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An optimization study on quality promotion of heavy crude oil exposed ultrasonic waves and magnetic nanoparticles addition
Chemical Engineering and Processing: Process Intensification ( IF 4.3 ) Pub Date : 2021-07-11 , DOI: 10.1016/j.cep.2021.108542
Hamed Mansouri 1 , Akbar Mohammadidoust 1 , Faezeh Mohammadi 1
Affiliation  

This study aims to investigate a new method of combining ultrasonic waves with different frequencies and magnetic nanoparticles in reducing the asphaltene content and kinematic viscosity of heavy oil. In general, the experiments included irradiation of ultrasonic waves at single-frequency mode, dual-frequency mode, temperature optimization, and the combined effects of the ultrasonic waves and magnetic nanoparticles in a constant magnetic field. The results demonstrated that, the ultrasonic irradiation at an optimum time of 10 min and a constant temperature of 20 °C with a frequency of 25 kHz and a power of 840 W decreased the asphaltene content and kinematic viscosity of the heavy oil from 13.52% and 87.2 cSt to 7.6% and 65.7cSt, respectively. In the dual-frequency mode (25 kHz and 1.7 MHz), the both parameters reduced to 7.33٪ and 62.9cSt. Subsequently the temperature of 50 °C was selected as optimum temperature for the experiments. The experimental optimizations cleared that at the concentration of γ-Fe2O3 magnetic nanoparticles (0.4 wt%) and the dual- frequency, the both parameters were significantly declined (7.1 cSt and 5.01 wt% respectively). Distillation test, FT-IR, SARA analyses and API index have verified that the ultrasonic waves and the magnetic nanoparticles have effectively lightened the studied oil.



中文翻译:

重质原油暴露超声波与磁性纳米粒子添加质量提升的优化研究

本研究旨在探索一种将不同频率的超声波与磁性纳米粒子相结合的新方法,以降低稠油的沥青质含量和运动粘度。总的来说,实验包括超声波在单频模式、双频模式下的辐照、温度优化以及超声波和磁性纳米粒子在恒定磁场中的组合效应。结果表明,在最佳时间10 min、恒温20 °C、频率25 kHz、功率840 W的超声辐照下,重油的沥青质含量和运动粘度从13.52%降低至13.52%。分别为 87.2 cSt 至 7.6% 和 65.7cSt。在双频模式(25 kHz 和 1.7 MHz)下,两个参数都降低到 7.33٪ 和 62.9cSt。随后选择50℃作为实验的最佳温度。实验优化表明,在 γ-Fe 浓度下2 O 3磁性纳米粒子(0.4 wt%)和双频,这两个参数都显着下降(分别为7.1 cSt和5.01 wt%)。蒸馏测试、FT-IR、SARA 分析和 API 指数验证了超声波和磁性纳米粒子有效地减轻了研究的油。

更新日期:2021-07-20
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