Elementary Analysis of Petroleum Distillates by Gc-Aed: Validation and Application to the Calculation of Distillation Profile Properties

Abstract : This article describes the development of elementary analysis in the distillation profile of petroleum cuts by gas phase chromatography-atomic emission detection (GC-AED) coupling and shows the application perspectives to characterisation of middle distillates of a piece of information unheard of until now on a routine basis. The performances of the analytical assembly used have been studied for carbon, hydrogen, sulphur and nitrogen analysis. Simulated distillation, a gas phase chromatography analysis which enables determining the weight percentage of distilled matter in relation to the boiling point of petroleum cuts, has been adapted to GC-AED coupling. We have developed a method giving access to three types of information: global elementary composition, simulated distillation and elementary composition in distillation profile, i. e. by fraction (%) of the distilled product. The analysis of the atmospheric distillates has been assessed in terms of precision and bias for these various types of information. The validation was carried out notably by comparison with the results obtained using reference analytical methods, on preparative distillation cuts of representative samples. The application of GC-AED to characterisation of distillates is discussed, in particular for classification purposes and for predicting petroleum properties in the distillation profile. The cetane number of gas oils was taken as an example to illustrate the latter application.
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F. Baco, A. Quignard, R. Szymanski. Elementary Analysis of Petroleum Distillates by Gc-Aed: Validation and Application to the Calculation of Distillation Profile Properties. Oil & Gas Science and Technology - Revue d'IFP Energies nouvelles, Institut Français du Pétrole, 1999, 54 (4), pp.473-485. ⟨10.2516/ogst:1999041⟩. ⟨hal-02075817⟩

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