INFLUENCE OF RETORTING TEMPERATURE ON COMBUSTION CHARACTERISTICS AND KINETIC PARAMETERS OF OIL SHALE SEMICOKE

In this research three Jilin Huadian semicoke samples (SC-1, SC-2 and SC-3) were obtained from a retorting experimental rig setup under different retorting temperatures. A series of experiments accompanied by scanning electron microscope (SEM) analysis were carried out to study devolatilization of organic matter of oil shale and transformation of the structure of semicoke during the retorting process. It was also sought to provide theoretical foundation for the retorting process. Combustion characteristics of Huadian oil shale semicoke were studied using the Pyris1 TGA thermogravimetric analyzer (PE/USA) at different final temperatures and at certain heating rates. Kinetic parameters of semicoke combustion were determined by the Coats/Redfern method and the optimal combustion temperature was established. This information is necessary to further effective exploitation and economical application of oil shale semicoke.