The oxidation of heavy oil: Thermogravimetric analysis and non-isothermal kinetics using the distributed activation energy model

The oxidation of heavy oil: Thermogravimetric analysis and non-isothermal kinetics using the distributed activation energy model

Type	Journal Article
Author	Cheng Fan
Author	Cheng Zan
URL	http://www.sciencedirect.com/science/article/pii/S0378382013003342
Volume	119
Pages	146-150
Publication	Fuel Processing Technology
Date	March 2014
Journal Abbr	Fuel Processing Technology
Abstract	Understanding the oxidation behavior and kinetics parameters of heavy oil oxidation is necessary to understand the reactivity of crude oil and discover novel recovery routes. Researchers used thermogravimetric analysis to study the oxidation behaviors of atypical Chinese heavy oil. The distributed activation energy model (DAEM) was applied to obtain accurate kinetic parameters of oxidation reactions from 30 to 550 °C and to bring new insights on the complex reactions and mechanistic understanding. Low-temperature oxidation and high-temperature oxidation are regarded as two character zones of heavy oil oxidation. The apparent activation energies at low temperatures are around 100 kJ/mol, and at high temperatures are about 190–230 kJ/mol. The curves predicted from kinetic parameters afford a good approach with the experimental data demonstrating the reliability of the available kinetic parameters.