COKER WITH RECIRCULATION OF EXHAUST GASES Russian patent published in 2015 - IPC C10B15/02 C10B21/18 F23C9/00 

FIELD: mining.

SUBSTANCE: invention can be used for obtaining of coke from coal. The coker with or without heat regeneration contains the furnaces (1, 2) with a furnace camera limited by doors and sidewalls for loading of coal or the compacted coal pie and with the free space above it. The unit also comprises the exhaust device (7) for removal of exhaust gas from free space, the supply devices for supply of inlet air into free space, and also the sole channel system (8, 9) for passing of exhaust gas or secondary inlet air which at least is partially integrated into the base under the furnace camera. For equalizing of burning and reduction of thermal emission of nitrogen oxides of the named unit the exhaust gas formed in the furnace (1) during further passing is returned for burning process into the furnace (1) upstream towards the flow into the furnace camera, drainage channels (5) or into the sole channel system (8, 9) in the lower structure of the furnace.

EFFECT: invention allows to shorten time required for full coking of coal batch, and also formation of harmful substances.

14 cl, 5 dwg