Simulated distillation using gas chromatography with vacuum ultraviolet detection
AssigneeExxonMobil Technology and Engineering Company
InventorFrank C. Wang
Life of this patent
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Abstract
A method to simulate distillation of a petroleum stream by gas chromatography can include separating the petroleum stream with a gas chromatograph as a function of boiling point; passing the separated petroleum stream through a vacuum ultraviolet detector to yield data comprising a vacuum ultraviolet signal as a function of boiling point; integrating the vacuum ultraviolet signal as a function of boiling point over two or more wavelength ranges to derive relative concentrations of two or more components of the separated petroleum stream that correspond to the two or more wavelength ranges.
Claims20
A method to simulate distillation of a petroleum stream by gas chromatography comprising:
- separating the petroleum stream with a gas chromatograph as a function of boiling point;
- passing the separated petroleum stream through a vacuum ultraviolet detector to yield data comprising a vacuum ultraviolet signal as a function of boiling point;
- integrating the vacuum ultraviolet signal as a function of boiling point over two or more wavelength ranges to derive relative concentrations of two or more components of the separated petroleum stream that correspond to the two or more wavelength ranges.
A method to simulate distillation of a petroleum stream by gas chromatography comprising:
- separating the petroleum stream with a gas chromatograph as a function of boiling point;
- passing a first portion of the separated petroleum stream through a vacuum ultraviolet detector to yield data comprising a vacuum ultraviolet signal as a function of boiling point;
- passing a second portion of the separated petroleum stream through a flame ionization detector (FID) to yield data comprising a FID response as a function of boiling point;
- integrating the vacuum ultraviolet signal as a function of boiling point over two or more wavelength ranges to derive relative concentrations of two or more components of the separated petroleum stream that correspond to the two or more wavelength ranges;
- integrating the FID response as a function of boiling point over to derive weight percent of the separated petroleum stream as a function of boiling point;
- and
- correlating the relative concentrations of two or more components of the separated petroleum stream with the weight percent of the separated petroleum stream as a function of boiling point.
Dependencies are inferred from the claim text.