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Experimental Measurement and Thermodynamic Modeling of the Wax Disappearance Temperature (WDT) for a Quaternary System of Normal Paraffins.
| Content Provider | Europe PMC |
|---|---|
| Author | Shariatrad, Fatemeh Javanmardi, Jafar Rasoolzadeh, Ali Mohammadi, Amir H. |
| Copyright Year | 2022 |
| Abstract | Normal paraffin (N-alkane)-based wax is well knownas a severe problem in petroleum production, transportation, and processing.Implementing suitable solutions for wax-related problems requiresvast technical knowledge and investigation of the wax disappearancetemperature (WDT) of multicomponent systems in petroleum-dominatedsystems. In this study, the WDTs of a quaternary system comprisingdifferent mixtures of n-undecane + n-tetradecane + n-hexadecane + n-octadecane were measured using a visual-based diagnosis apparatusunder atmospheric pressure. On the other hand, the WDTs of the studiedsystems are predicted by applying a solid solution model without anyadjustable parameter. Two approaches namely γ–φand γ–γ are assessed. In the (γ–φ)approach, perturbed-chain statistical associating fluid theory (PC-SAFT)is applied for liquid phase modeling, while the solid phase is describedusing different activity coefficient models. In the (γ–γ)approach, nonidealities of both the liquid and solid phases are investigatedusing different combinations of activity coefficient models such asideal solution, regular solution theory, predictive Wilson, predictiveUNIQUAC, and UNIFAC. Comparison of experimental data and thermodynamicmodeling results indicates that applying the predictive UNIQUAC modelfor describing the nonideality of the solid phase and the regularsolution model for the liquid phase is the best combination for theaforementioned system with the average absolute deviation (AAD) of0.8 K. |
| Journal | ACS Omega |
| Volume Number | 7 |
| PubMed Central reference number | PMC9134231 |
| Issue Number | 20 |
| PubMed reference number | 35647458 |
| e-ISSN | 24701343 |
| DOI | 10.1021/acsomega.1c07072 |
| Language | English |
| Publisher | American Chemical Society |
| Publisher Date | 2022-05-13 |
| Access Restriction | Open |
| Rights License | Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). © 2022 The Authors. Published by American Chemical Society |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Chemical Engineering |
