Thermodynamic and structural studies of the solid deposit formation in paraffinic petroleum cuts
| Autor: | Michel Dirand, Dominique Petitjean, Mohammed Bouroukba |
|---|---|
| Přispěvatelé: | Laboratoire Réactions et Génie des Procédés (LRGP), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), David, N and Jaubert, JN and Privat |
| Rok vydání: | 2013 |
| Předmět: |
Alkane
chemistry.chemical_classification UNIQUAC 010405 organic chemistry Enthalpy Thermodynamics chemistry.chemical_element Mineralogy 02 engineering and technology Interaction energy 01 natural sciences 0104 chemical sciences 020401 chemical engineering chemistry lcsh:TA1-2040 13. Climate action [CHIM]Chemical Sciences 0204 chemical engineering Solubility lcsh:Engineering (General). Civil engineering (General) Carbon Dissolution Solid solution |
| Zdroj: | MATEC Web of Conferences, Vol 3, p 01006 (2013) XXXIX JEEP-39TH EDITION OF THE JOINT EUROPEAN DAYS ON EQUILIBRIUM BETWEEN PHASES XXXIX JEEP-39TH EDITION OF THE JOINT EUROPEAN DAYS ON EQUILIBRIUM BETWEEN PHASES, 2013, Nancy, France. ⟨10.1051/matecconf/20130301006⟩ |
| ISSN: | 2261-236X |
| DOI: | 10.1051/matecconf/20130301006 |
| Popis: | A general review [1, 2] is presented concerning joi ntly the crystallographic structures and the transition physicochemical data (Tfus, �fusH, �fusS, �ebH, �subH, Cp) in the pure normal alkanes, as well as the structural and thermodynamic behavior of their synthetic binary, t ernary and multinary model mixtures and of real petroleum waxes, particularly the solubility and mixture prop erties [3-6]. A major part of the structural and thermodyn amic data of the literature and our experimental results are listed from methane up to the alkane with carbon at om number equal to 390 [1, 2] as well as their variati ons versus the atom carbon number. The experimental results [3] and those of literatur e concerning the pure n-alkane dissolution enthalpies allow to determine the enthalpy of the formation of one o r several crystallized solid solutions of the mixture s [4] and to highlight the influence of the characteristic pa rameters of the paraffinic distribution (theoretical average chain length, n-alkanes number, monophasic or polyphasic state) on the excess properties in the solid state. This data bank permits to test the predictive capacities of t he UNIQUAC thermodynamic model. After modifying the expression of the interaction energy to take into a ccount the effect of the size difference between the n-alk anes of the mixtures and the internal disorder induced by t he nalkane length distribution, this model give very go od results for the prediction of the excess enthalpy o f complex multialkane samples [4]. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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