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Application of a generalized multiproperty apparatus to measure phase equilibrium and vapor phase densities of supercritical carbon dioxide in n-hexadecane systems up to 26 MPa |
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| Affiliation: | 1. Young Researchers and Elite Club, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran;2. Department of Petroleum Engineering, Petroleum University of Technology (PUT), Ahwaz, Iran;3. Young Researchers and Elite Club, North Tehran Branch, Islamic Azad University, Tehran, Iran;4. Young Researchers and Elite Club, Meybod Branch, Islamic Azad University, Meybod, Iran;5. School of Environment, Science and Engineering, Southern Cross University, Lismore, NSW, Australia |
| Abstract: | A high pressure multi-property apparatus has been developed to measure several thermodynamic and transport properties. In this study the apparatus has been applied to measure phase and volumetric properties of supercritical carbon dioxide in hexadecane from low pressures to the very vicinity of the critical pressure. The experimental data have been successfully fitted over the entire range of the experiment using the Wilson—Wegner expansion including the use of the latter to obtain an improved estimate of the critical pressure and composition.The relation between the occurrence of multiple condensed phases (at some lower temperature) and supercritical extraction is discussed. |
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