Measurement of VLE (TPx or TPxy data) for hydrogen sulfide+(dimethylsulfide or ethylmethylsulfide or carbon disulfide) and methane solubilities in (dimethylsulfide or ethylmethylsulfide or methylmercaptan or ethylmercaptan)

Phase Equilibria of Three Binary Mixtures: Methanethiol + Methane, Methanethiol + Nitrogen, and Methanethiol + Carbon Dioxide

“…The authors also report the modeling of limited solubility data (PTx) of CH 3 SH + CH 4 available in the open literature. 13 To the best of our knowledge, prior to this study there were no experimental data for the solubility of methanethiol with N 2 and CO 2 at high pressures and different temperatures. The CPA parameters, that is, b, Γ = a 0 /(Rb), and c 1 , have been fitted to experimental vapor pressure and liquid density data as shown in Table 5.…”

“…They could not extend the PPR-78 model for thiols due to the unavailability of the experimental data for (mercaptan + CO 2 ) and (mercaptan + N 2 ). The authors also report the modeling of limited solubility data ( PTx ) of CH 3 SH + CH 4 available in the open literature . To the best of our knowledge, prior to this study there were no experimental data for the solubility of methanethiol with N 2 and CO 2 at high pressures and different temperatures.…”

Addition of the sulfhydryl group (–SH) to the PPR78 model (predictive 1978, Peng–Robinson EOS with temperature dependent kij calculated through a group contribution method)

“…The DIPPR database was chosen. Table 3 details the sources of the binary experimental data used in our evaluations [27][28][29][30][31][32][33][34][35][36][37][38] along with the temperature, pressure, and composition ranges for each binary system. Most of the data available in the open literature (731 bubble points + 320 dew points + 58 azeotropic points) were collected.…”

“…Prediction of phase equilibria for systems containing hydrocarbons, CO 2 , N 2 , H 2 S, and mercaptans: A general overview 3.1. A priori reflections regarding the study By looking at the experimental data [27][28][29][30][31][32][33][34][35][36][37][38] of binary systems containing mercaptans and a hydrocarbon or CO 2 or N 2 or H 2 S, we can notice that the only particularity likely to arise on these phase diagrams is the presence of a homogeneous azeotropic point [39] (for instance, (liquid À liquid) equilibrium has never been noticed experimentally). It thus seems logical to consider that binary systems with mercaptans essentially exhibit type I behavior in the classification scheme of van Konynenburg and Scott [40].…”

An improved static–analytic apparatus for vapor–liquid equilibrium ( PTxy ) measurement using modified in-situ samplers

“…Guilbot et al [15] described in detail the Rapid On-Line Sampler-Injector (ROLSI TM ) allowing in-situ withdrawals of microliters of phase samples. It has been used for numerous measurements afterwards [16][17][18][19]. The sampling can be achieved through the ROLSI TM sampler, as long as the cell pressure exceeds that of the carrier gas for gas chromatograph (GC), usually around 3 bar.…”