Evaluation of translated-consistent equations of state compared for the prediction of the Joule-Thomson effect at high pressures and high temperatures

摘要

In this research, Joule-Thomson coefficients for pure, binary, ternary, and multicomponent systems are predicted using translated and consistent versions of Peng-Robinson and Redlich-Kwong equations of state. The former is claimed to be certainly the most accurate and the safest three-parameter cubic equation of state ever published. The obtained results are compared with the predictions provided by Peng-Robinson, Soave-Redlich-Kwong, Volume Translated Peng-Robinson, Volume Translated Soave-Redlich-Kwong, and Patel-Teja-Valderrama equations of state along with different alpha functions, including Peng - Robinson original form (1976), Coquelet et al. (2004), Haghtalab et al. (2011), Saffari - Zahedi (2013), Soave - Redlich - Kwong original form (1972), Ozokwelu - Erbar (1987), Trebble - Bishnoi (1987), Nasrifar - Bolland (2004), and Pina - Martinez et al. (2019). Furthermore, the obtained results are compared to the available experimental data. Moreover, the performance of translated-consistent Peng-Robinson and translated-consistent Redlich-Kwong equations of state is determined at low pressures (60 atm) up to high pressures (360 atm) in comparison to the other equations of state. The dependency of the Joule Thomson coefficient as a function of the mole fraction has been investigated. To compare better, Joule-Thomson inversion curves are also depicted for a variety of systems, containing pure, binary, ternary, and multicomponent mixtures. The obtained results are compared to the experimental data, correlated results, and molecular simulations. (C) 2020 Elsevier B.V. All rights reserved.