The utilization of fluid catalytic cracking (FCC) slurry oil is a wide concern in modern refineries because of its poor processability. The present study used FCC slurry oil (SLO) as feedstock to produce mesocarbon microbeads (MCMBs) according to its rich aromatic content. A supercritical fluid extraction technique was adopted to remove the undesirable components and thus improve the mesophase development performance. Three different alkanes were used as the supercritical fluids, and the chemical composition of the derived fractions (SFEO) was analyzed. Four stages of mesophase development were observed in the carbonization process. The results showed that heavier feedstock reacted faster and reached the coalescence stage earlier, forming a bulk mesophase. MCMBs with a smooth surface and good morphology were prepared from iso-butane-derived SFEO at a reaction time of 3 h. The quality of the bulk mesophase produced from SFEOs was significantly improved in comparison to DQ SLO.

中文翻译：

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流体催化裂化淤浆油生产中碳微珠：通过超临界流体萃取提高性能

在现代炼油厂中，由于流化催化裂化（FCC）浆料油的加工性能较差，因此受到广泛关注。本研究使用FCC浆料油（SLO）作为原料，根据其富芳烃含量生产中碳微珠（MCMBs）。采用超临界流体萃取技术去除了不良成分，从而提高了中间相的开发性能。三种不同的烷烃用作超临界流体，并分析了衍生馏分（SFEO）的化学组成。在碳化过程中观察到中间相发展的四个阶段。结果表明，较重的原料反应较快，并较早到达聚结阶段，形成本体中间相。由异丁烷衍生的SFEO在3 h的反应时间下制备出具有光滑表面和良好形态的MCMB。与DQ SLO相比，SFEO产生的本体中间相的质量得到了显着改善。