Kinetics of Thermal Decomposition Combined with Toluene Extraction of Oil Shale
[1]
Yahya Hamad Khraisha, Chemical Engineering Department, King Faisal University, Alahsa, Saudi Arabia.
[2]
Jamil Jawdat Asfar, Mechanical Engineering Department, University of Jordan, Amman, Jordan.
In this work, combined thermal decomposition and extraction of Jordanian oil shale was investigated experimentally using a batch autoclave device and toluene as a solvent. The results indicated that oil yield increases with the increase of temperature and extracting time. The maximum extract yields of 16%, 9.5% and 6% by weight were obtained at 42 bars and 318°C, 200°C and 150°C, respectively. Supercritical condition of toluene (42 bars, 318°C) has shown to be a significant one since the extracted yield was 55% more than that obtained by a classical Fischer Assay experiment. Kinetic analysis based on film theory has indicated that the rate of extraction was controlled by the diffusion of extract.
Oil Shale, Thermal Decomposition, Extraction, Autoclave Furnace, Kinetics
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