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Abstract

Summary

This paper discusses the effect of microwaves on the flocculation of asphaltene particles. A sample of Dehlor heavy oil from southwestern Iran was exposed to microwave radiation under anoxic conditions and saturated with helium gas at intervals of 3, 6, and 9 minutes. Then, using a viscometer and normal heptane, the set point of asphaltene flocculation was determined for each sample. The results of the experiments showed that three minutes of exposure to microwave irradiation caused the asphaltene to be flocculated from 34 vol% normal heptanes in the crude sample to 41 vol%. In other words, microwaves inhibited asphaltene aggregation. Based on the results of SARA (Saturation, Aromatics, Resin, Asphaltene) analysis, the largest reduction in asphaltene composition in heavy oil occurred at the 3 min interval. In contrast, at 6 and 9 min, the greatest decrease was observed for resin compounds, which are themselves a natural inhibitor of flocculation. Changes in the structure and reduction of sulfur and nitrogen components of asphaltene also cause microwaves to act as an inhibitor in the flocculation of asphaltene particles. Therefore, reducing the amount of asphaltene compounds and eliminating polar compounds, which is a function of time interval for microwave radiation, delays asphaltene aggregation.

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/content/papers/10.3997/2214-4609.201800144
2018-04-09
2024-04-24

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References

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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201800144
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Inhibiting Asphaltene Precipitation Using Microwave Irradiation: Experimental Investigation
Conference Proceedings 2018, 1 (2018); https://doi.org/10.3997/2214-4609.201800144
/content/papers/10.3997/2214-4609.201800144
/content/papers/10.3997/2214-4609.201800144
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