A semi-empirical equation of state has been studied for modelling vapour-liquid data of pure substances. The specific molecular based equation of state is employed here as basis because of its mathematical simplicity. The semi-empirical extension has been accomplished to real fluids by correlating the density dependence of the attraction term to vapour liquid data of a reference fluid. The resu...

In this paper, we calculate the second virial coefficient for binary mixtures of Ar with CH4 and CO in order to evaluate the performance of equations of state (EOSs). The investigated EOSs are van der Waals (vdW), Redlich-Kwong (RK), Peng-Robinson (PR), Carnahan-Starling–van der Waals (CS-vdW) and Guggenheim-van der Waals (G-vdW) based on van der Waals model. In our work, we also use Dieterici ...

The guidelines to constitute a database containing, for 1800 pure fluids, more than 300,000 pseudo-experimental vapor pressure, liquid density, enthalpy of vaporization, and heat capacity data are described. Such provides tool fair assessment the performances equations state correlate (or predict) properties components. In this paper, we use it assess performance four cubic (CEoSs): original So...

Carbon capture and storage (CCS) has attracted renewed interest in the re-evaluation of equations state (EoS) for prediction thermodynamic properties. This study also evaluates EoS Peng–Robinson (PR) Soave–Redlich–Kwong (SRK) their capability to predict properties CO2-rich mixtures. The investigation was carried out using machine learning such as an artificial neural network (ANN) a classified ...

New isothermal vapor–liquid equilibrium (VLE) data for the carbon dioxide + 1,4-dioxane system are reported at four temperatures (323.15, 333.15, 343.15, and 353.15) K pressures up to 122.7 bar. The critical curve was also measured 158.8 bar 420.15 K. Phase behavior measurements were performed in a high-pressure windowed cell with variable volume, using static-analytical method phases sampling ...

In this contribution, two approaches are followed to predict the saturated liquid density of liquefied natural gas (LNG) mixtures. In one approach, 12 cubic equations of state (EoSs), comprising the popular Peng-Robinson (PR) and Redlich-Kwong-Soave (RKS), are employed to predict the saturated liquid density of 20 LNG mixtures. In the other approach, these EoS are used in conjunction with a rec...

Evaluation of common compositional models and PVT correlations are carried out against field data for light crude oil from north Iraqi reservoirs. The reported the evaluation significant to Petroleum industry, as various international local companies operate in this region. comprehensive program MultiflashTM 7.2 is utilized, employing Peng-Robinson (1976) Redlich-Kwong-Soave (1972). formation v...

ISSN 1860-3122 300 Anti–cancer Nano drugs separation is investigated as one of the most important steps of a process. An important technique of anti–cancer Nano drugs separation is by means of supercritical fluids. Fluids such as Ozone (O3) show an increase in their solubility when they enter the zone of supercritical condition. The application of supercritical fluids is preferred in the separa...

O uso softwares como Microsoft Excel ou LibreOffice Calc para ensinar e exemplificar exercícios envolvendo modelos termodinâmicos é de fácil implementação em sala aula. Dessa forma, o objetivo do presente estudo foi avaliar a densidade dióxido carbono (CO2) estado supercrítico através 4 equações distintas (Peng-Robinson, Redlich–Kwong, Soave Redlich–Kwong van der Waals) dos parâmetros temperatu...

in this contribution, two approaches are followed to predict the saturated liquid density of liquefied natural gas (lng) mixtures. in one approach, 12 cubic equations of state (eoss), comprising the popular peng-robinson (pr) and redlich-kwong-soave (rks), are employed to predict the saturated liquid density of 20 lng mixtures. in the other approach, these eos are used in conjunction with a rec...