A catalytic device for preparing u(iv) solution
A catalytic device and solution technology, which is applied in the field of catalytic reaction equipment for preparing U solution, can solve problems such as hidden safety hazards and complex structures, and achieve the effects of improved safety, less wear and tear, and mild reaction conditions
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Embodiment 1
[0024] The annular zone between the inner tube 2 and the outer tube 1 is the reaction zone, filled with Pt / SiO 2 For the catalyst, the loading amount of Pt is 1%; the filling height of the catalyst is 600 mm. Pt / SiO 2 The catalyst is prepared by impregnation method.
[0025] The process of adopting the present invention to prepare U(IV) is as follows: first inject the prepared raw material liquid from the bottom feed port 6 of the catalytic reaction device by the feed pump 10, and the composition of the raw material liquid is: 203g / L UO 2 (NO 3 ) 2 -0.80mol / LHNO 3 -1.0mol / LN 2 h 5 NO 3 After the holes of the sintered stainless steel plate 3 make the feed liquid evenly distributed, enter the annular reaction zone, react with the catalyst, control the reaction temperature by circulating water bath, obtain U(IV) solution and gas product, and the product is discharged from the outlet of the reaction column 6 flows out, realizes the separation of U(IV) solution and gas thro...
Embodiment 2
[0028] The implementation mode of this embodiment is the same as that of Example 1, the difference is that the diameter of the inner tube 3 of the reaction column in this embodiment is 6mm, the diameter of the outer tube 2 is 30mm, the filling height of the catalyst is 300mm, and the Pt / SiO2 filled therebetween 2 The loading of Pt in the catalyst is 3%, and the raw material liquid composition is 201g / L UO 2 (NO 3 ) 2 -0.83mol / LHNO 3 -1.3mol / L N 2 h 5 NO 3 , the temperature of the water bath is 50°C, the concentration of U(IV) at the outlet is 198g / L, and the productive rate of U(IV) can reach 98.5%.
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