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Gelation and breakage behavior of model wax – oil systems / Yansong Zhao in Industrial & engineering chemistry research, Vol. 51 N° 23 (Juin 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 23 (Juin 2012) . - pp. 8123-8133 Titre : Gelation and breakage behavior of model wax – oil systems : Rheological properties and model development Type de document : texte imprimé Auteurs : Yansong Zhao, Auteur ; Lalit Kumar, Auteur ; Kristofer Paso, Auteur Année de publication : 2012 Article en page(s) : pp. 8123-8133 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Rheological  properties  Wax  Modeling  Gelation Résumé : Gelation and breakage of model wax―oil systems is investigated using microscopy, densitometry, rheometry, and XRD. Various model waxy oils are prepared, including 1 to 20 wt % (w/w) macrocrystalline wax in dodecane, 1 to 20 wt % microcrystalline wax in dodecane, and 5 wt % macrocrystalline wax in Primol 352. The influence of shear history, thermal history, and fluid composition is ascertained. A novel gel breakage model is introduced which spans the entire mechanical response of wax gels from initial Hookean behavior at low strains to equilibrium slurry flow at the infinite strain limit. The local rheology model will benefit shut-in and restart processes of waxy crude pipelines via application of standard fluid mechanics relationships. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25990325 [article] Gelation and breakage behavior of model wax – oil systems : Rheological properties and model development [texte imprimé] / Yansong Zhao, Auteur ; Lalit Kumar, Auteur ; Kristofer Paso, Auteur . - 2012 . - pp. 8123-8133. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 23 (Juin 2012) . - pp. 8123-8133 Mots-clés : Rheological  properties  Wax  Modeling  Gelation Résumé : Gelation and breakage of model wax―oil systems is investigated using microscopy, densitometry, rheometry, and XRD. Various model waxy oils are prepared, including 1 to 20 wt % (w/w) macrocrystalline wax in dodecane, 1 to 20 wt % microcrystalline wax in dodecane, and 5 wt % macrocrystalline wax in Primol 352. The influence of shear history, thermal history, and fluid composition is ascertained. A novel gel breakage model is introduced which spans the entire mechanical response of wax gels from initial Hookean behavior at low strains to equilibrium slurry flow at the infinite strain limit. The local rheology model will benefit shut-in and restart processes of waxy crude pipelines via application of standard fluid mechanics relationships. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25990325