The byproduct of ethylene tar has a high content of mono-, bi-, and polycyclic aromatic compounds, as well as cycloalkenes, including aromatic cycloalkenes. This paper evaluates the prospects of using ethylene tar as an additive in the visbreaking process of vacuum residue. A series of experiments on visbreaking of vacuum residue with additives of various refinery streams and ethylene tar were performed in a laboratory flow reactor. As a result of a comparative study of the composition of vacuum residue visbreaking products by different methods, it was shown that the use of ethylene tar compared with kerosene, light cycle oil, and heavy cycle oil allows an increased yield of the target product with a higher proportion of aromatic hydrocarbons. A comparative analysis of the characteristics of asphaltenes and resins of visbreaking products indicates a general trend of changes in the process of visbreaking vacuum residue with refinery streams and ethylene tar. A comparison of the colloidal instability index showed that the use of ethylene tar allows attainment of a more stable visbreaking product concerning refinery streams as additives.

中文翻译：

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乙烯焦油添加剂在石油真空渣油减粘裂化中的应用

乙烯焦油的副产物含有大量的单环、双环和多环芳族化合物，以及环烯烃，包括芳香环烯烃。评价了在减压渣油减粘裂化过程中使用乙烯焦油作为添加剂的前景。在实验室流动反应器中进行了一系列用各种炼油厂物流和乙烯焦油添加剂对减压渣油进行减粘裂化的实验。通过不同方法对减压渣油减粘裂化产品组成的比较研究表明，与煤油、轻循环油和重循环油相比，使用乙烯焦油可以提高目标产品的收率芳烃比例较高。对减粘裂化产品沥青质和树脂特性的比较分析表明，炼油厂流和乙烯焦油减粘减粘减压渣油工艺变化的总体趋势。胶体不稳定性指数的比较表明，使用乙烯焦油可以获得更稳定的减粘裂化产品，炼油厂流作为添加剂。