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US 2014/0231641 A1Published application
Generation of model of composition of petroleum by high resolution mass spectrometry and associated analytics
AssigneeExxonMobil Research and Engineering Company
InventorsKuangnan QIAN, Kathleen E EDWARDS, Anthony S. MENNITO, Roland B. SAEGER
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Abstract
A method to determine the model-of-composition of a vacuum resid in which the resid is separated into fractions including the DAO fraction which is then separated into chemical classes including saturates, aromatics, sulfides and polars by a combination of soft ionization methods. The results of the ionization analyses are reconciled with other analyses such as bulk analysis, then consolidated to generate the modeol-of composition.
Claims22
A method to determine a model-of-composition of a sample of a petroleum resid, comprising:
- (a) separating the resid sample into asphaltenes and deasphalted oils (DAO) and separating the deasphalted oils (DAO) into chemical meaningful classes including saturates, aromatics, sulfides and polars;
- (b) obtaining molecular ions or pseudo molecular ions of each of the asphaltenes, separated DAO and separated classes by soft ionization in high resolution mass spectrometry;
- (c) determining elemental formula of the molecular ions or pseudo molecular ions and quantifying their corresponding concentrations in the separated DAO and separated classes from the high resolution mass spectrometry;
- and
- (d) reconciling the high resolution mass spectrometry analyses from step (c) with other analytical measurements that determine bulk properties, structures and properties of the separated DAO and separated classes;
- and
- (e) consolidating the reconciled high resolution mass spectrometry analyses of the DAO and separated classes to generate the model-of-composition.
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Dependencies are inferred from the claim text.