Main features of the technological process of aging of bitumen obtained from the residues from Ukrainian crude oil processing

Q4 Chemistry

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2023-06-01 DOI:10.32434/0321-4095-2023-148-3-54-62

О. Grynyshyn, М.І. Donchenko, V. Kochubei, Y. Khlibyshyn

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Abstract

The effects of the technological process of aging of bitumen obtained from the residues from processing of Ukrainian crude oil on the bitumen’s operational characteristics, structural-group composition, and thermal stability have been studied. The aging of bitumen with a thickness of 2 mm has been conducted under laboratory conditions at a temperature of 1630C for 5 and 10 h. Two types of bitumen, oxidized bitumen BND 60/90 and distillation bitumen BD 130/200, have been examined. It has been found that the bitumen quality worsens due to the technological process of aging, e.g. the bitumen hardness and refractoriness increase whereas the elasticity and frost resistance decrease. It has also been shown that, because of the technological process of aging, the content of resins in the bitumen decreases, the content of asphaltenes increases, and the content of oil components does not change significantly. The structural type of the oxidized bitumen changes thereat from a "sol–gel" type to a "gel" type. For the distillation bitumen, the structural type does not change. The derivatographic analysis has revealed that the bitumen thermal stability increases due to the technological process of aging. The reason for this is a decrease in the content of paraffinic ingredients in the bitumen along with the bitumen structure compaction due to the aging.

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介绍了乌克兰原油加工残渣老化沥青工艺流程的主要特点

研究了乌克兰原油加工残渣沥青老化工艺对沥青的使用特性、结构基团组成和热稳定性的影响。在实验室条件下，在1630℃的温度下，对厚度为2mm的沥青进行了5和10小时的老化试验。试验了两种沥青:氧化沥青BND 60/90和蒸馏沥青BND 130/200。研究发现，由于老化的工艺过程，沥青的硬度和耐火度增加，而弹性和抗冻性降低，使沥青的质量恶化。研究还表明，由于老化的工艺过程，沥青中树脂含量降低，沥青质含量增加，油组分含量变化不明显。氧化沥青的结构类型由“溶胶-凝胶”型转变为“凝胶”型。蒸馏沥青的结构类型没有变化。衍生分析表明，沥青的热稳定性因老化的工艺过程而提高。其原因是由于老化导致沥青结构压实，导致沥青中石蜡成分含量降低。

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

Voprosy Khimii i Khimicheskoi Tekhnologii Chemical Engineering-Chemical Engineering (all)

CiteScore

0.90

自引率

0.00%

发文量

期刊介绍： Voprosy Khimii i Khimicheskoi Tekhnologii (Issues of Chemistry and Chemical Technology) is published bimonthly by the Ukrainian State University of Chemical Technology and accepts Ukrainian- or English language high-quality original articles and reviews concerning various fields of research in chemistry and chemical engineering. Our unusual title “Voprosy khimii i khimicheskoi tekhnologii” originates from the transliterated initial Russian title “Issues of Chemistry and Chemical Technology“. The fact of the matter is that Voprosy khimii i khimicheskoi tekhnologii was founded in 1965 as a scientific journal mainly for Russian-reading and Russian-speaking readership when «the Iron Curtain» existed. Since 1991, after Ukraine declared its independence, our Journal began to publish the articles in Ukrainian and English. Multilingualism is our established tradition. We remember and cherish our traditions, but we follow the latest trends in modern science. Papers that are multidisciplinary or address new or emerging areas of chemistry and chemical engineering are particularly encouraged. Thus, the scope is dynamic. It includes but is not limited to the traditional areas of general, inorganic, organic, analytical, physical chemistry and electrochemistry, as well as all conventional areas of chemical engineering (chemistry of high molecular compounds, technology of inorganic and organic substances, processing of combustible minerals, chemical technology of silicates, processes and apparatus of chemical productions, etc.). The Journal publishes papers dealing with newer interdisciplinary areas such as materials science, nano-science, catalysis, computational and theoretical chemistry, surface phenomenon and colloidal systems, environmental chemistry, green chemistry.