Study on the Performance of an Electric-Field-Enhanced Oil–Water Separator in Treating Heavy Oil with High Water Cut
Abstract
:1. Introduction
2. The Oil–Water Separator Design
2.1. Coalescer and Settlement Performance Theory
2.2. The Oil–Water Separator Structure
2.2.1. Parameter Design of the Coalescing Packing Assembly
2.2.2. Parameter Design of the VIEC Components
- The electrode assembly inside the three-phase separator;
- The connector assembly through the separator wall; and
- The power and its control devices that were located in the nearby control room.
- The space in front of the VIEC components ensured that the oil particles at the bottom of the tank could float to the oil phase, and the height of oil–water interface (Hw) had to be higher than the bottom of the VIEC to ensure that all the oil could enter the flow channel;
- The space downstream of the VIEC components ensured that the water particles of after coalescing under the electric field force had enough time to settle. In order to strictly ensure the safety performance of the device, its top had to be at least 0.2 m below the gas–liquid interface [37].
3. Experimental Set-Up and Process
3.1. Experimental Set-Up
3.2. Process
4. Results and Discussion
4.1. Influence of the Electric Field Frequency
4.2. The Influence of Flow on the Dehydration Effect
4.3. Influence of Chemicals on the Dehydration Effect
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Parameter | Value | Parameter | Value |
---|---|---|---|
Design flowrate | 10 m3/h | Water density at 50 °C | 992 kg/m3 |
Tank size | 5.2 m × 2.4 m × 3.695 m | Oil density at 50 °C | 932 kg/m3 |
Water content | 90% | Oil viscosity at 50 °C | 6.47 × 10−3 Pa·s |
Temperature | 50 °C | Water viscosity at 50 °C | 5.57 × 10−4 Pa·s |
Flow (m3/h) | Inlet Water Cut (%) | Water Cut of Each Sampling Point (%) | Dehydration Rate (%) | VIEC Power | ||||||
---|---|---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 6 | 7 | ||||
6.5 | 90 | 90 | 92 | 38 | 37 | 25 | 15 | 16 | 82.2 | Off |
86 | 98 | 98 | 32 | 30 | 16 | 21 | 16 | 81.4 | ||
78 | - | - | - | - | - | - | 12 | 84.6 | On | |
82 | - | - | - | - | - | - | 12 | 85.4 | ||
10 | 90 | 95 | 95 | 34 | 31 | 21 | 12 | 15 | 83.3 | Off |
96 | 96 | 96 | 42 | 41 | 35 | 24 | 27 | 71.9 | ||
95 | 100 | 100 | 22 | 22.5 | 11 | 8 | 8 | 91.6 | On | |
90 | 100 | 100 | 20 | 19 | 12 | 6 | 6 | 93.3 |
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Huang, S.; He, X.; Chen, J.; Wang, X.; Zhang, J.; Dong, J.; Zhang, B. Study on the Performance of an Electric-Field-Enhanced Oil–Water Separator in Treating Heavy Oil with High Water Cut. J. Mar. Sci. Eng. 2022, 10, 1516. https://doi.org/10.3390/jmse10101516
Huang S, He X, Chen J, Wang X, Zhang J, Dong J, Zhang B. Study on the Performance of an Electric-Field-Enhanced Oil–Water Separator in Treating Heavy Oil with High Water Cut. Journal of Marine Science and Engineering. 2022; 10(10):1516. https://doi.org/10.3390/jmse10101516
Chicago/Turabian StyleHuang, Songtao, Xue He, Jiaqing Chen, Xiujun Wang, Jian Zhang, Jianyu Dong, and Baosheng Zhang. 2022. "Study on the Performance of an Electric-Field-Enhanced Oil–Water Separator in Treating Heavy Oil with High Water Cut" Journal of Marine Science and Engineering 10, no. 10: 1516. https://doi.org/10.3390/jmse10101516
APA StyleHuang, S., He, X., Chen, J., Wang, X., Zhang, J., Dong, J., & Zhang, B. (2022). Study on the Performance of an Electric-Field-Enhanced Oil–Water Separator in Treating Heavy Oil with High Water Cut. Journal of Marine Science and Engineering, 10(10), 1516. https://doi.org/10.3390/jmse10101516