Coal disaggregation by basic aqueous solution for slurry recover

Details Coal disaggregation by basic aqueous solution for slurry recover Coal disaggregation by basic aqueous solution for slurry recover

1974-03-28

1977-06-28

Purser, Ernest R.

Mining or in situ disintegration of hard material

In situ conversion of solid to fluid

Input and output wells

44 1B, 166307, 175 64, 241 1, E21C 4102

Patent

active

040321932

ABSTRACT:
This invention is a process for treating an underground formation of coal by contacting the coal with a basic aqueous solution for a time sufficient to disintegrate at least a portion of the coal formation. Subsequently, at least some of the disintegrated material is removed to create permeability in the coal formation. The coal is then treated with a heat carrying fluid to recover energy values from the coal. Another aspect of this invention is a process for slurry mining coal which comprises contacting the coal with the basic aqueous solution for a time sufficient to disintegrate the coal and form a slurry, then conveying said slurry to a receiving terminal.

REFERENCES:
patent: 1532826 (1925-04-01), Lessing
patent: 2788956 (1957-04-01), Pevere et al.
patent: 3472553 (1969-10-01), Miller
patent: 3815826 (1974-06-01), Aldrich et al.
"Solvent Power for Coals at Room Temp.", by I.G.C. Dryden Chemistry and Industry, June 7, 1952, pp. 502-508.

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