中国石油大学学报（自然科学版）2018，Vol.42Issue(4)：75-81,7.DOI:10.3969/j.issn.1673-5005.2018.04.009
基于阶段演化特征的稠油氧化动力学
Oxidation kinetics of heavy oil based on stage evolution
摘要
Abstract
Oil oxidation and relevant reactions can be divided into 4 stages during air injection process for in-situ combustion, including the initial stage of low temperature oxidation, the later stage of low temperature oxidation, fuel deposition and high temperature oxidation.To obtain the oxidation kinetics parameters of each stage, a similar oxidation mechanism function has been applied in the literature, in which the reaction characteristics of the 4 reaction stages were not fully considered.In this paper, a Coats-Redfern integral method was used to calculate the oxidation kinetic parameters.Based on a simple reaction mechanism function, the reaction order is assumed as 0,0.5 and 1, and the influence of the reaction order on the oxidation ki-netics parameters was analyzed.A reaction kinetics model and its kinetic parameters were obtained via data processing using existing 30 reaction mechanism functions.It is found that the phase boundary reaction is dominant in the low temperature oxida-tion stage, and the three-dimensional diffusion reaction is the main stage in the high temperature oxidation stage.The Coats-Redfern integral method is suitable for the calculation of the kinetic parameters for crude oil oxidation with high accuracy.关键词
稠油/Coats-Redfern积分法/动力学参数/氧化Key words
heavy crude oil/Coats-Redfern integral method/kinetic parameters/oil oxidation分类
能源科技引用本文复制引用
袁士宝,赵黎明,蒋海岩,程海清..基于阶段演化特征的稠油氧化动力学[J].中国石油大学学报（自然科学版）,2018,42(4):75-81,7.基金项目
国家自然科学基金项目(51674198) （51674198）
陕西省自然科学基金项目(2016JM5031) （2016JM5031）
陕西省教育厅项目(16JS095) （16JS095）
