Method for removing radioactive iodine from gas cooled reactor
A technology of radioactive iodine and gas-cooled reactors, applied in the direction of radioactive purification, separation methods, chemical instruments and methods, etc., can solve the problems of low temperature of adsorbents and unsuitability for high-temperature gas-cooled reactors, and achieve stable performance and decontamination Good effect, good pressure stability effect
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Embodiment 1
[0036] (1) Preparation of 15%Ag / 13X adsorbent
[0037] Weigh 9.45g AgNO 3 , dissolved in 200mL deionized water, and stirred evenly. Weigh 40g of 13X molecular sieve (20 / 60 mesh powder particles), drop into the above AgNO 3 In the solution, stirred and impregnated at room temperature for 12 hours, then evaporated to remove water, and dried at 110°C for 12 hours. The dried sample was placed in a muffle furnace, raised from room temperature to 450 °C at a rate of 2 °C / min, and then naturally cooled at 450 °C for 2 hours to obtain a 15% Ag / 13X adsorbent (15% Ag / 13X mass percentage), marked as 15%Ag / 13X (450C / 2h).
[0038] The crystal phase structure of the carrier 13X molecular sieve and the adsorbent 15%Ag / 13X (450C / 2h) is analyzed by XRD (X-ray diffraction), and the spectrogram is as follows figure 1 As shown, the results show that the sample 15%Ag / 13X (450C / 2h) maintains the crystal phase structure of 13X molecular sieve.
[0039] (2) Test of 15%Ag / 13X adsorption performanc...
Embodiment 2
[0042] Except that the bed temperature of the adsorption column is 550° C., the others are the same as in Example 1. The measured and calculated decontamination coefficient DF is shown in Table 1.
Embodiment 3
[0044] Except that the bed temperature of the adsorption column is 650° C., the others are the same as in Example 1. The measured and calculated decontamination coefficient DF is shown in Table 1.
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