Characterization of Pyrolysis Kinetics of Continental Shale: Comparison and Enlightenment of the Parallel Reaction Model and the Overall Reaction Model

A total of nine immature–low maturity oil shale samples from Fushun and Maoming, the main producing areas in China, three mature Jiyang Depression, were selected for use hydrocarbon generation thermal simulation experiments an open system a closed system. The parallel first–order reaction kinetic model overall nth–order used to calibrate pyrolysis parameters samples. This comparative study revealed following conclusion. period gaseous hydrocarbons (C 1–5 ) was longest, heavy 14+ shortest. activation energy closely related organic matter, i.e., higher sample, reaction, which indicates that shale/shale conversion requires temperature conditions. regards as series reactions, it has better fitting effect longer such generating light components 6–14 matter. treats reactions with narrow window, In process order is sum orders sub–reactions. more hydrocarbon–generating parent material, reaction. sequence different matter follows: > hydrocarbons.