Desulfurization of coal

Details Desulfurization of coal Desulfurization of coal

1979-05-03

1980-11-11

Dees, Carl F.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

201 17, C10L 902, C10B 5700

Patent

active

042330343

ABSTRACT:
A process for reducing the amount of pyritic, organic and sulfate sulfur in coal and other carbonaceous materials by contacting sulfur-containing coal or carbonaceous material with hydrogen, transition metal salts and a buffer under increased temperature and pressure. Pyritic sulfides are reduced to ferrous sulfides and organic sulfides are converted to metal sulfides; the sulfides are, then, leached from the coal or carbonaceous material utilizing an acid solution. Alternatively, a metal compound may be added to the acid solution to promote the formation of hydrogen sulfide.

REFERENCES:
patent: 3846275 (1974-11-01), Urban
patent: 3909213 (1975-09-01), Sanders
patent: 3926575 (1975-12-01), Meyers
patent: 3997426 (1976-12-01), Montagna et al.
patent: 4007108 (1977-02-01), Leas
patent: 4055400 (1977-10-01), Stambaugh et al.
patent: 4071328 (1978-01-01), Sinke
patent: 4083696 (1978-04-01), Cole et al.
patent: 4155832 (1979-05-01), Cox et al.

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