Abstract:in Wiley Online Library (wileyonlinelibrary.com).The Cubic-Plus-Association (CPA) equation of state is applied to a large variety of mixtures containing H 2 S, which are of interest in the oil and gas industry. Binary H 2 S mixtures with alkanes, CO 2 , water, methanol, and glycols are first considered. The interactions of H 2 S with polar compounds (water, methanol, and glycols) are modeled assuming presence or not of cross-association interactions. Such interactions are accounted for using either a combining… Show more
“…water-alcohol-hydrocarbons has been illustrated [6,7,26], only very recently multicomponent mixtures with acid gases (H 2 S) have been considered (Tsivintzelis et al [27]). We evaluate here the performance of the model for multicomponent mixtures with CO 2 .…”
Section: Modeling the Phase Equilibria For Multicomponent Mixtures Wimentioning
confidence: 99%
“…CO 2 was modeled assuming one site. Pure fluid parameters were adopted from previous studies [27,36], unless otherwise indicated in the text. All binary interaction parameters were adopted from the corresponding binary systems (using VLE and/or LLE data) and they are presented, for the three systems, in Tables 1-3. Takahashi et al [28] report the solubility of CO 2 in aqueous TEG solutions at various temperatures as a function of pressure.…”
Section: Modeling the Phase Equilibria For Multicomponent Mixtures Wimentioning
“…water-alcohol-hydrocarbons has been illustrated [6,7,26], only very recently multicomponent mixtures with acid gases (H 2 S) have been considered (Tsivintzelis et al [27]). We evaluate here the performance of the model for multicomponent mixtures with CO 2 .…”
Section: Modeling the Phase Equilibria For Multicomponent Mixtures Wimentioning
confidence: 99%
“…CO 2 was modeled assuming one site. Pure fluid parameters were adopted from previous studies [27,36], unless otherwise indicated in the text. All binary interaction parameters were adopted from the corresponding binary systems (using VLE and/or LLE data) and they are presented, for the three systems, in Tables 1-3. Takahashi et al [28] report the solubility of CO 2 in aqueous TEG solutions at various temperatures as a function of pressure.…”
Section: Modeling the Phase Equilibria For Multicomponent Mixtures Wimentioning
“…For pure component parameters, we used the values reported by Tsivintzelis [20,21] and listed in Table 2. Water is considered as 4-site associating components (two electron donor and two electron acceptor) whereas carbon dioxide only contains two electron acceptor.…”
Section: Cubic-plus-association Equation Of Statementioning
confidence: 99%
“…It is therefore assumed that carbon dioxide molecules cannot form hydrogen bond among themselves; they only form cross hydrogen bonding with water. For the values of cross hydrogen bonding parameters, we used the values provided by Tsivintzelis [20,21] and listed in Table 2. …”
Section: Cubic-plus-association Equation Of Statementioning
confidence: 99%
“…Even with advanced equations of state approaches it was still difficult to properly describe the complex behavior of such mixtures. Recently, the cubic-plusassociation equation of state (CPA EOS) proposed by Kontogeorgis and coworkers are attracting attention among researchers with the ability to represent complex systems [19][20][21][22]. A modified version of the CPA EOS by Perakis et al [22]; called CPA-PR EOS, was reported to give very satisfactory results for water-carbon dioxide-acetic acid and water-ethanol-carbon dioxide systems by treating carbon dioxide as a solvating molecule (only cross-associating with other self-associating molecule).…”
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