Abstract

Structural changes of asphaltenes in the course of thermal and catalytic cracking of heavy oil from the Zyuzeevskoye field in the Republic of Tatarstan were studied. Cracking was carried out in a closed-type reactor at 450°С for 80 min. Data on the material balance and material composition of liquid cracking products were obtained. The structural group analysis of asphaltenes from the initial oil and asphaltenes formed after thermal and catalytic cracking was performed. It was shown that the asphaltene molecules of the initial oil have an archipelago type structure. In the course of catalytic cracking, the structure of an average asphaltene molecule transformed into an island type structure. These changes were due to the acceleration of cracking reactions of the feedstock, namely, aromatization and dealkylation, and the breaking of carbon–heteroatom bonds.

中文翻译：

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Zyuzeevskoye油田重油沥青质在热催化裂化过程中的结构转变

摘要

研究了鞑靼斯坦共和国Zyuzeevskoye油田重油热裂解和催化裂解过程中沥青质的结构变化。裂化在封闭式反应器中在 450°С 下进行 80 分钟。获得了液体裂解产品的物料平衡和物料组成数据。对来自初始油的沥青质和热裂解和催化裂解后形成的沥青质进行了结构组分析。结果表明，初始油的沥青质分子具有群岛型结构。在催化裂化过程中，平均沥青质分子的结构转变为岛型结构。这些变化是由于加速了原料的裂解反应，即芳构化和脱烷基化，