Mineral oils: processes and products – Refining – Nitrogen contaminant removal
Patent
1979-06-27
1981-06-02
Gantz, Delbert E.
Mineral oils: processes and products
Refining
Nitrogen contaminant removal
208280, 208282, 208290, 208291, C10G 1704, C10G 1707, G10G 2118
Patent
active
042710090
ABSTRACT:
Methods are disclosed for reducing the nitrogen content of shale oil by selectively removing therefrom nitrogen-containing compounds. The nitrogen content of shale oil is reduced by a process comprising lowering the viscosity of the shale oil and then contacting the shale oil with a sufficient amount of a solvent which is selective toward the nitrogen-containing compounds present in the shale oil. The selective solvent is selected from the group consisting of organic acids, and substituted organic acids, particularly acetic, formic and trichloroacetic acids and mixtures thereof. The selective solvent system containing the nitrogen-containing compounds is separated from the reduced nitrogen content shale oil raffinate.
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Compton Leslie E.
Stover Carole S.
Youngerman Eugene G.
Gantz Delbert E.
Grant Arnold
Occidental Research Corporation
Schmitkons G. E.
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