摘要
Pyrolysis kinetics characteristics of oil shale samples obtained from Liushuhe Basin were investigated by Rock Eval analysis. The pyrolysis characteristics were studied at different heating rates (10, 15, 20, 25, 30 ℃/min) from 200 ℃ to 600 ℃. Based on the Friedman mathematical formula and Sestak reaction mechanism,the reaction activation energy and reaction function were obtained, and so the pyrolysis mathematical model was developed. This mathematical model can be used to calculate the hydrocarbon conversion and required times for the fixed conversion. It is found that the reaction activation energy is not a constant and is a variable with the variety of reaction temperature. The reason is that the pyrolysis reaction process of oil shale is complicated multistep reaction, in which reaction mechanism is variable in different temperature range.
