| abstract |
The utility model discloses a boiler air heat exchange device, which comprises an air duct and an air preheater (1), wherein the air duct which is positioned at one side of the air preheater (1) and is connected with a fan is a cold air duct (22), the air duct which is positioned at the other side of the air preheater and is connected with a boiler or powder making equipment is a hot air duct (21), and the hot air duct (21) and the cold air duct (22) are communicated by air of the air preheater (1) in separate bins; the heat pipe heat exchanger is characterized by further comprising at least one heat pipe heat exchanger (4), wherein an evaporation section of the heat pipe heat exchanger (4) is located inside the hot air duct (21), and a condensation section of the heat pipe heat exchanger is located inside the cold air duct (22). The utility model discloses boiler air heat exchange device can solve air heater (1) ammonium bisulfate adhesion problem of blockking up, guarantees the stability of heat transfer. |