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Received October 11, 2013
Accepted February 3, 2014
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Suggestion of mixing rule for parameters of PRμ model for light liquid hydrocarbon mixtures
School of Chemical, Gas and Petroleum Engineering, Semnan University, Semnan, Iran
Korean Journal of Chemical Engineering, July 2014, 31(7), 1246-1252(7), 10.1007/s11814-014-0043-1
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Abstract
Our aim is to improve the predictions for the viscosities of selected light liquid hydrocarbon mixtures by using a reliable model based on Peng-Robinson equation of state (PR EOS). Therefore, a viscosity model on the basis of the similarity between PvT and Tμ (viscosity) P has been applied. Based on the volume-translated Peng-Robinson equation of state (VTPR EOS), a correction has been used for viscosity to improve the results of model. The viscosity model can be extended to mixtures by using an appropriate mixing rule for the parameters of the PR model. For a better description of viscosity and improvement of some calculation results, a mixing rule has been proposed for the parameters of the model. The results of the model show that the agreement between experimental and the calculated viscosities is reasonably good and noticeable improvements can be seen in the results of some calculations.
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Patel NC, Teja AS, Chem. Eng. Sci., 37, 463 (1982)
Lee LS, Lee YS, Fluid Phase Equilib., 181(1-2), 47 (2001)
Cao W, Knudsen K, Fredenslund A, Rasmussen P, Ind. Eng. Chem. Res., 32, 2077 (1993)
Martins RJ, Cardoso MJED, Barcia OE, Ind. Eng. Chem. Res., 42(16), 3824 (2003)
Peng DY, Robinson DB, Ind. Eng. Chem. Fundam., 15, 59 (1976)
Soave G, J. Chem. Eng. Sci., 27, 1197 (1972)
Stryjek R, Vera JH, Can. J. Chem. Eng., 64, 323 (1986)
Uyehara OA, Watson KM, Natl. Pet. News., 36, 714 (1944)
Huber ML, Laesecke A, Xiang HW, Fluid Phase Equilib., 224(2), 263 (2004)
Barrufet MA, Salem SK, Tantawy M, Iglesiassilva GA, J. Chem. Eng. Data, 41(3), 436 (1996)
Tan SP, Adidharma H, Towler BF, Radosz M, Ind. Eng. Chem. Res., 45(6), 2116 (2006)
Wang ZF, Wang LS, Fan TB, J. Chem. Eng. Data, 52(5), 1866 (2007)
Poling BE, Prausnitz JM, O’Connell JP, The Properties of Gases and Liquids, McGraw-Hill Education, Asia (2001)
Millat J, Dymond JH, Castro CANd, Transport properties of fluids: Their correlation prediction and estimation, Cambridge University Press, New York (1996)
