High pressure phase equilibria in methane + waxy systems. 2. Methane + waxy ternary mixture |
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Authors: | Jé rô me Pauly,Joã o A.P. Coutinho,Jean-Luc Daridon |
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Affiliation: | 1. Laboratoire des Fluides Complexes, Université de Pau, BP 1155, 64013 Pau Cedex, France;2. CICECO, Departemento de Química, Universidade de Aveiro – 3810-193 Aveiro, Portugal |
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Abstract: | Liquid–vapour and fluid–solid phase transitions were experimentally determined under pressure on the system methane + a ternary waxy mixture using a full visibility cell. The wax was an approximately equimolar mixture of n-C16, n-C17 and n-C18, the composition being chosen to obtain a mixture with an average molecular weight similar to heptadecane. Measurements were performed according to the synthetic method on different mixtures ranging from 0 to 99.5 mol% of methane. The liquid–solid phase transitions were investigated up to 100 MPa and fluid phase boundary was studied in the temperature domain from 293 to 373 K. Measurements performed on this pseudo-binary system were compared to the phase diagram of the binary system methane + heptadecane. |
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Keywords: | Experimental Vapour&ndash solid&ndash liquid equilibrium Methane Wax Paraffin |
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