Deashing of coal by the oil agglomeration process

Details Deashing of coal by the oil agglomeration process Deashing of coal by the oil agglomeration process

1981-11-05

1983-08-02

Straub, Gary P.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

44 1C, 44 15A, 201 23, 241 20, 423461, C01L 514, B09B 300, C10B 5300

Patent

active

043963960

ABSTRACT:
A method of deashing coal wherein the coal is wetted with hydrocarbon liquid to form agglomerates and the hydrophilic agglomerates are then separated from a water and ash phase to yield deashed coal agglomerates. The hydrocarbon liquid is then recovered from the coal agglomerates by a vacuum stripping in the absence of oxidizing gases with or without use of super heated steam. Where super heated steam is used the removed hydrocarbon liquid is subsequently separated from the steam by cooling.

REFERENCES:
patent: 1420165 (1922-06-01), Trent
patent: 3148140 (1964-09-01), Kaiser et al.
patent: 3637464 (1972-01-01), Walsh et al.
patent: 3663421 (1972-05-01), Parr
patent: 3957456 (1976-05-01), Verseluur
patent: 4219404 (1980-08-01), Dickakian
Murphy B. A., The Chemistry and Constitution of Asphalts Journal of the Institute of Petroleum, Dec. 1945, p. 475.
In Re Edwards 1956 CD 264, Apr. 18 1956.

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