Desorption device

The utility model provides a desorption device. The desorption device comprises a desorption tower, the desorption tower comprises a tower bottom reboiler, a tower body and a tower top condenser arranged in an inner cavity of the tower body, the tower body is provided with a feeding port, a material to be desorbed is flashed by the tower bottom reboiler to form a gas-state desorption substance anda liquid-state tower substrate to enter the tower body through the feeding port, and the gas-state desorption substance moves towards the tower top condenser. The desorption device further comprisesan intercooler, the intercooler is one or a combination of more of a circulating water cooler, a chilled water cooler and a low-temperature to-be-desorbed material heat exchanger, and the intercooleris arranged between the feeding port and the tower top condenser in the flowing direction of gaseous desorption materials. The intercooler is used for pre-cooling the gaseous desorption material, so that the amount of the gaseo