Method for refining or upgrading hydrocarbons with analysis

Mineral oils: processes and products – Refining

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208178, 585828, 585830, 2101982, 210656, B01D 1508

Patent

active

050769090

ABSTRACT:
A sample of a hydrocarbon oil containing asphaltenes is chromatographically analyzed by forming a mixture of the oil with a weak solvent. The mixture is passed in contact with a column of a stationary phase of fine solid particles of fully functionalized material, followed by a weak solvent. The solvent, after recovery from the column, is analyzed for aromatics by UV-absorption of UV radiation in the range 200 to 400 nm. The absorbance of the UV light by the irradiated eluents across the UV wavelength range is monitored and the integral of absorbance is derived as a function of photon energy across the wavelength range. The magnitude of the derived integral in at least one time interval corresponding with aromatics in the eluent from the stationary phase is measured as an indication of the level of aromatics in the oil sample. The weak solvent may be followed by a strong solvent which, in turn, may be followed by a strong solvent which is modified by the addition of a hydrogen bonding solvent.

REFERENCES:
patent: 3676649 (1972-07-01), Burk
patent: 3897213 (1975-07-01), Stevens
patent: 3975727 (1976-08-01), Mader
patent: 4199323 (1980-04-01), Miller
patent: 4254656 (1981-03-01), Sanford
patent: 4264814 (1981-04-01), Freud
patent: 4265634 (1981-05-01), Pohl
patent: 4455084 (1984-06-01), Webb
patent: 4476713 (1984-10-01), Alfredson
patent: 4563585 (1986-01-01), Ward
patent: 4567753 (1986-02-01), Miller
patent: 4614871 (1986-09-01), Driscoll
patent: 4631687 (1986-12-01), Kowalski
patent: 4671103 (1987-06-01), Dickakian
patent: 4733084 (1988-03-01), Oosaka
Krstulovic, "Selective Monitoring of Polynuclear Aromatic Hydrocarbons by High Pressure Liquid Chromatography with a Variable Wavelength Detector", Analytical Chemistry, vol. 48, No. 9, Aug. 1976, pp. 1383-1386.
Bollet et al., Journal of Chromatography, vol. 206, pp. 289-300, 1981.
Hennion et al., Journal of Chromatography, vol. 280, pp. 351-362, 1983.
Galya, Rapid Sara Separations by High Performance Liquid Chromatography, Journal of Liquid Chromatography, 3(2) pp. 229-242 (1980).
Klevens, Spectral Resemblances of Cata-Condensed Hydrocarbons, The Journal of Chemical Physics, vol. 17, No. 5, May 1949, pp. 470-481.
Miller, Automated Hydrocarbon-type Separation by Multi-Dimensional Liquid Chromatography, Petroanalysis 81, 1981, pp. 91-105.

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