Documents disponibles écrits par cet auteur

Addition of the hydrogen sulfide group to the PPR78 model (Predictive 1978, Peng–Robinson equation of state with temperature dependent kij calculated through a group contribution method) / Romain Privat ; Mutelet Fabrice ; Jaubert, Jean-Noël in Industrial & engineering chemistry research, Vol. 47 n°24 (Décembre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 n°24 (Décembre 2008) . - p. 10041–10052 Titre : Addition of the hydrogen sulfide group to the PPR78 model (Predictive 1978, Peng–Robinson equation of state with temperature dependent kij calculated through a group contribution method) Type de document : texte imprimé Auteurs : Romain Privat, Auteur ; Mutelet Fabrice, Auteur ; Jaubert, Jean-Noël, Auteur Année de publication : 2009 Article en page(s) : p. 10041–10052 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Hydrogen  Sulfide  PPR Résumé : In 2004, we started to develop the PPR78 model which is a group contribution method aimed at estimating the temperature dependent binary interaction parameters (kij(T)) for the widely used Peng–Robinson equation of state. In our previous papers, 13 groups were defined: CH3, CH2, CH, C, CH4 (methane), C2H6 (ethane), CHaro, Caro, Cfused_aromatic_rings, CH2,cyclic, CHcyclic or Ccyclic, CO2, and N2. It was thus possible to estimate the kij for any mixture containing alkanes, aromatics, naphthenes, carbon dioxide, and nitrogen whatever the temperature. In this study, the PPR78 model is extended to systems containing hydrogen sulfide. To do so, the group H2S was added. From a general overview on the results obtained from the whole constituted experimental data bank, one can see that the PPR78 model is able to quite accurately predict the behavior of the systems containing H2S. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800799z [article] Addition of the hydrogen sulfide group to the PPR78 model (Predictive 1978, Peng–Robinson equation of state with temperature dependent kij calculated through a group contribution method) [texte imprimé] / Romain Privat, Auteur ; Mutelet Fabrice, Auteur ; Jaubert, Jean-Noël, Auteur . - 2009 . - p. 10041–10052. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 n°24 (Décembre 2008) . - p. 10041–10052 Mots-clés : Hydrogen  Sulfide  PPR Résumé : In 2004, we started to develop the PPR78 model which is a group contribution method aimed at estimating the temperature dependent binary interaction parameters (kij(T)) for the widely used Peng–Robinson equation of state. In our previous papers, 13 groups were defined: CH3, CH2, CH, C, CH4 (methane), C2H6 (ethane), CHaro, Caro, Cfused_aromatic_rings, CH2,cyclic, CHcyclic or Ccyclic, CO2, and N2. It was thus possible to estimate the kij for any mixture containing alkanes, aromatics, naphthenes, carbon dioxide, and nitrogen whatever the temperature. In this study, the PPR78 model is extended to systems containing hydrogen sulfide. To do so, the group H2S was added. From a general overview on the results obtained from the whole constituted experimental data bank, one can see that the PPR78 model is able to quite accurately predict the behavior of the systems containing H2S. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800799z

Ethanol-hydrocarbon blend vapor prediction / Romain Privat in Transactions of the ASME . Journal of engineering for gas turbines and power, Vol. 132 N° 9 (Septembre 2010) 

