关键词: 油页岩, 热解, TG-FTIR-MS, 动力学模型

Abstract: Based on thermogravimetric analyzer （TG），Fourier transform infrared （FTIR）and spectrometer and mass （MS） three-line profits for Gansu oil shale were studied by FTIR analysis and pyrolysis. The chemical composition and chemical structure of the sample was obtained through analyzing the spectra. The results showed that the chemical structures of samples are characterized by relatively higher amounts of aliphatic groups which is composed of TGA/FTIR/MS spectrometer. Experimental results indicates the whole pyrolysis process could be divided into two stages，as low temperature and high temperature ones. While pyrolysis behavior mainly occurred in low temperature stage（400—600℃），during which weigh loss ratio of oil shale is up to 70%，and volatile substance rapidly degraded in whole. In pyrolysis process，evolved gas such as H2，H2O，CO2，CH4，CO，SO2 and light hydrocarbon，pyrolysis productivity of oil shale is much lower in high temperature stage （600—850℃）. It is a small amount vapor decomposed from carbonate of mineral substance in this stage. This paper is to investigate the evolved gas from two pyrolysis stages，disclose the composition，the time and the mechanism of gas evolution，and reach the chemical reaction kinetics parameters of pyrolysis.

Key words: oil shale, pyrolysis, TG-FTIR-MS, kinetic modeling