Gasification characteristics and kinetic analysis of oily sludge

This work aims to investigate the gasification characteristics of oily sludge in CO 2 atmosphere. In this study, the gasification characteristics of two typical oily sludge (SSOS and SLOS) in CO 2 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 E a 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 H 2 and CO. For CO, as the temperature exceeded 800 °C, the output surged, and the H 2 output only increased slightly. The effect of gasification agent was much less than that of temperature. When R exceeded 1, the dosage of CO 2 has little effect on the output of gas products.