COMPARATIVE REACTIVITY OF ORGANIC MATTER DURING HYDROPYROLYSIS OF OIL SHALE EFFECT OF SEDIMENTATION CLIMATE

The thermogravimetric analysis during the hydrotreatment in dynamic regime of the organic matter for Tarfayas oil shale of the different layers and the layer M of Timahdit was the object of this study, several results obtained allowed us to describe this energetic matter of non-estimable value that it is to extract the matter or to use it as fuel. By processing the curves in TG, DTG=f(Tmax) and their surfaces we were able to show that the concentration of mineral and organic matter and the climate of the sedimentation have a great influence on the reactivity of the organic matter. The Z₄ layer (Cenomanian) was the most reactive layer, the Z₃ layer (Turonian) being the most concentrated in light organic matter. These two layers were the subject of in situ pyrolysis.Hydrogen also plays a very important role in the reaction, it decreases the difference of the maximum temperature of the DTG peaks, as it is the case between the Z₄ layer and the M layer of Timahdit, this difference goes from 60°C (under nitrogen) to 8°C (under H2) due to its reactivity.