Oxidation of coal-water slurry feed to hydrogasifier

Details Oxidation of coal-water slurry feed to hydrogasifier Oxidation of coal-water slurry feed to hydrogasifier

1975-09-09

1976-05-18

Bashore, S. Leon

Gas: heating and illuminating

Processes

Fuel mixtures

48202, 48206, 48210, 48DIG7, 201 9, 201 31, 260449M, C10J 116, C01B 214

Patent

active

039574601

ABSTRACT:
An aqueous coal slurry is preheated, subjected to partial oxidation and vaporization by injection of high pressure oxygen and is introduced into a top section of a hydrogasifier in direct contact with hot methane-containing effluent gases where vaporization of the slurry is completed. The resulting solids are reacted in the hydrogasifier and the combined gases and vapors are withdrawn and subjected to purification and methanation to provide pipeline gas. The amount of oxygen injected into the slurry is controlled to provide the proper thermal balance whereby all of the water in the slurry can be evaporated in contact with the hot effluent gases from the hydrogasifier.

REFERENCES:
patent: 2838388 (1958-06-01), Carkeek et al.
patent: 2864677 (1958-12-01), Eastman et al.
patent: 2942959 (1960-06-01), Rees et al.

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