POLYFUNCTIONAL JET AIR HEATER Russian patent published in 2007 - IPC F23L15/04 

FIELD: heat power engineering.

SUBSTANCE: invention is designed for use of heat of flue gases of boiler units and industrial furnaces for heating air delivered for combustion. According to invention, proposed polyfunctional jet air heater has gas duct accommodating heat chamber in beginning of which cold air branch pipes are laid from cold air header through bottom terminating in slotted nozzles of cold air arranged parallel to each other and directed to side of movement of flue gases and intermediate traps-contractions installed coaxially opposite each cold air nozzle and terminating in intermediate slotted nozzles, and row of hot air traps is arranged in end of heat chamber, said traps being connected through hot air branch pipes with hot air header, cleaning chamber with conical bottom connected through hydraulic lock with drain pipeline in which perforated cassettes are placed parallel to gas flow. Cassettes are covered with layer of calcium hydroxide (Ca(OH)₂) and are provided with gas channels in between connected to cover of cassettes and vertical separating plates attached at angle relative to normal movement of flue gases to cover of baffle plates.

EFFECT: reduced content of aggressive and harmful admixtures in cooled flue gases, improved efficiency and ecological safety of devices.

1 dwg