

  14. Schematic diagram of the experimental apparatus for solubility in supercritical fluids in this study

  15. Comparison of the solubility data of phenanthrene in supercritical carbon dioxide at 308.15 K

  16. Equilibrium Criterion (a)Use the mass transfer method to ensure the equilibrium (b)Find the optimal operation condition (c)Find the min time to reach the phase equilibrium

  17. Fluid - solid mass transfer Two type of mixing states will be considered for the fluid flowing in the equilibrium cell (a) Mixing - flow case (b) Plug - flow case

  18. Plug flow case • For plug flow case

  19. Solution of plug flow case

  20. Parameter Identification

  21. Thermodynamic and mass transport data for CO2 (1) + Benzoin (2) at different operating conditions

  22. Equation of State Using in This Study (a) Peng –Robinsion (PR) EOS (b) Soave-Redlich-Kwong (SRK) EOS

  23. Mixing Rules Using in This Study (a) van der Waals one-fluid mixing rules (b) VDW2 mixing rule (c) Huron-Vidal mixing rule

  24. Correlated results of solubility data in supercritical carbon dioxide using various EOS mixing rules

  25. Correlated results of the experimental solubility data in supercritical carbon dioxide by the Huron-Vidal mixing rules

  26. Data Correlation Empirical model (a) Chrastil (1982) (b) Teja method (1999)

  27. Correlated results of the experimental solubility data in supercritical carbon dioxide by the empirical model

  28. Solubility data for benzoin in supercritical carbon dioxide

  29. Solubility data of various compounds in supercritical CO2 at 328.15 K

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