In-situ coal drying

Mining or in situ disintegration of hard material – Processes – Directly applying heat or vibration

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Details

34 15, 166260, F21B 4324, E21C 3716

Patent

active

047936568

ABSTRACT:
A method for upgrading coal in-situ is disclosed in which a treatment zone is established around an energy source placed in a cavity within a coal seam and the pore structure of the coal substantially irreversibly collapses as moisture is driven off. The energy source provides either evaporative energy such as heat or a combination of heat and pressure in-situ. Resorption of water returning to the treatment zone during cooling of the coal prior to mining is limited due to the pore collapse.

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