Vapour–liquid equilibrium data for the hydrogen sulphide+n-heptane system at temperatures from 293.25 to 373.22K and pressures up to about 6.9MPa

Théveneau, Pascal; Coquelet, Christophe; Richon, Dominique

doi:10.1016/j.fluid.2006.09.021

Cited by 11 publications

(14 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This value is very close to the value obtained by Tang and Gross . In comparison to the experimental data , the calculated VLE are in excellent agreement over a broad temperature range (293 K < T < 477 K). The comparison of the experimental , results with the modeling results can be found in Figure .…”

Section: Resultssupporting

confidence: 88%

“…For the estimation of k ij , Tang and Gross used the experimental data of Ng et al measured with the static method in a temperature range of 310 K < T < 480 K. Théveneau et al performed also phase equilibrium measurements for the binary system H 2 S + heptane with a static-analytic method by sampling the liquid and the vapor phase at five different temperatures in a lower temperature range (293 K < T < 373 K). The results of these measurements were used to readjust the binary interaction parameter of the PC-SAFT-EOS. The k ij value was adjusted at T = 353.15 K to be 0.08.…”

Section: Resultsmentioning

confidence: 99%

“…The used experimental data are in the high temperature range. Theveneau et al measured also at lower temperatures, therefore we readjust the k ij -value for H 2 S + heptane. The only missing binary system is SO 2 + heptane.…”

Section: Theoretical Frameworkmentioning

confidence: 85%

“…These mixtures can be relevant to enhanced oil recovery if carbon dioxide is used to enhance the yield. Unfortunately, the experimental database related to these mixtures is sparsely. − The pure-component surface tensions are provided in the literature. , Bierlein et al measured the vapor–liquid equilibrium in terms of isopleths, critical line and the saturated gas and liquid volumes for the system CO 2 + H 2 S. The VLE of the system CO 2 + SO 2 were measured by Lachet et al using the static-analytical method. VLE data for the H 2 S + heptane as a function of temperature and pressure were measured by Théveneau et al and Ng et al Benoit and Milanova measured the total pressure over a SO 2 + heptane mixture and derived from these data the Henry constant.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Prediction of Interfacial Properties of Ternary, Sulfur-containing Mixtures

Bühl¹,

Enders²

2016

J. Chem. Eng. Data

View full text Add to dashboard Cite

Sulfur-containing gases, like SO 2 and H 2 S are toxic; therefore, experimental data are rare. However, these gases are important in many technical processes, for instance in enhanced oil recovery, where information about the phase behavior and the interfacial properties of mixtures with these gases are required. In this contribution, we investigated these properties theoretically using PCP-SAFT-EOS in combination with density gradient theory. We focus on ternary systems made of sulfurcontaining molecules, carbon dioxide and n-heptane representing the oil. With purecomponent parameters taken from the literature and binary interaction parameters taken also from the literature, except these for SO 2 + heptane and H 2 S + heptane, which were fitted in this work, the phase behavior of the corresponding ternaries over a large temperature and pressure range was predicted. Additionally, the interfacial tension as well as the partial density profiles across the interface were studied. The presence of sulfur compounds leads to a reduction of interfacial tension in comparison with the binary subsystem CO 2 + heptane. Additionally to the predictions polynomial expressions for calculation of surface tension as a function of liquid composition, temperature and pressure are provided in this work. This approach allows the representation of the surface tension of ternary systems very precisely with reduced numerical effort.

show abstract

Section: Resultssupporting

confidence: 88%

Section: Resultsmentioning

confidence: 99%

Section: Theoretical Frameworkmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Prediction of Interfacial Properties of Ternary, Sulfur-containing Mixtures

Bühl¹,

Enders²

2016

J. Chem. Eng. Data

View full text Add to dashboard Cite

show abstract

“…Data for hydrocarbon systems and related compounds were obtained from a variety of literature sources [8–51] . The first column in Table 1 enumerates the systems considered.…”

Section: Experimental Data Fittingmentioning

confidence: 99%

Semi-empirical correlation for binary interaction parameters of the Peng–Robinson equation of state with the van der Waals mixing rules for the prediction of high-pressure vapor–liquid equilibrium

Fateen

Khalil

Elnabawy

2013

Journal of Advanced Research

View full text Add to dashboard Cite

Peng–Robinson equation of state is widely used with the classical van der Waals mixing rules to predict vapor liquid equilibria for systems containing hydrocarbons and related compounds. This model requires good values of the binary interaction parameter kij. In this work, we developed a semi-empirical correlation for kij partly based on the Huron–Vidal mixing rules. We obtained values for the adjustable parameters of the developed formula for over 60 binary systems and over 10 categories of components. The predictions of the new equation system were slightly better than the constant-kij model in most cases, except for 10 systems whose predictions were considerably improved with the new correlation.

show abstract