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Paper
Title

Population Balance Modeling of Asphaltene Aggregation in Crude Oil at Different Temperatures

Year: 1400
COI: OGPCONF07_139
Language: EnglishView: 70
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Authors

Ali Zahedi-Nejad - Department of Gas Engineering, Ahvaz Faculty of Petroleum, Petroleum University of Technology (PUT), Kout-Abdollah, Ahvaz, Iran
Masoud Bahrami - Department of Gas Engineering, Ahvaz Faculty of Petroleum, Petroleum University of Technology (PUT), Kout-Abdollah, Ahvaz, Iran
Mohammad Torkaman - Department of Chemical Engineering, Faculty of Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran

Abstract:

In the present study, asphaltene aggregation was investigated from kinetic aspects through a series of experiments at different temperatures. An optical microscope was used to monitor aggregate size growth in the applied additive-free light crude oil. The results demonstrated a higher rate of asphaltene aggregation at higher temperatures, indicating the superior effect of viscosity reduction to solubility increase on asphaltene aggregation at higher temperatures. A population balance model was developed to foresee the size evolution of asphaltene aggregates. In this model, only Brownian motion was considered as the mechanism of aggregation and therefore the Brownian kernel of Smoluchowski was incorporated into the model. A fractal dimension of ۲.۵ was measured and selected as an input of the model. Collision efficiency was the sole adjustable parameter in the modeling and a root-mean-square error (RMSE) was assumed for the objective function of the modeling. The results of the model desirably matched experimental data and an average value of ۱۰.۰۷ % for error was obtained. Additionally, an incremental trend in collision efficiency with temperature was observed.

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This Paper COI Code is OGPCONF07_139. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/1257460/

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Zahedi-Nejad, Ali and Bahrami, Masoud and Torkaman, Mohammad,1400,Population Balance Modeling of Asphaltene Aggregation in Crude Oil at Different Temperatures,The 7th International Conference on Chemical and Petroleum Engineering,Tehran,https://civilica.com/doc/1257460

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Type of center: دانشگاه دولتی
Paper count: 2,009
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