Prediction of asphaltene precipitation from n-alkane diluted crude oil by using PC-SAFT equation of state
| Autor: | M. M. Shadman, A. Serajian, Saeb Ahmadi, S. Veisi, E. Zahedi, M. Vafaie Sefti |
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| Rok vydání: | 2016 |
| Předmět: |
Alkane
chemistry.chemical_classification Equation of state Chromatography Precipitation (chemistry) General Chemical Engineering Energy Engineering and Power Technology Thermodynamics 02 engineering and technology General Chemistry Flory–Huggins solution theory 021001 nanoscience & nanotechnology Geotechnical Engineering and Engineering Geology law.invention Fuel Technology 020401 chemical engineering chemistry law Asphalt Phase (matter) 0204 chemical engineering 0210 nano-technology Filtration Asphaltene |
| Zdroj: | Petroleum Science and Technology. 34:1075-1082 |
| ISSN: | 1532-2459 1091-6466 |
| Popis: | The precipitation tendency of heavy organics such as asphaltene has posed great challenges for petroleum industry, and thus study of asphaltene precipitation amount and formation conditions seems to be necessary. One of the most common approaches for prediction of asphaltene precipitation is using thermodynamic models. In this study a PC-SAFT equation of state (EOS) is used to predict asphaltene precipitation in two Iranian dead oil samples. Asphaltene content is obtained by filtration method of the oil samples diluted with specific concentrations of different normal alkanes. Also liquid-liquid equilibrium is used for characterization of oil sample into one heavy phase (asphaltene) and another light phase (saturates, aromatics, and resin). Calculations show that the developed model is highly sensitive to interaction parameter between oil fractions. Prediction results were improved due to using Chueh-Prausnitz equation. The results indicate good potential of PC-SAFT EOS in the prediction of asphalt... |
| Databáze: | OpenAIRE |
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