Method for controlled burnout of abandoned coal mines and waste

Details Method for controlled burnout of abandoned coal mines and waste Method for controlled burnout of abandoned coal mines and waste

1982-05-10

1983-06-14

Yuen, Henry C.

Furnaces

Process

Burning pulverized fuel

110218, 110102, F23D 100

Patent

active

043876552

ABSTRACT:
A method is provided for recovering energy from wasted coal by the steps of creating at least one channel through the wasted coal, igniting the wasted coal in said channel, subjecting said wasted coal, at least at said channel, to a negative pressure applied at a preselected point, connecting said wasted coal, at least at said channel, to a source of air remote from said preselected zone whereby air is induced through said ignited coal to burn said coal to produce hot gaseous products of combustion, and the hot gaseous products of combustion are drawn from said zone, and utilizing said hot gaseous products of combustion in a heat exchange relationship to recover the heat energy therefrom.

REFERENCES:
patent: 44262 (1864-09-01), Thayer
patent: 808244 (1905-12-01), Korting
patent: 2407849 (1946-09-01), Roth
patent: 2616252 (1952-11-01), Robinson et al.
patent: 4098007 (1978-07-01), Davis et al.
patent: 4184436 (1980-01-01), Palm et al.
patent: 4285283 (1981-08-01), Lyon et al.
Heat Balance in In Situ Combustion, Bureau of Mines Report of Investigations, 4/29/1977 by Robert F. Chaiken.
Controlled Burnout of Wasted Coal on Abandoned Coal Mine Lands, Bureau of Mines Report of Investigations, by Robert F. Chaiken, 11/27/1980.

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