Coal passivation process

Details Coal passivation process Coal passivation process

1975-08-20

1976-10-12

Dees, Carl F.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

44 1G, 44 6, 34 10, C10L 900, F26B 308

Patent

active

039855171

ABSTRACT:
Low rank coals such as subbituminous or lignites containing more than about 10 weight percent moisture are dried and passivated against reabsorption of moisture in a fluidized bed by heating the particulate coal with a warm inert gas passing upwardly through the bed and simultaneously coating the warm particulate coal with a heavy liquid hydrocarbon material. Such coating aids in the removal of the moisture and prevents the reabsorption of moisture by the coal and thereby prevents consequential heating and possibly spontaneous ignition of the coal during its subsequent transportation or storage.

REFERENCES:
patent: 1594994 (1926-08-01), Bone
patent: 2183924 (1939-12-01), Schoch
patent: 3414480 (1968-12-01), Stotler et al.
patent: 3565766 (1971-02-01), Eddinger et al.

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