New Solubility Data of Hydrocarbons in Water and Modeling Concerning Vapor−Liquid−Liquid Binary Systems

Abstract

Solubility data in water of ethane, propane, isobutane, n-butane, n-pentane, and n-hexane have been obtained as a function of temperature in vapor−liquid−liquid equilibrium (VLLE) conditions. The minimum temperature of experiments is 288 K, while the maximum temperature, for each system, is lower than the critical temperature of the corresponding hydrocarbon. New solubility vs temperature correlations are given herein for the studied hydrocarbons in water. Henry's law and activity coefficients at infinite dilution are deduced from the experimental solubility data. Good agreement is found with available literature data.

Solubility of hydrocarbons in water: Experimental measurements and modeling using a group contribution with association equation of state (GCA-EoS)

“…(2)). Data: (×) Mokraoui [31], ( ) Tsonopoulos [25]. device (Desgranges et Huot, France, model 24610).…”

“…Solubility of iso-butane, iso-octane and cyclo-hexane in pure water. Symbols: experimental data: ( ) 2,2,4-trimethyl-pentane, this work; ( ) cyclo-hexane, this work; ( ) iso-butane [31]. Curves: predictions of GCA-EoS model.…”

“…4 presents the GCA-EoS model predictions for the solubilities of normal alkanes, C 2 -C 4 in water along with the final model correlation of n-C 5 and n-C 6 data. Table 10 presents the experimental data selected from the literature [31], the GCA-EoS model predictions, and the relative errors for each experimental point. The results show that by using a group contribution approach, the GCAEoS model is able to predict a change of four orders of magnitude in the solubility, going from normal hexane to ethane.…”

“…a Experimental data for iso-butane have been taken from Ref. [31] while experimental data for cyclo-hexane and iso-octane have been taken from Tables 4 and 5, respectively. Fig.…”

Experimental and molecular modelling study of the three-phase behaviour of (propane+carbon dioxide+water) at reservoir conditions

“…More recently, data for the water-rich phase at VLE conditions has been obtained by Chapoy et al [46] over a temperature range from (280 to 370) K andpressures < 4 MPa. Similarly, the water-rich phase has also been analysed by Mokraoui et al [47] this time at VLLE conditions and at temperatures ranging from (300 to 340) K and pressures below 3 MPa. At low temperatures, the system also presents fluid-hydrate equilibria, which have been studied by a number of authors [45,48,49].…”