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Design and optimization of natural gas liquefaction and recovery processes for offshore floating liquefied natural gas plants / Sanggyu Lee in Industrial & engineering chemistry research, Vol. 51 N° 30 (Août 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 30 (Août 2012) . - pp. 10021-10030 Titre : Design and optimization of natural gas liquefaction and recovery processes for offshore floating liquefied natural gas plants Type de document : texte imprimé Auteurs : Sanggyu Lee, Auteur ; Nguyen Van Duc Long, Auteur ; Moonyong Lee, Auteur Année de publication : 2012 Article en page(s) : pp. 10021-10030 Langues : Anglais (eng) Mots-clés : LNG  Liquefaction  Natural  gas  Optimization  Design Résumé : A natural gas liquefaction and liquid recovery sequence is proposed for top-side offshore floating liquefied natural gas processing. During liquefaction, a single mixed refrigerant is separated into heavy and light key components, separately compressed after the main cryogenic heat exchanger and then mixed again to make a single mixed refrigerant. The proposed liquefaction cycle has a simple, compact structure and is suitable for power-efficient, offshore, floating liquefied natural gas liquefaction. The natural gas liquid recovery process employs space- and energy-efficient dividing wall columns for the integration of depropanization and debutanization. The columns were optimized by response surface methodology. A compact top dividing wall column configuration could reduce total annual costs. A combined process integrating natural gas liquefaction and liquid recovery is finally proposed. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26201415 [article] Design and optimization of natural gas liquefaction and recovery processes for offshore floating liquefied natural gas plants [texte imprimé] / Sanggyu Lee, Auteur ; Nguyen Van Duc Long, Auteur ; Moonyong Lee, Auteur . - 2012 . - pp. 10021-10030. Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 30 (Août 2012) . - pp. 10021-10030 Mots-clés : LNG  Liquefaction  Natural  gas  Optimization  Design Résumé : A natural gas liquefaction and liquid recovery sequence is proposed for top-side offshore floating liquefied natural gas processing. During liquefaction, a single mixed refrigerant is separated into heavy and light key components, separately compressed after the main cryogenic heat exchanger and then mixed again to make a single mixed refrigerant. The proposed liquefaction cycle has a simple, compact structure and is suitable for power-efficient, offshore, floating liquefied natural gas liquefaction. The natural gas liquid recovery process employs space- and energy-efficient dividing wall columns for the integration of depropanization and debutanization. The columns were optimized by response surface methodology. A compact top dividing wall column configuration could reduce total annual costs. A combined process integrating natural gas liquefaction and liquid recovery is finally proposed. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26201415

Two-point temperature control structure selection for dividing-wall distillation columns / Kwangil Kim in Industrial & engineering chemistry research, Vol. 51 N° 48 (Décembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 48 (Décembre 2012) . - pp. 15683–15695 Titre : Two-point temperature control structure selection for dividing-wall distillation columns Type de document : texte imprimé Auteurs : Kwangil Kim, Auteur ; Moonyong Lee, Auteur ; Sunwon Park, Auteur Année de publication : 2013 Article en page(s) : pp. 15683–15695 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Distillation  column  Temperature  control Résumé : Two-point temperature control structures of dividing-wall columns (DWCs) were investigated to overcome difficulties arising from their complicated natures. The control performance of DWCs was assessed for nine different feed conditions characterized by the composition of an intermediate component and their relative volatility. Steady-state and dynamic simulations were performed to analyze the closed-loop responses for various two-point temperature control structures of DWCs. It is shown that proper control strategies depend strongly on feed characteristics, particularly on the relative volatilities of the feed components. Control structure evaluations follow from the rigorous simulations, and basic guidelines for selecting proper control structures for DWCs are proposed in relation to the feed conditions. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26710605 [article] Two-point temperature control structure selection for dividing-wall distillation columns [texte imprimé] / Kwangil Kim, Auteur ; Moonyong Lee, Auteur ; Sunwon Park, Auteur . - 2013 . - pp. 15683–15695. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 48 (Décembre 2012) . - pp. 15683–15695 Mots-clés : Distillation  column  Temperature  control Résumé : Two-point temperature control structures of dividing-wall columns (DWCs) were investigated to overcome difficulties arising from their complicated natures. The control performance of DWCs was assessed for nine different feed conditions characterized by the composition of an intermediate component and their relative volatility. Steady-state and dynamic simulations were performed to analyze the closed-loop responses for various two-point temperature control structures of DWCs. It is shown that proper control strategies depend strongly on feed characteristics, particularly on the relative volatilities of the feed components. Control structure evaluations follow from the rigorous simulations, and basic guidelines for selecting proper control structures for DWCs are proposed in relation to the feed conditions. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26710605