Method for reducing the nitrogen content of shale oil with a sel

Details Method for reducing the nitrogen content of shale oil with a sel Method for reducing the nitrogen content of shale oil with a sel

1979-06-27

1980-06-24

Crasanakis, George

Mineral oils: processes and products

Refining

Nitrogen contaminant removal

C10G 1702

Patent

active

042093856

ABSTRACT:
A method is disclosed for reducing the nitrogen content of shale oil by selectivity removing therefrom nitrogen-containing compounds. The nitrogen content of shale oil is reduced by 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 solvent is a mixture comprised of an organic acid and a mineral acid. The organic acid is selected from the group consisting of organic acids, and substituted organic acids, particularly acetic, formic and trichloroacetic acids and mixtures thereof; the mineral acid is selected from the group consisting of hydrochloric acid, nitric acid, nitrous acid, sulfuric acid, sulfurous acid, phosphoric acid and mixtures thereof.

REFERENCES:
patent: 3595776 (1971-07-01), Davidson et al.
patent: 3719587 (1973-03-01), Karchmer et al.
patent: 4159940 (1979-07-01), Smith

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