Desulfurization of carbonaceous materials

Details Desulfurization of carbonaceous materials Desulfurization of carbonaceous materials

1979-12-12

1981-06-02

Dees, Carl F.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

201 17, C10L 904, C10L 908, C10B 5700

Patent

active

042709288

ABSTRACT:
Solid carbonaceous material, especially coal or coal char, is desulfurized by sequential treatment with steam, hydrogen, and steam. The partially desulfurized char from the first steam treatment zone is used to remove hydrogen sulfide from the effluent gas from the hydrogen treatment zone. Both the treated effluent gas and the spent char are recycled, thereby providing an efficient process for desulfurization.

REFERENCES:
patent: 2717868 (1955-09-01), Gorin et al.
patent: 3007849 (1961-11-01), Nelson et al.
patent: 3130133 (1964-04-01), Loevenstein
patent: 3598528 (1971-08-01), Franz et al.
patent: 3600130 (1971-08-01), Aldridge et al.
patent: 4007092 (1977-02-01), Metrailer et al.
patent: 4013426 (1977-03-01), Schroeder
patent: 4133867 (1979-01-01), Muttall, Jr. et al.
patent: 4188191 (1980-02-01), Loganbach et al.
"Effectiveness of Gases in Desulfurization of Coal", Block et al., Fuel, vol. 54, Apr. 1975, pp. 113-120.

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