Recycling device for hydrogen fluoride in tail gas of uranium dioxide hydrofluorination process

The utility model discloses a device for recycling hydrogen fluoride in tail gas of a uranium dioxide hydrofluorination process, and belongs to the technical field of uranium conversion production. The utility model aims to improve the utilization rate of hydrogen fluoride in tail gas of a hydrofluorination process and reduce the generation rate of fluorine-containing wastes in the preparation process of uranium tetrafluoride. The device comprises a feeding hopper, a feeding spiral conveyor, a moving bed and a discharging spiral conveyor, the feeding spiral conveyor feeds materials in the feeding hopper into the moving bed, and the discharging spiral conveyor discharges the materials in the moving bed. Uranium dioxide materials are fed into the moving bed through the feeding spiral conveyor, hydrogen fluoride in uranium dioxide hydrofluorination process tail gas is introduced into the moving bed in a countercurrent mode, the hydrogen fluoride makes full contact with uranium dioxide, and therefore the absorpti