Petroleum Chemistry ( IF 1.3 ) Pub Date : 2021-09-22 , DOI: 10.1134/s0965544121090061 A. V. Goncharov 1 , E. B. Krivtsov 1
|
Abstract
The transformations undergone by the high-molecular-weight heteroatomic compounds (resins, asphaltenes) of the Novokuibyshevsk Refinery vacuum residue during thermal cracking at 500°C in the presence of additives such as calcium carbonate and calcium acetate were studied. The characteristic changes in the composition of the cracking products depending on the amount of the additive were demonstrated. Based on the data from 1H NMR spectroscopy, elemental analysis, and molecular weight measurements, the structural-group parameters of the resin and asphaltene molecules in the original vacuum residue and in the products of its cracking in the presence of different amounts of the additives were determined. The heterogeneous additives (≤0.5 wt %) afforded deeper degradation of resins and asphaltenes. The resin molecules underwent compaction due to destruction of the saturated rings and aliphatic moieties, followed by an increase in the content of oils in the liquid cracking products composition.
中文翻译：
引发裂化过程中高硫真空渣高分子量组分结构的变化
摘要
研究了新库比雪夫斯克炼油厂减压渣油在 500°C 热裂解过程中，在碳酸钙和醋酸钙等添加剂存在下，高分子量杂原子化合物（树脂、沥青质）发生的转变。证明了裂化产物的组成随添加剂的量而发生的特征变化。根据1的数据H NMR 光谱、元素分析和分子量测量，确定了原始减压渣油及其在不同量添加剂存在下的裂解产物中树脂和沥青质分子的结构组参数。异质添加剂（≤0.5 wt%）使树脂和沥青质更深地降解。由于饱和环和脂肪族部分的破坏，树脂分子经历了压缩，随后液体裂化产品组合物中油的含量增加。
京公网安备 11010802027423号