The invention belongs to the technical field of
fluorine gas production, and particularly relates to a
tail gas treatment device for
fluorine gas production, the
tail gas treatment device comprises a
base station and a working box installed on the
base station, a liquid changing
assembly and a moving plate are slidably installed in the working box, and the working box is divided into a liquid changing cavity, a treatment cavity and a liquid discharging cavity by the liquid changing
assembly and the moving plate; the working box is connected with the gas collecting
pipe and the liquid inlet
pipe, and the liquid changing
assembly comprises a lifting ring and a rotating ring rotationally installed in the lifting ring. High-concentration alkali liquor is injected into a groove of a lifting ring through a liquid inlet
pipe, so that the lifting ring compresses a long spring, a treatment cavity is communicated with a liquid changing cavity, then the lifting ring presses
difluoromethane gas in the treatment cavity, and
difluoromethane is conveyed to the liquid changing cavity through a gap between an upper top plate and a lower push plate; the difluoro-
oxide in the liquid changing cavity reacts with high-concentration
calcium hydroxide, so that the difluoro-
oxide is treated, and the difluoro-
oxide is prevented from leaking when the difluoro-oxide and alkali liquor in the treatment cavity are discharged out of the working box together.