Abstract: De-tritiation experiments of air with tritium gas in a glove box at closed-loop circulation mode were carried out by a compact tritium removal equipment(TRE) developed by China Institute for Radiation Protection. The TRE will decrease the concentration of tritium in air of glove box with 1 m³ from 4.62×10⁶ Bq/L to lower than 4.62×10³ Bq/L within 114 min at air flow rate of 3.8 m³/h and working temperature of 450 ℃ of catalytic bed. The applicability and safety of the TRE for use as tritium facilities is demonstrated also and some technical problems are discussed in this work.