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Phase equilibria of mixtures containing organic sulfur species (OSS) and water / hydrocarbons / Javeed A. Awan in Industrial & engineering chemistry research, Vol. 49 N° 24 (Décembre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 24 (Décembre 2010) . - pp. 12718–12725 Titre : Phase equilibria of mixtures containing organic sulfur species (OSS) and water / hydrocarbons : VLE measurements and modeling using the cubic - plus - association equation of state Type de document : texte imprimé Auteurs : Javeed A. Awan, Auteur ; Ioannis Tsivintzelis, Auteur ; Martin P. Breil, Auteur Année de publication : 2011 Article en page(s) : pp. 12718–12725 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Organic  sulfur  Hydrocarbons Résumé : We report new vapor−liquid equilibrium (VLE) data for dimethyl sulfide (DMS) in pure water, performed at three temperatures (303, 330, and 362 K) in the 1−8 MPa pressure range. The total system pressure was maintained introducing CH4. The inlet mole fraction of DMS was the same in all experiments, around 1.5 × 10−3 in the liquid phase. A “static-analytic” method was used for performing all of the measurements. The objective is to provide experimental VLE data for the dimethyl sulfide + CH4 + water system, for which no data are available in the open literature. These data will allow industry to model sulfur emissions. The new VLE data as well as the VLE data of some binary systems from the literature containing organic sulfur species + hydrocarbon, organic sulfur species + water, and some ternary systems containing organic sulfur species in hydrocarbons and water have been modeled successfully with the cubic-plus-association (CPA) equation of state. Useful remarks are presented about the application of Henry’s constant values to estimate binary interaction parameters of the CPA EoS for the description of whole vapor−liquid equilibria. The results using CPA EoS show that the cross association interactions in the methyl mercaptan + water system and ethyl mercaptan + water system should be considered. In aqueous mixtures of higher mercaptans, the consideration of such interactions does not improve the calculations, indicating that they are rather weak. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101470b [article] Phase equilibria of mixtures containing organic sulfur species (OSS) and water / hydrocarbons : VLE measurements and modeling using the cubic - plus - association equation of state [texte imprimé] / Javeed A. Awan, Auteur ; Ioannis Tsivintzelis, Auteur ; Martin P. Breil, Auteur . - 2011 . - pp. 12718–12725. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 24 (Décembre 2010) . - pp. 12718–12725 Mots-clés : Organic  sulfur  Hydrocarbons Résumé : We report new vapor−liquid equilibrium (VLE) data for dimethyl sulfide (DMS) in pure water, performed at three temperatures (303, 330, and 362 K) in the 1−8 MPa pressure range. The total system pressure was maintained introducing CH4. The inlet mole fraction of DMS was the same in all experiments, around 1.5 × 10−3 in the liquid phase. A “static-analytic” method was used for performing all of the measurements. The objective is to provide experimental VLE data for the dimethyl sulfide + CH4 + water system, for which no data are available in the open literature. These data will allow industry to model sulfur emissions. The new VLE data as well as the VLE data of some binary systems from the literature containing organic sulfur species + hydrocarbon, organic sulfur species + water, and some ternary systems containing organic sulfur species in hydrocarbons and water have been modeled successfully with the cubic-plus-association (CPA) equation of state. Useful remarks are presented about the application of Henry’s constant values to estimate binary interaction parameters of the CPA EoS for the description of whole vapor−liquid equilibria. The results using CPA EoS show that the cross association interactions in the methyl mercaptan + water system and ethyl mercaptan + water system should be considered. In aqueous mixtures of higher mercaptans, the consideration of such interactions does not improve the calculations, indicating that they are rather weak. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101470b

Vapor – liquid – liquid equilibrium measurements and modeling of the Methanethiol + Methane + Water ternary system at 304, 334, and 364 K / Javeed A. Awan in Industrial & engineering chemistry research, Vol. 51 N° 35 (Septembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 35 (Septembre 2012) . - pp. 11561–11564 Titre : Vapor – liquid – liquid equilibrium measurements and modeling of the Methanethiol + Methane + Water ternary system at 304, 334, and 364 K Type de document : texte imprimé Auteurs : Javeed A. Awan, Auteur ; Ioannis Tsivintzelis, Auteur ; Alain Valtz, Auteur Année de publication : 2012 Article en page(s) : pp. 11561–11564 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Equilibrium  measurements  Vapor  liquid Résumé : New vapor–liquid–liquid equilibrium (VLLE) data for methanethiol (CH3SH) + methane (CH4) + water (H2O) have been obtained at three temperatures (304, 334, and 364 K) and pressures up to 9 MPa. A “static-analytical” method was used to perform all of the measurements. The objective was to provide experimental VLLE data for CH3SH with other natural gas contents at its crude form for which limited or no data are available in the open literature. Such kinds of data are required for the industrial modeling of sulfur emissions. It is observed from the experimental data that the solubility of CH4 in the aqueous and organic phases increases with an increase of the total system pressure and decreases with an increase of the temperature. However, the solubility of CH3SH in the aqueous and organic phases decreases slightly with an increase of the total system pressure and increases significantly with an increase of the temperature. The new VLLE data of this ternary system were compared with predictions of the cubic-plus-association equation of state. The model tends to underpredict the concentration of CH3SH in all phases, particularly the vapor phase. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie300888d [article] Vapor – liquid – liquid equilibrium measurements and modeling of the Methanethiol + Methane + Water ternary system at 304, 334, and 364 K [texte imprimé] / Javeed A. Awan, Auteur ; Ioannis Tsivintzelis, Auteur ; Alain Valtz, Auteur . - 2012 . - pp. 11561–11564. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 35 (Septembre 2012) . - pp. 11561–11564 Mots-clés : Equilibrium  measurements  Vapor  liquid Résumé : New vapor–liquid–liquid equilibrium (VLLE) data for methanethiol (CH3SH) + methane (CH4) + water (H2O) have been obtained at three temperatures (304, 334, and 364 K) and pressures up to 9 MPa. A “static-analytical” method was used to perform all of the measurements. The objective was to provide experimental VLLE data for CH3SH with other natural gas contents at its crude form for which limited or no data are available in the open literature. Such kinds of data are required for the industrial modeling of sulfur emissions. It is observed from the experimental data that the solubility of CH4 in the aqueous and organic phases increases with an increase of the total system pressure and decreases with an increase of the temperature. However, the solubility of CH3SH in the aqueous and organic phases decreases slightly with an increase of the total system pressure and increases significantly with an increase of the temperature. The new VLLE data of this ternary system were compared with predictions of the cubic-plus-association equation of state. The model tends to underpredict the concentration of CH3SH in all phases, particularly the vapor phase. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie300888d