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Phase equilibria of natural gas hydrates in the presence of methanol, ethylene glycol, and NaCl aqueous solutions / Jong-Won Lee in Industrial & engineering chemistry research, Vol. 50 N° 14 (Juillet 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 14 (Juillet 2011) . - pp. 8750-8755 Titre : Phase equilibria of natural gas hydrates in the presence of methanol, ethylene glycol, and NaCl aqueous solutions Type de document : texte imprimé Auteurs : Jong-Won Lee, Auteur ; Seong-Pil Kang, Auteur Année de publication : 2011 Article en page(s) : pp. 8750-8755 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Aqueous  solution  Gas  hydrates  Natural  gas  Phase  equilibrium Résumé : The phase equilibria of natural gas hydrate were measured using natural gas distributed in the Korean domestic grid. In addition, the hydrate-phase equilibria in the presence of organic inhibitors of methanol and ethylene glycol at various concentrations and a salt (NaCl) were also investigated at 266.2–290.0 K and 0.99–8.86 MPa depending on the type and the concentration of the inhibitors. Experimental results showed that the hydrate-phase equilibria were shifted to the inhibition region in accordance with the increased inhibitor concentration. In the presence of a constant concentration of NaCl (3.5 wt %), the additional inhibition caused by the salt was found to be the same for either methanol or ethylene glycol at any concentration. Comparison of experimental temperature suppression caused by the addition of an inhibitor (both with and without the presence of NaCl) with the calculated results by two prediction methods showed good agreement except for the high concentrations of methanol and ethylene glycol. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24346915 [article] Phase equilibria of natural gas hydrates in the presence of methanol, ethylene glycol, and NaCl aqueous solutions [texte imprimé] / Jong-Won Lee, Auteur ; Seong-Pil Kang, Auteur . - 2011 . - pp. 8750-8755. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 14 (Juillet 2011) . - pp. 8750-8755 Mots-clés : Aqueous  solution  Gas  hydrates  Natural  gas  Phase  equilibrium Résumé : The phase equilibria of natural gas hydrate were measured using natural gas distributed in the Korean domestic grid. In addition, the hydrate-phase equilibria in the presence of organic inhibitors of methanol and ethylene glycol at various concentrations and a salt (NaCl) were also investigated at 266.2–290.0 K and 0.99–8.86 MPa depending on the type and the concentration of the inhibitors. Experimental results showed that the hydrate-phase equilibria were shifted to the inhibition region in accordance with the increased inhibitor concentration. In the presence of a constant concentration of NaCl (3.5 wt %), the additional inhibition caused by the salt was found to be the same for either methanol or ethylene glycol at any concentration. Comparison of experimental temperature suppression caused by the addition of an inhibitor (both with and without the presence of NaCl) with the calculated results by two prediction methods showed good agreement except for the high concentrations of methanol and ethylene glycol. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24346915