Kinetics of the Thermal Oxidation of Heavy Oils during Catalytic in-situ Combustion Process
DOI:
https://doi.org/10.54097/hset.v20i.3946Keywords:
Heavy Oil; in situ Combustion; Metal Oxides; Thermal Oxidation; Catalyst.Abstract
In order to investigate the kinetic parameters for in situ combustion of heavy crude oil and the catalytic effect of metal oxides, α·Fe2O3 particles were synthesized by applying microwave-assisted calcination method. Thermal analysis was conducted and kinetic parameters were evaluated via thermogravimetric analysis and tube tests. The results show that addition of α·Fe2O3 results in a substantial reduction in the activation energy of the heavy oil and increase in the frequency factor at the same conversion rate, making the reaction more intense. The kinetic tube tests reveal that high temperature oxidation reactions produce a large amount of CO and CO2. The addition of α·Fe2O3 caused the formation of multiple active sites on rock and enhanced the entire ISC process.
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