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Kinetics of bitumen extraction from oil sands using organic solvents |
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| Authors: | Wei Yuan Peiliang Zhu Zhuang Kang Yinlu Sun |
| Affiliation: | 1. College of Chemistry, Liaoning University, Shenyang, China
Liaoning Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, Liaoning University, Shenyang, China Contribution: Conceptualization, Funding acquisition, Methodology, Project administration, Resources, Writing - original draft;2. College of Chemistry, Liaoning University, Shenyang, China Contribution: Formal analysis, ?Investigation, Software;3. College of Chemistry, Liaoning University, Shenyang, China Contribution: Data curation, Validation;4. College of Chemistry, Liaoning University, Shenyang, China |
| Abstract: | The kinetic study of bitumen extraction from oil sands is significant for efficiency improvement and reactor design in industrial applications. Here, an improved pseudo-first-order kinetic model was established with the assumption of a constant Sherwood number, which took into account the mass transfer area. Five organic solvents were used for the extraction kinetics of the prepared bitumen microbeads. The improved pseudo-first-order kinetic model exhibited excellent fitting effects. Petroleum ether/dichloromethane was proved to be the best solvent. The results also showed an exponential decrease in the diameter of the bitumen microbeads and a linear increase in mass transfer coefficients with time for all the solvents. The kinetics of bitumen extraction from oil sands using different solvents were predicted according to the corresponding average mass transfer coefficients. The experimental results confirmed that the improved kinetic model was capable of describing the mass transfer process of bitumen extraction from oil sands. |
| Keywords: | bitumen extraction kinetic model mass transfer oil sands |