Fuel and related compositions – Liquid fuels – Aluminum or heavy metal – other than lead – containing
Patent
1975-06-23
1977-04-19
Dees, Carl F.
Fuel and related compositions
Liquid fuels
Aluminum or heavy metal, other than lead, containing
201 17, 208 11R, 208230, 423242, C10L 910, C10G 1900
Patent
active
040185729
ABSTRACT:
Coal and petroleum oils, flue gases produced by their combustion, and natural gases are desulfurized by reacting with sulfides or polysulfides of hydrogen, sodium, potassium, rubidium or cesium to form the higher sulfur content polysulfides of these metals. After these sulfides have acquired sufficient sulfur in combined form to form sulfur saturated polysulfides, they can be reduced to sulfur unsaturated forms with recovery of elemental sulfur. In their sulfur unsaturated form, these metal polysulfides are used to treat additional quantities of the fossil fuels.
The metal sulfides or polysulfides can be used in 1 to 12% aqueous solution or in melt condition. Hydrogen polysulfides are used in their liquid form.
Sulfur removal from the fossil fuels takes place by dissolving and/or reacting elemental sulfur, many organic sulfur forms, and water-insoluble metal sulfides in aqueous solutions of alkali metal sulfides or in melts of alkali metal sulfides.
REFERENCES:
patent: 2020661 (1935-11-01), Schulze et al.
patent: 2162221 (1939-06-01), Kasehagen et al.
patent: 3617529 (1971-11-01), Thompson et al.
patent: 3787315 (1974-01-01), Bearden, Jr. et al.
patent: 3843771 (1974-10-01), Urban
patent: 3848056 (1974-11-01), Fonseca
Dees Carl F.
Kronman Albert F.
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