Paraffin crystallization in synthetic mixtures: Predictive local composition models revisited

authors	Coutinho, JAP; Goncalves, C; Marrucho, IM; Pauly, J; Daridon, JL
nationality	International
journal	FLUID PHASE EQUILIBRIA
author keywords	paraffin crystallization; wax formation; modelling; solid-liquid equilibria; solid phase nonideality
keywords	SOLID-LIQUID EQUILIBRIA; DIFFERENT N-ALKANES; X-RAY-DIFFRACTION; WAX FORMATION; FUEL BLENDS; TEMPERATURE; PRESSURE; SYSTEMS; CRUDE; EXPRESSION
abstract	Aiming at identify the shortcomings of the available models for the description of the solid phase non-ideality, new solid liquid equilibrium data for multicomponent hydrocarbon systems was measured. The Predictive UNIQUAC and Wilson models for the description of the solid phase non-ideality, previously proposed, are here compared against this new data. The weaknesses displayed by these models on the predictive description of the measured phase behavior helps to identify their limitations and this is expected to lead to a new improved model for the solid phase non-ideality. Following this approach a new UNIQUAC based model is proposed that seems to overcome the limitations of the models identified on this work. (c) 2005 Elsevier B.V. All rights reserved.
publisher	ELSEVIER SCIENCE BV
issn	0378-3812
year published	2005
volume	233
issue	1
beginning page	28
ending page	33
digital object identifier (doi)	10.1016/j.fluid.2005.04.007
web of science category	Thermodynamics; Chemistry, Physical; Engineering, Chemical
subject category	Thermodynamics; Chemistry; Engineering
unique article identifier	WOS:000230364700005