Public ISBD [article]  in Transactions of the ASME . Journal of engineering for gas turbines and power > Vol. 132 N° 9 (Septembre 2010) . - 08 p. Titre : Ethanol-hydrocarbon blend vapor prediction Type de document : texte imprimé Auteurs : Romain Privat, Auteur ; Jaubert, Jean-Noël, Auteur ; Freddy Garcia, Auteur Année de publication : 2011 Article en page(s) : 08 p. Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Combustion  Gas  turbine  power  stations  Ignition  Safety  systems  Vaporisation Index. décimale : 620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux Résumé : In the volatile fuel price environment of today, the quest for alternative fuels has become a heavy and long term trend in power generation worldwide. Incorporating alternative fuels in gas turbine installations raises multiple engineering questions relating to combustion, emissions, on-base and auxiliary hardware capability, safety, etc. In 2008, GE carried out a field test aimed at characterizing the combustion of ethanol in a naphtha fuelled gas turbine plant. The testing strategy has been to locally prepare and burn ethanol-naphtha blends with a fraction of ethanol increasing from 0% to nearly 100%. During the engineering phase prior to this field test, it appeared necessary to develop a sufficient knowledge on the behavior of ethanol-hydrocarbon blends in order to establish the safety analysis and address in particular the risks of (i) potential uncontrolled ignition event in the air blanket of fuel tanks and (ii) flash vaporization of potential fuel pond in a confined environment. Although some results exist in the car engine literature for ethanol-gasoline blends, it was necessary to take into account the specificities of gas turbine applications, namely, (i) the much greater potential ethanol concentration range (from 0% to 100%) and (ii) the vast composition spectrum of naphtha likely to generate a much larger Reid vapor pressure envelope as compared with automotive applications. In order to fulfill the safety needs of this field test, the “Laboratoire de Thermodynamique des Milieux Polyphasés” of Nancy, France has developed a thermodynamic model to approach the vaporization equilibria of ethanol-hydrocarbons mixtures with variable ethanol strength and naphtha composition. This model, named PPR78, is based on the 1978 Peng–Robinson equation of state and allows the estimation of the thermodynamic properties of a multicomponent mixture made of ethanol and naphtha compounds by using the group contribution concept. The saturation equilibrium partial pressure of such fluids in the various situations of relevance for the safety analysis can thus be calculated. The paper reports the elaboration of this model and illustrates the results obtained when using it in different safety configurations. DEWEY : 620.1 ISSN : 0742-4795 En ligne : http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JETPEZ00013 [...] [article] Ethanol-hydrocarbon blend vapor prediction [texte imprimé] / Romain Privat, Auteur ; Jaubert, Jean-Noël, Auteur ; Freddy Garcia, Auteur . - 2011 . - 08 p. Génie Mécanique Langues : Anglais (eng) in Transactions of the ASME . Journal of engineering for gas turbines and power > Vol. 132 N° 9 (Septembre 2010) . - 08 p. Mots-clés : Combustion  Gas  turbine  power  stations  Ignition  Safety  systems  Vaporisation Index. décimale : 620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux Résumé : In the volatile fuel price environment of today, the quest for alternative fuels has become a heavy and long term trend in power generation worldwide. Incorporating alternative fuels in gas turbine installations raises multiple engineering questions relating to combustion, emissions, on-base and auxiliary hardware capability, safety, etc. In 2008, GE carried out a field test aimed at characterizing the combustion of ethanol in a naphtha fuelled gas turbine plant. The testing strategy has been to locally prepare and burn ethanol-naphtha blends with a fraction of ethanol increasing from 0% to nearly 100%. During the engineering phase prior to this field test, it appeared necessary to develop a sufficient knowledge on the behavior of ethanol-hydrocarbon blends in order to establish the safety analysis and address in particular the risks of (i) potential uncontrolled ignition event in the air blanket of fuel tanks and (ii) flash vaporization of potential fuel pond in a confined environment. Although some results exist in the car engine literature for ethanol-gasoline blends, it was necessary to take into account the specificities of gas turbine applications, namely, (i) the much greater potential ethanol concentration range (from 0% to 100%) and (ii) the vast composition spectrum of naphtha likely to generate a much larger Reid vapor pressure envelope as compared with automotive applications. In order to fulfill the safety needs of this field test, the “Laboratoire de Thermodynamique des Milieux Polyphasés” of Nancy, France has developed a thermodynamic model to approach the vaporization equilibria of ethanol-hydrocarbons mixtures with variable ethanol strength and naphtha composition. This model, named PPR78, is based on the 1978 Peng–Robinson equation of state and allows the estimation of the thermodynamic properties of a multicomponent mixture made of ethanol and naphtha compounds by using the group contribution concept. The saturation equilibrium partial pressure of such fluids in the various situations of relevance for the safety analysis can thus be calculated. The paper reports the elaboration of this model and illustrates the results obtained when using it in different safety configurations. DEWEY : 620.1 ISSN : 0742-4795 En ligne : http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JETPEZ00013 [...]

