Equilibrium phase properties of the toluene-hydrogen sulfide and heptane-hydrogen sulfide binary systems

Abstract

Vapor and llquld equilibrium phase compositions have been determined for the toluene-hydrogen sulflde and n-heptane-hydrogen sulflde binary systems at temperatures of 100.0!, 175.0, 250.0, and 400.0 O F at several pressures between the vapor pressure of the hydrocarbon component and the vapor pressure of hydrogen sulflde or thtr critical pressure for the system, whichever was higher. Refractive Index measurements were made on the equilibrium vapor and llquid phases for the hydrogen sulfide-m-heptane system at the three lower temperatures. These measurements were used with the phase composition data to calculate the equlllbrlum phase densltles using the Lorentr-Loren2 molar refractivity relationship.The solublllties of sulfur dioxide In water-acetonitrile solutions were determined at 25 and 50 OC and total pressure of 101.3 kPa. The solubilities are expressed In grams of sulfur dioxide dissolved/100 g of solute gas-free solution. At 25 OC two phases are observed when the overall composition lies between 20 and 80 wt % acetonitrile. The composition of each phase remains constant but the fraction of each phase Is altered as the overall composltlon changes. Above 40 OC only one phase is observed for i:he entire composition range.

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

“…The same model was used to treat the data measured by Ng et al [1], corresponding the parameters are presented in Table 5. The peculiarity of the data measured by Ng et al is that there are two temperatures both below and above the critical temperature of H 2 S. The deviations, MRDU, and the BIASU, on pressures and vapour phase mole fractions, are presented in Table 6.…”

“…We can mention the data of Ng et al [1] concerning the n-heptane hydrogen sulphide binary system. The PSRK model [2] is useful to predict vapour-liquid equilibrium data of binary systems when experimental data are missing.…”

Monte Carlo predictions for the phase behavior of H2 S+n-alkane, H2 S+CO2, CO2+CH4 and H2 S+CO2+CH4 mixtures

“…Simulation results are represented as 394.26 K (circle) and 477 K (square). The solid line represents experimental data (18). cant deviations in the predicted densities were observed when Lorentz-Berthelot combining rules were used, while the Kong combining rules (62) were found to yield results that were in closer agreement with experiment.…”

“…Tel. : +1 313 577 9357; fax: +1 313 577 3810. tane (16), hexane, cyclohexane, benzene, pentadecane (17), heptane (18), decane (19,20), n-eicosane (21), n-hexadecane, ntridecane, squalane (20), toluene (18), ethylcyclohexane, propylcyclohexane (22) and m-xylene (23). The phase envelopes for H 2 S + CO 2 (24) and H 2 S + water (25) have also been determined by experiment.…”

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

“…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.…”