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AssigneeIfp
InventorsFabrice Bertoncini, Benoît Celse, Cyril Dartiguelongue
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A method of determining physico-chemical properties of a petroleum sample from two-dimensional gas chromatography. The amounts of molecular compounds present in the sample are determined by means of two-dimensional gas chromatography. At least one physical property, such as the octane number, is then determined from these amounts. A previously calibrated relation connecting the physical property to the amounts is used to this end.
A method of determining at least one physical property of a mixture of molecular compounds, comprising:
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With serial coupling of separation columns: for multidimensional chromatography
Signal analysis: evaluation, i.e. decoding of the signal into analytical information
Oils , i.e. hydrocarbon liquids: by measuring cloud point or pour point of oils
Oils , i.e. hydrocarbon liquids: mixtures of fuels
About 4 years 2 months of term left · ends 3 Jan 2031 (estimated)
1. Field of the Invention
The present invention relates to the field of physical and chemical analysis of petroleum samples. What is referred to as a “petroleum sample” is a hydrocarbon mixture, that is a mixture of organic compounds mainly containing carbon (C) and hydrogen (H) atoms.
In particular, the invention provides a method of determining physico-chemical properties of a petroleum sample from a quantitative analysis of the molecular composition thereof.
Other features and advantages of the method according to the invention will be clear from reading the description hereafter of embodiments given by way of non limitative example, with reference to the accompanying figures wherein:
FIG. 1 illustrates the principle of reconstruction of a chromatogram in GC-2D;
FIG. 2 shows a 2D chromatogram;
The invention relates to a method of determining the physical properties of a petroleum sample. These macroscopic physical properties are observed at the scale of the sample. They can be for example:
Combustion Properties: octane number (research or motor (RON or MON), property measured on gasolines), cetane number (CN, property measured on diesel fuels), smoke point (property measured on kerosenes), gravity (at 15° C.),
Cold Properties: cold filter plugging point (CFPP), cloud point, pour point, freezing point (property measured on kerosenes).