Method for underground gasification of solid fuels

Details Method for underground gasification of solid fuels Method for underground gasification of solid fuels

1982-03-16

1984-05-08

Suchfield, George A.

Wells

Processes

Separating material entering well

166259, 166261, 166266, 166271, 166272, E21B 4322, E21B 4324, E21B 4340

Patent

active

044469217

ABSTRACT:
Method for the underground gasification of solid fuels in which an underground fuel deposit is initially opened up and then converted into a gaseous fuel by means of a gasification medium. The opening of the fuel deposit is effected by treatment with a gas which is in the supercritical state, which takes on the volatile organic substances of the solid fuel and the water contained in the solid fuel. The dissolved organic compounds and the water are separated from the charged supercritical gas phase above ground in at least two fractions by pressure reduction and/or a change in temperature.

REFERENCES:
patent: 2355167 (1944-08-01), Keith
patent: 2906337 (1959-09-01), Hennig
patent: 2974937 (1961-03-01), Kiel
patent: 3241611 (1966-03-01), Dougan
patent: 3358756 (1967-12-01), Vogel
patent: 3480082 (1969-11-01), Gilliland
patent: 3516495 (1970-06-01), Patton
patent: 4010800 (1977-03-01), Terry
patent: 4299285 (1981-11-01), Tsai et al.

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