Korean Journal of Chemical Engineering, Vol.28, No.3, 939-948, March, 2011
Modifying GMA equation of state for description of (P, ρ, T) relation of gas and liquids over an extended pressure range
E-mail:
The main concern of this paper is on the improvement of the GMA equation of state (Fluid Phase Equilibr. 230 (2005) 170) which has been used for density calculation of components in liquid region with excellent accuracy. However, the GMA equation of state cannot predict the density of components in either the gas or gas-liquid transition region. The GMA equation of state is based on intermolecular potential energy; therefore, the potential energy of the GMA equation of state is corrected and an equation of state is obtained. The final form of the new equation of state
is a regularity between (Z.1)v3 and ρ for all temperatures, which is based on modified Lennard-Jones potential (9, 6, 3). The capability of the new equation of state is examined by comparing the results with experimental data in homogeneous gas, homogeneous liquid and gas-liquid transition region from low to very high pressures. The new equation of state gives excellent results in homogeneous gas and homogeneous liquid region, while the predictions in the gas-liquid transition have more deviations. The average absolute deviation between calculated and experimental densities for 1979 data points of 24 components is 0.25% over the entire range of data with a maximum pressure of 1,000 MPa.
- Hwang J, Kim CH, Lim GB, Korean J. Chem. Eng., 12(2), 244 (1995)
- Lim JS, Yoon CH, Yoo KP, Korean J. Chem. Eng., 26(6), 1754 (2009)
- Parsafar G, Mason EA, J. Phys. Chem., 97, 9048 (1993)
- Ghatee MH, Bahadori M, J. Phys. Chem. B, 105(45), 11256 (2001)
- Goharshadi EK, Morsali A, Abbaspour M, Fluid Phase Equilib., 230(1-2), 170 (2005)
- Goharshadi EK, Moosavi F, Fluid Phase Equilib., 238(1), 112 (2005)
- Goharshadi EK, Abareshi M, Fluid Phase Equilib., 268(1-2), 61 (2008)
- Goharshadi EK, Moosavi M, Ind. Eng. Chem. Res., 44(17), 6973 (2005)
- Moosavi M, Goharshadi EK, Int. J. Thermophys., 27, 1515 (2006)
- Goharshadi EK, Moosavi M, J. Mol. Liq., 142, 41 (2008)
- Klimeck J, Kleinrahm R, Wagner W, J. Chem. Thermodyn., 30(12), 1571 (1998)
- Klimeck J, Kleinrahm R, Wagner W, J. Chem. Thermodyn., 33(3), 251 (2001)
- Younglove BA and Olien NA, Tables of Industrial Gas Container Contents and Density for Oxygen, Argon, Nitrogen, Helium, and Hydrogen, National Bureau of Standards Technical Note 1079, Washington (1985)
- Capla L, Buryan P, Jedelsky J, Rottner M, Linek J, J. Chem. Thermodyn., 34(5), 657 (2002)
- Eggenberger R, Gerber S, Huber H, Searles D, Welker M, J. Chem. Phys., 99, 9163 (1993)
- Robertson SL, Babb SE, J. Chem. Phys., 53, 1094 (1970)
- Robertson SL, Babb SE, J. Chem. Phys., 51, 1357 (1969)
- Troncoso J, Bessieres D, Cerdeirina CA, Carballo E, Romani L, J. Chem. Eng. Data., 49, 923 (2004)
- Lugo L, Comunas MJP, Lopez ER, Fernandez J, Fluid Phase Equilib., 186(1-2), 235 (2001)
- Gardas RL, Johnson I, Vaz DMD, Fonseca IMA, Ferreira AGM, J. Chem. Eng. Data., 52, 737 (2007)
- Miyamoto H, Uematsu M, J. Chem. Thermodyn., 39(4), 588 (2007)
- Miyake Y, Baylaucq A, Plantier F, Bessieres D, Ushiki H, Boned C, J. Chem. Thermodyn., 40(5), 836 (2008)
- Tome LIN, Carvalho PJ, Freire MG, Marrucho IM, Fonseca IMA, Ferreira AGM, Coutinho JAP, Gardas RLJ, J. Chem. Eng. Data., 53, 1914 (2008)
- Zuniga-Moreno A, Galicia-Luna LA, Camacho-Camacho LE, J. Chem. Thermodyn., 39(2), 254 (2007)
- Vong WT, Tsai FN, J. Chem. Eng. Data, 42(6), 1116 (1997)
- Grindley T, Lind JE, J. Chem. Phys., 54, 3983 (1971)
- Gupta RB, Shim JJ, Solubility in Supercritical Carbon Dioxide, CRC Press, Florida (2007)
- Funke M, Kleinrahm R, Wagner W, J. Chem. Thermodyn., 34(12), 2001 (2002)
- Duarte CMM, Guedes HJR, da Ponte MN, J. Chem. Thermodyn., 32(7), 891 (2000)
- Glos S, Kleinrahm R, Wagner W, J. Chem. Thermodyn., 36(12), 1037 (2004)