HEAT POWER COMPLEX FOR HEATING OF MINE VENTILATION AIR Russian patent published in 2020 - IPC E21F3/00 

FIELD: ventilation.

SUBSTANCE: invention relates to heat power systems for heating of ventilation air (HPS) and its supply to mine shaft, besides, complex can be used for heat supply. HPS for heating of mine ventilation air, comprising a hot air path with a hot air fan, air distributor arranged in cold and hot air mixing chamber and air heater, which is included into flue gas path with heat generator, arranged as communicated via gas outlet openings, at least one, afterburning chamber and combustion chamber, which has secondary blowing nozzles and layer furnace device, connected to blow fans. At that, blowing fans with air intake branch pipes are connected also to the cooled gas flue recirculation path, and air heater has several stages of flue gas cooling, which are connected in series with flue gas flow, and in air flow in parallel circuit.

EFFECT: proposed technical solutions ensure reliability, environmental friendliness and high efficiency of fuel and energy complex with possibility of coal-containing waste burning and external consumers heat supply.

10 cl, 2 dwg