Documents disponibles écrits par cet auteur

Determination of sulfur content of various gases using chrastil-type equations / Ali Eslamimanesh in Industrial & engineering chemistry research, Vol. 50 N° 12 (Juin 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 12 (Juin 2011) . - pp. 7682-7687 Titre : Determination of sulfur content of various gases using chrastil-type equations Type de document : texte imprimé Auteurs : Ali Eslamimanesh, Auteur ; Amir H. Mohammadi, Auteur ; Dominique Richon, Auteur Année de publication : 2011 Article en page(s) : pp. 7682-7687 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Natural  gases  Chrastil-type  equations Résumé : Accurate knowledge of the sulfur content of gases is a significant factor for prediction of the sulfur precipitation conditions in production of sour natural gases. However, because the concentration of sulfur in the gas phase is very low, the measurement difficulties consequently result in scarce experimental solubility values available in the literature. In this work, application of four commonly used Chrastil-type equations including the original Chrastil, Adachi and Lu, del Valle and Aguilera, and Mèndez-Santiago and Teja, which consider the effects of temperature, density of gas (solvent), and pressures on the sulfur solubility, are investigated to calculate the sulfur content of different gases at various temperature, pressure, and sulfur content ranges. In this study, sulfur is treated as single molecule S8. The Valderrama-Patel-Teja equation of state with non-density dependent mixing rules is used to calculate the densities ofgases. It is found out that the absolute average deviations (AAD %) of the evaluated sulfur contents by the aforementioned equations for 260 investigated experimental values are 21%, 12%, 19%, and 20%, respectively. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24239085 [article] Determination of sulfur content of various gases using chrastil-type equations [texte imprimé] / Ali Eslamimanesh, Auteur ; Amir H. Mohammadi, Auteur ; Dominique Richon, Auteur . - 2011 . - pp. 7682-7687. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 12 (Juin 2011) . - pp. 7682-7687 Mots-clés : Natural  gases  Chrastil-type  equations Résumé : Accurate knowledge of the sulfur content of gases is a significant factor for prediction of the sulfur precipitation conditions in production of sour natural gases. However, because the concentration of sulfur in the gas phase is very low, the measurement difficulties consequently result in scarce experimental solubility values available in the literature. In this work, application of four commonly used Chrastil-type equations including the original Chrastil, Adachi and Lu, del Valle and Aguilera, and Mèndez-Santiago and Teja, which consider the effects of temperature, density of gas (solvent), and pressures on the sulfur solubility, are investigated to calculate the sulfur content of different gases at various temperature, pressure, and sulfur content ranges. In this study, sulfur is treated as single molecule S8. The Valderrama-Patel-Teja equation of state with non-density dependent mixing rules is used to calculate the densities ofgases. It is found out that the absolute average deviations (AAD %) of the evaluated sulfur contents by the aforementioned equations for 260 investigated experimental values are 21%, 12%, 19%, and 20%, respectively. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24239085

Ice – clathrate hydrate – gas phase equilibria for argon + water and carbon dioxide + water systems / Amir H. Mohammadi in Industrial & engineering chemistry research, Vol. 50 N° 19 (Octobre 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 19 (Octobre 2011) . - pp. 11452-11454 Titre : Ice – clathrate hydrate – gas phase equilibria for argon + water and carbon dioxide + water systems Type de document : texte imprimé Auteurs : Amir H. Mohammadi, Auteur ; Dominique Richon, Auteur Année de publication : 2011 Article en page(s) : pp. 11452-11454 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Carbon  dioxide  Phase  equilibrium  Clathrate Résumé : In this communication, we report ice―clathrate hydrate―gas equilibrium data (dissociation data) for the argon + water and carbon dioxide + water systems in the temperature ranges of (264.3―271.2) and (260.2―270.7) K, respectively. The equilibrium data were generated using an isothermal pressure-search method. The new equilibrium data for carbon dioxide clathrate hydrates are compared with the equilibrium data reported in the literature to demonstrate the reliability of the experimental technique used in this work. The equilibrium data generated for argon clathrate hydrates are compared with a few sets of experimental data reported in the literature. It is found that such data for the latter clathrate hydrate are indeed scarce in the temperature range studied in our work. A comparison is finally made on the equilibrium conditions of argon, air, oxygen, nitrogen, and carbon monoxide clathrate hydrates. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24573342 [article] Ice – clathrate hydrate – gas phase equilibria for argon + water and carbon dioxide + water systems [texte imprimé] / Amir H. Mohammadi, Auteur ; Dominique Richon, Auteur . - 2011 . - pp. 11452-11454. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 19 (Octobre 2011) . - pp. 11452-11454 Mots-clés : Carbon  dioxide  Phase  equilibrium  Clathrate Résumé : In this communication, we report ice―clathrate hydrate―gas equilibrium data (dissociation data) for the argon + water and carbon dioxide + water systems in the temperature ranges of (264.3―271.2) and (260.2―270.7) K, respectively. The equilibrium data were generated using an isothermal pressure-search method. The new equilibrium data for carbon dioxide clathrate hydrates are compared with the equilibrium data reported in the literature to demonstrate the reliability of the experimental technique used in this work. The equilibrium data generated for argon clathrate hydrates are compared with a few sets of experimental data reported in the literature. It is found that such data for the latter clathrate hydrate are indeed scarce in the temperature range studied in our work. A comparison is finally made on the equilibrium conditions of argon, air, oxygen, nitrogen, and carbon monoxide clathrate hydrates. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24573342