The invention discloses a self-heating full-
contact type air dehumidifying device, and particularly discloses an air dehumidifying device which uses high-temperature wet hot air heat. The dehumidifying device is composed of a plate type
heat exchanger, an air flowing duct and a cooling dehumidifying
tower. The cooling dehumidifying
tower is arranged in a standing mode, a shell of the plate-type
heat exchanger is fixed on the upper portion of the cooling dehumidifying
tower, an air outlet of the dehumidifying tower is connected with a
cold air inlet of the plate-type
heat exchanger in an opposite mode, a high-temperature wet air outlet of the plate-type heat exchanger shell is connected with one end of the C-shaped air flowing duct, the other end of the air flowing duct is connected to a dehumidifying tower air inlet formed in the lower portion of the dehumidifying tower, cooling and dehumidifying are conducted in the cooling dehumidifying tower, and
condensed water is collected. According to the self-heating full-
contact type air dehumidifying device, cooled
cold air is used for lowering the temperature of the high-temperature wet air, the
humidity of the
cold air is increased at the same time, and dry cold air is obtained,
self heating is achieved, comprehensive utilization of energy is achieved. Compared with a traditional cooling dehumidifying device, the self-heating full-
contact type air dehumidifying device saves energy by more than 90 percent, and improves
utilization rate of water.