Numerical study of the flow, heat transfer and pyrolysis process in the gas full circulation oil shale retort

Dai, Fangqin; Huang, Jindi; Lu, Hongguang; Pan, Luwei; Wu, Qicheng

doi:10.3176/oil.2021.4.03

Cited by 3 publications

(1 citation statement)

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“…On the other hand, kinetic analysis is essential to the numerical study of the retorting process, which could investigate the heat transfer, pyrolysis reactions, and mass transfer in the pyrolysis process and facilitate the optimization operation [11]. However, most research about oil shale mainly focuses on the study of the pyrolysis kinetics of oil shale [12][13][14], while the kinetic analysis of its product generation is rarely reported.…”

Section: Introductionmentioning

confidence: 99%

Research on the Characteristics and Kinetics of the Pyrolysis Process and Products Generation of Jimsar (China) Oil Shale Using TG-FTIR

et al. 2023

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The characteristics and kinetics of the pyrolysis process and product generation from Jimsar oil shale were investigated using the thermogravimetry–Fourier transform infrared spectroscopy (TG-FTIR) coupling technique. The results showed that the pyrolysis of oil shale had different reaction mechanisms in different conversion rate ranges (αP = 0–0.2, 0.2–0.6, 0.6–1). The pyrolyzed heating rate mainly affected the reaction mechanism in the range αP = 0.6–1. The released gaseous products were mainly composed of small-molecule compounds (CO2, SO2, CO, CH4), aliphatic (–CH2, –CH3), aromatic (C=C), and O–H functional groups. The generation models of C=C, –CH2, –CH3, CH4, CO, and CO2 derived in the temperature range of 573.15–873.15 K are all chemical reaction models, while the generation models of CO and CO2 derived in the range of 873.15–1073.15 K are both diffusion models. The relative values and variation in the thermodynamic parameters corresponded with that of the activation energy for the evolved components, representing the energy requirement during the generation process.

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