Method of processing coal channels in underground coal...

Details Method of processing coal channels in underground coal... Method of processing coal channels in underground coal...

E - Fixed Constructions

21

B

48/40

E21B 43/243 (2006.01)

Patent

CA 1073677

METHOD OF PROCESSING COAL CHANNELS IN UNDERGROUND COAL GASIFICATION ABSTRACT OF THE DISCLOSURE A method of processing recently bored channels when putting into operation an underground gas generator, consisting, on the one hand, in forced air blowing and, on the other hand, in taking away hot gases, is charac- terized in that is determined the magnitude of the hydro- static column of underground waters above the horizon of forced air blow and there is adjusted the outlet section of gas discharging wells. This permits maintaining in the bor- ing channel a pressure which is not less than that produced by the hydrostatic column to preclude an inflow of under- ground waters to the channel being processed. The temperature in the channel is raised at a gate from 80°C to 100°C per hour up to at least 500°C.

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