Coal preparation

Details Coal preparation Coal preparation

1983-12-23

1985-09-03

Dees, Carl F.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

44 2, 241 38, C10L 908, C10L 522

Patent

active

045390100

ABSTRACT:
A method of preparing fine particulate coal for power generation on which the coal is pretreated by the oil agglomeration method (10, 11) to increase the carbonaceous content and produce coal-oil agglomerates. These are fed to a fluidized bed (15) in which the fluid is steam. The bed as concentration is variable and agglomerates leaving the bed are disintegrated in a steam jet (21) which completes separation of the oil from the coal and forms the fine particle coal feed. The oil and steam are separated from the coal feed which continues in the fuel delivery system 29 to the power generation plant. The only steam mix is condensed 37 and the two phases separated (39) and recycled for further use. A control means is provided which is responsive to steam generation demand and activates changes in the generation of coal oil agglomerates (10, 11) and the discharge of coal particles from the fluid bed, disintegrator 15, 21.

REFERENCES:
patent: 1576335 (1926-03-01), Kreising
patent: 2738263 (1956-03-01), Peery et al.
patent: 2768938 (1956-10-01), Martin
patent: 3895760 (1975-07-01), Snyder
patent: 3973733 (1976-08-01), Switzer
patent: 4219404 (1980-08-01), Dickakian
patent: 4239496 (1980-12-01), Cochran
patent: 4294584 (1981-10-01), Verschuur
patent: 4396396 (1983-08-01), Mainwaring
patent: 4402706 (1983-09-01), Wunderlich
patent: 4415335 (1983-11-01), Mainwaring et al.

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