Abstract
This work aims to investigate the gasification characteristics of oily sludge in CO2 atmosphere. In this study, the gasification characteristics of two typical oily sludge (SSOS and SLOS) in CO2 atmosphere were compared and studied by fixed bed experiment and thermogravimetric analysis system. TG-DTG analysis results showed that the reaction was completed at 600 °C, while the termination temperature of SLOS was 650 °C. The thermal conversion of oil phase (excluding asphaltene) of SSOS and SLOS both maintained between 200 and 550 °C, showing high similarity. In kinetics analysis part, the average Ea of SSOS and SLOS was about 90 kJ mol−1 and 110 kJ mol−1, respectively, which means the gasification reaction difficulty of SSOS was slightly lower than SLOS. The gasification products are mainly composed of H2 and CO. For CO, as the temperature exceeded 800 °C, the output surged, and the H2 output only increased slightly. The effect of gasification agent was much less than that of temperature. When R exceeded 1, the dosage of CO2 has little effect on the output of gas products.
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Acknowledgements
The research was supported by the State Key Laboratory of Pollution Control and Resource Reuse Foundation (No. PCRRF19023), Key Research and Development Program of Liaoning Province (No. 2020JH2/10300099), and Fundamental Research Funds for the Central Universities (No. 18CX02150A). We also thank the State Key Laboratory of Heavy Oil in China University of Petroleum (East China).
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Wang, Z., Gong, Z., Wang, Z. et al. Gasification characteristics and kinetic analysis of oily sludge. J Therm Anal Calorim 147, 10785–10799 (2022). https://doi.org/10.1007/s10973-022-11278-8
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DOI: https://doi.org/10.1007/s10973-022-11278-8