Ethanolamine in a method of recovering coal in aqueous slurry fo

Details Ethanolamine in a method of recovering coal in aqueous slurry fo Ethanolamine in a method of recovering coal in aqueous slurry fo

1978-12-20

1980-03-04

Novosad, Stephen J.

Mining or in situ disintegration of hard material

In situ conversion of solid to fluid

Dissolving or chemical reaction

241 1, B02C 1900, E21C 4102

Patent

active

041914252

ABSTRACT:
A method of in-situ coal recovery in slurry form from a coal deposit by first contacting the coal with a gaseous mixture of an oxygen-containing gas containing vaporized NO.sub.2, then with an aqueous alkaline solution to slurry the coal, and then recovering the slurried coal from the deposit. The particular aqueous alkaline solution disclosed herein contains ethanolamine.

REFERENCES:
patent: 1532826 (1925-04-01), Lessing
patent: 3815826 (1974-06-01), Aldrich et al.
patent: 3850477 (1974-11-01), Aldrich et al.
patent: 3863846 (1975-02-01), Keller, Jr. et al.
patent: 3918761 (1975-11-01), Aldrich
patent: 4032193 (1977-06-01), Drinkard et al.

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