文献类型：期刊文献

英文题名：Strategies for adding tetralin in thermal processing of heavy oil

作者：Peng, Rui[1];Yuan, Dong-Hao[1];Dai, Li -Shun[2];Shao, Zhi-Cai[2];Yang, Jing-Yi[1];Huang, Zi-Bin[1];Zhan, Liang[1];Gong, Jian-Hong[2];Yuan, Pei-Qing[1,3]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]SINOPEC Res Inst Petr Proc, Beijing 100083, Peoples R China;[3]East China Univ Sci & Technol, State Key Lab Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2023

卷号：170

外文期刊名：JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS

收录：;EI(收录号：20230613559371);WOS:【SCI-EXPANDED(收录号:WOS:000931093000001)】；

基金：The authors acknowledge the financial supports from National Natural Science Foundation of China (22178113), China Petrochemical Corporation (120011) and National Energy R&D Center of Petroleum Refining Technology (33600000-22-ZC0607-0017).

语种：英文

外文关键词：Thermal processing; Heavy oil; Tetralin; H -donation; Density functional theory

摘要：The strategy of adding tetralin as a H-donor in the thermal processing of heavy oil was investigated by exper-imental characterization and theoretical calculations. According to the experiments, the timing of adding 1 wt% of tetralin has a great influence on the visbreaking performance of heavy oil. Calculations based on density functional theory showed that benzyl radicals released from the thermal cracking of tetralin accelerate the dealkylation that determines the heavy oil upgrading. Meanwhile, H alpha provided by tetralin is able to selectively saturate aromatic C radicals which are essential for condensation. Compared with the conventional H-donor addition, i.e., pre-mixing of tetralin with heavy oil, a similar viscosity reduction rate of about 98% can be ob-tained during the visbreaking with delayed tetralin addition. Furthermore, the addition of tetralin before the significant occurrence of condensation further increases the conversion of vacuum residue fraction by 3.4% and reduces the asphaltene content of the product by 2.6 wt%.