【摘要】 本工作对使用无银１３Ｘ分子筛去除乏燃料后处理厂溶解废气中的碘的可行性进行了初步的实验研究；重点研究了在气流干燥条件厂，ＮＯ＿２的浓度以及吸附温度对Ｉ＿２和ＣＨ＿３Ｉ在１３Ｘ分子筛上的吸附效率与吸附稳定性的影响。试验结果表明，ＮＯ＿２的存在对Ｉ＿２和ＣＨ＿３Ｉ在无银１３Ｘ分子筛上的吸附效率与吸附稳定性都有不利影响；吸附温度变化对１３Ｘ分子筛吸附ＣＨ＿３Ｉ影响不明显，温度升高对１３Ｘ分子筛吸附Ｉ＿２有明显不利影响。溶解废气中ＮＯ＿２的浓度通常在１％左右，在这样的浓度下，无银１３Ｘ分子筛对Ｉ＿２和ＣＨ＿３Ｉ仍具有很高的去除效率。更多还原

【Abstract】 A preliminary research on the possibility of Silver-free zeolite 13X to remove radioactive iodine from dissolver off-gas in reproceesing plant was made. The influence of theamount of nO₂ in airstream and the temperature on the adsorption of elementary iodine andmethyl iodine on zeolite 13X was emphatically studied.The experiment results indicated thatthe existence of NO₂ in airstream had adverse influence on the adsorption efficiency and stability of elementary iodine and methyl iodine on zeolite 13X. The temperature had no significant influence on the adsorption of emthyl iodide but exerted significant,adverse influence onthat of elementary iodine. The amount of NO₂ in dissolver off-gas is usually about 1%, Underthis condition,the efficiency of silver-free zeolite 13X for removing elementary iodine andmethyl iodide was still very high.更多还原