Yh. Khraisha, Retorting of oil shale followed by solvent extraction of spent shale: Experiment and kinetic analysis, ENERG SOURC, 22(4), 2000, pp. 347-355
Samples of El-Lajjun oil shale were thermally decomposed in a laboratory re
tort system under a slow heating rate (0.07 K/s) up to a maximum temperatur
e of 698-773 K. After decomposition, 0.02 kg of spent shale was extracted b
y chloroform in a Soxhlet extraction unit for 2 h to investigate the ultima
te amount of shale oil that could be produced. The retorting results indica
te an increase in the oil yields from 3.24% to 9.77% of oil shale feed with
retorting temperature, while the extraction results show a decrease in oil
yields from 8.10% to 3.32% of spent shale. The analysis of the data accord
ing to the global first-order model for isothermal and nonisothermal condit
ions shows kinetic parameters close to those reported in literature.