文献类型：期刊文献

英文题名：Demetallization of heavy oil through pyrolysis: A reaction kinetics analysis

作者：Chen, Xue-Feng[1];Da, Zhi-Jian[1];Gong, Jian-Hong[1];Zhang, Hua-Jie[2];Zhu, Ya-Kun[2];Yang, Jing-Yi[2];Yuan, Pei-Qing[2];Yuan, Wei-Kang[2]

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

年份：2021

卷号：67

期号：1

外文期刊名：AICHE JOURNAL

收录：;EI(收录号：20204209342962);WOS:【SCI-EXPANDED(收录号:WOS:000579308700001)】；

基金：The authors acknowledge the financial supports from SINOPEC (ST18011-3-2) and NSFC (21676084).

语种：英文

外文关键词：condensation; demetallization; heavy oil; lumped reaction kinetic model; pyrolysis

摘要：By tracking the transfer of vanadium and nickel in pyrolysis products, a seven-lump reaction kinetic model for pyrolysis-based demetallization of heavy oil was established. During pyrolysis, the demetallization of heavy oil is achieved by condensing metal-rich resins and asphaltenes to coke. The condensation of oil components originally contained in heavy oil differs greatly in reaction behavior, having the activation energy between 167 and 361 kJ/mol. As the pyrolysis progresses, the newly formed heavy components show a condensation behavior close to that of the light components. Limited by high activation energy and low initial fraction, the condensation of asphaltenes to coke and the resulting removal of metals contained in asphaltenes are hindered. Meanwhile, the condensation of light components has a major contribution to coke formation. An increase in reaction temperature accelerates the demetallization, but hardly changes the yield and component distribution of liquid products at the same metal removal rate.