Influence of electric and flow field characteristics on the cleaning of fillers for FCCS electrostatic separation

IF 6.1 1区工程技术 Q2 ENERGY & FUELS

Petroleum Science Pub Date : 2025-09-01 DOI:10.1016/j.petsci.2025.06.015

Wei-Wei Xu , Can Yang , Wei-Lin Yu , Zhao-Zeng Liu , Qiang Li

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Abstract

Filler cleaning is a challenge that affects the efficient separation of FCCS particles by electrostatic methods and limits the utilization of the oil slurry. Two filler cleaning methods are proposed in this paper, the flushing desorption method and the electrostatic desorption method, where desorption is achieved by respectively applying a flow field or an electric field to the fillers immersed in a cleaning solution (ethyl acetate). Also, the “rough particle-smooth plane” contact model between particles and filler was established, and the particle force model was established by analyzing the movement of particles in the process of cleaning. Furthermore, combining the established contact model and force model, the detachment model of particles was proposed. In this model, the dimensionless number λ is used to discriminate the attachment state of particles whose validity was verified by experiments. The experimental results showed that the cleaning efficiency of flushing desorption method and electrostatic desorption method increase with the increase of flow rate and voltage, which reached 50.5% and 61.4% at 0.1 m/s and 14 kV.

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电场和流场特性对FCCS静电分离填料清洗的影响

填料清洗是影响静电法高效分离FCCS颗粒并限制油浆利用的一大难题。本文提出了两种填料清洗方法，即冲洗解吸法和静电解吸法，其中通过对浸泡在清洗溶液（乙酸乙酯）中的填料分别施加流场或电场来实现解吸。建立了颗粒与填料之间的“粗颗粒-光滑平面”接触模型，并通过分析颗粒在清洗过程中的运动，建立了颗粒力模型。在此基础上，结合所建立的接触模型和力模型，建立了颗粒分离模型。该模型采用无量纲数λ来判别粒子的附着状态，并通过实验验证了模型的有效性。实验结果表明，冲洗解吸法和静电解吸法的清洗效率随着流速和电压的增加而增加，在0.1 m/s和14 kV时分别达到50.5%和61.4%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Petroleum Science 地学-地球化学与地球物理

CiteScore

7.70

自引率

16.10%

发文量

311

审稿时长

63 days

期刊介绍： Petroleum Science is the only English journal in China on petroleum science and technology that is intended for professionals engaged in petroleum science research and technical applications all over the world, as well as the managerial personnel of oil companies. It covers petroleum geology, petroleum geophysics, petroleum engineering, petrochemistry & chemical engineering, petroleum mechanics, and economic management. It aims to introduce the latest results in oil industry research in China, promote cooperation in petroleum science research between China and the rest of the world, and build a bridge for scientific communication between China and the world.