文献类型：期刊文献

英文题名：Visbreaking of heavy oil with high metal and asphaltene content

作者：Wang, Li-Tao[1];Hu, Yu-Yang[2];Wang, Lu-Hai[1];Zhu, Ya-Kun[3];Zhang, Hua-Jie[3];Huang, Zi-Bin[3];Yuan, Pei-Qing[3]

机构：[1]Petrochina Petrochem Res Inst, Beijing 102206, Peoples R China;[2]Univ Shanghai Sci & Technol, Sch Mat Sci & Engn, Shanghai 200093, Peoples R China;[3]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2021

卷号：159

外文期刊名：JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS

收录：;EI(收录号：20213910964105);WOS:【SCI-EXPANDED(收录号:WOS:000711631100006)】；

基金：The authors acknowledge the financial supports from NSFC (22178113), CNPC (PRIKY19022) and SINOPEC (ST18011-3-2, 120011).

语种：英文

外文关键词：Visbreaking; Oil sands bitumen; High asphaltene content; High metal content; Condensation

摘要：The visbreaking of Canadian oil sands bitumen (OSB) and Tahe atmospheric residue (AR) with high metal and asphaltene content was studied to deepen the understanding of the utilization of ultra-inferior heavy oil. The total content of nickel and vanadium in the asphaltenes contained in Canadian OSB reaches 1300 ppm, promoting large-scale aggregation of asphaltenes. Driven by high asphaltene content of 19.3 wt% and large-scale aggregation of asphaltenes, Canadian OSB with an initial boiling point (IBP) of 500 degrees C exhibits rapid condensation during visbreaking. Furthermore, those asphaltenes with the highest metal content participate in condensation first, producing metallic nickel in the formed coke. By changing cutting strategy, the group composition and metal distribution of Canadian OSB can be adjusted. A viscosity reduction rate above 99 % is obtained during the visbreaking of Canadian OSB with an IBP of 350 degrees C, similar to the visbreaking of Tahe AR with an asphaltene content of 15.4 wt% and a total metal content of 300 ppm.