Fluid phase equilibria correlation for carbon dioxide +1 - heptanol system with cubic equations of state / Catinca Secuianu in Industrial & engineering chemistry research, Vol. 51 N° 34 (Août 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 34 (Août 2012) . - pp. 11284-11293 Titre : Fluid phase equilibria correlation for carbon dioxide +1 - heptanol system with cubic equations of state Type de document : texte imprimé Auteurs : Catinca Secuianu, Auteur ; Junwei Qian, Auteur ; Romain Privat, Auteur Année de publication : 2012 Article en page(s) : pp. 11284-11293 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Thermodynamic  properties  Equations  of  state  Carbon  dioxide  Correlation  analysis  Correlation  Phase  equilibrium Résumé : The purpose of this paper is to compare three thermodynamic models to correlate the phase behavior of the highly polar system: carbon dioxide +I-heptanol. These three models rely either on the Peng-Robinson (PR) or on the Soave― Redlich―Kwong (SRK) equations of state and are all coupled with classical van der Waals one-fluid mixing rules. For the two first models, noted SRK/2PCMR and PR/2PCMR, where 2PCMR means two-parameter conventional mixing rule, a single set of temperature-independent binary parameters (kij and lij) was considered. The third model is the well-established PPR78 model also based on the PR equation of state (1978 version). In such a model, lij = 0 but the second binary interaction parameter (kij) is temperature-dependent and predicted by a group-contribution method. All available literature data in a wide range of pressures and temperatures and the global phase equilibrium diagram of the system were calculated with the three aforementioned models. Although the models used are simple, they are able to represent reasonably well the complex phase behavior of the system studied in this work. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26299456 [article] Fluid phase equilibria correlation for carbon dioxide +1 - heptanol system with cubic equations of state [texte imprimé] / Catinca Secuianu, Auteur ; Junwei Qian, Auteur ; Romain Privat, Auteur . - 2012 . - pp. 11284-11293. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 34 (Août 2012) . - pp. 11284-11293 Mots-clés : Thermodynamic  properties  Equations  of  state  Carbon  dioxide  Correlation  analysis  Correlation  Phase  equilibrium Résumé : The purpose of this paper is to compare three thermodynamic models to correlate the phase behavior of the highly polar system: carbon dioxide +I-heptanol. These three models rely either on the Peng-Robinson (PR) or on the Soave― Redlich―Kwong (SRK) equations of state and are all coupled with classical van der Waals one-fluid mixing rules. For the two first models, noted SRK/2PCMR and PR/2PCMR, where 2PCMR means two-parameter conventional mixing rule, a single set of temperature-independent binary parameters (kij and lij) was considered. The third model is the well-established PPR78 model also based on the PR equation of state (1978 version). In such a model, lij = 0 but the second binary interaction parameter (kij) is temperature-dependent and predicted by a group-contribution method. All available literature data in a wide range of pressures and temperatures and the global phase equilibrium diagram of the system were calculated with the three aforementioned models. Although the models used are simple, they are able to represent reasonably well the complex phase behavior of the system studied in this work. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26299456

Use of the PPR78 model to predict new equilibrium data of binary systems involving hydrocarbons and nitrogen / Romain Privat in Industrial & engineering chemistry research, Vol. 47 N°19 (Octobre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 N°19 (Octobre 2008) . - p. 7483–7489 Titre : Use of the PPR78 model to predict new equilibrium data of binary systems involving hydrocarbons and nitrogen : comparison with other GCEOS Type de document : texte imprimé Auteurs : Romain Privat, Auteur ; Jaubert, Jean-Noël, Auteur ; Mutelet Fabrice, Auteur Année de publication : 2008 Article en page(s) : p. 7483–7489 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : PPR78  model  Nitrogen  Vapor-liquid  equilibrium  VTPR  model  PSRK  model Résumé : Very recently, Privat et al. decided to add the nitrogen group to the PPR78 model. However, during the writing of their paper, new VLE data were published on three binary systems containing nitrogen: N2 + methane, N2 + ethane, N2 + and n-decane (new data on the ethane + methane system were also published). In this research note, the capability of the PPR78 model to predict these data along with two ternary systems involving nitrogen, methane, ethane, and n-decane is checked. Comparison with two other predictive models, VTPR and PSRK, is also performed. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800636h [article] Use of the PPR78 model to predict new equilibrium data of binary systems involving hydrocarbons and nitrogen : comparison with other GCEOS [texte imprimé] / Romain Privat, Auteur ; Jaubert, Jean-Noël, Auteur ; Mutelet Fabrice, Auteur . - 2008 . - p. 7483–7489. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 N°19 (Octobre 2008) . - p. 7483–7489 Mots-clés : PPR78  model  Nitrogen  Vapor-liquid  equilibrium  VTPR  model  PSRK  model Résumé : Very recently, Privat et al. decided to add the nitrogen group to the PPR78 model. However, during the writing of their paper, new VLE data were published on three binary systems containing nitrogen: N2 + methane, N2 + ethane, N2 + and n-decane (new data on the ethane + methane system were also published). In this research note, the capability of the PPR78 model to predict these data along with two ternary systems involving nitrogen, methane, ethane, and n-decane is checked. Comparison with two other predictive models, VTPR and PSRK, is also performed. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800636h