低温下活性炭吸附分离Kr和Xe

研究了低温下活性炭吸附分离Kr和Xe的方法。Kr和Xe混合气在-78 ℃活性炭吸附柱上进行富集，根据Kr、Xe在活性炭柱上脱附条件的差异实现了Kr和Xe的分离。结果表明，Kr和Xe的回收率均大于90%，Kr样品中Xe的去污系数达10⁴以上，Xe样品中Kr的去污系数达10³以上。

Separation of Kr and Xe by Active Carbon Absorption Method at Low Temperature

The absorption and separation method of Xe and Kr gas by active carbon was investigated. A standard mixture of Xe and Kr flowed through the active carbon column to be absorbed and enriched at low temperature (-78 ℃). The absorbed Xe and Kr were then deabsorbed from the carbon column separately. The analysis of the experimental data shows that the recoveries of Xe and Kr are greater than 90%. It can be concluded that the decontamination coefficient for Xe from Kr environment is above 10⁴, while the decontamination coefficient for Kr from Xe is no less than 10³.