Vacuum decompression type high efficiency drying system

摘要

The present invention relates to a high-efficiency vacuum decompression drying system that can recover waste heat by a simple structure, save energy by excluding the use of a heater, and at the same time reduce the time required for drying by a vacuum decompression drying method. will be. According to the present invention, the dryer 11 is formed with a closed space 12 for receiving the object to be dried; A superheated air supply line 14 connected to one side of the dryer 11 to supply superheated air on the closed space 12; A wet air recovery line 16 connected to the other side of the dryer 11 so that the wet air generated in the drying process of the object to be dried is discharged; A vacuum pump 17 connected to one side of the wet air recovery line 16 to depressurize the inside of the closed space 12 by pumping wet air on the closed space 12; Steam connected to supply superheated air to the superheated air supply line (14) after pressurized wet air discharged from the wet air recovery line (16) at the rear end of the vacuum pump (17) to produce superheated air in a high temperature dry state A compressor 18; It is connected to the superheated air supply line (14) and includes a heat exchanger (19) for supply to be delivered to the dryer (11) in a state where the superheated air supplied from the steam compressor (18) is reduced to a certain temperature. High-efficiency vacuum pressure-sensitive drying system is provided.