文献类型：期刊文献

英文题名：Pyrolysis of Heavy Oil in the Presence of Supercritical Water: The Reaction Kinetics in Different Phases

作者：Tan, Xue-Cai[1];Liu, Qing-Kun[1];Zhu, Dao-Qi[1];Yuan, Pei-Qing[1];Cheng, Zhen-Min[1];Yuan, Wei-Kang[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2015

卷号：61

期号：3

起止页码：857

外文期刊名：AICHE JOURNAL

收录：;EI(收录号：20150700529040);WOS:【SCI-EXPANDED(收录号:WOS:000349915000010)】；

基金：This work was supported by the CNPC Innovation Foundation (2011D-5006-0406), the Open Project of State Key Laboratory of Chemical Engineering (SKL-ChE-13C02) and the National Natural Science Foundation of China (Grant No. 21376075). The authors appreciate Prof. Jian-Hong Gong in Sinopec RIPP for simulated distillation GC analysis.

语种：英文

外文关键词：pyrolysis; heavy oil; supercritical water; reaction kinetics; stirring intensity

摘要：In the presence of supercritical water (SCW) and N-2, the pyrolysis of heavy oil was investigated to distinguish the difference in the reaction kinetics between the upgrading in the SCW and oil phases. The pyrolysis in the SCW phase is faster than that in the oil phase, but the reaction in whichever phase is retarded by vigorous stirring. The pyrolysis can be preferably described by a four-lump kinetic model consisting of the condensation of maltenes and asphaltenes in series. In the SCW phase, highly dispersed asphaltenes are isolated by water clusters from maltenes dissolved in SCW surroundings, by which the condensation of asphaltenes is drastically accelerated. Benefited from excellent mass transfer environments in SCW, the condensation of maltenes is promoted simultaneously. The introduction of SCW into the pyrolysis of heavy oil results in an effectively increased upgrading efficiency, but its influence on the properties of equilibrium liquid products is minor. (c) 2014 American Institute of Chemical Engineers AIChE J, 61: 857-866, 2015