Leading heat accumulation phase transition heat transfer combination formula air heater

The utility model relates to a leading heat accumulation phase transition heat transfer combination formula air heater, including flue gas passageway and air duct, set up three group's pre -heaters between flue gas passageway and the air duct, to being high temperature preheating ware, medium temperature pre -heater and leading pre -heater down in proper order, the flue gas passageway passes hightemperature preheating ware, medium temperature pre -heater and leading pre -heater extremely down in proper order on the flue gas flow follow on the follow, and air duct is along the air current to passing leading pre -heater, medium temperature pre -heater and high temperature preheating ware from lower to upper in proper order. The utility model discloses use turbolator pre -heater, hot tubularpreheater and the combination of ceramic heat accumulation rotation pre -heater, simple structure, the price is low, gets crowd's length, has avoided the defect that dew point corrosion of present pre -heater low temperature