Method of treating coal to remove sulfur and ash

Details Method of treating coal to remove sulfur and ash Method of treating coal to remove sulfur and ash

1979-12-21

1981-12-15

Dees, Carl F.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

201 17, C10L 902

Patent

active

043057268

ABSTRACT:
The present invention is directed to an improved method of chemically treating coal to remove sulfur and ash. It is especially adapted for use on high sulfur, refuse coal. In practice the coal is treated with hydrochloric acid and hypochlorous acid in the presence of ferric and ferrous sulfate to convert the iron pyrites to other sulfur compounds. These are then converted to various salts of calcium through neutralization with lime.

REFERENCES:
patent: 200663 (1878-11-01), Morey
patent: 1899808 (1933-02-01), Kern
patent: 2346151 (1944-04-01), Burk et al.
patent: 3640016 (1972-02-01), Lee et al.
patent: 3926575 (1975-12-01), Meyers
patent: 3998604 (1976-12-01), Hinkley
patent: 4071328 (1978-01-01), Sinke
patent: 4134737 (1979-01-01), Yang

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