▎ 摘　　要

NOVELTY - The utility model claims an off-line powder fluorination system, comprising: a gas mixing tank, a rotating drum, a motor, an oil circulating system, a tail gas processing tower, a vacuum pump, wherein the drum is a drum with a jacket, the drum is provided with a pressure gauge, a thermometer and a fluorine concentration detection meter, the upper end is provided with a feeding port connected and sealed by a flange, the lower end is connected with a discharge port sealed by a ball valve, the left end is connected with an air pipe, the oil circulation system is connected with the jacket of the drum through the pipeline, the motor drives the drum to rotate; the gas mixing tank is provided with a pressure gauge, the upper end is provided with an air inlet, the lower end is connected with the air pipe through a valve and a pipeline; the tail gas processing tower is provided with an adsorption filler, the front end is connected with the air pipe through the valve and the pipeline, the back end is connected with the vacuum pump through the pipeline. Adopting the utility model, the rotation of the drum makes the powder raw material fully react with fluorine gas contact the powder raw material is uniformly fluorinated, the fluorine gas utilization rate is high, and the practicability is strong.