MINE VENTILATION AIR HEATING METHOD AND ASSOCIATED DEVICE Russian patent published in 2010 - IPC E21F3/00 E21F1/00 F24H3/02 

FIELD: heating.

SUBSTANCE: method involves heating of ambient air with flue gases coming from fuel combustion chamber, its supply to the mine through ventilation system. Hot air addition is dosed to ventilated air flow directly to suction channel of the main mine ventilation fan. Secondary blasting is used in combustion chamber. Secondary air is heated in convection jacket of side walls of combustion chamber. In outlet gas duct there used is cold air blast which is directed upwards at an angle not less than 45°. Fuel combustion chamber is equipped with outside located secondary air fans and inclined slit atomisers provided in side walls. External surface of side walls of fuel combustion chamber is equipped with convection jacket. Gas burners are located in ceiling part of fuel combustion chamber. Mine air heating is improved by preventing flue gas penetration into ventilation flow supplied to the mine.

EFFECT: increasing air-heating plant efficiency owing to complete fuel combustion, decreasing metal consumption of air pipeline.

4 cl, 3 dwg