عنوان مقاله [English]
In this research, the thermodynamic and hydrodynamic behavior of wax precipitation in crude oil has been investigated. The mechanisms of wax precipitation in pipe lines have been studied. Also, additives that improve the rheological behavior of crude oil and pour point have been investigated. Finally, thermodynamic models were studied and after mathematical formulation of these models, the tuning parameters were adjusted. In order to compare the performance of studied models, the wax precipitation experimental data reported in the literature were correlated using deviation of the predicted was precipitation amount from their experimental results. The results show that the Multi-Solid model predicts more accurately the wax precipitation experimental data with 17% deviation in comparison to other models.