文献类型：期刊文献

英文题名：Lumped Reaction Kinetic Models for Pyrolysis of Heavy Oil in the Presence of Supercritical Water

作者：Liu, Qing-Kun[1];Zhu, Dao-Qi[1];Tan, Xue-Cai[1];Yuan, Pei-Qing[1];Cheng, Zhen-Min[1];Yuan, Wei-Kang[1];Yang, Jing-Yi[2]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Res Inst Petr Proc, Shanghai 200237, Peoples R China

年份：2016

卷号：62

期号：1

起止页码：207

外文期刊名：AICHE JOURNAL

收录：;EI(收录号：20154501497151);WOS:【SCI-EXPANDED(收录号:WOS:000367924600016)】；

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).

语种：英文

外文关键词：lumped reaction kinetic model; pyrolysis; heavy oil; supercritical water; autocatalysis

摘要：The reaction kinetics of the pyrolysis of heavy oil in the presence of supercritical water (SCW) and high pressure N-2 were measured. At any reaction temperature applied, the pyrolysis under SCW environments is faster than that under N2 environments. Meanwhile, at lower temperatures the pyrolysis under both environments is accelerated by the introduction of coke into the feedstock. On the basis of a first-order four-lump reaction network consisting of the sequential condensation of maltenes and asphaltenes, the pyrolysis in whichever medium can be preferably described either by the lumped reaction kinetic model modified with autocatalysis and pseudoequilibrium or by the model modified solely with pseudoequilibrium. Benefited from the reduced limitation of diffusion to reaction kinetics, the pyrolysis in the SCW phase is more sensitive to the increase in reaction temperature than that in the oil phase, disengaging readily from the dependence on autocatalysis at a lower temperature. (C) 2015 American Institute of Chemical Engineers