Recycling device for hydrogen fluoride in tail gas of uranium dioxide hydrofluorination process
A uranium dioxide and chemical process technology, which is applied in the field of uranium conversion production, can solve problems such as difficulty in handling and dispose of secondary wastes of lime slag, and achieve the effects of being beneficial to environmental protection, improving economy, and reducing the amount of production
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specific Embodiment approach 1
[0049] refer to figure 1 As shown, this embodiment provides a hydrogen fluoride reuse device in the tail gas of the uranium dioxide hydrofluorination process, including a feed hopper 1, a feed screw conveyor 2, a moving bed 3 and a discharge screw conveyor 4. The feeding screw conveyor 2 sends the material in the feeding hopper 1 into the moving bed 3 , and the discharging screw conveyor 4 discharges the material in the moving bed 3 .
[0050] In this example, according to the actual operation of the uranium dioxide hydrofluorination process in the field of uranium conversion production, the recovery of hydrogen fluoride in the tail gas of the uranium dioxide hydrofluorination process was carried out, and a test system for the recovery of hydrogen fluoride in the tail gas of the uranium dioxide hydrofluorination process was established. Applied in production practice, so as to realize the recovery and reuse rate of hydrogen fluoride in the tail gas of the hydrofluorination pro...
specific Embodiment approach 2
[0053] refer to figure 1 , figure 2 and Figure 4 As shown, this embodiment provides a hydrogen fluoride reuse device in the tail gas of the uranium dioxide hydrofluorination process, including a feed hopper 1, a feed screw conveyor 2, a moving bed 3 and a discharge screw conveyor 4. The feeding screw conveyor 2 sends the material in the feeding hopper 1 into the moving bed 3 , and the discharging screw conveyor 4 discharges the material in the moving bed 3 . Wherein the moving bed 3 is arranged in a vertical direction, and the top of the moving bed 3 is connected with a feeding screw conveyor 2, and the feeding screw conveyor 2 sends the material in the feeding hopper 1 into the moving bed 3, and the moving bed 3 The bottom of the bed is connected with a discharge screw conveyor 4, and the discharge screw conveyor 4 discharges the fully contacted uranium dioxide and hydrogen fluoride materials in the moving bed 3.
specific Embodiment approach 3
[0055] refer to figure 2 , image 3 As shown, a φ265mm inner hole and a 50mm high feed inlet are set in the center of the top of the feed hopper 1, and a DN40 exhaust gas outlet (with matching flange and bellows joint) is set on the side; a discharge port is set at the bottom of the feed hopper 1. mouth, the diameter of the discharge port of the feed hopper 1 is docked with the screw conveyor silo of the feed screw conveyor 2;
[0056] Feed screw conveyor 2 includes feed motor 23 (frequency conversion, local and remote control), coupling 24, bearing box 25, silo stirring shaft 26, stuffing box 27, screw conveying shaft 28, casing 29 And connect the spring box 30, the feed motor 23, the bearing box 25 and the stuffing box 27 are installed on the first base 32 in turn, and the screw conveying shaft 28 is installed in the bearing box 25, and the screw conveying shaft 28 is connected with the feeder through the coupling 24. The material motor 23 establishes the installation rel...
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