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Determination of Solubility and Density in Acidic Gas Absoption Systems by Ionic Liquids by Means of Cubic Equations of State

Askari, Amir Ashkan | 2018

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 51297 (07)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Ghotbi, Cyrus; Jalili, Amir Hossein
  7. Abstract:
  8. Due to their low volatility, negligible flammability, and high regeneration capacity, ionic liquids have attracted a lot of attention in chemical and process engineering fields. Regarding the limited access to the laboratory facilities, developing theoretical methods such as equations of state is important in this research field. Thus, data for density and viscosity of pure ionic liquids and vapor pressure data for binary mixtures of ionic liquids and acidic gas have been collected and validated from the IL Thermo website for 42 ionic liquids. By consideration of theoretical studies and comparison of the performance of different cubic equations of state in predicting the aforementioned properties, a specific form of Redlich-Kwong equations of state has been designed and optimized which can predict, simultaneously and seamlessly density, volumetric derivative properties and viscosity for pure ionic liquids and also vapor – liquid phase equilibrium for the acidic gas absorption systems. The accuracies of these calculations have been lower than the uncertainty in the empirical data that were the basis of this work. The superiority of new form of the cubic the equation of state in comparison with other cubic equations of state has been shown and interpreted
  9. Keywords:
  10. Cubic State Equations ; Ionic Liquids ; Solubility ; Density ; Acidic Gas Absorption ; Generic Redlich-Kwong (ERK) State Equation

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